JPH0156458B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a disk eject mechanism for a floppy disk drive device, and in particular, to a disk eject mechanism for a floppy disk drive device using a 3-inch floppy disk. It concerns the ect mechanism.

Generally, for a 3-inch floppy disk, a spring for closing the shutter is built into the disk case, and when the floppy disk is loaded into the floppy disk drive device, a biasing force is applied to the spring. In many cases, the accumulated particles are ejected to the outside of the floppy disk drive device by the biasing force of the spring inside the disk case.

However, in the case of the 3-inch floppy disk configured as described above, the built-in spring force is not standardized (because there is a large variation in specifications), so when ejecting the floppy disk, Some floppy disks have the disadvantage that they may completely eject from the floppy disk drive and be damaged.

[Purpose of the invention]

This invention eliminates the drawbacks of the conventional devices as described above, and prevents the floppy disk from ejecting more than a certain amount even if the spring force built into the disk varies and the force is large. The present invention relates to a disk eject mechanism of a floppy disk drive device that can perform the following steps.

[Summary of the invention]

This invention provides a floppy disk drive device that uses a 3-inch floppy disk, and even if there are variations in the biasing force of the spring built into the floppy disk, the disk holder can be inserted into the hub receiving hole when ejecting. The floppy disk is prevented from flying out from the floppy disk drive device by holding it in contact with the end surface of the head hole or by holding it in contact with the end surface of the head hole. This is an overview.

[Embodiments of the invention]

Embodiments of the invention shown in the drawings will be described below.

FIG. 1 shows a plan view, and the eject lever 2, which is placed horizontally with the eject button 1 positioned in front of the floppy disk drive device, slides forward and backward (in the horizontal direction in the figure). The disk case is held so that it can move freely, 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 ejector lever 2, and both sides of the housing 4 hang down to form hanging pieces 7, 7.
Rollers 6 located within guide portions 5, 5 having inclined end surfaces formed on the side plates 3, 3 of the ejector lever 2 are pivotally supported at two positions on both sides of the hanging pieces 7, 7, respectively.

Also, although not shown, one roller is pivotally supported on each of the hanging pieces 4, 4, and this roller is attached to a vertical groove (perpendicular to the plane of 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 ejector lever 2 moves forward and backward, the guide portions 5, 5 having the inclined portions,
The housing 4 is vertically movable.

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

FIG. 3 shows a disk case A of the floppy disk inserted into the storage part of the housing 4, a disk holder 11 that clamps the magnetic disk in this case, and a floppy disk that cooperates with the disk holder 11 to hold the floppy disk. The relationship between the disc case A and the hub receiver 13 to which the spindle 12 of the motor is connected is shown. A hub receiving hole 14 is provided, which is large enough to allow each of the two to be inserted, and a shutter that can be opened and closed faces from the inside at the front in the insertion direction, and when the shutter is opened, the head 15 is positioned to protect the internal magnetic disk. A hole 16 for the head is provided for making contact with the disk (see Fig. 2). The disk retainer 11, which is suspended via the shaft 18 and is rotatable via the bearing 18, is positioned along the shaft portion 17 at a lower position where its lower surface presses against the hub 19 of the disk, and at a lower position where the lower surface presses against the hub 19 of the disk. It is spaced apart from the hub 19 of the disk case A, and is movable up and down between an upper position below a horizontal line passing through the upper end of the disk case A, and is always biased toward the lower position by a spring 20. has been done.

In addition, 21 is the inserted disk case (second
This is a positioning pin inserted into the positioning hole 22 of A (a plan view is shown in the figure).

Next, the operation of the above will be explained.

First, the state shown in FIG. 1 and FIG.
Eject button 1 from a state where writing can be performed
If you push the eject lever 2 against the spring 23 by pressing , the bent piece 10 of the trigger lever 8 will be positioned within the notch 2b of the eject lever 2, so the trigger lever 8 will be moved counterclockwise by the biasing force. to hold the eject lever 2 in the push-in position.

On the other hand, by pushing the ejector lever 2, the housing 4 is moved upward relative to the ejector lever 2 by the rollers 6 on both sides thereof and the guide portion 5 of the ejector lever 2 where the rollers 6 are located. As a result, the disk holder 11 and spindle 1, which were holding the disk hub 19,
Since the two hub receivers 13 are separated from each other to release the grip, and the heads 15 are also separated by an appropriate mechanism, the disk case A can be taken out by hand. (Note that since the ejector lever 2 is held in the pushed-in position, the housing 4 is also held in the upper position.) In this case, the disk case A itself has a built-in spring for closing the shutter. In the state shown in FIGS. 1 and 3, the shutter is open and a biasing force is accumulated in this spring, and this accumulated biasing force is combined with the trigger lever 8. When the total biasing force of the spring 9 is less than a certain value, depending on the biasing force accumulated in those springs, the biasing force is such that the disc case A moves the disc holder 11 upward and jumps outward. is not accumulated, and therefore, the disk case A is in the fourth position where the edge of the hub receiving hole 14 of the disk case A is in contact with the disk retainer 11.
Since it is held in the state shown in the figure, all that is left to do is to perform a pull-out operation to move the disk holder 11 upward against the biasing force of the spring 20 and to take out the disk case A.

In addition, when taking out disk case A in the same way as above, if the biasing force of the spring built in disk case A is larger than that of the case described above, in other words, if the biasing force of the spring built in disk case A is When the sum of the force and the biasing force of the spring 9 of the trigger lever 8 is larger than the certain value, the edge of the hub receiving hole 14 of the disc case A is pushed out from the disc holder 11 by these biasing forces. As a result, the disk case A is further ejected, but the disk case A is provided with a hole 16 for inserting the head, and the position of the hole 16 for inserting the head is in the insertion/removal direction of the disk case A. Since the disc holder 11 that has come off the hub receiving hole 14 of the disk case A is located on the back side on the same line as the hub receiving hole 14, the disk holder 11 is located in the head insertion hole as shown in FIG. 16, and is held in contact with the edge of this head insertion hole 16, so that the disk case A is securely held by the disk holder 11 without flying outward. be.

Therefore, no matter what the magnitude of the biasing force of the spring built into the disc case of the floppy disc, the disc case will surely be held in contact with the disc holder, and the rest is up to the operator. It would be good if we could bring it out.

Note that the spring force in the spring in the disc case A is accumulated by, for example, engaging and pushing a protrusion of the housing 4 into an engaging portion for controlling the opening and closing of the shutter provided on the side end surface of the disc case. , by releasing the clamp of the magnetic disk in the disk case A, the disk case A is immediately ejected, but since this structure is well known, it is omitted here. Furthermore, if the disk case A is pushed in from the above-described removed state, the trigger lever 8 will be rotated clockwise by the front end surface of the disk case A, and the eject lever 2 will release its lock. As a result, the housing 4 is moved downward by the biasing force of a spring (not shown), and reaches the state shown in FIGS. 1 and 3.

〔Effect of the invention〕

By configuring this invention as described above,
Regardless of the biasing force of the spring built into the disk case, it is possible to always prevent the risk of the disk case completely popping out from the floppy disk drive device, resulting in high operational reliability and a simple configuration. Therefore, it has excellent effects such as being able to be manufactured at low cost.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view, Fig. 2 is a plan view showing the disk case, Fig. 3 is a schematic longitudinal sectional view of the one shown in Fig. 1, and Figs. 4 and 5 are the magnetic disk and disk holder inside the disk case. FIG. DESCRIPTION OF SYMBOLS 1... Eject button, 2... Eject lever, 2a... Surface part, 2b... Notch, 3... Side plate, 4...
Housing, 5... Slanted elongated hole, 6... Roller, 7... Drooping piece, 8... Trigger lever, 9, 20, 23... Spring, 10... Bending piece, 11... Disc holder, 12...
Spindle, 13... Hub holder, 14... Hole for hub holder, 15... Head, 16... Hole for head, 17
... shaft portion, 18 ... bearing, 19 ... hub, 21 ... positioning pin, 22 ... positioning hole, 24 ... support plate.

Claims (1)

[Claims] 1. 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 made smaller than the two holes, and , when the disk holder is released, the lower surface thereof is arranged to be lower than the upper surface of the disk case, and when the disk case is taken out, the disk holder is arranged so that it touches the edge of the hub receiving hole or the head hole. 1. A disk eject mechanism for a floppy disk drive device, wherein the disk eject mechanism holds the disk case by contacting one of the edges of the disk case.