JPH07320369A - Disc apparatus - Google Patents

Abstract

PURPOSE:To protect a head from a damage caused by an impact by guiding a mating means by the turn of a latching lever corresponding to the insertion operation of a disc cartridge to a position at which a mating part is mated with a recess. CONSTITUTION:When a disc cartridge 62 is pushed into the disc apparatus, the pushing part 13 of a latching lever 3 is pushed by the front end of the cartridge 62 and the latching lever 3 is turned clockwise against the actuating force of a spring. As the coil spring part is released with this process, a mating arm 4 is guided by the actuating force of the spring to a position at which the mating part 18 of the mating arm 4 is mated with the cemi-circular recess 43 of the disc cartridge 62 held by a holder 2. As a result, the mating part 18 is mated with the semi-circular recess 43 and, as a guide arm 19 touches a slant notch part 47 in this mating state, the mating arm 4 does not fall off from the disc cartridge 62.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device, and more particularly to a disk device having a latch lever that rotates in response to an operation of inserting or ejecting a disk cartridge.

[0002]

2. Description of the Related Art In recent years, an FDD (floppy disk drive) device known as a magnetic information recording / reproducing device has been downsized. FDD devices using a 3.5-inch floppy disk as a recording medium currently have a thickness of ½ inch to 1 inch. A major feature of the 3.5-inch floppy disk is that the recording medium is contained in a plastic hard case, and the hard case is provided with a window for exposing the recording medium and a shutter for closing the window. That is the point. When the 3.5-inch floppy disk is attached to or detached from the FDD device, the shutter is generally opened and closed by a shutter arm provided on the FDD device side.

FIG. 5 is a plan view showing an outline of an example of a disk loading / unloading mechanism of a conventional FDD device, and FIG. 6 is a perspective view showing an example of a disk loading / unloading mechanism of a conventional FDD device. As shown in both figures, the disc loading / unloading mechanism 50 generally includes a slider 51, a holder 52, and a latch lever 53.
It is composed of

The disk cartridge has a front bezel 5
4 is inserted through a disc insertion opening (not shown), the latch lever 53 comes into contact with the front end of the disc cartridge and pivots in the clockwise direction to lock the locking portion 55 provided at the rear end of the slider 51. Is released. Then, the slider 51 slides in the B direction by the urging force of the slider spring, and the holder 52 moves to the disc loading position.

Further, when the disc cartridge is inserted, the post 5 disposed at the right end portion of the shutter arm 56.
7 contacts the front end of the disk cartridge, the shutter arm 56 rotates counterclockwise against the urging force of the spring 58, and the shutter is pressed by the post 57 to open and hold the lid open. It

When ejecting the disc cartridge,
By pushing the eject button 59 in the A direction, the slider 51 slides in the A direction, the holder 52 moves to the unload position, and the disc cartridge is ejected by the urging force of the spring 58. Incidentally, 60 is a spring for urging the slider 51 in the discharging direction, and 61 is a cam groove for guiding the movement of the holder 52.

When the disc cartridge is ejected,
In order to prevent erroneous ejection of the disk cartridge and to perform stable ejection operation, the rotation of the latch lever and the rotation of the shutter arm are prevented until the holder moves to the unload position. However, in recent years, when strong vibration or shock is applied to the FDD device main body during the ejection operation, the disk cartridge is ejected halfway, and the head piece is damaged by the shutter.

Here, FIGS. 7, 8 and 9 are schematic views for explaining erroneous ejection of the disc cartridge.

FIG. 7A shows the disc cartridge 62 at the loading position. A positioning hole (not shown) on the back surface of the disk cartridge 62 engages with the positioning boss 63, and the turntable 65 supports a floppy disk (not shown). A head piece (not shown) disposed on the head carriage 66 is in contact with the floppy disk exposed by opening the shutter.

When the eject button is pushed from the state of FIG. 7 (A), the holder moves upward, and the disc cartridge 62 moves upward as shown in FIG. 7 (B). FIG. 7 (B)
Shows the state when the eject button is pushed in halfway.

When strong vibration or impact is applied to the FDD device body in the state shown in FIG. 7B, the disc cartridge 62 pops out incompletely and the shutter arm is opened, as shown in FIG. 7C. As a result, the shutter moves in the closing direction. However, since the eject button is not pushed completely, the headpiece 67 is not completely separated from the floppy disk.

Therefore, as shown in FIGS. 8 and 9, there is a problem that the shutter 68 hits the head piece 67 and damages the head piece 67.

[0013] In order to solve this problem
According to Japanese Patent Laid-Open No. 70, as shown in FIG. 10, a protrusion 70 is provided at the tip of a lock arm (also serving as a shutter arm) 69 that extends to the latch lever 53.
Is engaged with the shutter 68 by inserting it into the gap between the corners of the shutter 68, and the disc cartridge 62 will not move to the B cartridge even if strong vibration or impact is applied to the FDD device main body during the discharging operation.
A technique is disclosed in which the shutter arm is prevented from opening by popping out in the direction. According to this, the shutter 68 is held without closing until the eject button is completely pressed and the latch lever 53 is returned.

[0014]

However, in the above configuration in which the projection 70 is engaged with the shutter 68, the gap of the shutter 68 with which the projection 70 is engaged is only a few.
Since it is mm and the latch lever 53 is provided on the fixed chassis, the protrusion 63 must be extremely thin in order to allow the disc cartridge 62 to move up and down together with the holder. .

Further, since the protrusion 70 is engaged with the gap of the shutter 68 to regulate the movement of the shutter 68, all the force such as the urging force is applied to the protrusion 70. Therefore, when a large impact is applied while the protrusions 70 are engaged, the protrusions 70 may be broken or fall out. As a result, there is a problem that the shutter 68 and the head carriage are damaged. Furthermore, if the disc cartridge is suddenly inserted, the latching may be incomplete, and the disc cartridge cannot be loaded.

Therefore, an object of the present invention is to provide a disk device which solves the above problems.

[0017]

In order to solve the above problems, the present invention has the following configuration.

That is, in a disk device equipped with a holder for holding a disk cartridge containing a disk-shaped recording medium and a latch lever that rotates in response to the insertion / ejection operation of the disk cartridge, one end of the holder is hooked. And an engaging means having an engaging portion which is engageable with a semicircular recess provided on the bottom surface of the disk cartridge, and is engaged by rotation of a latch lever according to the insertion operation of the disk cartridge. Guides the engaging means to a position where the engaging portion engages with the concave portion, and moves the engaging means to a position where the engagement of the engaging portion with the concave portion is released by the rotation of the latch lever according to the ejecting operation of the disc cartridge. It is configured to include a guiding means for guiding.

[0019]

According to the present invention having the above-described structure, the engaging portion of the engaging means hooked at one end of the holder can be freely engaged with the semicircular concave portion provided on the bottom surface of the disk cartridge. Acts like. Further, the guiding means guides the engaging means to a position where the engaging portion engages with the concave portion by the rotation of the latch lever according to the inserting operation of the disc cartridge, and
Rotation of the latch lever according to the ejecting operation of the disc cartridge acts to guide the engaging means to a position where the engagement with the recess of the engaging portion is released.

[0020]

Embodiments of the present invention will now be described with reference to FIGS.

First, FIG. 4 is a bottom view of the disk cartridge. On the bottom of the disc cartridge 62,
Positioning holes 41, 42, semicircular recesses 43, 44, a write protection switch 45 are provided, and a chucking hub 46 is provided.
Is exposed. The shutter 68 can be opened and closed in the left and right directions in the drawing. In the figure, an oblique notch 47 is formed at the upper left corner. The oblique notch 47 is formed to detect an error in the insertion direction. The shape and dimensions of the disk cartridge 62 are standard (ISO / IEC / DIS 9529
-1), and the semicircular recesses 43, 44 and the oblique notch 47 are also defined by this.

In the present embodiment, the semi-circular recesses 43 and 44 defined by the standard are engaged with the above-mentioned engaging means to prevent erroneous ejection of the disc cartridge during the ejection operation.

Here, FIGS. 1 and 2 are three views showing an essential part of an FDD device which is a disk device according to an embodiment of the present invention. FIG. 1 shows an unloading state and FIG. 2 shows a loading state. Shows.

The disk device 1 is roughly composed of a holder 2,
It is composed of a slider, a latch lever 3, and an engaging arm 4 corresponding to the above-mentioned engaging means. Although the slider is not shown here for convenience of description, a cam groove that engages with a protrusion provided on the side portion of the holder 2 is formed obliquely with respect to the disc cartridge insertion direction. It has a general structure in which the holder 2 is urged by sliding in the disc cartridge insertion / ejection direction to vertically move the holder 2 to the loading position or the unloading position.

A shutter opening / closing arm 6 is arranged substantially at the center of the top plate 5 of the holder 2. A substantially elliptical hole 7 is formed near the left end of the shutter opening / closing arm 6.
The shutter opening / closing arm 6 is rotatably supported by the rotation support shaft 8 provided in the holder 2 engaging with the hole 7. One end of a spring 9 is hooked on the left end of the shutter opening / closing arm 6, and the other end of the spring 9 is attached to the top plate 5 of the holder 2.
It is hooked on a hooking portion 10 formed to project.

The spring 9 is pulled by a pulling force to rotate the support shaft 8.
The left end of the shutter opening / closing arm 6 is biased in the A direction with the fulcrum as a fulcrum. Therefore, the portion of the shutter opening / closing arm 6 on the right side of the rotation support shaft 8 is urged to rotate in the clockwise direction. The right end portion of the shutter opening / closing arm 6 is engaged with an arc-shaped guide hole 11 formed in the top plate portion 5.
A sliding pin 12 is provided at the right end of the shutter opening / closing arm 6.
Is erected.

When the sliding pin 12 is brought into sliding contact with the front end of the disc cartridge 62 as the disc cartridge 62 is inserted, the right end of the shutter opening / closing arm 6 rotates counterclockwise and the shutter 68 opens (leftward). Slide to.

The latch lever 3 includes a pressing portion 13 that is pressed against the disk cartridge 62 and a slider locking portion 14 that holds and holds the slider at the unload position.
And an arm-shaped lock arm portion (the above-mentioned guiding means) 15 that engages with the engaging arm 4 and guides it, are integrally formed. The latch lever 3 is biased by a spring member (not shown) in a counterclockwise direction about the rotation support shaft 16 as a rotation center.

The engaging arm 4 is made of a metal wire-like elastic member, and one end of the engaging arm 4 is locked to a projecting piece 16 formed at one end of the holder 2. That is, the engagement arm 4 is shown in FIG.
The coil spring portion 17 is formed at one end as shown in FIG.
Is formed, and the other end of the engaging portion 1 is bent into an "L" shape.
8 is formed. The coil spring portion 17 has a protruding piece 16.
Is loosely inserted and locked.

A guide bar 19 corresponding to a guide means bent in a "V" shape is formed substantially in the middle of the coil spring portion 17 and the engaging portion 18. The coil spring portion 17 and the guide bar 19 are connected by the inclined portion 20. The lock arm portion 15 of the latch lever 3 is engaged with the inclined portion 20.

In the unloading state shown in FIG. 1, the latch lever 3 is biased to rotate counterclockwise as described above, and is in the state of locking the slider. At this time,
The tip of the lock arm portion 15 is in contact with the inclined portion 20 near the coil spring portion 17, and the engaging portion 18 of the engaging arm 4 separates from the holder 2 against the biasing force of the coil spring portion 17. It is urged to move.

When the disc cartridge 62 is inserted in the direction A, the sliding pin 12 provided at the right end of the shutter arm 6 makes sliding contact with the front end of the disc cartridge 62, and the sliding pin 12 is pressed against the front end of the disc cartridge 62. This causes the shutter arm 6 to rotate counterclockwise. At this time, the shutter 68 is opened by the sliding pin 12.

When the disc cartridge 62 is further pushed, the pressing portion 13 of the latch lever 3 is pushed by the front end portion of the disc cartridge 62, and the latch lever 3 is pushed.
Rotates clockwise against the biasing force of the spring. The lock arm portion 15 rotates with the rotation of the latch lever 3, so that the tip end of the lock arm portion 15 moves toward the guide bar 19 of the inclined portion 20.

As a result, the coil spring portion 17 is opened, so that the engaging portion 18 of the engaging arm 4 is held in the holder 2 by the urging force of the disc cartridge 62.
The engaging arm 4 is guided so as to come to a position where the engaging arm 4 engages with the semicircular recess 43. When the engaging arm 4 is guided, the guide bar 19 is slidably contacted with the oblique notch 47 and the engaging portion 18 is guided so as to engage with the recess 43. As a result,
As shown in FIG. 4, the engaging portion 18 engages with the semicircular recess 43, and at this time, the lock arm portion 15 is separated from the engaging arm 4.

In this engaged state, since the guide bar 19 is in contact with the oblique cutout portion 47, the engaging arm 4 does not fall out of the disc cartridge 62, and the guide bar 19 is pressed in the A direction. Therefore, the engaging portion 18 does not disengage from the recess 43.

When the disc cartridge 62 is ejected, when an eject button (not shown) is pressed, the slider slides in the direction A, and a locking portion (not shown) arranged on the slider.
Slides on the sliding contact surface of the slider locking portion 14 of the latch lever 3. However, the latch lever 3 is not released until the eject button is completely pushed in, the engaging arm 4 is kept in the state of FIG. 2, and the engaging portion 18 engages with the semicircular recess 43. There is.

When the eject button is completely pushed in, the latch lever 3 is released, and the latch lever 3 rotates counterclockwise. At this time, the slider locking portion 14 of the latch lever 3 locks the locking portion provided on the slider, and the lock arm portion 15 causes the locking arm portion 15 to tilt the inclined portion 2 of the engaging arm 4.
0, and the inclined portion 20 is pressed in the A direction.

When the inclined portion 20 is pressed, the engaging arm 4
Is guided in a direction in which the engagement of the engaging portion 18 with the recess 43 is released. As a result, the engaging portion 18 is separated from the recess 43, and the disc cartridge 62 is urged by the urging force of the spring 9.
Is discharged.

As described above, according to this embodiment, the latch lever 3 is not released until the eject button is completely pushed, and the engaging arm 4 is guided in accordance with the rotation of the latch lever 3. Therefore, the engaging portion 18 of the engaging arm 4 does not disengage from the recesses 43 and 44 on the bottom surface of the disc cartridge 62 until the latch lever 3 is released. Therefore, the disc cartridge 62 is securely held until it reaches the unload position.

Further, since the engaging arm 4 is made of an elastic member made of metal, even if a large impact is applied from the outside during the discharging operation, the elastic force of the engaging arm 4 ensures a fit and engagement. The joint 18 does not come off the recesses 43 and 44.

Further, since the standardized portions (recesses 43, 44) of the disc cartridge 62 are engaged by the engaging portions 18, the engagement is made stable without any variation and never comes off. .

Further, since the engagement arm 4 is provided independently of the shutter arm 6 which is the shutter opening / closing mechanism, it does not affect the shutter 68. Therefore, the shutter 68 is securely held by the shutter arm 6 to prevent the shutter 68 from being erroneously closed.
Does not damage the headpiece.

[0043]

As described above, according to the present invention, the engaging portion of the engaging means hooked at one end of the holder can be freely engaged with the semicircular concave portion provided on the bottom surface of the disk cartridge. The guiding means guides the engaging means to a position where the engaging portion engages with the recess by the rotation of the latch lever according to the inserting operation of the disc cartridge, and the rotation of the latch lever according to the ejecting operation of the disc cartridge. The engagement means is guided to a position where the engagement with the recess of the engagement portion is released by the movement. That is, since the guiding means is operated by the rotation of the latch lever, the engaging portion and the concave portion are not disengaged from each other until the latch lever is locked at the ejecting position when the disc cartridge is ejected. There is a feature that the disk cartridge can be securely fixed and held on the way, and the head is not damaged by erroneous ejection due to impact. In addition, it is advantageous in terms of cost because only the addition of the engaging arm is required in terms of the configuration.

[Brief description of drawings]

FIG. 1 is a three-view drawing showing a main part of an embodiment of the present invention.

FIG. 2 is a three-view drawing showing a main part of an embodiment of the present invention.

FIG. 3 is a diagram showing an engagement arm 4 according to an embodiment of the present invention.

FIG. 4 is a bottom view of the disc cartridge.

FIG. 5 is a plan view showing an example of a disc loading / unloading mechanism of a conventional FDD device.

FIG. 6 is a perspective view showing an example of a disc loading / unloading mechanism of a conventional FDD device.

FIG. 7 is a diagram for explaining erroneous ejection of a disc cartridge.

FIG. 8 is a diagram for explaining erroneous ejection of a disc cartridge.

FIG. 9 is a diagram for explaining erroneous ejection of a disc cartridge.

FIG. 10 is a diagram showing a main part of an example of a disc loading / unloading mechanism of a conventional FDD device.

[Explanation of symbols]

 1 Disk Device 2,52 Holder 3,53 Latch Lever 4 Engaging Arm 15 Lock Arm Part 18 Engaging Part 43,44 Semicircular Recess 62 Disk Cartridge

Claims (4)

[Claims] 1. A disk device comprising: a holder for holding a disk cartridge containing a disk-shaped recording medium; and a latch lever that rotates in response to an inserting / ejecting operation of the disk cartridge. By engaging means having an engaging portion that is hooked and is engageable with a semi-recessed portion provided on the bottom surface of the disk cartridge, and rotation of the latch lever according to the insertion operation of the disk cartridge. The engaging portion is guided to a position where the engaging portion engages with the concave portion, and the latch lever is rotated in response to the ejecting operation of the disc cartridge so that the engaging portion engages with the concave portion. A disk device comprising guide means for guiding the engaging means to a released position. 2. The disk device according to claim 1, wherein the guiding means is an arm-shaped member formed integrally with the latch lever. 3. The disk device according to claim 1, wherein the engaging means is an elastic member having a coil spring hooked at one end of the holder and formed at one end thereof. 4. When the elastic member is guided by the rotation of the latch lever in response to the inserting operation of the disc cartridge, the elastic member is slidably contacted with a corner oblique cutout portion of the disc cartridge so that the engaging portion is formed. 4. The disk device according to claim 3, further comprising guide means for guiding the engaging means so as to engage with the recess.