JPS6258060B2 - - Google Patents

Description

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

[Prior art]

A conventional floppy disk drive device is configured to operate a collection mechanism and a head load mechanism using an operating lever provided outside the main body.
Therefore, if the floppy disk is not set in the specified position, that is, the floppy disk is not fully inserted into the main body, and the control lever is moved to drop the collection, the floppy disk's media will be removed. There is a problem in that the opening edge provided in the center of the drive motor is pinched between the hub 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 disk drive device that is equipped with a mechanism that can detect when the floppy disk is fully inserted into the main body. It is complicated to operate, and if you accidentally move the control lever for the collection mechanism without operating the detection mechanism, the opening edge of the floppy disk media may become stuck between the drive motor hub and the collector. This has the drawback that the opening edge 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 device in which the opening edge of the media of the floppy disk is not pinched between the collet and the hub of the drive motor even when the collet is moved by an operating lever. It is in.

[Summary of the invention]

A feature of the present invention is that a bail cam that operates the bail of the head load mechanism and a collect cam that operates the leaf spring of the collect mechanism are provided on a shaft provided inside the main body, and this shaft is rotated by an operating lever provided outside the main body. In the floppy disk drive device, the shaft includes a pin that turns on and off an on/off switch of the drive motor, and a pin that engages with the lock lever when the floppy disk is incompletely inserted into the main body. and a pin for preventing rotation of the shaft.

According to the present invention, by one operating lever,
The lock lever, collect mechanism, head load mechanism, and on/off switch can be operated, and if the floppy disk is not fully inserted into the main body, the operating lever cannot be moved, so the floppy disk media opening can be operated. The edge is clamped between the collet and the hub of the drive motor and will not become deformed or damaged.

[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 aluminum die-casting. In the center of the main body 1, there are a hole 1a and a mounting screw hole 1.
b is provided, and the drive motor 3 is fixed with screws 4 via the magnetic shield plate 2. Drive motor 3
serves as a driving source for driving the floppy disk 5. The drive motor 3 is provided with a spigot portion 3a that fits into the hole 1a and a hub 3b for chucking the floppy disk 5.

The cross-sectional 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 1
A mounting plate 6 made of iron plate with plastic outsert is fixed between c and 1d with screws 33.

A shaft 10 for operating the collector mechanism 7, head load mechanism 8, and on/off switch 9 of the drive motor 3 is rotatably supported on the mounting plate 6 by bosses 6a, 6b and a bearing plate 11. Bearing plate 11
, tapping screw 12 and spring washer 1
Fix by 3.

A plastic collect cam 14 for operating the collect mechanism 7 and a plastic bail cam 15 for operating the head load mechanism 8 are fixed to the shaft 10 with pins 16.

A switch lever 17 is rotatably supported on a shaft 6c provided on the mounting plate 6. On shaft 10,
The pin 18 that operates the switch lever 17 is fixed. The switch bar 17 is prevented from coming off in the thrust direction by the bearing plate 11. A plastic operating lever 19 is fixed to one end of the shaft 10 with a screw 22 via a front panel 21. A pin 20 for positioning the operating lever 19 in the rotational direction is fixed to the shaft 10.

The on/off switch 9 is attached by inserting a pin 6d provided on the mounting plate 6 into a hole 9a provided in the on/off switch 9. The torsion spring 23 inserted into the shaft 10 has one end locked to a pin 24 fixed to the shaft 10, and the other end 23a locked to the pin 6.
d. The other end 23a of the torsion spring 23 is
Bend it into a roughly shape and use it as a presser for the on/off switch 9.

The plastic front panel 21 includes
A floppy disk insertion slot 25 is provided at the center, a lamp hole 27 for a lamp 26 is provided at the upper right end, and a shaft 28 is integrally provided at the back surface of the upper left end. axis 28
The lock lever 30 is rotatably provided by inserting a torsion spring 29, a lock lever 30, and a washer 31, and attaching a tapping screw 32 to the lock lever 30.

The lock lever 30 has an engagement hole 30 with the shaft 28.
a. Cam 30 abutting on floppy disk 5
b, an engaging portion 30c that engages with the pin 24 provided on the shaft 10 and upper and lower stopper portions 30d, 30e;
has. The lock lever 30 is normally biased clockwise by a torsion spring 29. When the floppy disk 5 is not inserted to the predetermined position, that is, in the case of incomplete insertion, the lock lever 30 resists the pressing force of the torsion spring 29,
By rotating counterclockwise and engaging the engaging portion 30c with the pin 24, the clockwise rotation of the operating lever 19 is stopped.

When the floppy disk 5 is inserted to a predetermined position, the lock lever 30 rotates in the direction in which the torsion spring 29 is pressed, and the engaging portion 30c is disengaged from the pin 24, thereby preventing the clockwise rotation of the operating lever 19. It becomes possible.

The collet mechanism 7 includes a collet shaft 34, a collet 35, 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.
It is equipped with After inserting the collet 35, compression spring 36, ring cam 37, bearing 38 and collar 39 into the collet shaft 34, the E-ring 40 is press-fitted into the groove 34a of the collet shaft 34. After inserting the washer 41 and the collector leaf spring 42 above the E-ring 40, the E-ring 43 is press-fitted into the groove 34b of the collect shaft 34. Collet 35, push spring 3
6, ring cam 37, bearing 38, collar 3
9. The washers 41 and collector leaf springs 42 are:
It is rotatably provided on the collector shaft 34.
(See Figure 12) A hollow part 34 is provided at the upper end of the collect shaft 34.
Provide c. By inserting the collet shaft 45 provided in the plate-shaped collet receiver 44 into the hollow portion 34c, the collet shaft 34 is rotatably mounted on the collet shaft 45. The collet receiver 44 has a screw 46 and a washer 4 attached to a boss 6e provided on the mounting plate 6.
Fix at step 7.

The collector leaf 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 collector leaf spring 42 is provided with a hole 42c that fits into the shaft 6f provided with the mounting plate 6, and a bent portion 42b formed by bending the circumference of the hole 42c.

A bent portion 42e with which the collect cam 14 comes into contact, and an elongated hole 42f inserted into a shaft 6g provided on the mounting plate 6 are provided in the center of the collect plate spring 42. A conical spring 50 and a washer 51 are inserted into the shaft 6g. The collector plate 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 lever 19 is rotated clockwise, the collect leaf spring 42 is lowered by the collect cam 14. When the collector plate spring 42 descends, the outer circumference of the collector 35 is pressed against the hub 3b via the floppy disk 5, so that the floppy disk 5 rotates as the drive motor 3 rotates.

The light emitting element 3d is attached to the substrate 3c of the drive motor 3.
Fixed to. 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 rib 6h provided on the mounting plate 6, and a tapping screw 5 is attached to the rib 6i provided on the mounting plate 6.
3 and a washer 54 to fix it. The write protect sensor 52 is connected to the floppy disk 5.
When receiving light from the light emitting element 3d through the notch 5a of the main body 1 and the hole 1e of the main body 1, the light emitting element 3d has a function of enabling writing by a write signal. If the notch 5a is covered with tape or the like, writing to the floppy disk 5 becomes impossible.

The index sensor 55 is adjustably attached to a rib 6j provided on the mounting plate 6 using a tapping screw 56 and a washer 57. The index sensor 55 includes a light emitting element 3e provided on the substrate 3.
The light from
The writing start position of the floppy disk 5 is detected by receiving light through the floppy disk 5.

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 on/off switch 9 are as follows.
After being locked to the three pins 6k and 6l provided on the mounting plate 6, by attaching the pressing plate 49 to the boss 6m of the mounting plate 6 with the tapping screws 61 and washers 62 so as to cover the locked part, It is held on the mounting plate 6.

The upper substrate 69 has a head terminal 70 and a terminal group 71.
and a guide piece 6 provided on the mounting plate 6.
A tapping screw 72 and a washer 7 are attached to the boss 6p, which is positioned by the guide pins 6h and 6o and is provided on the mounting plate 6 via the insulating plate 69a.
Fix at step 3. The mounting plate 6 has two sets of two pins 6r, 6 for fixing the head lead wire 121.
Provide s. Patches 75 and 76 are adhesively fixed to the back surface of the mounting plate 6 to prevent the media 5b inside the floppy disk 5 from undulating during rotation.

The lower substrate 77 has a terminal group 78, a card edge terminal 79 for system connection, and a power socket 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, an arm 86, shafts 87, 88, a torsion spring 89, bails 90, 91, tension springs 92, 93,
Collar 94, Pad 95, Washer 97, E-ring 98, 99, 100, 101, Adjustment screw 10
2 and 103 and locknights 104 and 105, and is fixed to the main body 1 with screws 96.

The head mechanism 106 writes and reads signals from the computer system to and from the floppy disk 5 via the lower board 77 and upper board 69, and receives signals from the carriage 107, head arm 108, lower head 109, and upper head 110. Become.

The carriage 107 has a lower head 1 at the tip of the center part.
09 and guide shaft 1 on both sides.
11 and 112 have a sliding hole 113 and a guide 114 for engagement. The carriage 107 is fixed to the fixing portions 1g, 1h, 1i, and 1j of the main body 1 with shaft holders and screws 133.

A steel belt fixing part 115 is integrally formed on the carriage 107. steel belt 11
6 has an alpha winding, and the steel belt seats 117, 1 of the steel belt fixing part 115
18 with screws 119 and washers 120.

The lead wire 121 connected to the lower head 109 is
Connect to the head terminal 70 of the upper substrate 69. The head arm 108 has a protruding piece 1 that engages with the bail 91.
22 and a portion 108a where the upper head 110 is provided.
, a mounting portion 108b for attaching to the carriage 107, and a leaf spring 108c for integrating the mounting portion 108b and the portion 108a. Carriage 1
The mounting part 108b of 07 is attached to the carriage 1 by means of a spring support plate 123, screws 126 and washers 127.
Fixed to 07. The torsion spring 124 is used to obtain an appropriate contact force between the floppy disk 5 and the upper head 110, and is attached to the spring support plate 123. Lead wire 1 connected to upper head 110
25 is fixed using a spring support plate 123.
A head shield plate 128 for noise prevention is fixed above the upper head 110.

The stepping motor 129 is connected to the head mechanism 10.
6, and the motor mounting plate 13
0 to the main body 1 with screws 131 and 132. A pulley 134 is fixed to the motor shaft of the stepping motor 129. After winding the steel belt 116 around the pulley 134, the steel belt 116 is passed through a square washer 135,
Fix with screws 136 and washers 137.

The zero track sensor 138 is connected to the carriage 10.
7 is fixed to the main body 1 with screws 140. The head stopper screw 141 is threadedly fitted into the main body 1,
It regulates the operation of the head mechanism 106.

Motor lead wire 129 of step motor 129
A terminal 129b is provided at the tip of a. The lead wire 121 connected to the lower head 109 is connected to the upper board 69.
The terminal 121a is connected to the head terminal 70 provided at the terminal 121a.

The terminals 14 are connected to 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.
2a and 142b are provided. The wiring 142 is connected to the main body 1
Install it as close as possible to the side wall of the The solenoid lead wire 84a of the solenoid 84 is connected to the terminal 8
4b to the terminal group 71. Lead wire 5
8, 59, and 60 are grouped together to form a wiring 143, which is installed along the side wall of the main body 1, and is connected to 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 collect mechanism 7, head load mechanism 8, and head mechanism 106.

The lead wire 125 connected to the upper head 110 is
It 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. Wire 14
2 is connected to the head mechanism 10 by the wiring guide 144.
Install it so that it does not come into contact with moving parts such as 6.

The wiring guide 144 has a substantially U-shaped cross section, and has a small hole 144a provided opposite to the small hole 1k provided on the bottom surface of the main body 1, a U-shaped piece 144b, and a small hole 144a provided on the side wall of the main body 1. Projection piece 144 that locks into small hole 1l
c, and a protruding piece 144d that engages with a pin 1m provided on the bottom surface of the main body 1. The U-shaped piece 144b is screwed into the screw 144 using the small holes 144a and 1k.
It is fixed to the main body 1 with the washer 144f and the washer 144f.

The lower head 109 of the head mechanism 106 is shaped like a button. The carriage 107 has a lower head 10.
9 and a recess 107a for installing a plate 145 made of a leaf spring. In the recess 107a, a flat protrusion 107b is formed in the center portion, and a small protrusion 107c is formed in the concave portion. plate 145
has standing walls 145a, 145b, 14 only on three sides.
5c, and a concave portion 1 adjacent to the remaining surface.
Small hole 145d that the small projection 107c of 07a engages with
will be established. The lower head 109 is arranged so as to contact the upright wall 145b of the plate 145. A portion between the rising walls 145a, 145c of the plate 145 and the lower head 109 is a lower head adhesive portion 146. Lower head 109 is fixed to plate 145 with adhesive. The plate 145 has a small hole 145d.
Apply adhesive 147 to only the engaging portion of the small protrusion 107c.
Cantilever-like support is achieved by fixing the The flat part 107b of the carriage 107 and the small protrusion 10
7c is approximately the same height as the formed flat portion 107d. The lower head 109 and plate 145 are adhesively fixed to the carriage 107 so that the upper surface 109a of the lower head 109 and the guide shafts 111, 112 are parallel to each other. of plate 145,
On the back side of the part where the lower head 109 is attached,
Make sure that the adhesive does not flow. The carriage 107 is connected to the rising walls 107e, 107f, 107.
g to form a box shape. (Figures 14 to 17
19) At the end of the carriage 107, there is a head arm 1.
A recess 107h is formed for adhesively fixing the claw 108d provided in the portion 108b of 08. Claw 108
d and the recess 107h are dimensioned to be in an loose state, and after the position adjustment is continued, they are fixed by injecting adhesive into the recess 107h. (See Fig. 18) The leaf spring 108c includes a portion 108a forming the head arm 108 made of synthetic resin and a mounting portion 108b.
insert molding. The mounting portion 108b has an elastic support structure that moves up and down the outer periphery of the screw 126. The head arm 108 is supported in a cantilever shape with the claw 108d as a fulcrum. Head arm 108
An upper head 110 is attached at a position opposite to the lower head 109. Upper head 110 is fixed to gimbal spring 147. gimbal spring 147
is fixed to the back surface of the head arm 108 using screws 148. Upper head 1 of head arm 108
A center pivot 108e is formed integrally with the upper head 110 above the portion where the head 10 is located.
By center pivot 108e, upper head 1
Limit upward movement of 10. (See Figures 10 and 11) Torsion spring 124 provided on spring support plate 123
extends over the upper head 110 and is in contact with the center pivot 108e. For this reason, the spring constant of the torsion spring 124 can be set low, making it easy to design the head arm 108 so that it will not bend 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 the floppy disk 5 is accommodated. Insertion guides P ₁ and P ₂ made of plastic are integrally formed on the lower surface of the mounting plate 6. A large number of ribs _1R1 are integrally formed on the upper surface of the main body 1 forming a storage space for the floppy disk 5. A large number of ribs _1R2 are integrally formed on the lower surface of the main body 1, which is the mounting surface for the drive motor 3.

As shown in FIGS. 1 and 9, the outer wall of the main body 1 has a recess (1P) for attaching the step motor 129 to the outer wall of the main body, and a number of ventilation holes 1Q ₁ , 1Q ₂ , 1Q. ₃ . Ventilation port 1Q ₁
is used to cool the area around the lower part of the head load mechanism 8. The ventilation port 1Q ₂ is the head mechanism 106
Used to cool the area around the bottom of the Ventilation port 1
Q ₃ is used to cool the drive motor 3.

A printed circuit board to which various electrical components are attached and which is provided with various starting lines 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 substrate 69 is fixed on the mounting plate 6 provided above the drive motor 3 and on the upper surface side of the main body 1.

By making the upper surface of the main body 1 lower on the side on which the head mechanism 106 is provided than on the side on which the mounting plate 6 is provided, a storage space necessary for storing the head mechanism 106 and the head load mechanism 8 is secured.

Bosses 6a, 6b, shaft 6c, pin 6d, boss 6
e, shafts 6f, 6g, guide pins 6h, 6i, ribs 6j, pins 6k, 6l, boss 6m, guide piece 6
n, 6o, bosses 6p, pins 6r, 6s, and insertion guides P ₁ , P ₂ are all made of plastic, and are 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.
Insert. Media 5 from Floppy Disk 5
The opening edge provided in the center of the drive motor 3 is in a state where the outer circumference of the hub 3b of the drive motor 3 almost matches (hereinafter, this state will be referred to as a fully inserted state, and any state other than the fully inserted state will be referred to as an incompletely inserted state). If there is no lock lever 19, 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. 9. The collect mechanism 7 and head load mechanism 106 do 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 fifth
As shown in the figure, the lock lever 30 is rotated by the torsion spring 29 and the engaging portion 30c of the lock lever 30 is separated from the pin 24, so that the shaft 1
0 can be rotated freely. Therefore, when the operating lever 19 is rotated, the shaft 10 is rotated,
The on/off switch 9 is turned on, and the collection leaf spring 42 of the collection mechanism 7 is pushed downward.
The bails 90, 91 of the head load mechanism 106 are pushed downward.

The collector leaf spring 42 of the collector mechanism 7 has a sixth
As shown in the figure, when pushed downward by the collect cam 14, the conical spring 50 pivots around the shaft 6f.
rotates downward against the spring force. When the collet leaf spring 42 rotates downward, 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 collect cam 14 is returned to its original position, the collect leaf spring 42 is rotated upward by the conical spring 50 about the shaft 6f. This rotation causes the collet 35 to rise, 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 removed from the storage space S. It is possible to pull it out.

The head loading mechanism 8 operates as shown in FIGS. 24 to 27. That is, when the operating lever 19 is not operated, the gap 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. It is becoming a state.

When the floppy disk 5 is completely inserted into the storage space S and the operating lever 19 is rotated, the bail 90 is moved to the bail cam 1 as shown in FIG.
5 and the bail 91 is pushed downward by the lock nut 104 provided on the bail 90. When the bail 91 descends, the head arm 108 also descends by the amount of the descent, and the upper head 1
10 and the lower head 109 is the second
It is smaller than the gap a shown in Fig. 4. At this time, the solenoid 84 is in the off state,
The upper head 110 remains close to the media of the floppy disk 5.

When the solenoid 84 is turned on in the state shown in FIG. 25, the bail 91 is pushed downward by the arm 86 and the head arm 108 is also lowered, as shown in FIG. The lower head 109 contacts the upper surface of the media of the disk 5, and the lower head 109
comes into contact with the bottom surface of the media. Information can be read from the floppy disk 5. At this time, a gap c is provided between the bail 91 and the protrusion 122a provided on the head arm 108.

In the state shown in FIG. 26, when the operating lever 19 is rotated and returned to its original position, the bail cam 15 is also rotated and returned to its original position, so that the bail 90 is pulled up by the tension spring 93. At this time, the bail 90 engages with the protruding piece 122 and lifts the head arm 108 as shown in FIG.
There is a large gap d between 10 and the lower head 109.
Therefore, when pulling out the floppy disk 5 from the main body 1, the upper head 110 and lower head 1
No excessive force is applied to 09.

The head mechanism 106 is connected to the stepping motor 12
9 to slide on guide shafts 111, 112. That is, stepping motor 129
When the steel belt 1 rotates, the steel belt 1 is attached to the pulley 134.
16 is wound up, the carriage 107 moves by the amount that is wound up, and the upper head 110 and lower head 10 are moved relative to the floppy disk.
The position of 9 changes. The track position on the floppy disk can be freely selected by moving the carriage 107 by rotating the stepping 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 panel 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. In the state shown in Fig. 4, move the upper stopper 30d to the front panel 21.
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. 5, the lock lever 30 is prevented from rotating more than necessary.
The curved surface formed on the engaging portion 30c of the lock lever 30 has the function of drawing the pin 24 to the center of the engaging portion 30c even if the centers of the pin 24 and the lock lever 30 are misaligned.

〔Effect of the invention〕

As described above, according to the present invention, the operating lever does not rotate until the floppy disk is completely inserted into the main body, and when the floppy disk is completely inserted into the main body, the operating lever does not rotate. When the lever rotates, the opening edge provided in the center of the media of the floppy disk is accurately clamped between the hub of the drive motor and the collet, thereby preventing the opening edge from being deformed or damaged. A twee disc drive is obtained.

[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 lock lever operation, Figure 6 is a sectional view of the collector mechanism, Figure 7 is an exploded perspective view showing the mounting positions of the upper and lower boards, Figure 8 is an exploded perspective view of the head load mechanism, and Figure 9 is the head mechanism. Figure 10 is an exploded perspective view of the parts, and Figure 10 is an enlarged sectional view of the head mechanism.
Figure 1 is an enlarged cross-sectional view of the head mechanism, Figures 12 and 13 are exploded perspective views of the wiring guide mounting part,
Figure 4 is an enlarged sectional view of the upper and lower head installation parts, No. 15
The figure is an enlarged top view of the lower head attachment part, Figure 16 is an enlarged sectional view of the lower head attachment part, Figure 17 is an enlarged sectional view of the lower head, Figure 18 is an enlarged sectional view of the head arm attachment part, and Figure 19 is an enlarged sectional view of the lower head attachment part. is an enlarged perspective view of the main parts of the carriage, Figure 20 is a left side view of Figure 3, and Figure 2 is a left side view of Figure 2.
Figure 1 is the right side view of Figure 3, Figure 22 is the X in Figure 3.
-X sectional view, Figure 23 is the front view of Figure 3, Figure 24
27 are explanatory diagrams of the operation of the head load mechanism. 1...Main body, 3...Drive motor, 5...Floppy disk, 7...Collection mechanism, 8...
Head load mechanism, 9... On/off switch, 10...
...shaft, 14 ... collect cam, 15 ... bail cam, 18 ... pin, 19 ... operation lever,
21...front panel, 24...pin, 25...
...Floppy disk insertion slot, 28...Mounting shaft,
29...Torsion spring, 30...Lock lever, 3
0a... Fitting hole, 30b... Cam, 30c... Engaging portion, 30d, 30e... Vertical stopper, 42
...Plate spring, 90...Bail.

Claims (1)

[Claims] 1. A bail cam 15 for operating the bail 90 of the head load mechanism 8 and a leaf spring 42 of the collet mechanism 7.
In a floppy disk drive device, a collect cam 14 for operating a collector cam 14 is provided on a shaft 10 provided inside the main body 1, and the shaft 10 is rotated by an operating lever 19 provided outside the main body 1. , a pin 18 that turns on and off the on/off switch 9 of the drive motor 3, and a pin 18 that engages with the lock lever 30 and locks the shaft 10 when the floppy disk 5 is incompletely inserted into the main body 1.
A floppy disk drive device characterized in that a pin 24 is provided for preventing rotation of the floppy disk. 2. When the floppy disk 5 is set in the proper position in the main body 1, the engagement between the pin 24 and the lock lever 30 is released, and the shaft 10 can be rotated by the operating lever 19. A floppy disk drive device according to claim 1, characterized in that: 3. The floppy disk drive device according to claim 1, wherein the main body 1 has a front panel 21 which forms at least a floppy disk insertion opening 25 and is made of plastic. 4 Lock lever 30 that engages with the pin 24
The floppy disk drive device according to claim 3, wherein the floppy disk drive device 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, a cam 30b that abuts on the floppy disk 5, and the pin 24 provided on the shaft 10 to prevent rotation of the shaft 10.
The torsion spring 2 attached to the mounting shaft 28 consists of an engaging portion 30c that engages with the lock lever 30, and upper and lower stoppers 30d and 30e that restrict the rotation of the lock lever 30.
9. The floppy disk drive device according to claim 1, wherein the shaft 10 is biased in a direction opposite to the rotating direction of the shaft 10.