JPH0477985B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to a floppy disk device.
This invention relates to a floppy disk ejecting device that automatically ejects a floppy disk in response to an eject signal from a host after loading data to protect software.

〓Conventional technology〓 In general, the disk clamping mechanism of a 3.5-inch FDD (floppy disk drive) involves horizontally inserting a floppy disk (hereinafter simply referred to as a disk), and then inserting the floppy disk into the spindle shaft of the floppy disk drive motor. It must be lowered vertically into position. In addition, the disc is generally released using a push button type that is easy to operate. In this system, a cassette containing a disk is held in a box-shaped cassette holder, the holder is lifted by a push lever with a push button, and the disk is ejected using the restoring force of a spring or the like.

On the other hand, there is an auto-eject mechanism that automatically ejects the disk in response to an eject signal from the host after loading data. For example, as shown in Japanese Utility Model Application Publication No. 58-26771, there is a system in which the push lever is moved by a dedicated geared motor to mechanically perform an artificial push operation.

The necessity of this auto-eject mechanism itself is to (1) protect the media, (2) facilitate and remind media replacement (improving operability with application software), and (3) prevent malfunctions.

〓Problems to be solved by the invention〓 However, the above conventional auto-eject mechanism has the following problems:
It has the disadvantage of requiring an expensive geared motor and a large installation space.

SUMMARY OF THE INVENTION An object of the present invention is to provide a floppy disk ejecting device that can realize auto-ejecting at low cost and in a space-saving manner by using a floppy disk drive motor without using a dedicated auto-ejecting motor.

<Means for Solving the Problems> The present invention provides a floppy disk device in which a floppy disk 1 inserted into a floppy disk holding portion 5 is rotated by a floppy disk drive motor. It is capable of meshing with the relay gear 12b rotated by the motor, is released from the mesh with the relay gear 12b at the notch 13c, is energized by the urging means 3a in the rotational direction to mesh with the relay gear 12b, and is locked. A notched gear 13 whose rotation is prevented by means 13a and 14a, and a locking means 13 for this notched gear 13.
an electromagnetic solenoid 15 that controls the start of the notched gear 13 by releasing locks a and 14a in response to an eject signal;
an eject lever 3 which is slid by the notched gear 13 started from 5 through the rotary/linear motion converting mechanisms 13b, 3c and raises the floppy disk holding section 5 through the motion direction changing mechanism 6; Due to the eject operation of the eject lever 3, the engagement with the eject lever 3 is released, and the spring 19 is released.
a latch lever 16 that is operated to push out the floppy disk 1 from the floppy disk holding portion 5;
This is a floppy disk ejecting device comprising:

〓Operation〓 According to the present invention, when data loading is completed and an eject pulse is output with the floppy disk attached to the floppy disk holding portion 5, the electromagnetic solenoid 15 is activated and the locking means 13a is activated. ，
The locking by 14a is released, and the notched gear 13
It becomes possible to rotate, and the relay gear 1 is rotated by the biasing means 3a.
The notched gear 13 rotated until it meshes with the notch gear 2b is rotated by the floppy disk drive motor via the relay gear 12b. When the eject lever 3 moves through the rotation/linear motion conversion mechanisms 13b and 3c due to the rotation of the notched gear 13, the floppy disk holding section 5 is raised by the movement direction changing mechanism 6, and the eject lever 3 When the latch lever 16 is disengaged from the latch lever 16, the latch lever 16 is rotated by the spring 19, and the floppy disk 1 is pushed out from the floppy disk holding portion 5 and released to the outside.

Embodiments Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

1 is a 3.5-inch floppy disk (hereinafter simply referred to as a disk), and 2 is a base frame.

Eject lever 3 on this base frame 2
is installed so that it can move forward and backward. This Ijieku Lever 3
is integrally equipped with a bar spring 3a as a biasing means and a pin 3b, and further has a convex portion 3c formed therein. Furthermore, an eject button 4 is provided at the front end of one side of the eject lever 3.

A cassette holder 5, which serves as a floppy disk holding section located on the eject lever 3 and holds the disk 1, is connected to the eject lever 3 via a link 6, which serves as a movement direction changing mechanism.

The cassette holder 5 is guided in the vertical direction by a guide shaft 7 projecting from the base frame 2. In addition, a read/write head 8 for the floppy disk is located approximately at the center of the base frame.
will be established. Further, the disk is supported by a support 9 which also serves as a slide guide for the eject lever 3.

10 is a spindle shaft of a direct drive motor for driving a floppy disk;
A spindle hub 10a having gears formed on its outer periphery is integrally fitted to the shaft 10, and a reduction relay gear train is provided to the gears of the hub 10a. That is, a gear 11a is engaged, a gear 12a is engaged with a gear 11b coaxial with this gear, and a gear 12b is provided coaxially with this gear 12a.

A notched gear 13 is rotatably supported in mesh with the gear 12b. This notched gear 13
is the cam 13a and the eject lever press pin 1.
3b, and further includes a notch 13 in a part.
It forms c. The pressing pin 13b and the convex portion 3c of the eject lever 3 are connected to the notch gear 1.
This is a rotation/linear motion conversion mechanism that converts the rotation of the eject lever 3 into the linear motion of the eject lever 3.

A stop plate 14 is provided to be movable forward and backward relative to the cam 13a, and the cam 13a is locked by a convex portion 14a of the stop plate 14 as shown in FIG.
That is, the cam 13a and the convex portion 14a are locking means for the notched gear 13. The above stop plate 14
The guide hole 14b provided at two locations is guided and held by a guide member, and the movable iron core 15a of the electromagnetic solenoid 15 is driven to move forward and backward.

A latch lever 16 that engages with the pin 3b of the eject lever 3 to lock the lever 3 is provided on the base frame 2 so as to be rotatable by a rotation fulcrum shaft 17. This latch lever 16 has
A pin 16a that engages with the inserted disk 1 is provided protrudingly, and a convex portion 16 that engages with the pin 3b is provided.
and a recessed portion 16c that fits therein is formed.

The eject lever 3 is biased in the direction of the floppy disk insertion slot by a tension coil spring 18 provided between it and the support column, and the latch lever 16 is biased by a tension coil spring provided between it and a fixing member (not shown). energized counterclockwise by 19,
Further, the movable iron core 15a of the solenoid 15 is urged in the pushing direction by a compression coil spring 20. Also, the bar spring 3a of the eject lever 3
As shown in FIG. 3, lateral pressure is applied to the pin 13b of the notched gear 13, giving a counterclockwise rotational force to this notched gear.

Next, the operation of this embodiment will be explained.

First, when no disk is inserted, each mechanism is in the state shown in FIG.

When the disk 1 is pushed into the cassette holder 5, the disk will lock onto the pin 16a of the latch lever 16.
Press. At this time, the latch lever 16 is
7, the pin 3b of the eject lever 3 is released, and the eject lever 3
is moved to the imaginary line position in FIGS. 3 and 1 by the restoring force of the tension coil spring 18, and the pin 16a
is held in the imaginary line position in FIGS. 3 and 1,
The disk 1 is lowered by the link 6 to the position indicated by the dashed line in FIG. 1, and enters the read/write state.

Next, to explain the operation for manually ejecting the disk 1, when the eject button 4 is pushed in as shown in FIG.
is lifted and the eject lever 3 is pushed in to the position shown in FIG. 2, the pin 1, which had been restrained in the position shown in FIG.
6a moves to the position shown in FIG. 2 by the restoring force of the tension coil spring 19 and pushes out the disk.

Auto-eject is a method of automatically performing this button pushing operation using the rotational force of the disk drive motor as follows.

When the disk is inserted and the motor starts rotating, the deceleration relay gears 11a, 11b, 12a,
12b is constantly rotating in the direction of the arrow in FIG. At this time, the eject lever 3 is in the position shown in FIG.
is bent in an arcuate shape and applies a rotational force to the notched gear 13 in the direction of the arrow.

When data loading is completed and an eject pulse is issued from the host, the solenoid 15 attracts the movable iron core 15a, the stop plate 14 moves, and its convex portion 14a is disengaged from the cam 13a, and the notched gear 13
is rotated in the direction of the arrow in FIG. 3 by the rod spring 3a, meshes with the pinion gear 12b, and the notched gear 13 starts rotating. And this notched gear 13
The pin 13b is connected to the convex portion 3c of the eject lever 3.
The pin 3b of the eject lever 3 moved thereby fits into the recess 16c of the latch lever 16, and the latch lever 16 is rotated counterclockwise by the spring 19, and the pin 16a moves the floppy disk 1 into the cassette holder 5. Push out more.
The notch 13c of the gear 13 is connected to the pinion gear 12.
Rotate until it faces b and complete the eject operation.

In addition, the release device of the present invention is as shown in the examples.
The invention is not limited to 3.5-inch type floppy disks, but can also be applied to, for example, 3-inch type disks.

Furthermore, the housing case for the floppy disk is not limited to the cassette type, but the present invention can also be applied to the jacket type used in large floppy disks.

〓Effects of the Invention〓 According to the present invention, the notched gear can be started by an electromagnetic solenoid that responds to an eject signal,
This notched gear is meshed with a relay gear and rotated by a floppy disk drive motor, and this notched gear drives the floppy disk to be ejected, so there is no need for an expensive geared motor as in the past. , an auto-eject mechanism can be constructed at low cost. Furthermore, the drive mechanism can be made compact and lightweight. Furthermore, unlike a gear motor, it is quiet when ejecting. In particular, by rotating the notch gear and sliding the eject lever via the rotation/linear motion conversion mechanism using only one drive source, which is the floppy disk drive motor, The floppy disk can be pushed out from the floppy disk holding part by a simple mechanism of raising the floppy disk holding part and operating the latch lever, which has been disengaged from the ejection lever, by means of a spring. In addition, when the notch gear is stopped, the notch gear can always be reliably stopped at a fixed position by the locking means, and when the notch gear is started, the notch gear is locked by an electromagnetic solenoid that is driven in response to an eject signal. When the lock is released, the energizing means reliably rotates the notch gear until it meshes with the relay gear, so that the eject operation can be started automatically and reliably.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the floppy disk ejecting device of the present invention, and FIG. 2 is a plan view thereof.
FIG. 3 is a plan view showing the operation of a part thereof. 1... Floppy disc, 3... Eject lever, 3a... Rod spring as a biasing means, 5...
...Cassette holder as a floppy disk holding part, 6...Link as a motion direction changing mechanism,
12b... Relay gear, 13... Notch gear, 13
a, 14a...Locking means, 13b, 3c...Rotation/linear motion conversion mechanism, 13c...Notch, 15...
Electromagnetic solenoid, 16...Latch lever, 19...
...Spring.

Claims (1)

[Scope of Claims] 1. In a floppy disk device in which a floppy disk inserted in a floppy disk holding portion is rotated by a floppy disk drive motor, the floppy disk meshes with a relay gear rotated by the floppy disk drive motor. a notch gear that is capable of being disengaged from the relay gear at the notch portion, is energized by an energizing means in a rotational direction to mesh with the relay gear, and is prevented from rotating by a locking means; An electromagnetic solenoid controls the start of the notch gear by releasing the locking means of the gear in response to an eject signal, and the notch gear started by the electromagnetic solenoid causes the notch gear to actuate through a rotation/linear motion conversion mechanism. an eject lever that is slid and raises the floppy disk holding portion through a movement direction changing mechanism; and an eject lever that is disengaged from the eject lever by the eject operation of the eject lever and is actuated by a spring to raise the floppy disk. 1. A floppy disk ejecting device comprising a latch lever for pushing the floppy disk out from a floppy disk holding section.