JPH0210619Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a floppy disk device, and more particularly to a floppy disk device that uses a loading mechanism to load/unload a floppy disk cartridge.

[Conventional technology]

Generally, floppy disks, which are a type of magnetic disk for storing information, have recently begun to be used in word processors and the like. This floppy disk comes in two types, 8 inches and 5 inches in outer diameter.
They are each wrapped in a paper cover with a window hole and inserted into the device, and the head of the device records or reproduces information on the floppy disk through the window hole.

However, a floppy disk with an even smaller outer diameter has now been developed, but this floppy disk is housed in a cartridge (hard case) for ease of handling. Therefore, this floppy disk must be inserted into a floppy disk device along with the cartridge to perform recording and reproduction.

[The problem that the idea attempts to solve]

The reason why small-diameter floppy disks were developed as mentioned above was to make floppy disk devices more compact, and to facilitate loading/unloading of floppy disks stored in cartridges into predetermined positions within the device. It is also necessary to downsize the loading mechanism.

Further, since the floppy disk is housed in a cartridge (hard case), if the loading operation is not performed smoothly, there is a risk that the cartridge and the magnetic head will come into contact with each other, causing damage to the magnetic head.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a floppy disk device that can be miniaturized and have a smooth loading operation.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a floppy disk device configured to load/unload the floppy disk cartridge 108 using a loading mechanism 8 attached to the frame 2, which has a convex surface on the upper surface of the frame 2. A cartridge holder 14 which forms a shaped table portion 2h, has a driven cam 27 on both sides, and has a floppy disk cartridge 108 inserted therein, and a floppy disk cartridge 108 to be inserted therein. 1
Pressed part 22 that is displaced by contacting and pressing by 08
a, and a cam pin portion 22c that is displaced in accordance with the displacement of the pressed portion 22a. A pair of side members 9-1 and 9-2 to be fixed, an eject button 12, a cam hole 11a formed on both sides of a substantially U-shaped cross section and engaged with the driven cam 27, and the cam pin portion 22c. A rear end cam portion 11b that engages with the rear end cam portion 11b is provided, and as the cam lever 22 rotates, the cam pin portion 22c engages with the rear end cam portion 11b.
By energizing b, the U-shaped portion is fitted into the table portion 2h of the frame 2 and displaced forward, and with this displacement, the cam roller 27 moves into the cam hole 1.
A cam member 10 that moves the cartridge holder 14 downward by relatively displacing along the shape of the cartridge holder 1a.

[Effect]

The operation of each component of the floppy disk device configured as described above will be explained using FIG. 11.

FIG. 11A shows a state in which the loading mechanism 8 is in an unloading state, and the floppy disk cartridge 108 is inserted into the cartridge holder 14 and comes into contact with the pressed portion 22a of the cam lever 22. In this state, the cartridge holder 14 is in the upward movement position due to the driven cam portion 27 engaging with the cam hole 11a.

FIG. 11B shows a state in which the floppy disk cartridge 108 is further inserted in the direction of arrow B in the figure from the state shown in FIG. 11A. As the floppy disk cartridge 108 is displaced in the direction B, the pressed portion 22a is pressed and displaced, thereby causing the cam lever 22 to rotate. As the cam lever 22 rotates, the cam pin portion 22c engaged with the rear end cam portion 11b moves the cam member 10 in the direction of arrow A.
direction (forward). During this displacement, the U-shaped portion of the cam member 10 moves toward the table portion of the frame 2.
Since it is configured to be displaced while being fitted and guided by h, smooth and reliable displacement can be achieved. Also,
Since the cam member 10 is guided not by the side members 9-1 and 9-2 but by the frame 2 disposed inside thereof, the width dimension can be reduced.

Due to the displacement of the cam member 10, the driven cam 27
are relatively displaced along the shape of the cam hole 11a,
The cartridge holder 14 moves downward. Figure 11C
shows the state in which the floppy disk cartridge 108 has been moved down to a predetermined position.

As described above, the cartridge holder 14 is moved by the floppy disk cartridge 108 directly urging the cam lever 22 to rotate. Therefore, since the loading operation is performed using the insertion force of the floppy disk cartridge 108, there is no need to provide a separate drive mechanism, and the apparatus can be made more compact.

Moreover, since the cam lever 22 is provided not on the frame 2 but on the side members 9-1 and 9-2,
The device can be made thinner. If it were assumed that the cam lever 22 was provided on the frame 2, the cam lever 22 would get in the way and it would be impossible to move the cartridge holder 14 down to the vicinity of the frame 2, and in this case the device would become larger in the height direction. It ends up.

〔Example〕

FIG. 1 is an overall perspective view of an embodiment of a floppy disk device according to the present invention, and FIGS. 2 and 3 are exploded perspective views of the frame and surroundings of the device and the loading mechanism, respectively.

In the figure, a floppy disk device 1 is a frame 2.
has. As shown in Fig. 2, the frame 2 is molded by aluminum die-casting, and has a width of l at the front of the upper surface.
convex table part 2h, central convex part 2a (center hole 2
b and three holes 2c), a pair of convex portions 2d
(A positioning pin 3 having a small diameter portion 3a is fitted and fixed thereto), a slot 2e, four protrusions 2i, a stopper portion 2j on both sides, and a sensor 4 (on side A of the cassette, B side detection), 5
(for detecting the accidental erasure prevention state), 6 (for detecting the disk track recording or playback start position), and has screw holes 2f and 2g on the side, and a motor storage hole 2k on the rear. It has screw holes 2m on both sides, a square convex portion 2n (having a recess 2p and a screw hole 2g, and an L-shaped support portion 2r and a screw hole 2r-1 on the right side), and three L-shaped support portions 2s, 2t, 2u. (Each has screw holes 2s-1, 2t-1, 2u-1)
has. It should be noted that the inner sides of each L-shape of the support portions 2r and 2s overlap accurately in the front-rear direction (directions of arrows A and B), and the support portions 2t and 2u also overlap in the same manner. Further, a steel plate 7 is screwed into the lower surface recess 2v of the frame 2, and a portion of the steel plate 7 peeks out from the slot 2e.
In addition, the sensors 4, 5, and 6 each face three sensors (each housing a light emitting element) arranged on a substrate (not shown) fixed above the frame, and receive light from these sensors as appropriate. be.

Reference numeral 8 denotes a loading mechanism which, as shown in FIG. (with a door holder 15). The side plate 9-1 is
A pair of mounting holes 9a, a pair of vertical holes 9b, a guide slot 9c, an inner stopper protrusion 9d, a spring storage hole 9e
(having a spring hook convex portion 9f), a mounting plate portion 9g (having a screw hole 9h), and a cam lever 22 at the inner rear end (an upper end pressed portion 22a, a second lower end cam portion 22b). Cam pin part 22 as a cam part
c) is pivoted by a pin 23 and an inner guide roller 24 is pivoted. The side plate 9-2 has a symmetrical shape with the side plate 9-1, and both side plates 9-1, 9-
2 has mounting holes 9 on both sides of the front of the frame 2, respectively.
a, It is screwed by the screw 36 through the screw hole 2g.

The cam plate 11 of the push cam plate 10 has a U-shaped cross section (however, the distance between the inner sides of the U-shape is l), and a pair of dog-shaped cam holes 11a (horizontal cams) are provided on both sides of the U-shape as a pair of third cam portions. 11a-1, an inclined cam part 11a-2), a rear end cam part 11b as a fourth cam part, and a guide convex part 11.
c, has a notch recess 11d. Pushkam board 1
0, between the side plates 9-1 and 9-2, the U-shaped portion is fitted into the table portion 2h of the frame 2 in a guiding manner, and the lower surface of the cam plate 11 commonly touches the upper surface of the four protrusions 2i. be touched. At this time, each guide convex portion 11
c is fitted into the guide elongated hole 9c in a guided manner, and both rear end cam portions 11b correspond to the lower end cam pin portions 22c of the levers 22 of the side plates 9-1 and 9-2, respectively.

The cartridge holder plate 14 has a central hole 14a,
The holes 14c on both sides, the rear plate part 14d, the clamp lever plate 26 fixed thereto, the pair of engagement protrusions 14e at the front end, the spring hook protrusions 14f on both sides, the guide plate part 14g, the guide protrusions 14h, and each side It has cam rollers 27 (each supported by a pin 28) as a pair of first cam parts. The clamp lever plate 26 includes a guide plate 29, a pair of lower spring plates 30,
A resin tapered clamper 33 is supported on a pin 31 via a coil spring 32.

The door holder 15 is made of resin, as shown in FIG.
The window hole 15a has a stepped portion 15b on the rear periphery, a pair of engaging rod portions 15c (each having an engaging groove 15d), and a pair of convex portions 15e, and a metal plate is attached to the pin 34 inserted through each convex portion 15e. A manufactured door 35 and a torsion spring 41 are fitted together, and the door 35 is biased by the torsion spring 41 to abut against the stepped portion 15b and close the window hole 15a. As shown in FIG. 3, the door holder 15 is integrally attached to the cartridge holder plate 14 by elastically fitting the engagement grooves 15d of each engagement rod 15c into each engagement protrusion 14e. .

This cartridge holder plate 14 (door holder 1
5 (already assembled) is disposed on the upper surface of the push cam plate 10, and a pair of cam rollers 27 on each side are respectively placed in the horizontal cam portions 11a-1 of a pair of cam holes 11a on each side of the cam plate 11, and The guide plate portions 14g on both sides are brought into contact with the guide rollers 24 of the side plates 9-1 and 9-2, respectively. Moreover, the spring hooking protrusions 14f on both sides and the spring hooking protrusions 9 on the side plates 9-1 and 9-2
It is biased downward by a pair of coil springs 43 each stretched between f.

44 is a resin front plate with window holes 44a, 44b,
It has a pair of L-shaped mounting plate parts 44e (each having a hole 44f). The front plate 44 is connected to both side plates 9-1, 9-
2, by fitting the pair of mounting plate parts 44c into the respective mounting plate parts 9g of each side plate 9-1, 9-2, and then screwing the screw 45 through the hole 44f and the screw hole 9h. It is screwed in place.

In the loading mechanism 8, the push cam plate 10 has a U-shaped cam plate 11 that is fitted in a guiding manner to the table portion 2h of the frame 2, and a guide convex portion 11c of the cam plate 11 that extends along the guide length of the side plates 9-1 and 9-2. By being guided and restricted by the hole 9c, the cartridge holder plate 14 is slidable only in the front-rear direction (directions of arrows A and B), and the cartridge holder plate 14 is guided by the guide plate part 1.
4g are guided and regulated by the inner guide rollers 24 of the side plates 9-1 and 9-2, respectively, and the pins 28 are guided and regulated by the vertical holes 9b, respectively, so that they are slidable only in the vertical direction (in the direction of arrows C and D). . However, in normal times, as shown in FIG. 1, the push cam plate 10 is in the so-called eject position where it is pushed and slid to the rearward limit (in the direction of arrow B), so that the cartridge holder plate 14 is pushed against the cam roller 27.
is the horizontal cam portion 11a of the cam hole 11a of the cam plate 11.
-1, and is at the eject position where it is slid to the upper limit (in the direction of arrow C) against the coil spring 43. Also, the cam pin portion 22c of the cam portion 22b of the cam lever 22 is connected to the cam plate 11.
The cam portion 22b is pushed rearward by the rear end cam portion 11b and is at the rotation limit position in the direction of arrow H (shown in FIG. 1) where the cam portion 22b abuts against the stopper portion 2j of the frame.

Also, according to this loading mechanism 8, in FIG. 1, its side plates 9-1, 9-2, cam lever 22,
The interlocking mechanism parts such as the cam plate 11 and the cam roller 27 of the cartridge holder plate 14 are connected to the loading mechanism 8.
Of the overall width (L) of the floppy disk cartridge 108 (its width is L, where l<L), which is inserted as described later, is relatively small on both sides (width dimension ( L-l)/2)
The interlocking mechanism portion of the loading mechanism 8 is made smaller, and the entire device 1 is also made smaller.

Reference numeral 45 denotes a carriage formed by aluminum die-casting, and as shown in FIG. It has a light shielding projecting plate part 45f, and the front end projecting part 45
A lead wire 47 of the magnetic head 46 housed in the magnetic head 46 is led out from the hole 45h through a lower recess (not shown). The magnetic head 46 is composed of a recording/reproducing head and an erasing head arranged side by side.

Reference numeral 48 denotes a resin pad support arm, which includes an arm body portion 48a bent into a dogleg shape, and a guide pin portion 48.
b. It has a pad 49 implanted on the lower surface of its tip, and a pair of projecting plate parts 48c, each projecting plate part 48c is fitted on the outside of each projecting plate part 45c with respect to the carriage 45, and is pivotally supported by a pin 50, and also has a torsion spring. 51 urges the pad 49 in the downward direction, and the pad 49 lightly presses the floppy disk 110 against the head 46, as will be described later. The structure of the head 46 and the arm 48 is not limited to the above structure, and conversely, a pad may be provided on the carriage 45 and a head may be provided on the arm 48.

52 and 53 are long and short guide bars, respectively.
The guide bar 52 is connected to the support portions 2r and 2s of the frame 2.
As shown in FIG. 4, screw holes 2r-1,
2s-1 is pressed by the tapered portion 56a of the countersunk screw 56, and the L of each support portion 2r, 2s is pressed.
It is pressed against both the horizontal and vertical surfaces of the corners of the character, and is positioned and fixed so as to accurately match the directions of arrows A and B. The guide bar 53 is similarly installed between the support portions 2t and 2u, and is fixed by countersunk screws 56 in alignment with the directions of arrows A and B. The carriage 45 is mounted so that the pair of guide holes 45a are fitted into the guide bars 52, and the guide recesses 45b are fitted into the guide bars 53, so that the carriage 45 can be accurately slid in the directions of arrows A and B. At this time, the protrusion 45
g is guided in sliding contact with the steel plate 7 in the slot 2e,
In addition, the pad support arm 48 has a guide pin portion 48b.
The clamp arm 26 comes into contact with the guide plate 29 of the clamp arm 26 and is stopped at a position separated from the head 46.

54 is a stepping motor, and as shown in FIG. 2, a yoke 57 with a coil (not shown) wound thereon is interposed between a metal front bracket 55 and a rear bracket 56, respectively, and a yoke 57 is inserted between the metal brackets 55 and 56. A motor output shaft 61 is supported on the shaft, and both brackets 55 and 56 are further tightened and fixed with four screws 58. The front bracket 55 has mounting plate portions 55a (having a mounting hole 55b) integrally formed on the left and right outer sides thereof, and is connected to a ring 62 press-fitted to the output shaft 61 via a thin spring plate-shaped guide belt 63. The belt presser 64 is screwed with a screw 65. As shown in the circle in FIG. 2, the guide belt 63 has a left head portion 63a (having a hole 63b), a strip portion 63c, and a right slit 63d (having a central hole 63e and a hole 63f on both sides). with central hole 6
3e is inserted through the screw 65 and fixed to the output shaft 61, and then wound in a crosswise manner around the outer circumference of the ring 62, and the head 63a and the striped portion 63c are connected to the slit 63d.
inserted into.

The stepping motor 54 is fitted and stored in the storage hole 2k of the frame 2, and each mounting plate portion 55a is positioned by abutting on the upper surface of the frame 2, respectively.
It is fixed by a screw 66 through the mounting hole 55b and the screw hole 2m. Thereafter, the guide belt 63 is brought into contact with the front and rear step portions 45d of the carriage 45 in a state where both ends wound in the above-mentioned crosswise manner are tensioned by being pulled in the directions of arrows A and B, respectively, and the holes 63b,
Front screw hole 45e, hole 63f, rear screw hole 45e
They are fixed by screws 67 through the respective holes. As a result, when the output shaft 61 rotates stepwise in the direction of arrow E or F, the strip portion 63c moves relatively within the slit 63d, and the carriage 45 reciprocates in the direction of arrows A and B in a stepwise manner. Furthermore, the motor 54
Since the mounting plate portion 55a is integrally formed on the front side bracket 55, there is no need to use a mounting frame or the like to mount the motor 54 on the frame 2, which simplifies the configuration and improves mounting accuracy. Furthermore, when the motor 54 is assembled, the axis of the output shaft 61 is precisely perpendicular to the sliding direction of the carriage 45, thereby improving operational accuracy. Further, the starting position of the carriage 45 can be easily set by moving and adjusting the motor 54 and the carriage 45 together in the directions of arrows A and B by the allowance of the mounting hole 55b of the motor 54.

According to the mounting structure of the guide belt 63, the carriage 45, and the guide bars 52, 53, the guide belt 63 is attached to the carriage 45, the guide bars 52,
Since the carriage 45 is installed extending in a direction parallel to the guide bars 52 and 53 at an approximately intermediate position between the guide bars 52 and 53, the carriage 45 is moved in the sliding direction approximately at an approximately intermediate position between the guide bars 52 and 53 on both sides of the guide bars 52 and 53. Since the matching sliding force is applied, it is possible to slide smoothly without receiving any torsional force in the horizontal plane and causing play. Furthermore, since the drive point of the guide belt 63 (the intersection of the belts 63) is approximately aligned with the axis height of the guide bars 52 and 53 when viewed in the height direction, the carriage 45 is not subjected to rotational force in the vertical plane and is free from play. It is possible to slide more smoothly without causing any problems.

68 is a switch unit that detects the start position (rear slide limit) of the carriage 45, and the resin switch case 69 is connected to its pair of sensors 70,
71 (accommodating a light emitting element and a light receiving element, respectively) are inserted into a pair of square holes 72a of a metal support plate 72, stacked, and fixed with screws 73. In the switch unit 68, the projecting plate part 72b of the support plate 72 is fitted into the concave part 2p of the convex part 2n of the frame 2, and is fixed by the screw 74 through the notch part 72c and the screw hole 2q. In the gap between the pair of sensors 70 and 71 is the carriage 45 that has reached its sliding limit in the direction of arrow B.
The projecting plate portion 45f is inserted, the light passing between the sensors 70 and 71 is blocked, the slide limit (starting position of the carriage 45) is detected, and the rotation of the stepping motor 54 in the direction of arrow F is stopped.

Reference numeral 81 is a board unit, as shown in Figs. 6, 7, and 9.
As shown in the figure, wiring prints are placed on the top surface of the board 82, and circuit elements such as IC chips are arranged on the bottom surface, and the right half of the board 82 in FIG. Moreover, the left half of the board 82 is used as a circuit for driving the stepping motor 54.

As shown in Fig. 8, the motor 83 has an aluminum rotor hub 84, a shield plate 96 (three holes 96a)
), a fixed ring 85, a magnetic material yoke 86, six coils 87, and three Hall elements 88.
the stator 89 side, the shaft 90, the disk table 91, the rotor holder 92, and the rotor 9.
3. A rotor 95 side consisting of a magnet 94 is arranged via a ball bearing 101. The rotor hub 84 of the stator 89 has a hole 84a and a flange 84b (having three screw holes 84c), and a ball bearing 101 is fitted into the hole 84a, and a yoke 86 is press-fitted into the lower surface of the flange 84b. , the lower end of the hub is fitted into the hole 82a of the board 82, and a fixing ring 85 is attached to the downward protrusion.
are fitted and caulked to be fixed, and a shield plate 96 is fitted onto the upper surface of the flange portion 84b. coil 8
As shown in FIG. 7, the wires 7 are each wound into a flat triangular loop shape, and the leads thereof are connected to wiring prints and fixed by adhesive at appropriate six equal positions in the circumferential direction on the upper surface of the substrate 82. As shown in FIGS. 7 and 8, the Hall element 88 is a substrate 8 formed at the center of the three coils 87.
2, and its leads are connected to appropriate wiring prints. Shaft 90 of rotor 95
is fitted into the ball bearing 101, a brass disk table 91 (having a pin portion 91a) is press-fitted into the upper protrusion, a rotor holder 92 is press-fitted into the lower protrusion, and a magnet 94 (with a circumference) is fitted into the rotor holder 92. The rotor 93 is fitted and secured by crimping. A square waveform print (not shown) for frequency power generation is arranged in the circumferential direction at a position facing the magnet 94 on the lower surface of the substrate 82. According to the configuration of the motor 83, the Hall element 88 is embedded in the hole 82b of the substrate 82.
Since the thickness is within the height of the coil 87, the height of the motor and The overall height of the device 1 can be reduced.

In FIG. 9, 102, 103, and 104 are IC chips of the motor 83 drive circuit, respectively, and the chip 102
Chips 103 and 104 are for motor drive circuits, and chips 103 and 104 are for motor speed control circuits, respectively. Chip 102
Because they generate heat during use, they are designed to dissipate heat. That is, in FIG. 10, a chip 102 is integrally formed with a pair of metal support plates 102a (each having a hole 102b) in advance. Reference numeral 105 denotes an aluminum heat sink, which has a recess 105a and a pair of holes 105b.The recess 105a is placed on the upper surface of the support plate 102a so that the chip 102 is loosely fitted, and the holes 105b, 1
A nut 107 is screwed onto the screw 106 via 02b and fixed. Therefore, the heat generated from the chip 102 is transmitted to the heat radiating plate 105 and is quickly radiated from the chip 102, thereby preventing the chip 102 from being overheated.

The board unit 81 is housed in a recess 2v on the lower surface of the frame 2, and as shown in FIG. 8, the upper part of the rotor hub 84 is fitted into the center hole 2b so that the upper ends of the disk table 91 and the hub 84 protrude above the frame 2, and as shown in FIG. 2c, hole 96a, and three countersunk screws 116 through screw hole 84c.

The method for driving the motor 83 is as follows: First, when three Hall elements 88 are energized, a predetermined Hall element 8
8 is passed through the magnetic flux previously formed between the magnet 94 and the yoke 86, thereby generating a signal in a predetermined direction. This is sent to a drive circuit such as the IC chip 102 on the bottom surface of the board 82, and the drive circuit energizes a predetermined coil 87.
Magnetic flux is generated at magnet 7, and this magnetic flux
4, the rotor 95 rotates by a predetermined angle, and in the same manner, predetermined Hall elements 88 sequentially issue signals, predetermined coils 87 are sequentially energized, and the rotor 95 rotates continuously at a constant speed. . Furthermore, at this time, the magnetic flux of the magnet 94 crosses in the circumferential direction the square waveform print for frequency power generation on the lower surface of the substrate 82, and a waveform signal having a frequency corresponding to the rotational speed of the rotor 95 is generated in the print. The number of waveforms is the same on the board 82.
The rotational speed of the rotor 95 is counted by a speed control circuit such as IC chips 103 and 104 on the bottom surface, and the rotational speed of the rotor 95 is detected, and when the rotational speed deviates from the normal state or when it is desired to change the rotational speed, a signal is sent from the speed control circuit. Accordingly, the energization switching timing of the coil 87 is varied and the rotational speed is controlled.

108 is a floppy disk cartridge,
As shown in Figures 1 and 3, the cartridge chassis 1
A 3-inch floppy disk 110 and a shutter 111 are housed inside the disk. Chassis 10
9 is the center hole 109a, and the long hole 1 for reading the head.
09b, track reading start position detection hole 109
c, a pair of positioning holes 109d, a pair of holes 109e for detecting the state of preventing accidental erasure, a notch 109f for detecting the cartridge surface, and grooves 109g on both sides, and a disk 11 in the center hole 109a as shown in FIG.
0 hub 110a (center hole 110b, notch hole 11
0c) is looked into. The shutter 111 is made of a metal plate, has a predetermined shape that follows the upper and lower surfaces of the disk 110, and is rotatable concentrically with the disk 110 and is biased counterclockwise by a spring means (not shown). It is stopped at the position shown in the figure, and the elongated hole 109b and hole 109c are closed by its predetermined portion. Further, 112 is a flexible belt, which is attached to the shutter 1.
11, the left end of the belt is fixed to the shutter 111, and the engagement protrusion 112a on the right end of the belt is connected to the right side groove 109g by the arrow A,
They are fitted so that they can slide freely in the B direction. Further, the pair of holes 109e can be opened and closed by manually switching and sliding a pair of shutters 113 arranged corresponding to the holes 109e, and the holes 109e are closed to block light from reaching the sensor 5 from the sensor on the upper substrate. When this happens, the erasing head of head 46 is rendered inoperable to prevent the information on disk 110 from being erroneously erased.

Next, the operation of the device 1 will be explained. The floppy disk cartridge 108 is inserted into the door holder 15 through the window hole 44a of the front plate 44 as shown in FIG.
The door 35 is inserted into the window hole 15a of the cartridge holder plate 14, and as it is further pushed in the direction of the arrow B, the door 35 is pushed open against the spring 41 and enters the upper surface of the cartridge holder plate 14. At this time, the grooves 10 on both sides of the cartridge 108
9g are guidedly fitted into both inner guide protrusions 14h of the cartridge holder plate 14, thereby preventing the cartridge 108 from floating when pushed in. First, the clamper 33 rides on the upper surface of the cartridge chassis 109 against the coil spring 32. At this time, the upper surface of the cartridge chassis 109 is pressed downward by the pair of spring plates 30 of the clamper lever plate 26, further preventing the cartridge 108 from floating up. As the cartridge chassis 109 is pushed further against the spring means for biasing the shutter 111, which will be described later, both rear end sides of the chassis 109 are pushed into the respective cam levers 2 of the side plates 9-1 and 9-2.
The cam levers 22 are rotated in the direction of arrow G until the cam portion 22b comes into contact with the stopper convex portion 9d.

Then, the cam pin portion 22c of each cam lever 22 touches the rear end cam portion 1 of the cam plate 11 of the push cam plate 10.
1b in the forward direction (in the direction of arrow A). Therefore, the push cam plate 10 begins to slide in the direction of arrow A, and the cam rollers 27 on both sides of the cartridge holder plate 14 are relatively guided backward along the horizontal cam portions 11a-1 of the cam holes 11a. do.

At the time when the rear end of the cartridge chassis 109 comes into contact with the rear side plate part 14d of the cartridge holder plate 14 and the cartridge 108 stops sliding in the direction of arrow B, each of the cam rollers 27 is moved to each inclined cam part 11a of the cam hole 11a. The transition to -2 has already been completed. Therefore, each cam roller 27 presses the inclined cam portion 11a-2 downward by the coil spring 43, and applies a sliding force in the forward direction (in the direction of arrow A) to the push cam plate 10 due to the slope effect.

Therefore, the push cam plate 10 is further slid forward by the above-mentioned force, and as a result, the cartridge holder plate 14 (cartridge 108) is moved by its respective guide plate portions 14g and the inner cam rollers of the side plates 9-1 and 9-2. 24 guide downwards (arrow D
direction). When each cam roller 27 relatively moves downward along the inclined cam portion 11a-2 and comes into contact with the lower end thereof, the forward slide of the push cam plate 10 and the downward slide of the cartridge holder plate 14 are respectively stopped. be done. As a result, the eject button 12 of the push cam board 10
is projected forward from the window hole 44b of the front plate 44 to the position shown by the two-dot chain line in FIG.

At the same time, the pair of positioning holes 109d of the cartridge 108 are respectively fitted into the small diameter portions 3a of the pair of positioning pins 3 of the frame 2, and the center hole 110b of the floppy disk 110 is fitted with the shaft 9.
0 protrusion, the hub 110a is placed on the upper surface of the disk table 91, and the hub 110a is fitted into the notch hole 110.
c is disk 1 due to the function of the surrounding guide section.
By adjusting rotation of the floppy disk 10 itself, the floppy disk 110 is fitted into the pin portion 91a, and the floppy disk 110 is set to rotate concentrically and integrally with the rotor 95 of the motor 83, and loading of the cartridge 108 to a predetermined position is completed.

Note that even when the cartridge 108 is pushed to its sliding limit in the direction of arrow B during the above operation, the front end of the cartridge 108 is still in the window hole 15 of the door holder 15.
a and the window hole 44a of the front plate 44, and further protrudes slightly forward. Therefore, cartridge 1
08 is moved further downward in this state, but the height of the window hole 44a of the front plate 44 is set in advance to accommodate the cartridge 1.
Since the height is set to be greater than the total height of the thickness of the cartridge 08 and the downward movement distance of the cartridge 108, there is no possibility of abutting interference with each other. Regarding the window hole 15a,
Since the door holder 15 is fixed to the cartridge holder plate 14, the window hole 15a is
Moves downward (or upward) together with 08. Therefore, if the door holder 15 is temporarily fixed to the frame 2 and the window hole 1
Assuming that 5a is stationary, cartridge 10
Compared to the window hole 15a in which there is a gap between the top and bottom of the window hole 15a when the window 8 moves up and down, which may allow dust to enter, the window hole 15a of the present application does not create a gap, so there is no risk of dust entering, improving performance and reliability. It can improve sex.

Next, load the cartridge 1 during loading.
To explain the operation of the cartridge 08 itself, first, the rear end of the cartridge 108 is roughly connected to the cartridge holder plate 1.
When the guide plate 14g of the cartridge holder plate 14 reaches the position lined up with the guide plate 14g, the guide protrusion 14 of the cartridge holder plate 14
h contacts the engagement protrusion 112a of the belt 112 and slides the engagement protrusion 112a relative to the cartridge 108 in the direction of arrow A. Therefore,
The shutter 111 is pulled by the belt 112 and starts rotating clockwise against the spring means.
09b, and the holes 109c are unblocked, and each elongated hole 1 is opened.
09b, floppy disk 11 from hole 109c
0 is peeked out. Also, at the rear sliding limit of the cartridge 108, the cartridge chassis 109
The clamper 33 that was on top of the coil spring 3
2, the hub 110a is pushed downward into the center hole 109a, and the floppy disk 110 is clamped between it and the disk table 91. Furthermore, when the cartridge holder plate 14 moves downward, the guide plate 29 of the clamp lever plate 26 also moves downward integrally.
The pad support arm 48 has its guide pin portion 48b.
is guided and slid relatively forward on the upper surface of the guide plate 29 and rotated downward, and the clamper 33 moves into the elongated hole 109.
Connect the floppy disk 110 to the head 4 via b.
6, press lightly. Also, when loading the cartridge 108, the sensors 4, 5, and 6 are connected to the notch 109f of the cartridge 108 and the left hole 109, respectively.
e and hole 109c, respectively. Therefore, first, the light from the sensor on the upper substrate passes through the notch 109f and reaches the sensor 4, thereby confirming that the A side of the floppy disk 110 is facing the head 46. Since the light from the sensor is blocked by the shutter 113 of the left hole 109e, an erroneous erasing prevention state is established in which the erasing head of the head 46 cannot operate.

Next, when the A side selection switch (not shown) of the A side and B side selection switch (not shown) of the disk 110 on the panel (not shown) further arranged on the upper board is pressed, the A side is confirmed by the sensor 4. A match is found, and side A becomes readable.

Next, when the playback switch (not shown) on the panel is pressed, the motor 83 is driven as described above, and the floppy disk 110 is rotated clockwise together with the rotor 95. When another detection hole (not shown) reaches the hole 109c, light from yet another sensor on the upper substrate passes through the detection hole and reaches the sensor 6. As a result, it is detected that the reading start position of each track on the floppy disk 110 coincides with the center line of the elongated hole 109b, and for example, the reading start position of the outermost track corresponds to the reproduction head of the head 46. Continued floppy disk 110
is rotated, and the information on the outermost track is sequentially read and reproduced by the reproduction head of the head 46. When the floppy disk 110 rotates once and the detection hole reaches the hole 109c again, the motor 83 is stopped and the rotation of the disk 110 is also stopped, completing the reading for one revolution.

Next, the stepping motor 54 moves to arrow E.
It is rotated by a predetermined angle stepwise in the direction,
The carriage 45 slides stepwise in the direction of arrow A by a predetermined distance via the belt 63, and the head 4
6 corresponds to the track one track inside from the outermost circumference of the floppy disk 110. Then, the floppy disk 110 rotates once in the same manner and the information is read. Thereafter, in the same manner, the stepping motor 54 and the motor 83 are alternately driven to sequentially read information on a plurality of tracks.

When the reading of the predetermined track is completed and the motor 83 is stopped, pressing a stop push button switch (not shown) causes the stepping motor 54 to rotate continuously in the direction of arrow F. Then, the carriage 45 slides back in the direction of arrow B to the starting position where the projecting plate 45f blocks the light passing between the sensors 70 and 71, and the stepping motor 54 is stopped by the detection by the sensors 70 and 71.

Next, the ejection operation of the cartridge 108 will be explained. When the eject button 12 is pushed in the direction of arrow B, the cam plate 11 of the push cam plate 10 is slid integrally in the same direction. Therefore, the cam rollers 27 on both sides of the cartridge holder plate 14 are pushed and guided by the respective inclined cam portions 11a-2 of the cam hole 11a, and are moved upward together with the cartridge 108 against the coil spring 43.
7, the upward movement is stopped when each moves to the horizontal cam portion 11a-1. Along with this upward movement, the center hole 110b and notch 110c of the floppy disk 110
are separated from the shaft 90 and the pin portion 91a, respectively, and are inserted into a pair of positioning holes 109 of the cartridge 108.
d is detached from the positioning pin 3 and the positioning lock is released, and the pad support arm 48 also has the guide pin portion 48b attached to the guide plate 2 of the clamper lever plate 26.
9, the pad 49 is pressed upward and rotated upward again, and the pad 49 is removed from the elongated hole 109b. At this time, the cartridge 108 is biased and slid in the direction of arrow A by the spring return force of the spring means of the shutter 111 that presses the guide protrusion 14h of the cartridge holder plate 14, so that the engagement protrusion 112a of the belt 112 is pushed against the guide protrusion 14h of the cartridge holder plate 14. A slight length of the front end of the front plate 44 projects forward from the window hole 44a of the front plate 44. As a result, in the cartridge 108 itself, as the engagement protrusion 112a of the belt 112 is slid back in the direction of arrow B along the groove 109g, the shutter 111 is rotated counterclockwise and returned to its predetermined position. The elongated hole 109b and the hole 109c are shielded to protect the floppy disk 110.

At this time, the push cam plate 10 is pushed to the sliding limit in the direction of arrow B, and the cam pin portions 22c of the cam portions 22b of the cam levers 22 of the side plates 9-1 and 9-2 are pressed by the respective rear end cam portions 11b of the cam plate 11. The cam portion 22b is then rotated back in the direction of the arrow H in FIG. 3, and the cam portion 22b is brought back into contact with the stopper portion 2j. The spring plate 30 of the clamp lever plate 26 also returns to its displacement, and the clamper 33 rides on the upper surface of the cartridge chassis 109 again.

Therefore, in the end, the operator only has to grasp the front protruding part of the cartridge 108 and pull it out in the forward direction to remove the cartridge 108 through the door holder 15 and the window holes 15a, 44a of the front plate 44 in sequence, and then the clamper 33 is displaced downward and returns to door 3.
5 also rotates back to close the window hole 15a.

Next, if you want to read side B of the floppy disk 110, turn the cartridge 108 over and
In the same manner as in the above case, the cartridge 108 is pushed onto the upper surface of the cartridge holder plate 14 via the front plate 44 and the door holder 15, and is further moved down to perform loading. In this case, the difference from the above A-side reading is that the engagement protrusion 112a of the belt 112 engages with the left guide protrusion 14h of the cartridge holder plate 14, and that the sensor 4 corresponds to the notch 109f. The point is that the light from the sensor on the upper substrate does not reach the sensor 4, and the reading of the B side is confirmed.

[Effect of idea]

As described above, the present invention has features such as being able to reduce the size of the device and realizing a smooth loading operation.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of an embodiment of a floppy disk device according to the present invention, FIGS. 2 and 3 are exploded perspective views of the frame and loading mechanism of the device, and FIG. 4 is a perspective view of the carriage of the device. 5 is an exploded perspective view of the door holder of the above device, FIG. 6 is a perspective view of the board unit of the above device, and FIG. 7 is a coil of the floppy disk drive motor of the board unit. FIG. 8 is a longitudinal cross-sectional view of the motor portion, FIGS. 9 and 10 are a downward perspective view of the device and an exploded perspective view of its essential parts, and FIG. FIG. 3 is a diagram for explaining the function of each component of such a floppy disk device. DESCRIPTION OF SYMBOLS 1... Floppy disk device, 2... Frame, 2h... Table part, 4-6, 70, 71...
...Sensor, 8...Loading mechanism, 9-1, 9
-2...Side plate, 10...Pushy cam board, 11...
...Cam plate, 11a...Cam hole, 11a-1...Horizontal cam part, 11a-2...Slanted cam part, 11b...
... Rear end cam part, 12 ... Eject button, 14 ...
Cartridge holder plate, 15...Door holder, 2
2...Cam lever, 22a...Pressed part, 22c
...Cam pin part, 24, 27...Cam roller, 3
3... Clamper, 44... Front plate, 45... Carriage, 46... Magnetic head, 48... Pad support arm, 52, 53... Guide bar, 54... Stepping motor, 63... Guide belt, 81...
... Substrate unit, 83 ... Motor, 87 ... Coil, 88 ... Hall element, 89 ... Stator, 91
...Disk table, 94...Magnet, 9
5...Rotor, 102, 103, 104...IC
Chip, 105... Heat sink, 108... Floppy disk cartridge, 110... Floppy disk, 111, 113... Shutter.

Claims (1)

[Claims for Utility Model Registration] Loading mechanism 8 attached to frame 2
In a floppy disk device configured to load/unload a floppy disk cartridge 108, a convex table portion 2h is formed on the upper surface of the frame 2, and the loading mechanism 8 is provided with a driven cam 27 on both sides. a cartridge holder 14 into which a floppy disk cartridge 108 is inserted; and a pressed portion 2 which is displaced by contact with and being pressed by the inserted floppy disk cartridge 108.
2a and a cam pin portion 22c that is displaced in accordance with the displacement of the pressed portion 22a. A pair of side members 9-1 and 9-2 to be fixed, an eject button 12, and a cam hole 1 formed on both sides of a substantially U-shaped cross section and engaged with the driven cam 27.
1a, and a rear end cam portion 11b that engages with the cam pin portion 22c, and as the cam lever 22 rotates, the cam pin portion 22c engages with the rear end cam portion 1.
1b, the U-shaped portion is fitted and guided by the table portion 2h of the frame 2 and displaced forward, and with this displacement, the cam roller 27 is moved relative to the shape of the cam hole 11a. A floppy disk device comprising: a cam member 10 that moves the cartridge holder 14 downward by being displaced;