JPS5990260A - Floppy disk driver - Google Patents

Abstract

PURPOSE:To prevent the opening edge of a disk from breaking in case of incomplete disk insertion by providing a shaft which is rotated by an operation lever with a pin which engages a lock lever in case of incomplete disk insertion and stops the rotation of the shaft. CONSTITUTION:The shaft 10 rotated by the operation lever above a disk insertion port 25 is provided with the pin 24, and a spindle 28 is provided with a lock lever 30 which has a cam 30b and an engagement part 30c. When a disk 5 is inserted into the insertion port 25 incompletely, the cam 30b of the lever 30 abuts on the top surface of the disk 5 and the pin 24 engages the engagement part 30c to stop the rotation of the shaft 10. When the disk 5 is inserted completely, the lever 30 is rotated by a spring 29 and said engagement is released to make the shaft 10 free, putting a collect mechanism, etc., in operation. Therefore, the disk opening edge is not clamped improperly in case of incomplete insertion and prevented from breaking.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention J The present invention relates to a thin floppy disk drive.

[Prior art]

In a conventional floppy disk drive, a collet mechanism and a head rotary mechanism are operated by operating levers provided outside the main body.

Therefore, if the floppy disk is not set in the specified position, that is, the floppy disk is not completely inserted into the main body, and the operating lever is moved to drop the collet, the collet installed in the center of the floppy disk media There is a problem in that the edge of the opening is pinched between the knob of the drive motor and the collet, resulting in deformation or damage to that part.

To solve this problem, the collet of the collet mechanism can be operated by the operating lever only when the floppy disk is fully inserted into the main body. Therefore, we are developing a floppy dice drive device that has a mechanism that can detect when the floppy disk is fully inserted into the main body, but the detection mechanism is activated by an operation other than the operation of the control lever. This is complicated, and if you accidentally move the operation 1/bar for the collet mechanism without operating the detection mechanism, the opening edge of the floppy disk media may get caught between the drive motor hub and the collet. This has the disadvantage that the opening edges of the media held between the media may be deformed or damaged.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a floppy disk drive in which the opening edge of the floppy disk medium is not pinched between the collet and the hub of the drive motor even when the collet is moved by an operating lever.

[Summary of the invention]

A feature of the present invention is that a pale cam that operates the pail of the head rotor mechanism and a collet cam that operates the leaf spring of the collet mechanism are provided on a shaft provided inside the main body, and this shaft is connected to an operating lever provided outside the main body. In a rotating floppy disk drive device, the shaft includes a pin for turning on and off an important switch of the drive motor, and a pin that engages with a lock lever when the floppy disk is not fully inserted into the main body. In addition, a pin is provided to prevent rotation of the shaft.

According to the present invention, the lock lever, collet mechanism, head rotor mechanism, and important switches can be operated with one operating lever, and the operating lever is also moved when the floppy disk is not fully inserted into the main body. Therefore, the opening edge of the floppy disk medium will not be deformed or damaged due to being pinched between the collet and the hub of the drive motor.

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the drawings.

In the drawing, the main body 1 of the high-density mini-floppy disk device is made of die-cast aluminum.

A hole 1a and a hole 1b are provided in the center of the main body 1,
The drive motor 3 connects the screw 4 via the magnetic shield plate 2.
Fix it with. The drive motor 3 serves as a drive source for driving the floppy disk 5.

The drive motor 3 has a pilot part 3 that fits into the hole 1a.
A and a hub 3b for chucking the floppy disk 5 are provided.

The IgT surface shape of the main body 1 is H-shaped. Notches 1c and 1d are provided on the left and right sides of the main body 1. Notch lc.

A mounting plate 6 made of an iron plate with plastic outsert is fixed between 1d with screws 33.

A shaft 10 for operating a collet mechanism 7, a head rotor mechanism 8, and an on/off switch 9 for the drive motor 3 is rotatably supported on the mounting plate 6 by bosses 6a, 6b, and a receiving plate 11. . The bearing plate 11 is fixed by a tapping screw 12 and a spring pusher 13.

A collet cam 14 made of plastics that operates the collet mechanism 7 and a pale cam 15 made of plastics that operates the head load machine 8 are attached to the shaft 10 by pins 16.
Fix it with.

A switch bar 17 is rotatably supported on a shaft 6C provided on the mounting plate 6. A pin 18 for operating a switching bar 17 is fixed to the shaft 1o. The bearing plate 11 prevents the S/F note teleoper 17 from being removed in the thrust direction. A plastic operating lever 19 is fixed to one end of the shaft 1o by a screw 22 via a front panel 21. The operating lever 19 is attached to the shutters 71 and 10.
Identify the pin 2o that determines the rotational direction.

The important switch 9 is inserted into the hole 9a provided in the important switch 9.
The mounting 9 is attached by inserting the pin 6d provided on the mounting plate 6. The screw 9 spring 23 inserted into the shank) 10 is
One end is engaged with a pin 24 fixed to the shaft 1o, and the other end 23a is engaged with a pin 6d. The other end 23a of the torsion spring 23 is bent into a hollow shape and attached to the important switch 9.
Use it as a presser foot.

The plastic front panel 21 has a floppy disk insertion slot 25 in the center and a lamp 2 in the upper right corner.
A lamp hole 27 for 6 is provided integrally with a shaft 28 on the back surface of the upper left end. A torsion spring 29, a lock l/bar 30, and a washer 31 are inserted into the shaft 28, and a tapping screw 32 is attached to provide a lock lever 30 that can be rotated and assisted.

The lock lever 30 includes an engagement hole 30a that engages with the shaft 28, a cam 30b that abuts on the floppy disk 5, an engagement portion 30C that engages with the pin 24 provided on the shaft 10, and lower stopper portions 30d, 30e. has. Lock lever 30 is normally biased clockwise by torsion spring 29. 70 If the disc 5 is not inserted in the predetermined position, or if it is incompletely inserted, the lock lever 30 will rotate counterclockwise against the pressing force of the torsion spring 29. When the retaining portion 30G engages with the pin 24, the clockwise rotation of the operating lever 19 is stopped.

When the floppy disk 5 is inserted to the specified position,
The lock bar 30 rotates in the direction in which the torsion spring 29 is pressed, and the engaging portion 30C is disengaged from the pin 24, allowing the operating lever 19 to rotate clockwise.

Collet t17 is collet shaft 34, collet 3
5, a push spring 36, a ring cam 37, a bearing 38, a collar 39, an E-ring 40, a washer 41, a collet plate spring 42, and an E-ring 43. After inserting the collet 35, compression spring 36, ring cam 37, bearing 38, and collar 39 into the collet shaft 34, the E IJ ring 40 is press-fitted into the groove 34a of the collet shaft 34.

After inserting the washer 41 and collet plate spring 42 above the E-ring 40 into the collet shaft 34, the E-ring 43 is press-fitted into the groove 34b of the collet shaft 34. The collet 35, push spring 36, ring cam 37, bearing 38, collar 39, washer 41, and collet leaf spring 42 are rotatably provided on the collet shaft 34.

(See FIG. 12) A hollow portion 34C is provided at one end of the collet shaft 34. A collet shaft 45 provided in a plate-shaped collet receiver 44
The collet shaft 34 is rotatably provided on the collet shaft 45 by inserting the collet shaft 34 into the hollow portion 34C. The collet receiver 44 is fixed to a boss 6e provided on the mounting plate 6 with screws 46 and washers 47.

The collet plate spring 42 has a bifurcated shape 42a formed at one end sandwiched between the washer 41 and the E-ring 43, and the other end is supported by a pressing spring 48 and a pressing plate 49. The other end of the knot plate spring 42 is provided with a hole 42C that fits into the shaft 6f provided on the mounting plate 6, and a bent portion 42b formed by bending the circumference of the hole 42C.

A bent portion 42e on which the collet cam 14 comes into contact, and a long hole 421 inserted into the shaft 6g provided on the mounting plate 6 are provided in the center of the collet plate spring 42. A conical spring 5 is attached to the shaft 6g.
0 and washer 51. The collet leaf spring 42 is pushed upward by the spring force of the conical spring 50, using the hole 42C as a fulcrum. When the floppy disk 5 is set in a predetermined position and the operating member 19 is rotated clockwise, the collet cam 14 lowers the collet leaf spring 42. When the collet leaf spring 42 descends,
...The outer periphery of the collet 35 is pressed against the disk 3b via the floppy disk 5, so the drive motor 3
As the floppy disk 5 rotates, the floppy disk 5 rotates.

The light emitting element 3d is fixed to the substrate 3C of the drive motor 3. The light protect sensor 52, which receives light from the light emitting element 3d through the hole 1e of the main body 1, is located at a lip 6h provided on the mounting plate 6, and is located at a lip 61 provided on the mounting plate 6.
Fix it using tapping screws 53 and washers 54. The write protect sensor 52 has a function of making the floppy disk 5 ready for writing with a write signal while receiving light from the light emitting element 3d through the notch 5a of the floppy disk 5 and the hole 1e of the main body 1. If the notch 5a is covered with tape or the like, writing to the floppy disk 5 will no longer be possible.

The index sensor 55 is attached to a lip 6 provided on the mounting plate 6.
Use the cod knob screw 5G and washer 57 to attach to J so that C can be adjusted. The index sensor 55 transmits light from the light emitting element 3e provided on the substrate 3 to the hole 1 of the body 1.
By receiving light through f and 85C of the time medium 5b for writing to the floppy disk 5, the vertical position of the floppy disk 5 to start writing is detected.

The lead wire 58 from the write protect sensor 52, the lead wire 59 from the index sensor 55, and the lead wire 60 from the important switch 9 are secured to the three pins 6 provided on the mounting plate 6 at 6t. Pressing plate 49f covers the locking part: It is held on the mounting plate 6 by attaching it to the boss 6m of the receiving plate 6 using tapping screws 61 and washers 62.

The upper substrate 69 has a head terminal 70 and a terminal group 71, is positioned by guide pieces 6'n, 60 provided on the mounting plate 6, and a guide bin 611, and is positioned by an insulating plate 69.
It is fixed to the boss 6p provided on the mounting plate 6 via the hole a with two tapping screws 72 and a washer 73. The mounting plate 6 has two sets of two hinges 6r for fixing the head lead wire 121.

Establish 6S. On the back side of the mounting plate 60, lζ-sized butts 75 and 76 are adhesively fixed to prevent the media 5b in the floppy disk 5 from being ridged during rotation.

The lower board 77 has a terminal group 78, a card edge terminal 79 for system connection, and a power supply unit 80, and is fixed to the lower surface of the main body 1 with screws 82 and washers 83 via an insulating plate 81.

The head load mechanism 8 includes a solenoid 84, a yoke 85,
Arm 86, shafts 87, 88, screw spring 89, pale 9
0,91, tension springs 92,93, oak 94, pad 9
5, washer 97, E-ring 98, 99, 100, 10
1.Adjustment screws 102゜103 and locknaso l-10
It consists of 4,105 screws 9G and C, and is fixed to the 4 body 1.

Head 1 remains 106 is from Konbuuk/Sudem.
1t to and from the floppy disk 5 via the lower board 77 and the upper board 69.
Carriage 107, Hesodon''-mu 108, F head 1
09 and an upper head 110.

The carriage 107 has a lower head 109 fixed to the tip of the central portion, and has slide holes 113 and guides 114 on both sides in which guide shafts 111 and 112 are engaged. The carry and nozzle 107 are the 1ml fixed portions 1g, lh, and I of the main body 1.
Fix the shaft holder and screw 133 to I+IJ using the screw 9.

Carriage 7> 107 has steel belt fixing part 11
5 is integrally formed. The steel bell 116 is wrapped in proof and fixed to the steel belt with screws 119 and screws 120.

The /C lead wire 121 connected to the head 109 is connected to the head terminal 70 of the upper board 69.
The projecting piece 122 that engages with the pail 91 and the soil head 1
10, a mounting portion 108b to the carriage/107, a probing portion 108b, and the portion 108.
It has a leaf spring 108C for integrating a. The mounting portion 108b of the carriage 107 includes a spring support plate 123,
Screw 126 and washer 127 Nyoshi carriage 107
Fixed to. The torsion spring 124 is attached to a spring support plate 123 which is designed to provide an appropriate contact force between the floppy disk 5 and the upper head 110. Upper head 11
The lead wire 125 connected to 0 is fixed using the spring support plate 123.

A head shield plate 128 for noise prevention is fixed above the upper head 110.

Stepping Tanabata 129 is head I%4'tV?
106 and the motor mounting plate 130
It is fixed to the main body 1 via screws 131 and 132. A pulley 134 is attached to the motor shaft of the stepping Tanabata 129.
to be fixed. A steel belt 116 is attached to the pulley 134.
After winding, the steel bell l-116 is fixed with a square washer 135, a screw 136, and a washer 137.

The zero track sensor 138 detects the protruding piece 139 provided integrally on the carriage 107, and
Fix it to the main body 1 at 0. The head stopper screw 141 is threadedly fitted into the main body 1 and restricts the operation of the head mechanism 106.

A terminal 129b is provided at the tip of a motor lead wire 129a of the step motor 129. A lead wire 121 connected to the lower \rad 109 is connected to a head terminal 70 provided on the upper substrate 69 through a terminal 121a.

Terminals 142a and 142b are provided at both ends of the wiring 142 that connects the terminal group 78 of the lower board 77 and the terminal group 71 of the upper board 69.
will be established. The wiring 142 is installed as close as possible to the side wall of the main body 1. A solenoid lead wire 84a of the solenoid 84 is connected to the terminal group 71 through a terminal 84b. The lead wires 58, 59, and 60 are grouped together and connected to the wiring 14.
3, installed along the side wall of the main body 1, and the lower substrate 7
It is connected to the terminal group 78 of No. 7.

The wiring lines 142 and 143 are installed so as not to interfere with the operations of the collet mechanism 7, head loading mechanism 8, and head mechanism 106.

The lead wire 125 connected to the upper head 110 is installed close to the side wall of the main body 1 and bent into a substantially U-shape. The lead wire 125 is held down by the wiring 142 to prevent it from rising. The wiring 142 is installed by a wiring guide 144 so as not to come into contact with movable parts such as the head mechanism 106.

The wiring guide 144 has a substantially U-shaped cross section, and has a small hole 144 provided opposite to the small hole 1k provided on the bottom surface of the main body 1.
a, a U-shaped piece 144b, a protruding piece 144C that engages with a small hole 1t provided on the side wall of the main body 1, and a protruding piece 144d that engages with a bottle 1m provided on the bottom surface of the main body 1. The U-shaped piece 144b is fixed to the main body 1 with a screw 144e and a washer 144f using the small holes 144a and lk.

The F head 109 of the head mechanism 106 is shaped like a button. The carriage 107 is formed with a recess 107a for installing the lower head 109 and a plate 145 made of a leaf spring. A flat protrusion 107b is formed in the center of the recess 107a, and small protrusions 107C are formed in the corners. The plate 145 has rising walls 14.5a and 145b on only three sides.
, 145C, and a recess 1 adjacent to the remaining surface.
A small hole 145d is provided in which the small protrusion 107c of No. 07a engages.

The lower five dowels 109 are arranged so as to contact the upright wall 145b of the plate 145. Standing wall 14 of Great 145
5. The portion between I and 145C and the lower head 109 is the lower head adhesive portion 146. The lower head 109 is fixed to Gray 1-145 with adhesive.

V-1-14,5 has a small hole 145d and a small protrusion 107c.
By fixing only the retaining portion with adhesive 147, it is supported like a cantilever beam. Flat part 107 of carriage 107
b and the flat portion 107d on which the small protrusion 107C is formed are approximately the same height. Upper surface part 109 of lower head 109
The lower head 109 and the play 1-145 are adhesively fixed to the carriage 107 so that the guide shafts 111 and 112 are parallel to each other. Make sure that the adhesive does not flow into the back side of the part of the grate 145 where the lower head 109 is attached. The carriage 107 is connected to the rising wall 1
07e, 107f, and 107g are formed into a box shape. (See FIGS. 14 to 17 and 19) A recess 107h is formed at the end of the carriage 107 for adhesively fixing a claw 108d provided on a portion 108b of the head arm 108. The claw 108d and the recess 107h are
The dimensions are such that it is in a loose state, and after adjusting the position, the recess 1
Fix by injecting adhesive at 07h. (See Figure 18) The plate spring 108c is made of synthetic resin~\radome 108
The portion 108a forming the
mold. The receiving portion 1o8b has an elastic support structure that moves up and down the entire circumference of the screw 126. head arm 10
8 is supported in a cantilever shape with the claw 108d as a fulcrum. An upper head 110 is attached to the head arm 108 at a position facing the lower head 109. The upper head 110 is
It is fixed to the gimbal spring 147. The gimbal spring 147 is fixed to the back surface of the head boom 108 using screws 148. Above the portion of the head arm 108 where the upper head 110 is located, a center pivot 108e is formed integrally with the upper head 110. center pivot 108
The upward movement of the upper head 110 is controlled by i! i
Limit lJ. (See FIGS. 10 and 11) A torsion spring 124 provided on the spring support plate 123 extends above the upper head 110 and is in contact with the center pivot 108e. For this purpose, the spring constant of the notch spring 124 can be set low, so that the head arm 108 can be set to a low spring constant.
This makes it easy to design a sea urchin that does not curve downward.

A space S is formed between the mounting plate 6 and the upper surface of the main body 1, as shown in FIG. 6, in which a floppy disk 5 is accommodated. On one side of the mounting plate 6, insertion guides PI and P2 made of plastic are integrally formed.

A large number of ribs 1 and EL are integrally formed on the upper surface of the main body 1 forming a storage space for the Florapill disk 5. On the bottom surface of the main body 1, which is the mounting surface for the drive motor 3,
A large number of ribs 11t2 are integrally formed.

As shown in FIGS. 1 and 9, the outer wall of the main body 1 has a concave portion (IP) for attaching the step motor 129 to the outer wall of the main body, and a large number of ventilation holes IQ+ and IQ2.
, IQ3 are provided. The ventilation port IQ+ is used to cool the area around the lower part of the head load mechanism 8. Ventilation port IQ
2 is used to cool the area around the lower part of the head mechanism 106. The ventilation port IQ3 is used to cool the drive motor 3.

A printed circuit board to which various electrical components are attached and various wirings are provided is divided into two parts: an upper board 69 and a lower board 77. The lower substrate 77 is adjacent to the drive motor 3 provided on the bottom side of the main body 1 and is provided on the bottom side of the main body 1 . The upper board 69 is located above the drive Tanabata 3 and of the main body 1.
It is fixed on the mounting plate 6 provided on the second side.

The upper surface of the main body 1 secures the storage space necessary to accommodate the mounting plate 6. 3 bosses 6a, 6b, shaft 5c, pin 6d, boss 6e1 shaft 6f, 6g, guide pins 6h, 6i, Rib 6", pin 6
, 6t, boss 6m, guide pieces 6n, 5o, boss f
3p, pins 6r, 6s and insertion guide PI.

P2 is entirely made of plastic and is integrally formed by outsert to the mounting plate 6.

According to the above configuration, the floppy disk 5 is inserted into the storage space S from the floppy disk insertion slot 25. A state in which the opening edge provided at the center of the media 5b of the floppy disk 5 and the outer circumference of the hub 3b of the drive motor 3 almost match (hereinafter, this state is referred to as a fully inserted state, and any state other than the fully inserted state is referred to as an incompletely inserted state) ), even if you try to rotate the operating lever 19, the shaft 10 will not rotate because the pin 24 engages with the engaging portion 30C of the lock lever 30, as shown in FIG. Therefore, the important switch 9, collet mechanism 7 and -
\Rad door mechanism 106 does not operate.

When the operating lever 19 does not rotate, the floppy disk 5 is pushed into the main body 1 again. When the floppy disk 5 is fully inserted, the lock lever 30 is rotated by the torsion spring 29 as shown in FIG. The rotation becomes the free target. Therefore, when the operating lever 19 is rotated, the shaft 10 is rotated.
The on/off switch 9 is turned on, the collet leaf spring 42 of the collet mechanism 7 is pushed downward, and the pails 90, 91 of the head load mechanism 106 are pushed downward.

When the collet plate spring 42 of the collet mechanism 7 is pushed downward by the collet cam 14, as shown in FIG.
It rotates downward about the shaft 6f as a fulcrum against the spring force of the conical spring 50. When the collet plate spring 42 rotates upward,
The collet 35 descends, and the floppy disk 5 is held between the collet 35 and the hub 3b of the drive motor 3.

In this state, when the drive motor 3 is rotated, the floppy disk 5 is rotated. When the shaft 10 is rotated and the collet cam 14 is returned to its original position, the collet leaf spring 4
2 is rotated upward by the conical spring 50 about the shaft 6f as a fulcrum. This rotation causes the collet 35 to rise by υ, so that the floppy disk 5 is released from being held between the collet 35 and the hub 3b of the drive motor 3, and the floppy disk 5 is moved into the storage space. It becomes possible to extract from S.

The head loading mechanism 8 operates as shown in FIGS. 24 to 27. That is, when the operating lever 19 is not operated, the camp a between the upper head 110 and the lower head 109 is greater than the thickness of the floppy disk 5, as shown in FIG. 24, and the solenoid 84 is turned off. is in a state.

Insert the floppy disk 5 completely into the storage space S,
And operation lever 19'! ! When the pail 90 is rotated, as shown in FIG.
4 pushes the pale 91 downward. -<Il91
When the rad arm 108 is lowered, the rad arm 108 is also lowered by the amount of the lowering, and the gap b between the upper head 110 and the lower head 109 becomes smaller than the gap a shown in FIG.

At this time, the solenoid 84 is in the off state,
The upper head 110 is the media V' of the floppy disk 5.
C They remain close together.

When the solenoid 84 is turned on in the state shown in FIG. 25, the arm 86 moves the pail 9
1 is pushed downward, the head arm 108 also descends, the upper head 110 contacts the upper surface of the medium of the floppy disk 5, and the F head 109 contacts the lower surface of the medium of the floppy disk 5. Information can be read from the floppy disk 5. At this time, a cap C is provided between the pail 91 and the protrusion 122a provided on the gutter arm 108.

In the state shown in FIG. 26, when the operation J/<-19 is rotated and returned to its original position, the pail cam 15 is also rotated and returned to its original position, so that the pale 90 is pulled up by the tension spring 93. At this time, the pail 90 engages with the protruding piece 122, and -
\Since the rad arm 108 is raised more than shown in FIG. 27, there is a gap between the upper head 110 and the lower head 109.

d, no excessive force is applied to the upper head 110 and the lower head 109 when the floppy disk 5 is pulled out from the metal body 1.

The head mechanism 1o6 slides on the kite shafts 111 and 112 by a stepping motor 129. That is, when the stepping motor 129 rotates, the steel plate A/) 116 is wound around the pulley 134, and the carriage 107 moves by the amount of the winding 7', thereby moving the upper and lower rads 110 and 116 relative to the floppy disk. The position of 109 is questionable. The track position on the floppy disk can be freely selected by moving the carriage 107 by rotating the slide motor 129 in the forward and reverse directions.

In this embodiment, the mounting shaft 28, which is the rotational shaft of the lock lever 30, is formed integrally with the front pile 21 to reduce the number of parts. Further, in this embodiment, the lock lever 30 is provided with upper and lower stoppers 30d and 30e. By bringing the double wrapper 30d into contact with the back side of the front pile 21 in the state shown in FIG. 4, and by bringing the lower stopper 30e into contact with the back side of the floppy disk insertion slot 25 in the state shown in FIG. 3
0 does not rotate more than necessary. The curved surface formed on the retaining portion 30c of the lock lever 30 has the function of drawing the pin 24 to the center of the engaging portion 30C even when the pin 24 and the lock lever 30 are not centered.

〔Effect of the invention〕

As described above, according to the present invention, the operating lever does not rotate until the floppy disk is not completely inserted into the main body, and the operating lever does not rotate when the floppy disk is completely inserted into the main body. A floppy disk that rotates to accurately hold the opening edge provided in the center of the floppy disk medium between the knob of the drive motor and the collet, thereby preventing the opening edge from being deformed or damaged. The drive unit can be changed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an exploded perspective view of the main body, FIG. 2 is an exploded perspective view of the mounting plate, FIG. 3 is a top view, and FIGS. An explanatory diagram of the operation of the lock lever, Fig. 6 is a sectional view of the collet mechanism, Fig. 7 is an exploded perspective view showing the mounting positions of the upper and lower boards, Fig. 8 is an exploded perspective view of the herad load mechanism, and Fig. 9 is an exploded perspective view of the herad load mechanism. Figure 10 is an exploded perspective view of the head mechanism, and Figure 11 is an enlarged sectional view of the head mechanism.
The figure is an enlarged sectional view of the head mechanism section, Figures 12 and 13 are exploded perspective views of the wiring guide attachment part, Figure 14 is an enlarged sectional view of the upper and lower head attachment parts, and Figure 15 is an enlarged sectional view of the lower head attachment part. An enlarged top view, FIG. 16 is an enlarged perspective view of the lower head attachment parts, FIG. 17 is an enlarged perspective view of the head, FIG. 18 is an enlarged sectional view of the helad arm attachment part, and FIG. 19 is an important part of the carriage. An enlarged perspective view, Fig. 20 is a left side view of Fig. 3,
Figure 21 is the right side view of Figure 3, Figure 22 is the X-
23 is a front view of FIG. 3, and FIGS. 24 to 27 are explanatory views of the operation of the head loading mechanism. 1...Main body, 3...Drive motor, 5...Floppy disk, 7...Collet machine? Island 8...Head opening~do mechanism, 9...Important switch, 10...Zack, 14...Collet cam, 15...Pail cam, 18...Pin, 19...Operation lever, 21・・・
70 Point panel, 24... Pin, 25... Floppy disk insertion slot, 28... Mounting shaft, 29... Torsion spring, 30... Lock bar, 30a... Fitting hole, 30b... ...Cam, 30C...Engagement part, 30d,
30e...Upper/lower stopper, 42...=4/Y4-B crown 5 V/no U-451- Toe 720 Meg 13 figure dtLf-Figure Meg 15 figure Y/Lot mouth VlB figure ゛Y21 figure Y2 pieces Figure ¥257 Y2 Otsu figure

Claims (1)

[Claims] 1. A pail cam (15) that operates the pail (90) of the head load mechanism (8), and a collet cam (14) that operates the leaf spring (42) of the collet mechanism (7), Main body (
1) an operating lever (19) provided on the shaft (1o) provided on the outside of the main body (1)
In the floppy disk drive device, a drive motor (3) is attached to the shaft (10).
When the floppy disk (5) is incompletely inserted into the main body (1), the pin (18) for controlling the important switch (9) engages with the Nirotsukreha (30) and closes the shaft (1o). ) A floppy disk drive device characterized in that it is provided with a pin (24) for preventing rotation of the floppy disk drive device. 2. When the floppy disk (5) is set in the proper position in the main body (1), the pin (24) and lock lever (30) are released and the shaft (1o)
The 70-tube disk movement device according to claim 1, wherein the 70-tube disk movement device is rotatable by the operating lever (19). 3. The floppy disk according to claim 1, wherein the main body (1) has a front panel (21) which forms at least a floppy disk insertion slot (25) and is made of plastic. Drive device. 4. A lock lever (30) that engages with the pin (24)
4. The floppy disk and drive device according to claim 3, wherein the floppy disk is attached to a mounting shaft (28) provided on the back surface of the front panel (21). 5. The lock lever (30) has a fitting hole (30a) that fits into the mounting shaft (28) and a floppy disk (5).
A cam (30b) that abuts on the top, a retaining part (30C) that engages with the pin (24) provided on the shank (10) to prevent rotation of the shank (10), and a lock lever. The vertical stopper (30d) that regulates the rotation of (30)
), (30e), and the shan l-(10
2. The floppy disk drive device according to claim 1, wherein the floppy disk drive device is configured to be biased in a direction opposite to the rotating direction of the floppy disk drive device.