JPS6325420B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flexible disk device, in which first and second sliding members are slidably displaced by insertion of a flexible disk, and a collet is moved in accordance with the sliding of the second sliding member. The purpose of the present invention is to provide a flexible disk device with good operability that can automatically clamp the disk simply by inserting the disk by displacing the attached clamp member and clamping the disk by the collet and spindle hub. .

Previously, JP-A-57-18055, JP-A-57-
As described in No. 20959, etc., a flexible disk cartridge (hereinafter referred to as a "disk") is a container containing a flexible magnetic disk (media).
There is a flexible disk device that records and reproduces information signals by rotating a medium inside a container and bringing a magnetic head into contact with the rotating medium.

In a conventional flexible disk device, the disk is inserted into the device through the opening window, and then the cover (or handle) of the opening window is closed to fit the collet into the spindle hub, and the media is clamped by the collet and spindle hub. In use condition. In addition, by opening the lid (or handle), the collet is separated from the spindle hub to release the clamp, and then the disk is pulled out by hand. As described above, conventional flexible disk devices have had the disadvantage of poor operability since they require double-action operations to load and eject disks. Furthermore, if the lid (or handle) is closed without inserting the disk to a predetermined position, the media is clamped eccentrically, resulting in damage to the media.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

FIG. 1 is an overall perspective view of an embodiment of the device of the present invention;
FIG. 2 shows a perspective view of the main mechanical parts of the device.

In FIG. 1, reference numeral 1 denotes an opening window, through which a flexible disk (not shown) containing a flexible magnetic disk (media) in a container is inserted into and ejected from the apparatus. Reference numeral 2 denotes an eject button, and by pushing this button, the disk is ejected. Further, 3 is an access indicator lamp, and 4 is a ready indicator lamp. The access indicator lamp 3 lights up when writing to or reading from the media, and the ready indicator lamp 4 lights up when the disk is correctly clamped and the media is not loaded. This lights up when the spindle motor that rotates the light is operating at its rated speed.

In FIG. 2, 10 is a spindle hub, which is fixed to a rotating shaft 11 of a spindle motor and driven to rotate. Reference numeral 12 denotes a collet, which is rotatably attached to a collet shaft 13.
The collet shaft 13 has a flange 13a on the outer periphery attached to a notch 14a of the shift lever 14, which is a clamping member.
A guide pin 15, which is fitted and fixed to a frame (not shown) and is fixed to a frame (not shown), is loosely inserted into the center of the guide pin 15. The shift lever 14 has a tapered portion 14b, which is a third cam, at the left end in the figure, is swingably supported by a rotation shaft 16 fixed to the frame, and is provided on the rotation shaft 16. A torsion coil spring (not shown) urges the notch 14a in a direction away from the spindle hub 10 (in the direction of arrow A). This shift lever 14 has a notch 14
When a is rotated in the direction of arrow B, the collet 12 is fitted into the spindle hub 10 and rotates together with the spindle hub 10.

Reference numeral 17 denotes a solenoid plunger as a driving means, which sucks and drives the plunger 17a in the direction of arrow C when energized. A solenoid lever 18, which is a first sliding member, is fixed to the tip of the plunger 17a. This solenoid lever 18 is slidable in the directions of arrows C and D, and is connected to the plunger 17a.
It is moved in the direction of arrow D by a coil spring 19 normally fixed to the frame. The solenoid lever 18 has a first abutment part 18a at the right end in the figure, a pushing projection 18b which is a first cam at the center, a stopper plate 18c at the left end, and a stopper plate 18c at the left end. Bearing part 18d, 1
8e. A shaft 21 to which a stop lever 20 as a regulating member is fixed is rotatably supported by the bearings 18d and 18e, and the stop lever 20 is biased by a torsion coil spring 22 to rotate in the direction of arrow E, and the shaft 21 is rotated in the direction of arrow E. 32.

The clamp slider 23, which is the second sliding member, is slidable in the directions of arrows C and D, and is normally at a position moved in the direction of arrow D by a coil spring 24 fixed to the frame. The clamp slider 23 has a second abutment part 23a and support parts 23b, 23c at the right end in the figure, and a lock pin 25 (first locking part) that protrudes downward is fixed to the left end. A roller 26, which is a second cam, is supported by the support portions 23b and 23c.

A lock lever 27, which is a locking member, is rotatably supported by a pin 28, and is biased in the direction of arrow F by a torsion coil spring 33, so that an end 27a of the lock lever 27 abuts against the pin 29. This lock lever 27 is the clamp slider 2
When the lock lever 27 is moved in the direction of the arrow C, the hook portion 2 is positioned so as to overlap the lower side of the clamp slider 23.
7b.

The eject slider 30 is slidable in the directions of the arrows C and D, and is normally at a position moved in the direction of the arrow D by a coil spring 31 fixed to the frame. The eject slider 30 has a side wall 30a extending in its longitudinal direction. This side wall 30
A functions as a cam for the shaft 32, and is composed of a protrusion side wall 30a ₁ and a recess side wall 30a ₂ , and the recess side wall 30a ₂ has a notch 30b. Also,
The eject slider 30 has a stopper pawl 30c and a disk receiving portion 30d at the left end in the figure.

The head shift lever 34 has a substantially U-shape, and has a through hole 34b at the left end of the side 34a in the figure.
4c has a shift up pawl 34d. The head shift lever 34 is a shaft 3 fixed to the frame.
5, and is biased in the direction of arrow G by a torsion coil spring 36 provided on the shaft 35 to bring the side 34c into contact with the side wall 30a of the eject slider 30. The head arm 3 has a magnetic head 37 attached to the upper part of the side 34a.
No. 8 protrusions 38a are in contact with each other. Further, a disk sensor 39 serving as a detection means is fixed to the frame and detects the through hole 34b.

The eject lever 40, which is a lock release member, has a shift down plate 40a extending to the left in the figure, a shift up plate 40b extending to the right, and a protrusion 40c, which is a fourth cam. It is fixed to the end of the shaft 32, which is a part of the shaft 32. Shaft 3
2 consists of a large diameter portion 32a and a small diameter portion 32b, and the stepped portion at the boundary between the large diameter portion 32a and the small diameter portion 32b is a third locking portion. This shaft 32 is movable and rotatable in the directions of arrows H and I, and has a torsion coil spring 4 provided at its large diameter portion 32a and fixed at one end to a support member 41.
2 in the direction of arrow H, and the eject lever 40 is urged in the direction of arrow L by a torsion coil spring 42.

When a disk is inserted through the opening window 1 shown in FIG. 1, the disk is inserted in the direction of arrow C in the plane between the spindle hub 10 and the collet 12 in FIG. In FIG. 2, the collet 12 to the support member 41 are all arranged above the plane formed by the spindle hub 10. The front edge of the disk shown by the two-dot chain line in FIG. 2 comes into contact with the disk receiving portion 30d, and the eject slider 30 is pushed by the disk and slides in the direction of arrow C. As the eject slider 30 slides, the side 34c of the head shift lever 34 engages with the notch 30b of the side wall 30a, the head shift lever 34 rotates in the direction of arrow G, and the head arm 38 moves in the direction of arrow B. Further, the through hole 34b moves to a position on the optical axis of the disk sensor 39, and the disk sensor 39 generates a detection signal.

The solenoid plunger 17 is energized for a predetermined period of time from when the disk sensor 39 starts generating the detection signal, and the plunger 17a is attracted. This causes the solenoid lever 18 to slide in the direction of arrow C. At this time, the tip of the small diameter portion 32b of the shaft 32 is facing the recess side wall _30a2 , but the stop lever 20 is located between the small diameter portion 32b and the large diameter portion 32 of the shaft 32.
Since the small diameter portion 32b is engaged with the stepped portion a, the tip of the small diameter portion 32b is spaced apart from the recess side wall _30a2 . By sliding the solenoid lever 18, the stop lever 20
slides on the shaft 32 in the direction of arrow C and separates from the stepped portion between the small diameter portion 32b and the large diameter portion 32a, and the shaft 32 moves in the direction of arrow H and touches the side edge of the push protrusion 18b of the solenoid lever 18. 18b ₁ is the protrusion 40
c from the direction of arrow I. At this time, the tip of the small diameter portion 32b of the shaft 32 faces the recess side wall 30a ₂ with a slight distance therebetween.

Further, the abutting portion 18a of the solenoid lever 18 abuts the abutting portion 23a of the clamp slider 23,
By pushing this, the clamp slider 23 slides in the direction of arrow C. Therefore, the roller 26 collides with the tapered portion 14b of the shift lever 14, the shift lever 14 rotates in the direction of arrow J, and the collet 12 moves in the direction of arrow B and engages with the spindle hub 10, moving away from the center of the disk. Clamp the media that peeks out. Further, as the clamp slider 23 slides, the lock pin 25 pushes the tapered portion 27c at the tip of the hook portion 27b of the lock lever, thereby locking the lock lever 27.
is rotated, and this lock pin 25 engages with the hook portion 27b.

After a predetermined period of time, when the energization to the solenoid plunger 17 is stopped, the solenoid lever 18 is activated by the coil spring 1.
9 to slide in the direction of arrow D. Therefore, the side edge 18b ₁ of the pushing projection 18b is separated from the projection 40c, the shaft 32 moves in the direction of arrow H, and the tip of the small diameter portion 32b comes into contact with the recess side wall 30a ₂ . At this time, the stop lever 20 slides up onto the large diameter portion 32a of the shaft 32 due to the tapered portion 20b at the tip of the stop lever 20. Further, the clamp slider 23 is locked to the lock lever 27, so that the media is continued to be clamped by the collet 12 and the spindle hub 10, and the flexible disk device becomes ready for use.

Next, when the eject button 2 shown in the first figure is pressed to finish the use, the solenoid plunger 1
7 is energized for a predetermined period of time, and the plunger 17a is attracted. This allows the solenoid lever 18
slides in the direction of arrow C, the abutting portion 18a abuts the abutting portion 23a of the clamp slider 23, and the stopper plate 18c abuts the stopper claw 30c of the eject slider 30. At this time, since the tip of the shaft 32 is in contact with the recess side wall 30a ₂ , the side edge 18b ₂ of the protrusion 18b collides with the side edge 40c ₁ of the protrusion 40c of the eject lever 40 in accordance with the sliding movement of the solenoid lever 18. . This causes the eject lever 40 to rotate in the direction of arrow K. By rotating the eject lever 40, the shift down plate 40a
Push the lock lever 27 in the direction of arrow B to lock the hook part 2.
7b and the lock pin 25 are disengaged. At the same time, the shift up plate 40b pushes the shift up pawl 34d of the head shift lever 34 in the direction of arrow A, and the engagement between the side 34c of the head shift lever 34 and the notch 30b of the eject slider 30 is released, and the head arm 38 is moved in the direction of the arrow A. Moving in the A direction, the head 37 separates from the media. Further, when the solenoid lever 18 slides in the direction of arrow C, the stop lever 20 slides on the shaft 32 and is separated from the shaft 32.

After a predetermined period of time, when the energization to the solenoid plunger 17 is stopped, the solenoid lever 18 is activated by the coil spring 1.
9 to slide in the direction of arrow D. At the same time, the clamp slider 23 is urged by the coil spring 24 and slides in the direction of arrow D, and the shift lever 14 is moved to the shaft 16.
It rotates in the direction opposite to the arrow J by a torsion coil spring installed in it. With this, collect 12
moves in the direction of arrow A and separates from the spindle hub 10, and the media is unclamped. Further, the eject slider 30 slides together with the solenoid lever 18 in the direction of arrow D by the coil spring 31, and is pushed by the disk receiving portion 30d of the eject slider 30, so that the disk is slid and ejected.
At this time, as the solenoid lever 18 slides, the stop lever 20 is lifted onto the large diameter portion 32a of the shaft 32 by the tapered portion 20b. At the same time, the shaft 3 is moved by sliding the eject slider 30.
The tip of the small diameter portion 32b of No. 2 abuts the convex side wall 30a ₁ more than the concave side wall 30a ₂ . Therefore, the shaft 32 moves in the direction of arrow I, and the stop lever 20 falls down the step formed by the large diameter portion 32a and the small diameter portion 32b, and comes into contact with the small diameter portion 32b. The above operation completes the disk ejection operation and returns to the initial state before use.

When the disk is inserted to a predetermined position in this way, the disk sensor 39 generates a detection signal, starts clamping the medium, and becomes ready for use. Further, when the eject button 2 is operated, the media clamp is released and the disk is ejected. In other words, the loading and unloading of the disk is automatically performed in a single action, resulting in good operability, and the media is accurately clamped at the center to prevent damage to the media.

As described above, the flexible disk device according to the present invention includes a first sliding member having a first abutting portion and biased in one direction, a second abutting portion, a second cam, and a first sliding member biased in one direction. a second sliding member having a first locking portion and biased in the one direction; a locking member having a second locking portion; and a clamp having a third cam and a collet attached thereto. a member, a driving means for driving the first sliding member, and a detecting means for detecting attachment of the flexible disk, and after the detection means detects attachment of the flexible disk, the driving means drives the first sliding member. is slidably displaced in a direction opposite to the biasing direction thereof, and the second sliding member is slidably displaced in a direction opposite to the biasing direction by abutment between the first and second abutting portions. engaging the first and second locking parts to lock the second sliding member to the locking member;
The clamping member is displaced by the collision of the second and third cams, and the collet is fitted into the spindle hub to clamp the disk, so just by inserting the flexible disk, the disk can be automatically clamped, making it easy to operate. It has features such as good performance.

Further, the flexible disk device according to the present invention includes a first sliding member having a first cam and a first abutment portion and biased in one direction, a second abutment portion and a second abutment portion. A second sliding member having a cam and a first locking part and biased in the one direction, a locking member having a second locking part, and a third cam having a collet attached thereto. the clamp member, the fourth cam and the third
The fourth cam has a locking part and is movable between an opposing position where the fourth cam opposes and collides with the first cam and a non-opposed position where the fourth cam is separated from the first cam and does not collide, and is movable in the direction of the opposing position. The energized locking release member and the third locking portion attached to the first sliding member are locked before driving to regulate the locking release member to the opposing position, and after driving, the third locking portion is locked. a regulating member that releases the locking part;
It comprises a detection means for detecting attachment of the flexible disk, and after the detection means detects attachment of the flexible disk, the drive means drives the first sliding member to slide and displace the first sliding member in a direction opposite to the biasing direction thereof. The second sliding member is slid in a direction opposite to the urging direction thereof due to the abutment between the first and second abutting portions, and the first and second locking portions are engaged with each other. The sliding member is locked to the locking member, and the clamping member is displaced by the collision of the second and third cams, and the collet is fitted to the spindle hub to clamp the disk, and when an operation signal is received, the clamping member is displaced. The driving is performed to slide the first sliding member in the direction opposite to the biasing direction thereof, and the locking release member is displaced by the collision of the first and fourth cams to release the first and second locking members. Since the locking member is unlocked and the disk is unclamped, the disk can be automatically clamped and unclamped by inserting the flexible disk and generating an operation signal by operating a switch, resulting in good operability. It has the following features.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of an embodiment of the device of the present invention;
FIG. 2 is a perspective view of one embodiment of the main part of the apparatus shown in FIG. 1...Opening window, 2...Eject button, 3...Access indicator lamp, 4...Ready indicator lamp, 10...Spindle hub, 12...Collect, 14...Shift lever, 17...Solenoid plunger, 18...Solenoid lever, 19, 24, 31...Coil spring, 2
0...Stop lever, 22, 33, 36, 42...
Torsion coil spring, 23...clamp slider, 2
5... Lock pin, 26... Roller, 27... Lock lever, 28, 29... Pin, 30... Eject slider, 32... Shaft, 34... Head shift lever, 37... Magnetic head, 38... Head arm, 3
9...Disk sensor, 40...Eject lever,
41...Supporting member.

Claims (1)

[Claims] 1. A first member having a first abutting portion and biased in one direction.
a second sliding member having a second abutting portion, a second cam, and a first locking portion and biased in the one direction, and a second locking portion. A locking member having;
The clamp member includes a clamp member having a third cam and a collet attached thereto, a driving means for driving the first sliding member, and a detecting means for detecting attachment of the flexible disk. After the mounting is detected, the driving means drives the first sliding member in a direction opposite to the direction in which it is urged, and the second sliding member is moved by the collision between the first and second abutting parts slidingly displacing the sliding member in a direction opposite to its biasing direction to engage the first and second locking parts to lock the second sliding member to the locking member. A flexible disk device characterized in that the clamping member is displaced by the collision between the second and third cams, and the collet is fitted into the spindle hub to clamp the disk. 2. A first sliding member having a first cam and a first abutment part and biased in one direction, and a first sliding member having a second abutment part, a second cam and a first locking part. A second sliding member biased in one direction, a locking member having a second locking portion, a clamp member having a third cam and having a collet attached thereto, and a fourth cam. and a third locking portion, and moves between an opposing position where the fourth cam opposes and collides with the first cam and a non-opposed position where the fourth cam is separated from the first cam and does not collide. an unlocking member that is enabled and biased in the direction of the opposing position; a driving means that drives the first sliding member; A regulating member that locks the locking portion and restricts the lock release member to the opposing position and releases the lock of the third locking portion after driving, and a detection means that detects attachment of the flexible disk. After the detection means detects that the flexible disk is mounted, the drive means drives the first sliding member in a direction opposite to the direction in which it is biased, and the first and second shocks are removed. The second sliding member is slidably displaced in a direction opposite to its biasing direction due to the collision of the mating portions, and the first and second locking portions are engaged with each other. is locked to the locking member, the clamping member is displaced by the collision of the second and third cams, the collet is fitted to the spindle hub, the disk is clamped, and an operation signal is input. The first sliding member is driven by the driving means to slide in a direction opposite to the biasing direction thereof, and the unlocking member is displaced by the collision between the first and fourth cams. A flexible disk device characterized in that the first and second locking members are unlocked to release the clamp of the disk.