JPS581868A - Floppy disk driving device - Google Patents

Abstract

PURPOSE:To maintain the set mode of a dummy media although the media is set apart from a power supply in case of transporting etc., by providing a manual press changeover mechanism which presses a cone load part beyond dead point, to the cone load which is driven with pressure by a cone load driving source. CONSTITUTION:A rigid plate 38 is energized by the plate springs 39 and 40 in the direction where a cone 30 is detached from a driving hub 14. Then the plate 38 is displaced to the side of the hub 14 when a cone load driving source is driven. A shutter 50 is turned in the closing direction in case no electric power is supplied to a cone load driving source in a transport mode. Then a roller 44 on a shaft 43 is pressed to the plate 38 over the upper dead point. As a result, the resetting force given by the spring 39 and 40 is controlled, and the cone 30 has a displacement toward the hub 14 to press continuously the dummy media 4a. At the same time a head is also protected at an intermediate position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a 70-tuppy disk drive device.

Generally, in this type of 70-tube disk drive device, a jacketed magnetic disk inserted into the device is held under a predetermined pressure O by a drive hub and a cone around the center hole of the drive/pull. While the magnetic disk is rotated by a motor connected to the magnetic disk, data is recorded and reproduced by bringing the head into contact with a predetermined exposed portion of the magnetic disk. However, looking at the method for setting the magnetic disk into the device, conventionally, the swingable door is closed when the magnetic disk is inserted through the insertion slot and passed between the drive hub and the cone in the separated state. Since the cone is moved toward the drive hub and set by gripping it by operation, it is necessary to open and close the swingable door. In this regard, from the viewpoint of space, a knob was exposed instead of a swingable door, and when the knob was operated, the cone was moved toward the drive hub by the force applying mechanism, temporary spring, etc. Kameno is disclosed in Japanese Patent Application Laid-open Nos. 55-52657 and 55-5!8511, etc., but the ζ method is still a manual setting method, and the disc setting operation is It's inconvenient.

Therefore, we provided a sensor and a cone road drive source.
An automatic system that automatically grips and sets the magnetic disk by simply inserting it into the device.
A set method has already been proposed by the applicant. However, when transporting a floppy disk drive, dummy media is inserted and set to protect the head, etc., but with such an auto-set type, the power supply is turned off during transport. If it is not inserted, the cone load drive source will not operate and the dummy media will not be set, which may result in incomplete protection of the head etc. during transportation.

The present invention has been developed with these points in mind, and while taking advantage of the auto-setting method for magnetic disks, it can also be used in the same way as when auto-setting, even when the magnetic disk is away from a power source, such as during transportation. It is possible to secure and maintain the set state of the dummy media, and protect the head etc.7
The object of the present invention is to obtain a zero-bit disk drive device.

In this ttsh, a manual suppression switching mechanism is provided to push the cone load section, which is pushed and driven by the cone load drive source during auto-setting, past its top dead center, so it is easy to use during transportation, etc. By operating this suppression switching mechanism when the device is away from the power source, it is possible to grip and set the dummy media and maintain that state, thereby minimizing the vibration of the head, etc. It is designed so that it can be suppressed and protected.

An embodiment of the present invention will be explained based on the drawings.

First, Figure 1 shows the appearance of the outer case (1) of the floppy disk drive device.
) A cover (3) having a slit-shaped insertion opening (2) is attached to the front side of the cover (3). Moreover, FIG. 2 shows a floppy disk (4) used in this floppy disk drive device.

Square jacket (5) and this jacket (5)
It consists of a round thin 7 flexible magnetic disk (6) rotatably disposed inside. Here, the jacket (5) is thicker than the material of the magnetic disk (s), and
It is made of a more rigid material and is in a closed state.
A hole (7) is formed in the center thereof, and a long hole (8) exposes the magnetic disk (6) in the radial direction.
is formed, and furthermore, a predetermined position tK-hole (
9) is formed. On the other hand, a central hole 4 is formed in the magnetic disk (6), which is smaller than the hole (7) and is concentric with this hole (7), and furthermore, in the rotation locus, there is a portion of the small hole ψ! A detection hole α theory is formed through which it can pass. Further, a label (2) is attached to the - side of the jacket (5).

However, in the outside case (1), there is no insertion slot (2).
) A main 7 frame (not shown) and an auxiliary 7 frame (2) are arranged to face each other. Here, a drive hub α◆ is rotatably supported at a predetermined position on the main frame.
A DC controller is directly connected to the drive hub α◆O axis) which is coaxially provided on the back side of the main seven frames. This drive hub α has a central recess (goods) and its j
It has 190 sides m (goods) and t.

In this drive hub, one support rod (B) is disposed vertically in the main frame in the horizontal direction, and a drive source (not shown) moves along this support rod. As you move back and forth, a spear is provided. The head that records and reproduces data on the magnetic disk exposed through this long hole (8)
is installed. This head (2) is attached to a swing arm which is biased toward the P magnetic disk (6) by a leaf spring (4). Here, Takujo records and reproduces data on both sides of the magnetic disk (6), so the middle disk (6)
In 2), a pair of heads etc. are provided facing each other, but it is sufficient if at least one is a head. Also, on the main 7V-ohm side, there is a luer on the back side of the auxiliary frame opposite to each other. A guide portion forming a narrow insertion path for the Otsubee disk (4) is formed at approximately the same height as the drive bald a◆. In addition, a plate or the like is attached to the main 7vm M side plate.

On the other hand, the auxiliary 7 frames (2) are connected to the pins (2) vertically arranged in alignment with the drive bar 04 of the main 7 frames.
Positioning speaking Kuku mounting piece monument, to-'chD that can be attached and detached from the main frame by Tatsunotsu,
To this auxiliary 7 frame aluminum, a moving hub shaft, a head mechanism, and a 1 m long door material, such as a plate, are soldered.

First, the hole corresponding to the auxiliary frame QIKa drive hub and the notch 1 @ which escapes the head mechanism are formed.
D, ζO hole - Shaso V in the O position, located on the same axis as the driving hub axis and facing the omnih hub - 1 ■Putsiresmo / - Eye with the die / 11 turning point - Cone that composes the society ■
is provided. ζO is connected to the drive hub (B) O with a convex convex sel in the center of the drive hub (B) that can accommodate a person inside the center concave S and one Tsunge S- facing the In5-. Jin's Koshi 〇 axis @ Tsuyoshi y・■-Y number plate axis) Supported by the saw plate that can freely move in the axial direction 9), :l-76
1@:I-n・■-de-great-coil spring for the bell-
is provided. At ζζ, the cone of c is provided at the top and bottom of the line auxiliary frame QI, and is supported freely in the direction of the axis of the nine posts and slots (b) and jPm (h), Near the poon-so attachment part is an auxiliary 7V-rigid plate parallel to the poon-so, and four leaf springs are attached to both ends of the rigid plate. Therefore, the stiffness play) 011Fi leaf spring cII-
The cone/l-do is biased in the direction to move the cone away from the drive hub (b), and serves as a source of motive force for displacing the rigid plate (b) toward the drive hub (b). The solenoid 11* and the transmission mechanism are manufactured by the general public. That is, one end of the shaft ring Km, which is supported by the boss and bent and extended on the rigid plate axis, is provided with a four-way shaft located on the rigid plate. ζOK! -2 has a flange and is said to be longer than the MO width (rigid play). And the axis -
is provided with a cam that co-moves with this shaft, and is connected to the cone road lunoid wheel by a wire via a pulley. At this point, a step lI@ is formed on which the roller is locked in the rigid plate MK butterfly normal shape sl. Further, a shutter wheel is fixed to the other end of the shaft for closing the insertion opening (2) by its rotation.

Furthermore, the cone lead lunoid-05m is provided with a shield plate for the head mechanism.

Next, the Photo Cub Two is used as a first sensor to detect whether the tip side of the jacket (6) of the 7A tube disk (4) inserted into the back of the auxiliary frame (2) has exceeded the irises 1 position Ptt. is provided. When the front end of the jacket (5) is located at the first position, the center of the magnetic disk (6) is located near the center of the drive hub O. That is, as will be described later, the first position Psd is to bring the cone (■) into contact with the magnetic disk (6) once (regular magnetic disk (6) insertion position) j11I near the snow position Pl and slightly in front (on the insertion port 0 side). In addition to being at this first position, (2) the brushless motor is started to be driven at this first position P1.

On the other hand, an eject mechanism is provided at the bottom of the auxiliary 7 frame. The NjieF F mechanism of Otsu is fixed with screws via the eject plate shaft, leaf spring and the guide member shaft of the T1IV auxiliary frame (approximately the same thickness as the LIIID plate), and the auxiliary frame (toward) is Eject mechanism @tl
A notch for the O guide part # is formed to provide a movement field in the ll* direction, and a return spring is stretched between the shafts of the shield I [■ and the eject plate. In ζζ, a bent piece to which the tip of the jacket (5) is locked is formed at the tip of the eject grating shaft, and a square hole located on the front side of the hole*sm and ζ0Rs is formed on the rear end side. There is.

Moreover, the leaf spring slides while being pressed against the back surface of the auxiliary 7 frame (2), and the free end Ka of the leaf spring is formed on the auxiliary 7 frame 2 and has a locking step part 0 that engages and disengages from the nonagonal hole ring. Formed-
Ru. The locking step ■ and the front edge of the square hole control the ejection position 1'tt*, and the square hole soi side edge restricts the movement of the eject mechanism @O toward the center. be. In order to detect the movement 11t of such an eject mechanism, a microphone stomach switch shaft as an O-iris 8 sensor is provided at the lower back 11 of the auxiliary frame (2). The eject grating shaft has four switch shafts, and an actuating piece that turns it off at 70N is formed on the eject grate shaft. A tapered portion is formed on the ζO actuating piece e), and the eject plate No. 8
The actuating piece moves the microphone switch shaft to the OR switch, and returns to the rattan position PI.
It is turned off. Accordingly, the eject mechanism is in a flat state at the third position PfiK. Therefore, while canceling the tka ivy state like this, the normal position PI
A suppressing piece for regulating the rigid grating is bent and formed integrally with the rigid grate. The Sunawa Matsuko O pressing piece is facing the square hole ■, and the eject grate is in the second position? , when it is located, it faces the square hole e1m% locking step with a slight dimensional difference d from the front surface of *SW 7.

Further, a head/direction mechanism is provided at the upper part of the auxiliary frame (2). At the top of the front side, there is a head, four-door, and a lug.
A lever n urged in the FF direction is connected. At the rear upper part, there is provided a placket (2) which is swingable about the shaft (4) and is formed into a substantially U-shape when viewed from the (11) direction. It is attached in a direction away from the auxiliary frame (to) by a spring q◆ on the other hand, and is deflected through the deceleration mechanism. ^ Physically lines, auxiliary frames (
2) is provided with a booby V fixed to the bracket 4 and a pulley fixed to the bracket 4, and a wire 4 passing through these O pulleys is provided with a lever (c) and a locking piece Kll.

This placket nK has pay #4 attached to it facing the head mechanism, and the lower edge side of this payle has 7 twists that engage the hook (2) provided on the swinging arm in the direction of separation. is formed.

In addition, the Petit y in the inner Ka main tree of Beyrou
A pressure plate facing IISIEI is provided so as to be able to move toward and away from the plate spring IIK while being regulated by the lug portion. Furthermore, the placket 9i
When the cone K moves toward the drive hub a◆, a locking piece is extended so that the position of the cone is regulated to the intermediate position P by the two.

Furthermore, the small hole (9) in the auxiliary 7 frame (2) when the 4P disk (4) is inserted in the normal direction.
An index sensor is provided in a pair on the main frame side, which is located opposite to the main frame and generates an index signal based on the detection of the detection hole α. Further, the cover (3) is provided with an eject button that is pressed to eject the floppy disk (4).

Next, the electrical circuit configuration will be explained with reference to the block diagram of FIG. 14. First, the photocoupler detection signal B
1 is input to the dowiper vIGK which drives the plastic Vl/smotor Q time. In addition, the microswitch detection signal 8 is input to the C terminal of the clip 70 tube 9η, and the output q of this flip tube A (2) is input to the head load control circuit, and is also input to the AND gate instantaneously. It has been entered.

Based on the detection signal 81, this AND gate is set to [■9 Oj to ensure the rise time of the bookless motor (2) about OJ seconds! A signal 11Dl from the extension circuit is also input, and NΦ
The output of the gate is inputted to the driver 4 for the cone solenoid II via the No gate Wt.

This AND gate has a ready set signal of 8
Also input is an OR gate-O output signal which receives as input the signal inverted by the inverter and the chip block signal 8C. Also, based on the Φ gate IIO output signal, 111
3 seconds @jl! An erroneous insertion detection timer is provided which secures the 0 time and generates the signal 1inet, and this signal B shoulder is inputted to the KNAND gate together with the Iyper@O signal.
Ru. The output signal R8 from this NAND gate is input to the KNAND gate (101) together with the 8-fold detection signal. Furthermore, there is a microswitch (OR) provided inside the eject button (which receives the eject signal 811 from 10 and the external eject signal 8 from the system in which the floppy disk drive is installed) (
108) A NA) iD game) (104) to which the 10 signal and the eject prohibition signal are input is provided, and this NAN
The output signal interval from the D gate (104) is input to the NAND gate (101).

In such a configuration, in the i state when the 7-piece disk (4) is not inserted into the device, the cone@load solenoid IIK is not energized and the shaft is not rotating. The shutter wheel opens the insertion opening (2) so that a four-piece disc (4) can be inserted through the insertion opening (2). In addition, since the cone 4 is attached and the pressing force of 4a-2 does not act on the 9-cone ad plate 04, the drive hub (L4 may be (to the cone) are maintained in a separated state, and the drive hub o.
A gap is formed through which electricity can be applied to the cone bolt [70]. At this time, before inserting the floppy disk (4), operate the cone load solenoid to expose the cone 0It-drive hub. Since the suppressing piece is in opposing contact with the stage S- of the eject plate) as shown in FIG.
Two V @ 0 movement movement is not affected, drive hub a◆・
Gap lines between cone members are maintained. In addition, the bracket is biased by the spring 94 in the direction away from the auxiliary frame, and at this time the roller is also in the separated position [the locking piece of the bracket with K is in the position shown in Figure 11 (-). Therefore, the pail 4, which is blown onto the bracket (2), is held at the maximum separation position by the spring Q◆. As a result, the swinging arm with the head ■ is biased in the contact direction by the wire plate spring, but is held at the maximum separation position by the seven hooks of the pail ■ that are engaged with the hook. It is possible to insert a 70-day meter (4) tube at the moment of the head (9 is between the head and the opposing member). At this time, the pressure II- also separates from the platen S@ according to Payrou and is maintained in a good state, and a gap is formed between the two.

Under these conditions, insert the shifter disk (4) into the M position through the insertion slot (2). Here, the floppy disk (4) has a square jacket (6) and an insertion direction (front and back), but only the direction shown by the arrow in Figure 2 is the normal insertion direction. In the case of 01 insertion directions, all insertions are incorrect. Regardless of the insertion direction, when the inserted floppy disk (4) 0 tip reaches the first position P1, it is detected by the photocoupler vsK and a detection signal is generated. Since S1 is output, this detection signal 81 activates the driver □ bar and starts the ■Puts Vless motor oQ. As a result, the drive hub a◆ rotates and is positioned near the center of the 70-tube disk (4) O - this drive hub is exposed◆, but since it is not yet gripped by the cone ■, the magnetic disk (6 ) rotates.

In parallel with this detection operation by 7 Otokaptu (2),
The eject plate is pushed by the floppy disk (4) that is in contact with its bending ring and moves to the back.The leaf spring that follows the eject plate axis enters the front edge of the square hole w&2 When the floppy disk (4) is inserted to the position, the operating piece of the eject plate turns the microphone switch shaft tON, and the locking step of the plate moves to the 101st position while the switch remains ON. !
! As shown by the dashed line in ll (a), push the floppy disk (
When the operator releases the hand tube at ζ when the insertion of 4) is possible, the Nijiev F mechanism is pulled by the spring ■ and returns to the second position shown in solid line in Figure 10 (4). Third
By returning to the position, the microphone switch shaft is turned OFF after the 70 tubi dastar (4J exceeds the second position at), detects that the hand has been released, and is turned OFF by the O detection signal 81 when the switch is turned OFF. The output Q from the flip-flop 9 turns the head p-do invalid signal into a valid signal in the head load control circuit so.On the other hand, the output Qa of this flip-flop 91)
Waiting for the delayed output signal BDI from the delayed output signal BDI due to the start-up of the DC brushless motor - game) II! When the driver is opened, and the ready set signal ALL is not yet outputted, the driver is driven through the gate, and the suction operation is performed.

The wire is pulled by this cone load solenoid ring O suction operation, and the wire is passed through the pulley and cam to the shaft.
Rotating and displacing the roller @ part of one end that is deflected, as shown in Fig. 6, crosses over the RIIA@ of the two-sided pu V- ) shows a suppressing effect in the contact direction. As a result, the rigid plate (to) deforms the leaf spring 0IIIjI and forms a trench parallel to the auxiliary array 4! This will move the cone, which is supported by the rigid plate 19, directly towards the drive hub. Therefore, the inserted 970 tsupi disk (
4) The magnetic disk (6) is gripped by the protruding part around the central hole QG on the surface of the rigid hub O) and the cone 〇7 flange part, and the pressing force due to the coil spring is applied to the magnetic disk (6). Under,
The driving force is rotated (therefore, it rotates within the jacket (5). The row 9M portion, which shows the suppression action against the 110 rigid plate ■, is rotated so that it does not exceed the top dead center as shown in Figure 6. On the other hand, looking at the engine mechanism, as shown in Figure 1O (4), the KI
N! When the leaf spring is returned to its position, the lock Rs of the leaf spring is locked to the square hole ring and the cone load solenoid 1 is in the I/%B2 state where no ejection action is possible.
The lock release operation is performed in parallel with the magnetic disk (6) O gripping and setting operation based on the operation 1111. That is, as the rigid plate (towards) moves in the contact direction, the suppressing piece moves one step, passes through the square hole, and passes through the square hole to the plate spring ■0 locking stage SWt from the square hole as shown in Fig. 10 (→). At the time of pressing against this locking RII■, there is a dimensional difference j% in the relationship between the pressing piece and the front surface of the step part ■ as shown in Fig. 10 (→), and the locking When the stage S is released from the square hole ■, at the 9th point, the eject mechanism moves from the 7th spring tlIIK by this dimensional difference d as shown in Fig. ■ will move them to the normal position PI together.The movement to this normal position is done by the cone oIO drive hub (while moving towards ◆, but on the surface) and the final movement by Tsutsunjibe Sukehito. There is no problem because this is done before the floppy disk is grasped.In this way, just by inserting the floppy disk (4) into the stand and releasing it, the cone load solenoid is automatically operated and driven. It is possible to grip and set the IM disc (6) using the hub ayuto: y-ytIQ.

After the setting conditions for the magnetic disk (6) are satisfied and the magnetic disk (6) is held, it is detected whether or not the magnetic disk (4) has been inserted abnormally. In other words, a floppy disk (4
) is inserted in the normal direction, the small hole ψ) will face the index 7 pin in its set state], and the rotation of the magnetic disk (6) will open the small hole (9).
The detection hole a1 passing through is detected, and four index signals are counted as shown in the rattan 11S diagram to indicate the ready state.
It enters the set state, generates a ready set signal, and continues in the set state as a normal direction insertion. On the other hand, if the floppy disk (4) is inserted and set in an abnormal direction, its small hole (9) does not face the index sensor, and the index signal is not output, which causes the ready set signal to be output. Since it is not detected, the delayed output signal 8DIt of the erroneous insertion detection timer is waited, and it is determined that the insertion is erroneous.
An output signal section 1 as shown by the dotted line in FIG. 15 is output from the NAPΦ gate (2). This allows NAND
(101), the 7-reset log e1 is reset and the ejector gate is prohibited, so the cone load solenoid In is deenergized, the cone load returns as described later, and the eject mechanism is activated. The disc (4) is ejected. Therefore, conventionally, when a disk is inserted incorrectly, the incorrect insertion is detected only after the system accesses the floppy disk, and the 0-hour lag until this detection is confusing to the operator. Furthermore, although the system is capable of displaying an error message upon detecting incorrect insertion, it is not possible to automatically eject the disk;
When the user sees the nine floppy discs (4) ejected to the side, he can immediately know that the troublesome 1i and li have been inserted incorrectly, and can re-insert them correctly. i
It is also possible to issue a special frequency alarm based on the incorrect insertion detection signal or notify by flashing the LID. On the other hand, depending on the insertion state of the 7-tip disc (4), even if the tip of the disc (4) is inserted beyond the 8th position Pst and the hand is released, it is detected by the microphone four switch shaft and the flip-flop ring is set. When the 7-Tubi disk (4) is overloaded more than necessary and becomes below the 1st position P1, the detection signal 81 of the photo cube two that monitors the 7-Tubi disk (4) disappears. So, through NAND game) (1 dull) Tsu9 Tsubu 70p So will be reset Jin and Nashi, Two: / m gl
The solenoid is not driven from the beginning, and the magnetic disk (6) is not set. Therefore, in this case, the position of the 1Ka drive hub O Disc (6)
It won't hurt.

After the floppy disk (4) is inserted and set normally and the ready set signal 811 is output,
The gripping state of the magnetic disk (6) O is maintained by the suction l1lK of the cone load exposure solenoid, but at this time, the cone load solenoid 1 is controlled by the lever. In other words, when the magnetic disk (6) is set and started, a large electric current is sent to this cone/a-de solenoid.
However, when the ready set signal 81a is output, the Φ gate of the IVC is opened and closed by the clock signal 8clIC for the nutsper. This will allow a large amount of current to flow through the cone, connection, and solenoid to control the flow and prevent heat generation. However, switching to this lever control does not depend on the ready set signal gas K, but simply by controlling the cone/U-daw solenoid OO drive gI! It may also be done after a certain period of time has elapsed using a timer.

In this way, when the third air disc (6) is set and held, as the shaft rotates to set,
The holder also rotates about 90g to close the insertion port (2). In other words, since the magnetic disk (6) is set and held by the drive hub o4 and the cone ■, originally the insertion slot (2) can be left open at all times due to this shutter employee's request, but the magnetic disk There is a risk that the jacket (5) or the magnetic disk (6) may be damaged due to the position of the jacket (5) being displaced during rotation of (6).
The #i bending piece on the back side prevents the shutter from shifting in position on the front side.

Furthermore, since the second shutter member crosses the insertion slot (2), double insertion of the floppy disk (4) is also prevented.

By the way, the position of the shutter in Part B was near the top and bottom center of the insertion slot (2).
Since there is a risk of injury to your hands from this shutter (■) when it is inserted, it is best to place it slightly above or below the center.

On the other hand, when holding a set of magnetic disks <6), the head machine *
1lt - Looking at the bracket (C), the retaining piece shaft of the bracket (C), which was in a free state with respect to the roller before insertion, is pushed by the set roller and falls, as shown in Figure 11 (Figure 11). C), the pale is displaced to an intermediate position.

In other words, Pale So is the magnetic disk (6) from its original position.
Although it has a shape close to 1IIK, it is pushed by a spring 94 within the range restricted by the low two locking piece ■, and the swing arm 54 and head @ are held in the intermediate position via the hook. , the head 4 never comes into contact with the magnetic disk (6). At this time, the pressure plate shaft is in close contact with the 70mm disc (4) on the platen.

Under such conditions, turn on and off the head load solenoid while moving the carriage 91 as appropriate.
By moving the head toward and away from the magnetic disk (6), data is recorded and reproduced. In other words, when the head solenoid No. 4 is energized, the lever (2)
As a result of the Y Jr. decoy being pulled through the pulley, the bracket (2) on which the pulley is attached is pushed down. ) and press down against the nine leaf springs. With this, n, *m arm (
2) Since the restriction by the 7th gear ■Hirofutsu/ji■ is lifted, the swinging arm (2) is displaced under the action of the leaf spring 940, and the oscillating arm (2) is displaced through the 7th head four-pipe long hole (8). This will bring the magnetic disk (6)K into contact. Head like ζO @O
＠Ki Dista (In the contact movement against ＠, the head e
Since the seed solenoid 1101111 is decelerated and transmitted by the wire and pulley 4, the head 4 does not come into sudden contact with the magnetic disk (6), thereby preventing damage. Moreover, since the head 4 comes into contact not from its original position but from an intermediate position defined by the locking piece I5, the magnetic disk (6) cannot be maintained from this point. At the same time, the head load solenoid can also be used with a small amount of dust. Since the head/fourth solenoid is connected to the bracket by a wire, it can be placed far away from the head (as shown in the figure).
．． Magnetically advantageous.

Then, when the head is separated from the disk (6), the head load solenoid 5et is turned OFF, and the bracket 0 and the pale ■ are turned off by the springs q◆, I.
The head (2) is pushed up by the Etj IIK (to the swinging arm via the hook I19), and the head (2) is separated.

This returns it to the intermediate position. Therefore, when recording and reproducing data, the head ducts! III! ! Movement takes place between the intermediate position and the contact position.

After recording and reproducing the data, the 7-proverb data star (4) is ejected by pressing the eject button -. In other words, when the eject button (104) is pressed, the micro switch (102) is turned ON and the eject signal 811 is turned on. Output signal 88 is output from (104) and the knobs 70 and 4 are reset. Piece gate II is prohibited and cone u-de solenoid-
turns off. ζO As a result, there is no suction force against Tsuiya @, and the rigid plate @ is suppressed at the licking position beyond the top dead center, and the vh nine axis-14-2 becomes free state and 1, and this rigid plate Leaf spring t! 4- automatically performs the separation return operation in response to the return force. As a result, the cone also moves away from the grasped state by the drive hub shaft and returns.

9. Even when I got to the head mechanism side, I found that the bracket 2 had separated and the locking piece was not regulated.
Therefore, the head 4 also moves away from the intermediate position to its original position. In addition, the rigid plate ∎O separates and the ⑶ removes the suppressor piece from the square hole wheel shaft, but the ejector mechanism wheel does not work until its tip is removed by the height of step*100. Therefore, at this point, the head 4:z-yOI is returned to its original position, and the state becomes approximately the same as before the floppy disk (4) was inserted. Then, the eject mechanism is pulled by the spring (7) and returns to its original position. At the time of release, the floppy disk (the 4th one is the eject grate IAl!I piece IIK is pressed and ejected into the insertion slot (2), but at the time of ejection it is the head), since the cone has already separated. The magnetic disk (6) will not be damaged. Nizhiev like this)
The same applies to the operation line, which is based on the output signal R81K of the NAND gate at the time of erroneous insertion as described above. It was,
As a result of being able to set the floppy disk (4) using electrical control, etc., as described above, the ejection of the floppy disk (4) can be performed without having to operate the eject button. It can also be ejected by an external eject signal 81 from the system. As a result, the floppy disk (4) can be ejected immediately after data recording/reproduction is completed, which can help save energy in bookless motors, cone-loaded motors, etc.

18mxt when ejecting while recording and playing back to the Yoshiki disk (6) using the head @.
If the eject operation is performed by inputting 8 or 8 characters, it will cause an error in the recording/playback status, so it must be prohibited.Therefore, although not shown in the figure, there is a magnetic disk (6) inside the device. A set of 11t'' inserted, Lady Sera F
There is a built-in mechanism for discriminating and monitoring three states: state and head select state. In the select state, an eject prohibition signal is input to the NAND gate (164), and the eject signals 1ist, 8. N even if Yu is input
Output signal R8mtl from Al'[) gate (104)
This is something that will stop you. Such a situation S! Obele-1
In order to notify flC%, there are green and red LIDs inside the ejector button, and the wire heat lights up in the inserted state, and the green LID lights up in the ready set state to indicate that it can be ejected, and select Under these conditions, the red LID lights up to indicate an eject prohibition notice 1It-IF, but the device that automatically grips and sets the magnetic disk (6) as in this embodiment is different from the conventional one. If the power is not turned on, such as during transportation,
Due to the film retention of the head (2), the cone, four-head, and solenoid will not be activated even if the four is inserted, so this /denkai media will not be closed. ,
Head 4 also remains in its original position.

By rotating the shutter t4vc in the closing direction and pressing the row v4 on the shaft 2 against the rigid grating beyond the top dead center as shown in Fig. 13, the leaf spring 1 The restoring force is regulated by the
The company is kept in a state of oppression. Therefore, even when the device is away from the power source during transportation, it is possible to secure and maintain the same condition as when it was set, and the head (2) is also in an intermediate position9, minimizing vibrations. It is something that can be protected.

The motor for rotating the magnetic disk (6) is not limited to the Prakless Motor 04, but may also be a motor that uses a conventionally commonly used motor C4 and is rotated by a belt, etc. It is something. However, in the case of an AC 4-motor, depending on the area of use, there may be problems with switching between SO/5 oall, so it can be said that the 2 motor is preferable. This■
In the case of the pushless motor (2), the rush current at the time of startup is a problem, but based on the detection signal s1 from the 7 Otokagutsu member, the pushless motor (B) is started prior to the gripping and setting operation of the 70 pushpiece disc (4). As a result, the rush current becomes the object of prevention. In addition, it is possible to solve the problem of increasing the current capacity by driving the DC brushless motor (b) after energizing it with the ready-set signal (cone load solenoid value) and counting a certain period of time with a timer. It is.

9. Regarding the maintainability of the device, most of the components except the brushless motor (2), drive hub α◆, and head mechanism are attached to the auxiliary frame (2). Since it can be freely attached to and detached from the main 7 frame using the frame and clamp (2), it is only necessary to attach and detach the () side to and from the auxiliary frame, resulting in a good product.

In this embodiment, a cone load solenoid is used as the cone load drive source, but a brushless solenoid may be used instead.

According to HiODC brushless motor, cone load
Cone ■
can be set smoothly, and damage to the vicinity of the center hole (2) of the magnetic disk (6) caused by the cone (2) can be reduced. Further, in consideration of the power consumption of the cone load solenoid (b) when holding the set, two solenoids may be provided, one for setting the T-tune and the other for resetting.

As described above, the present invention is provided with a manual suppression switching mechanism that presses the cone load portion driven by the cone load drive source beyond its top dead center during auto-setting. During normal use, the dummy media can be set automatically based on the sensor and cone load drive source, and the dummy media can be gripped and set by simply operating the manual suppression switching mechanism while away from the power source during transportation, etc. However, the head can be maintained by exceeding the top dead center, and therefore the vibration of the head, etc. can be minimized and protected.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention (FIiiiC), in which Fig. 1 is a perspective view of the overall appearance, Fig. 2 is a side view of a 7-four-piece disk, Fig. 3 is a side view, and Fig. 4 is a set state. Side view,
Fig. 5 is an enlarged front view of the grip, Fig. 6 is a front view of the grip when set, Fig. 7 is a partially enlarged perspective view,
No. arIA is a perspective view when it is set, FIG. 9 is an exploded perspective view showing an enlarged view of the eject mechanism, and FIGS. 10 (Hata) to (
j+ is a bottom view showing the operation of the eject mechanism, No. 11
Figures (Hata) to (-1 are enlarged front views showing the Ii! release motion of the head mechanism in different directions, Figure 12 is a horizontal cross-sectional view of a part of it, and Figure 13 is an enlarged view of the gripping part. Front view, 1st
FIG. 4 is a block diagram, and FIG. 16 is a timing chart. 5...jacket, 6...magnetic demeta, 10...
・Central hole, 14... Drive hub, 22... Head,
30... Cone, 84... Cone load plate (cone funnel part), 41... Cone load
Solenoid (cone load drive source), 50...Shutter (suppression switching mechanism), 32...7 Otokagufu (
sensor), 64...i microswitch (sensor) section,, 3 Zuzo LL Diagram Procedure Amendment (Method) December 1, 1932 Director General of the Japan Patent Office Haruki Shimada l Incident Display 7a Tsubi Dayme! Drive location 3 Relationship with the case of the person making the amendment Address of the grantor: 1-3-6-4 Nakamagome, Ota-ku, Tokyo
Rito 107 Chowa S November 24th (shipment date)

Claims (1)

[Claims] A disk rotation mechanism including a drive hub and a cone that can be freely moved toward and away from the magnetic disk that rotates the magnetic disk while gripping a magnetic disk that has a jacket and has a central hole; a head mechanism, and a sensor for detecting insertion of the magnetic disk into a proper position in the device, and is pressed by a cone load drive source driven based on a detection signal of the sensor to drive the cone. In a floppy disk drive device equipped with a cone load section that moves toward a hub and grips and sets the magnetic disk, a manual suppression switching mechanism that presses the cone load section beyond its top dead center is provided. Nine things! A 70-bit disk drive device with mold.