JPH0210620Y2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Technical Field of the Invention The present invention relates to a medium ejection mechanism of a floppy disk device, and in particular, an object of the present invention is to be able to make the timing for ejecting a recording medium appropriate and to simplify the structure. This invention relates to a media eject mechanism that allows for

(2) Prior Art and Problems The medium eject mechanism of conventional floppy disk devices slides along the base as the recording medium is inserted through the medium insertion hole provided at the front of the device, and the eject mechanism slides the recording medium onto the base at a predetermined position. The latch on the lower surface engages with a stopper protruding from the top and has an eject bar biased in the opposite direction of the insertion, and an operating lever for fixing or releasing the inserted recording medium from the rotation drive section. By operating this operating lever to the release side, a collet that presses the rotational center of the recording medium against the rotation drive unit is raised, and the magnetic head is raised in mechanically interlocked with the raising of the collet. , the eject bar is disengaged and slid, and the recording medium is ejected by the urging force of the eject bar in the opposite direction of insertion. However, in this case, it is difficult to synchronize the raising of the collect with the slide of the eject bar, and if the eject bar slides before the collect has fully risen,
Since the magnetic head was not raised sufficiently, the recording medium that was sliding at the same time as the eject bar came into contact with the magnetic head, causing the recording medium to eject. Therefore, it is prohibited to rub the surface of a recording medium such as a floppy disk with a magnetic head, or to rub the core surface of the magnetic head with the protective cover of the recording medium, thereby damaging both. It was hot. In addition, the structure was complicated due to the large number of parts between the operating lever and the eject bar.

(3) Purpose of the invention The present invention was made to solve the above problems, and provides a floppy disk device that can make the timing of ejecting the recording medium appropriate and has a simple structure. The purpose of the present invention is to provide a media eject mechanism.

(4) Structure of the device According to the present invention, when a recording medium is inserted through the medium insertion hole provided on the front side of the device, it slides along the base and is fixed at a predetermined position. In a floppy disk device having an eject bar biased in the opposite direction, and an operating lever for fixing or releasing the inserted recording medium from the rotational drive unit, the eject bar is tilted in the opposite direction of insertion of the recording medium. A locking pawl is provided on the diagonal side of the base, and a stopper member that engages with the locking pawl is provided on the base, and a recording medium is attached to the tip of the operating lever. A first rotary cam is provided for operating an operating lever that is press-fixed to the rotary drive portion, and a pressing portion is provided adjacent to the first rotary cam to disengage the stopper member from the locking pawl of the eject bar. By providing a medium ejecting mechanism for a floppy disk device, the medium ejecting mechanism for a floppy disk device is further provided with a second rotary cam having a stopper portion that engages with a locking notch provided on a side portion of the ejecting bar. It will be achieved.

(5) Embodiments of the invention Hereinafter, embodiments of the invention will be described in detail based on the attached drawings.

FIG. 1 is an external perspective view of a floppy disk device according to the present invention, and FIG. 2 is an internal explanatory view showing its medium eject mechanism. An insertion hole 3 is provided on the front surface of the floppy disk device 1, into which a recording medium 2 made of a floppy disk is inserted from the direction of arrow A, and the inserted recording medium 2 is placed near the insertion hole 3. An operating lever 4 that is fixed to or released from the rotation drive unit is provided so as to be rotatable in the directions of arrows B and C.

As shown in FIG. 2, an eject bar 6 is provided above the base 5 in the floppy disk device 1 and slides along the base 5 in the directions of arrows D and E. This eject bar 6
is the recording medium 2 in the floppy disk device 1
As the recording medium 2 is inserted in the direction of arrow A, it slides in the direction of arrow D, and after use, it slides in the direction of arrow E to eject the recording medium 2 from the insertion hole 3. Insertion direction A
A restoration spring 7 is provided which biases the restoration spring 7 in a slightly oblique direction in the opposite direction, and a locking pawl 8 that projects approximately at right angles is provided on the side portion on the diagonal side to which the restoration spring 7 is connected. There is. This locking claw 8 is connected to a base 5 which will be described later.
It engages with a stopper member 19 provided above to stop the eject bar 6 from returning in the direction of arrow E. Further, a locking notch 16 is formed adjacent to the locking pawl 8 in a direction substantially perpendicular to the longitudinal direction of the eject bar 6. Furthermore, the tip 9 of the eject bar 6 is bent downward into an L-shape so that it can come into contact with the tip of the recording medium 2 when the recording medium 2 is inserted.

On the front side of the floppy disk device 1,
An operating lever 4 is provided. This operating lever 4 is used to fix or release the recording medium 2 inserted through the insertion hole 3 to a rotation drive unit 11 (see FIG. 3) such as a spindle of a DC motor. A rotary shaft 10 is coupled to the rotary shaft 10, and the leading end of the rotary shaft 10 is connected to a recording medium 2, as shown in FIGS. 2 and 3.
The center of rotation of the collet 12 extends toward the operating lever 13 of the collet 12, which presses and fixes the rotational center of the collet to the rotary drive unit 11.

As shown in FIG. 2, a first rotating cam 14 and a second rotating cam 15 are provided adjacent to each other at the tip of the rotating shaft 10. As shown in FIG. The second rotary cam 15 disengages the locking pawl 8 of the eject bar 6 from the stopper member 19 of the base 5 and prevents it from returning in the direction of arrow E. As shown in FIG. A step portion formed on one side of the circumferential portion of the fan-shaped member around the rotary shaft 10 is used as a pressing portion 17, and an edge portion of the circumferential portion is used as a stopper portion 18. The pressing portion 17 has a side edge 16' adjacent to the locking notch 16 of the eject bar 6.
Press the locking pawl 8 and the stopper member 1 of the base 5.
9. The stopper portion 18 stops the eject bar 6, which has entered the locking notch 16 of the eject bar 6, from returning in the direction of arrow E. As shown in FIG. 3, the first rotary cam 14 is rotated by the rotation of the operating lever 4 to vertically move the collet 12 provided at the tip of the operating lever 13, thereby causing the rotation of the recording medium 2. The center part is press-fixed to the rotary drive part 11 of the device 1, and the fixation is released.As shown in FIG. 4, 14 is a first rotary cam; is rotated in the H direction, the eject bar 6 is pressed by the R surface of the pressing portion 17 of the second rotary cam 15.
by pushing the side edge 16' in the direction of arrow J, the ejector bar 6 moves to the position 6'. At this time, the locking pawl 8 comes off from the stopper member 19, but the eject bar 6
moves very slightly in the E direction and is stopped at the P portion by the stopper 18. As the first rotary cam 14 rotates in the F direction, the eject bar 6 is disengaged from the stopper 18 and moves in the E direction. The outer surface of the tip of the eccentric member whose center of rotation is the rotating shaft 10 is an overhanging cam surface 14'. Then, by pressing or releasing the upper surface of the operating lever 13 with this projecting cam surface 14', the operating lever 13 is moved as shown in FIGS. 5a and 5b.
3 up and down in the directions of arrows I and K.

A stopper member 19 is provided on the base 5 near the second rotary cam 15 on the side where the locking claw 8 of the eject bar 6 is provided. This stopper member 19 prevents the eject bar 6 from returning in the direction of arrow E when it fully slides in the direction of arrow D as the recording medium 2 is inserted in the direction of arrow A. Rotating cam 15
It has a recess 20 at the corner of the side, and the locking pawl 8 of the eject bar 6 is engaged with this recess 20.

Next, the operation of the medium eject mechanism configured as above will be explained. First, the operating lever 4 provided on the front side of the apparatus 1 is placed in a state where the recording medium 2 is not inserted, for example, in a horizontal position. In this state, the first rotating cam 14 and the second rotating cam 1
5 is in a state of being rotated in the direction of arrow F as shown in FIG. Therefore, escape bar 6
is retracted in the direction of arrow E by the biasing force of the recovery spring 7, as shown in FIG. 6a. Furthermore, the collet 12 which holds down the rotational center of the recording medium 2 is raised together with the magnetic head (not shown) as shown in FIG. In the above state, the recording medium 2 made of a floppy disk is inserted in the direction of arrow A from the medium insertion hole 3 at the front of the apparatus. At this time, as shown in FIG. 2, the tip of the protective cover of the recording medium 2 comes into contact with the tip 9 of the eject bar 6, and as the recording medium 2 is inserted in the direction of arrow A, the eject bar 6 is attached to the base 5. slide it in the direction of arrow D. The locking pawl 8 protruding from one side of the eject bar 6 is connected to a stopper member 19 provided on the base 5 from the position shown in FIG. 6a.
The stopper member 19 slides along the side surface of the eject bar 6 side as shown in FIG.
When it reaches the position of the recess 20, it is moved in the direction of arrow G by the diagonally backward biasing force of the recovery spring 7, and its tip enters and engages with the recess 20. In this state, the recording medium 2 is inserted into the apparatus 1, and the eject bar 6 stops. Next, the operating lever 4 is rotated 90 degrees from the initial position, and is operated, for example, in the direction of arrow B in FIG. 1 to the vertical position. At this time, the first rotary cam 14 rotates in the direction of arrow H as shown in FIG.
3 in the direction of arrow I. Then, as shown in FIG. 3, the collet 12 provided at the tip of the operating lever 13 descends, and at the same time, the magnetic head also connects and descends to come into contact with the recording medium 2, thereby rotating the center of rotation of the recording medium 2. Press and fix to the rotation drive unit 11 of the device 1. At the same time as this operation, the first rotating cam 1
The second rotary cam 15 provided adjacent to the eject bar 6 also rotates in the direction of the arrow H as shown in FIG.
It enters into the locking notch 16 of. Immediately after the first rotary cam 14 presses and fixes the recording medium 2 to the rotary drive section 11, the pressing section 17 of the second rotary cam 15 moves to the position shown in FIG. 5b. As shown, the side edge 16' of the eject bar 6 adjacent to the locking notch 16 is pressed in the direction of arrow J. Then, as shown in FIG. 6c, the locking claw 8 of the eject bar 6 moves in the direction of arrow J, and the stopper member 1 provided on the base 5 moves.
9 and removes the engagement between the two. However, at this time, the stopper portion 18 of the second rotary cam 15 is inserted into the locking notch 16 of the eject bar 6.
Since the ejector bar 6 is located inside, the stopper portion 18 locks the ejector bar 6 in that position.
In this way, the device 1 is set into use.

Next, in order to eject the recording medium 2 after using the device 1, the operating lever 4 is rotated 90 degrees from the above-mentioned position of use, for example in the direction of arrow C in FIG. to the horizontal position. At this time, the first rotary cam 14 rotates in the direction of arrow F from the state shown in FIG. 5b to the state shown in FIG.
rises in the direction of arrow K. Then, the collet 12 provided at the tip of the operating lever 13 rises, and the magnetic head also rises in conjunction with this, as shown in FIG. Release the pressure fixation. At the same time as this operation, the first rotary cam 15 also rotates in the direction of arrow F as shown in FIG. to unlock the eject bar 6. At this time, the eject bar 6 slides in the direction of arrow E as shown in FIG. 6a by the biasing force of the recovery spring 7. As the eject bar 6 slides, the recording medium 2 is ejected from the apparatus 1 by the L-shaped tip 9. Here, according to FIG. 4, the operating lever 4 and the shaft 10
To explain the related operation of the first rotary cam 14 and the eject bar 6 connected to the first rotary cam 1,
4 rotates in the H direction, the R surface of the pressing portion 17 of the second rotary cam 15 pushes the side edge 16' of the eject bar 6 in the direction of arrow J, and the eject bar 6 moves to the position 6'. The locking pawl 8 comes off the stopper member 19, but the eject bar 6 moves very slightly in the E direction and closes the stopper 18 at the P section.
can be stopped by As the first rotary cam 14 rotates in the F direction, the eject bar 6 is disengaged from the stopper 18 and moves in the E direction to eject the recording medium 2. Note that the second rotating cam 1
The timing of unlocking of the locking notch 16 of the eject bar 6 by the stopper portion 18 of No. 5 can be set to an appropriate timing by appropriately selecting the overhanging shape of the stopper portion 18.

(6) Effects of the invention Since the invention is configured as described above, the first rotary cam 14 and the second rotary cam 15 provided at the tip of the rotary shaft 10 can be rotated by the operating lever 4. By doing so, it is possible to release the pressing fixation of the recording medium 2 and also to release the lock of the eject bar 6, so that the recording medium 2 can be ejected together with the eject bar 6. In this case, by appropriately selecting the protruding shape of the stopper portion 18 of the second rotary cam 15, the timing of ejecting the recording medium 2 can be made appropriate. That is, when ejecting, the eject bar 6 slides when the collet 12 and the magnetic head have risen sufficiently, so that the magnetic head and the recording medium 2 do not slide, and therefore, there is no damage to the recording medium 2 or the magnetic head. You can do it like this. In addition, the parts from the operating lever 4 to the eject bar 6 are as follows:
Rotating shaft 10 and first and second rotating cams 1
Only 4 and 15 are required, and the number of parts can be reduced and the structure can be simplified.

[Brief explanation of drawings]

1 is an external perspective view of a floppy disk device according to the present invention, FIG. 2 is an internal explanatory view showing the medium eject mechanism, FIG. 3 is a view taken in the direction of arrow M in FIG. 2, and FIG. A side view showing the first rotating cam and the second rotating cam, b is a view in the direction of a, c is b
FIGS. 5a and 5b are explanatory diagrams showing the operating states of the rotary cam and the operating lever, and FIGS. 6 a to 6c are explanatory diagrams showing the operating states of the eject bar. DESCRIPTION OF SYMBOLS 1... Floppy disk device, 2... Recording medium, 3... Medium insertion hole, 4... Operating lever, 5...
... Base, 6 ... Eject bar, 7 ... Recovery spring, 8 ... Locking claw, 10 ... Rotating shaft, 11
... Rotation drive unit, 12 ... Collet, 13 ... Operating lever, 14 ... First rotary cam, 15 ... Second rotary cam, 16 ... Locking notch, 17 ... Pressing section, 18 ... Stopper portion, 19 ... Stopper member, 20 ... Recessed portion.

Claims (1)

[Scope of utility model registration request] The device has an eject bar that slides along the base and is fixed at a predetermined position as the recording medium is inserted through the medium insertion hole provided on the front surface of the device, and is biased in the opposite direction of the insertion. In a floppy disk device having an operation lever for fixing or releasing a recording medium from a rotational drive unit,
The eject bar is biased diagonally in the opposite direction of insertion of the recording medium, and a locking pawl is provided protruding from the diagonal side of the eject bar, and a stopper member that engages with the locking pawl is provided on the base. A first rotating cam for operating an operating lever that presses and fixes the recording medium to the rotational drive section is provided at the tip of the operating lever, and a first rotating cam is provided adjacent to the first rotating cam to engage the stopper member and the eject bar. A floppy piece characterized in that a second rotary cam is provided, the second rotary cam having a pressing part for disengaging from the locking pawl and a stopper part for engaging with the locking notch provided in the side part of the eject bar. The media eject mechanism of a disk device.