JPS6124053A - Disc ejection mechanism of floppy disc drive device - Google Patents

Abstract

PURPOSE:To prevent a prescribed quantity of a disc from being ejected even when a spring force has variation by holding a disc retainer at ejection while bringing it into contact with an end face of a hole for hub support or an end face of a hole for head. CONSTITUTION:When the sum between an energizing force of a spring incorporated in a disc case A and an energizing force of a spring 9 of a trigger lever 8 is larger than a value, the ridge of the hole 14 for hub support is pushed out of the disc retainer 11 and the disc case A is ejected further. Since the hole 16 for head loading and the hole 14 for hub support are placed at the depth on a line, the disc retainer 11 is placed in the hole 16 for head loading and kept in a stage which is in contact with the ridge of the hole 16 for head loading. Thus, the disc case A is held surely by the disc retainer 11 without being jumped out externally.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk eject mechanism for a floppy disk drive, and more particularly to a disk eject mechanism for a floppy disk drive using a 3-inch floppy disk.

Generally, for a 3-inch Fronbi disk, a spring for closing the shack is built into the disk case, and when a floppy disk is installed in a floppy disk drive device, a biasing force is accumulated in the spring. At the time of ejection, most of the floppy disks are ejected to the outside of the floppy disk drive by the accumulated spring biasing force inside the disk case.

However, in the case of a 3-inch floppy disk configured as described above, the built-in spring force is not standardized (because there is a large variation in the standard), so when the floppy disk is ejected, depending on the floppy disk, This has the disadvantage that there is a risk that the floppy disk may completely fly out of the floppy disk drive and be damaged.

[Purpose of the invention]

This invention eliminates the drawbacks of the conventional ones as described above, and makes it possible to prevent discharge of more than a certain amount even if the spring force built into the Freonbi disk varies and the force is large. This invention relates to a disk eject mechanism for a floppy disk drive that can perform

[Summary of the invention]

The present invention is a floppy disk drive device using a 3-inch floppy disk, in which a disk holder can be brought into contact with the end surface of a hub receiving hole at the time of ejection even if there are variations in the biasing force of a spring built into the floppy disk. The general idea is that the floppy disk is prevented from ejecting from the floppy disk drive by holding it against the head or by holding it in contact with the end surface of the head hole.

[Embodiments of the invention]

Embodiments of the invention shown in the drawings will be described below.・ Figure 1 shows a plan view, and the eject button 1
The eject lever 2, which is placed horizontally with the front side of the Fronbi disk drive device, slides forward and backward.
It is held so that it can move freely only in the horizontal direction (as shown in the figure), and is slightly wider than the disk case, and both sides are bent vertically to form side plates 3.3. Further, a housing 4 for storing a floppy disk is provided on the upper surface of the eject lever 2, and both sides of this housing 4 hang down to form a hanging piece 7.7. In each case, a roller 6 is pivoted, which is located in a guide 5.5 with an inclined end face formed on the side plate 3.3 of the ejector lever 2.

Also, although not shown, each of the hanging pieces 4.4 has another roller supported 9, and this roller is attached to a vertical groove (not shown in the paper in FIG. 1), and restricts the housing 4 to move up and down only in the direction perpendicular to the plane of the paper in FIG.

Therefore, as the eject lever 2 slides forward and backward, the housing 4 can be moved up and down by the guide section 5.5 having the inclined section.

Reference numeral 8 denotes a trigger lever that is biased counterclockwise by a spring 9, and when a floppy disk is pushed in, this trigger lever is pushed by the front end surface of the disk case and rotated clockwise. is in a state,
When the floppy disk is not attached, the trigger lever 8 is rotated counterclockwise by the spring 9, so that the bent piece 10 of the trigger lever 8 is engaged with the notch 2b of the eject lever 2.

FIG. 3 shows a disk case A for a floppy disk inserted into the storage section of the housing 4, a disk holder 11 that clamps the magnetic disk inside the case, and a disk holder 11 that works together to clamp the floppy disk. , the relationship with the hub receiver 13 to which the monitor spindle 12 is connected is shown, and the disc case A
is provided with a hub-receiving hole 14 large enough to insert the disc holder 11 from above and the hub receiver 13 from below in its center, and a shutter that can be opened and closed in the forward direction of insertion. A hole 16 is provided for the head, which faces from the inside, and in which the head 15 is positioned and comes into contact with the internal magnetic disk when the shutter is opened (see FIG. 2).

The disk retainer 11 is suspended from a shaft portion 17 suspended from the center of a support plate 24 attached above the housing 4 via a bearing 18, and is suspended from the shaft portion 17 via a bearing 18.
The disc holder 11 is rotatable along the shaft 17 at a lower position where its lower surface presses against the disc hub 19 and at a lower position where it is separated from the disc hub 19 and at the same time holds the upper end of the disc case A. It is movable up and down between an upper position below the horizontal line, and is always biased toward the lower position by a spring 20.

Note that 21 is a positioning bottle inserted into a positioning hole 22 of the inserted disk case A (the top view of which is shown in FIG. 2).

Next, the operation of the above will be explained.

First, from the state shown in FIGS. 1 and 3, that is, the state in which the disk case A is loaded and the floppy disk provided therein can be read/written, the eject button 1 is pressed to release the eject lever 2.
When the trigger lever 8 is pushed in against the spring 23, the bent piece 10 of the trigger lever 8 is positioned within the notch 2b of the eject lever 2, so the trigger lever 8 is rotated counterclockwise by the biasing force and the eject lever 2 is rotated. Hold in pushed position.

On the other hand, as the eject lever 2 is pushed in, the housing 4 is moved upward relative to the eject lever 2 by the rollers 6 on both sides thereof and the guide portion 5 of the eject lever 2 where the rollers 6 are located. The disk holder 11 and the hub receiver 13 of the spindle 12, which were holding the hub 19 of the disk, separate from each other and release the holding, and the head 15 is also separated by an appropriate mechanism, so you can hold the disk case A with your fingers. It can be taken out. (Note that since the eject lever 2 is held in the pushed-in position, the housing 4 is also held in the upper position.) In this case, the disc case A itself has a built-in spring for closing the shutter. In the states shown in FIGS. 1 and 3, the shutter is open and a biasing force is accumulated in this spring, and this accumulated biasing force and the spring 9 of the trigger lever 8 are combined. When the sum of the biasing forces is less than a certain value, depending on the biasing forces accumulated in those springs, such a biasing force is accumulated as to cause the disc case A to move the disc holder 11 upward and jump outward. Therefore, since the disc case A is held in the state shown in FIG. 4 in which the edge of the hub receiving hole 14 of the disc case A is in contact with the disc holder 11, all that is left is to operate the drawer. By doing this, the disc holder 11 can be moved upward against the biasing force of the spring 20, and the disc case A can be taken out.

Also, when the disc case A is taken out in the same manner as above, the biasing force of the spring built into the disc case A is greater than that described above.

is also large, that is, when the sum of the biasing force of the spring built into the disc case A and the biasing force of the spring 9 of the trigger lever 8 is greater than the certain value,
Due to these biasing forces, the edge of the hub receiving hole 14 of the disk case A is pushed out from the disk holder 11, and as a result, the disk case A is further ejected. Moreover, since the head insertion hole 16 is located on the back side on the same line as the hub receiving hole 14 with respect to the insertion/removal direction of the disk case A, the hub receiving hole 16 of the disk case A As shown in FIG. 5, the disk holder 11 that has come out of the head insertion hole 14 is located in the head insertion hole 16, and is held in contact with the edge of the head insertion hole 16. The disc case A is securely held by the disc holder 11 without flying outward.

Therefore, no matter how strong the biasing force of the spring built into the floppy disk case is, the disk case will surely be held in contact with the disk holder, and all that is left to do is to be pulled out by the operator. It is something.

Note that the spring inside the disc case A is connected to the engaging part for controlling the opening and closing of the shirt shirt provided on the side end surface of the disc case.
For example, by engaging and pushing in the protrusion of the housing 4, the spring force is accumulated, and by releasing the clamp of the magnetic disk in the disk case A, it acts to immediately eject the disk case A. However, since this configuration is well known, it is omitted here. Furthermore, if the disc case A is pushed in from the state in which the disc case A is taken out, the trigger lever 8 is rotated clockwise by the front end surface of the disc case A, and the eject lever 2 is released from its lock and moved forward. protruding from, and also
Along with this, the housing 4 is moved downward by the biasing force of a spring (not shown), reaching the state shown in FIG. 1.3.

〔Effect of the invention〕

By configuring the invention as described above, it is possible to always prevent the disk case from being completely ejected from the floppy disk drive device regardless of the biasing force of the spring built into the disk case. It has excellent effects such as being highly reliable and being able to be manufactured at low cost due to its simple configuration.

[Brief explanation of drawings]

Figure 1 is a schematic plan view, Figure 2 is a plan view showing the disk case, Figure 3 is a schematic vertical sectional view of the one in Figure 1, and Figures 4'' and 5 are the magnetic disks inside the disk case. 1 is a schematic longitudinal cross-sectional view showing the relationship between the disc holder and the disk presser. 1. Eject button 2. Eject lever 2a. Surface portion 2b. All notches 3------One side plate 4------Housing 5---One slanted long hole 6---One roller? -----Descent piece 8------ Trigger lever 9 .20.23----Spring 10-----Bending piece 11----Disk holder 12----Spindle 13---- Hub holder 14------- Hole 15 for hub receiving - Head 16 - Hole 17 for head - Shaft part I8 - 1111 Bearing 19 - Hub 21 -・--Positioning pin 22-----Positioning hole 24-----Support plate

Claims (1)

[Claims] In a floppy disk drive device that uses a magnetic disk housed in a disk case that has a hub receiving hole and a head hole, the outer diameter of the disk holder is set to 2.
In addition, when the disc holder is opened, the lower surface thereof is lower than the upper surface of the disc case, and when the disc holder is removed, the disc holder is placed in the hub receiving hole. A disk eject mechanism for a floppy disk drive device, characterized in that the disk case is held by contacting either an edge or an edge of the head hole.