JPS63298764A - Button lock mechanism for disk device - Google Patents

Abstract

PURPOSE:To prevent damages to a lock member, its support member and drive means by buffering or blocking an external force fed to a button in the lock state from being delivered to the support and drive means of the lock member. CONSTITUTION:A movable lock member 14 engaging with a operation drive member 4 of a disk ejecting mechanism driven by the operation of a button 3 to apply locking, a drive means to drive the lock member 14 thereby engaging it with an operation drive member 4, and a means buffering or blocking an external force applied to the button 3 in the lock state from being delivered to the support member 15 of the lock member 14 and the drive means, are provided. In exerting a force to operate the operation button 3 in the lock state, the delivery of the force to the lock member 14, the support 15 and the drive means is buffered or blocked. Thus, damages to the lock member, its support member and the drive means or the like are prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a button for a disc device that locks an operation button for ejecting a disc from a disc device that records or reproduces information on a disc as a rotating recording medium. This relates to a locking mechanism.

[Prior Art] As the disk device described in -1-, for example, there is a floppy disk drive device (hereinafter referred to as FDD) that records or reproduces information on a floppy disk as a flexible rotating magnetic recording medium.

For example, in the case of a 3.5-inch FDD, the disk is rotatably housed in a cassette, and the cassette is used together. The disk is loaded into the FDD by inserting the cassette together from a disk insertion slot provided on the front panel of the FDD.

The disk is ejected from the FDD by operating an eject button provided on the front panel.

Many FDDs have a button lock mechanism that locks the eject button to prevent inconveniences such as accidentally operating the eject button during recording and playback, causing the disk to be ejected by mistake and data being destroyed. structure has been adopted.

The structure of the button lock mechanism is such that a slide plate, which is the operation drive member for the disk ejection mechanism and head load mechanism, which are driven by the operation of the eject button, is locked by a movable lock member driven by a drive means such as a solenoid. It has become immovable.

[Problems to be Solved by the Invention] However, according to the conventional FDD button lock mechanism, when the FDD user applies force to operate the eject button in the locked state, the force is applied almost directly to the slide plate. The signal is transmitted to the locking member and driving means such as a solenoid through the . Therefore, if the above force is excessive, the force will concentrate on the support part such as the shaft of the lock member that movably supports the lock member, and the support part or the support member supporting it will be damaged. There is a risk that There is also a risk that driving means such as solenoids may be damaged.

[Means for Solving the Problems] In order to solve these problems, the present invention provides a method for ejecting a disc from a disc device that records or reproduces information on a disc as a rotating recording medium. A button locking mechanism of a disk device that locks an operation button includes a movable locking member that engages with an operation drive member of a disk ejection mechanism driven by the operation of the button to perform the locking, and a movable locking member that locks the operation button. A structure comprising a drive means for engaging the operation drive member, and a means for buffering or preventing an external force applied to the button in the locked state from being transmitted to the support portion of the lock member and the drive means. Adopted.

[Function] According to this structure, when the user of the disk device applies force to operate the operation button in the locked state, the force is transmitted to the support portion of the lock member and the drive means. is buffered or blocked by the buffering or blocking means described above.

Damage to the lock member, its support member, drive means, etc. can be prevented.

[Embodiments] Details of embodiments of the present invention will be described below with reference to the attached drawings.

First, FIGS. 1 to 3 illustrate the structure of a button lock mechanism and a herad load mechanism in a 3-inch or 5-inch FDD according to an embodiment of the present invention. Figure 1 shows an FDD mainly showing the structure of the slide plate and its surroundings, which act as operating members for the head loading mechanism and disk ejecting mechanism.
It is a top view of the lower part. Further, FIG. 2 is a plan view of the main parts of the FDD showing the structures of the helad load mechanism and the button lock mechanism, and FIG. 3 is a side view showing a part of the same main parts in a broken state.

In FIG. 1, the reference numeral l indicates a base that supports the entire FDD, and a front panel 2 is fixed to the front end of the base 1. A disc insertion slot (not shown) is formed in the front panel 2, and a disc cassette containing discs is inserted into the FDD through this insertion slot. A cassette guide 19, only a portion of which is shown in FIG. 2, is arranged behind the disc insertion slot, and the inserted disc cassette is slidably guided to the loading position by this cassette guide 19 and held. It has become so. The cassette/cassette guide 19 is provided to be movable up and down, and is biased downward by a spring (not shown). Rollers indicated by reference numeral 20 in FIG. 3 are provided on both outer sides of the rear end of the cassette guide 19. As shown in FIG.

The roller 20 is a support member 2 fixed to the base 1 of the FDD.
It is slidably fitted into a groove 21a formed in 1,
This allows the cassette guide 19 to be guided up and down.

On the other hand, at the bottom of the FDD shown in FIG.
It is located opposite. An eject button 3 for ejecting a disk cassette loosely fitted into the front panel 2 is coupled to the slide plate 4, and the slide plate 4 is operated via the eject button 3.

The slide plate 4 is formed in a U-shape as a whole, and has a notch formed in the center of the FDD to avoid a spindle hub 5, which is a disk holding portion of a spindle motor that rotationally drives a disk (not shown). There is. The slide plate 4 has elongated holes 4a formed at five locations, and positioning pins 6 for positioning the disk cassette.
6. Disc cassette slide plate guide pin 7.
7 and pin 8 in a slidable manner as shown by arrow A.

It is provided for sliding movement in the B direction, that is, the insertion and ejection direction of the disk cassette. Further, the slide plate 4 is biased by a spring 9.9 in the direction of arrow B, that is, in the direction of ejecting the disk cassette.

On the other hand, the eject button 3 on the left end of the slide plate 4 in FIG. for,
An L-shaped hole 4b is formed, and a base l near the hole 4b is formed.
A lock 8-10 is provided on the top. Locking lever 1
0 is provided so as to be rotatable about the pin 11,
It is biased clockwise by a spring (not shown) as shown by the arrow in FIG. A pin 12 is implanted in the lower surface of the tip of one arm of the L-shaped lever 10 so as to engage with the hole 4b, and a pin 13 is implanted in the upper surface of the tip of the other arm. has been planted.

When the eject button 3 is pressed in the direction A and the slide plate 4 is moved in the direction A from the state shown in FIG. The pin 12 enters the bent part on the right side of the hole 4b, and when the eject button 3 is released, the slide plate 4 is released by the tension of the spring 9.
tries to move in direction B, but the edge of the above-mentioned bent portion of the hole 4b abuts against the pin 12 and is locked. This state is the initial state.

When inserting a disk cassette, when almost all of the disk cassette is inserted, the cassette will hold the pin 13.
is pressed, and the locking lever lO is rotated counterclockwise against the force of a spring (not shown). And pin 12 is in hole 4b
The slide plate 4 is pulled out from the bent portion on the right side, and the locking by the pin 12 is released, and the slide plate 4 is moved in the direction of arrow B to the position shown in the figure by the tensile force of the spring 9.

On the other hand, the edges of the slide plate on both the left and right sides in FIG. 1 are raised as side plates. At the tip of the side plate 4C on the right side in FIG.
A claw 4d for pushing up is formed. Also side plate 4
At C, an inclined long groove 4e is formed near the claw 4d as shown in FIGS. 3 to 6. The roller 20 of the cassette guide 19 mentioned earlier is fitted into this long groove 4e, and as will be described later, the roller 20 is pushed up through the long groove 4e with the movement of the slide plate 4, and the cassette guide 19 It is designed to be pushed up.

Furthermore, the claw 4 at the tip of the slide plate 4 on the right side in FIG.
Near the inner side of d are claws 4f and 4g for locking the slide plate 4, that is, locking the eject button 3.
is formed. The tips of the claws 4f and 4g are bent into an L shape.

There is a claw 4f near the front of the claws 4f and 4g.

A lock plate 14 for locking the slide plate 4 and locking the eject button 3 by engaging with the slide plate 4g.
is provided. The tip of the lock plate 14 that engages with the claws 4f and 4g is bent into an L-shape. The lock plate 14 is supported by a lock plate support 15 fixed on the base l with screws 16. That is, the projecting pieces 14b and 14c formed on both sides of the rear end of the lock plate 14 are respectively formed into side plates 15a and 15a that stand up on both sides of the rear end of the lock plate support 15 as shown in FIG. long hole 1
5b with a clearance, the lock plate 14 is supported substantially horizontally on the base 1 and is supported so as to be rotatable in the vertical direction within a predetermined angular range. The lock plate 14 is urged upward by a coil spring 17 shown in FIG. The spring force of this coil spring 17 is the same as that of the head load arm 3, which will be described later.
This is set to be smaller than the sum of the spring force of the spring 36 which urges the head arm 4 and the spring force of the spring 39 which urges the head arm 37.

Further, through the hole 14a of the lock plate 14, the reference numeral 1 in FIG.
A buffer shaft indicated by 8 is implanted in the base 1. This buffer shaft 1
8, the lock plate 14 is connected to the claw 4f of the slide plate 4, 4
g and locks the slide plate 4, when force is applied to the lock plate 14 from the slide plate 4 side, the force is stopped and the force is applied to the support part of the lock plate 14. This is to prevent and buffer the

Next, as shown in FIGS. 2 and 3, a solenoid 32 is provided near the back side of the lock plate 14 as a common driving source for the head load mechanism and the button lock mechanism. The plunger 33, which is the drive shaft of the solenoid 32, is rotated in the direction of arrow C protruding from the solenoid 32 by a spring (not shown) attached to the solenoid.
When energized and excited, it is attracted and driven in the D direction.

Further, above the lock plate 14, a solenoid 32 drives the lock plate 14 and a herad load arm 34, which will be described later.
An H plate 22 is provided as a driving member for operating the.

The H plate 22 is formed into a substantially H shape when viewed from above.
A stopper 24 that comes into contact with the plunger 33 is protruded from a bridging portion in the middle. And H plate 22
is rotatably provided on the lock plate 14 about a support shaft 23, and rotatably supports the first to third rollers 25 to 27.

Among these, the first roller 25 is arranged so as to be able to come into contact with the pawl 4d of the slide plate 4 in accordance with the movement of the slide plate 4 in the directions A and B, as will be described later. In addition, the second roller 26 moves against the lock plate 14 as the H plate 22 rotates.
It is arranged so that it can come into contact with and press it.

Next, the third roller 27 moves the adjustment arm 2 against the H plate 22.
It is supported in a height-adjustable manner via 8. Adjustment arm 2
8 is rotatably attached to the H plate 22 via a pin 29, and is biased clockwise in FIG. 3 by a spring 30. An adjustment screw 31 is screwed into the adjustment arm 28, and this 2il adjustment screw 31 is an adjustment screw 3 arranged so as to come into contact with the end surface of the H plate 22.
By turning 1, the adjustment arm 28 will protrude to the lower side,
The length of the adjustment screw 31 that contacts the H plate 22 changes, the adjustment arm 28 is rotated clockwise or counterclockwise relative to the H plate 22, and the height of the third roller 27 relative to the H plate 22 is adjusted. can be adjusted. and third roller 2
7 is arranged so as to come into contact with the lower surface of a convex portion 34a formed on the head load arm, indicated by reference numeral 34 in FIG.

The head load arm 34 is an operating or driving member for moving the magnetic head close to or away from the disk. Forced. The tip of the head load arm 34 is arranged so as to come into contact with the lower surface of a protrusion 37a formed on the head arm, indicated by reference numeral 37.

The head arm 37 supports a magnetic head (not shown) for recording and reproducing on the upper surface of the disk on the lower surface of its tip, and is provided so as to be rotatable in the vertical direction on a head carriage 38 that transports the magnetic head. Further, the head arm 37 is urged downward by a spring 39, that is, in a direction closer to the disk.

The head carriage 38 is provided with an arm (not shown) facing the helad arm 37 and supporting a magnetic head (not shown) that performs recording and reproduction on the lower surface of the disk. The upper and lower magnetic heads are arranged to face each other. The head carriage 38 is moved in the directions of arrows E and F along the radial direction of the disk (not shown) by a driving means (not shown) to transport the magnetic head to an arbitrary track position on the disk.

In addition, in the above structure, the plunger 33 of the solenoid 32
The spring force of a spring (not shown) that urges the head arm 37 to protrude in the direction of arrow C is the spring force of the spring 39
The spring force is set to be larger than the sum of the spring force of the spring 36 and the spring force of the spring 36 that biases the head load arm 34.

Next, the operation of the helad load mechanism and button lock mechanism of the FDD of this embodiment having the following structure will be described below with reference to Figure 0'Si and Figures 4 to 6.

FIG. 4 shows the state of the H plate periphery, which is the main part of both mechanisms, in the initial state, that is, in the standby state before inserting the disk cassette. In this state, before that, the eject button 3 in FIG. 1 for ejecting the disk cassette is pushed in the direction of arrow A, the slide plate 4 is pushed in the direction of A, and the slide plate 4 is moved by the operation of the locking lever 10 mentioned above. It is locked in the position shown in FIG. The claw 4d of the slide plate 4 pushes the roller 25 through its inclination, so that the H plate 22 is in an upwardly rotated state. Along with this, the head load arm 34 is also pushed up via the roller 27, and the head arm 37 is pushed upward to the position where the magnetic head (not shown) that performs recording and reproduction on the surface of the disk can come into contact with the disk. It is moved away to the evacuation position. Further, the second roller 26 of the H plate 22 is spaced apart above the lock plate 14.

The lock plate 14 is thus in a state of being rotated upward by the bias of the coil spring 17. The claws 4f and 4g of the slide plate 4 are not engaged with the lock plate 14 and are recessed below it. Further, the row 220 of the cassette guide 19 is pushed up via the slope of the length ill 4 e of the slide plate 4, and thereby the id 19 of the cassette is also pushed up. Note that the solenoid 32 is not energized, and the plunger 33 is in a state of being protruded in the direction of arrow C by the bias of a spring (not shown).

Next, when a disk cassette (not shown) is inserted from this state to the loading position in the FDD, the disk cassette presses the pin 13 shown in FIG.
By rotating 0 counterclockwise, the locking lever l
The slide plate 4 is disengaged from the slide plate 4 by the spring 9, and the slide plate 4 is moved in the direction of the arrow B to the position shown in FIG. 5 by the biasing force of the spring 9. Since the roller 25 is no longer held by the claw 4d of the spindle motor 4, the H plate 2 is pushed through the roller 27 by the pressing force of the head load arm 34 due to the urging force of the spring 36 of the bed load arm 34 and the spring 39 of the helad arm 37.
2 is rotated downward. Then, the stopper 24 comes into contact with the plunger 32, and due to the large spring force of the solenoid 32 that biases the plunger 32 as described above, the H plate 2
2 is stopped at the position shown. With this operation, the head load arm 34 descends from the position shown in PIS 4 to the position shown in FIG. 5. In the state shown in FIG. is in a state of

Also, in the state shown in FIG. 5, the second roller 26 is still attached to the lock plate 1.
4, the lock plate 14 is in an upwardly rotated state and is not engaged with the claws 4f and 4g of the slide plate 4.

As the slide plate 4 moves in the direction of arrow B, the roller 20 is pushed down via the slope of the long groove 4e.
Cassette guide 19 is pushed down. The disk cassette is lowered by the lowering of the cassette guide 19, and as shown in FIG. By being pressed against the guide 19, the disc cassette is positioned to the recording/reproduction position and is mounted.

Next, when the motor-on signal is turned on from this state, the spindle motor for driving the rotation of the disk is rotationally driven, and the disk is chucked and held on the spindle hub 5 of FIG. 1 by a chucking mechanism (not shown) and rotated. dynamically driven.

In this embodiment, it is assumed that the solenoid 32 is energized by turning on this motor-on signal. Due to this energization, the plunger 33 of the solenoid 32 is attracted in the direction of the arrow as shown in FIG. 6 against a spring (not shown). Accordingly, the head load arm 34 rotates the H plate 22 downward against the coil spring 17 under the bias of the spring 36, and also descends. As a result, the head arm 37 is lowered, and the magnetic head for the upper surface of the disk is moved to the recording/reproducing position where it contacts the disk. Further, as the H plate 22 rotates downward, the second roller 26 pushes down the lock plate 14 and rotates it downward. The tip of the lock plate 14 engages with the bent tips of the claws 4f and 4g of the slide plate 4.

In this way, recording and reproducing are enabled, and the slide plate 4 becomes unable to move in the direction of arrow A due to the engagement of the lock plate 14 with the claws 4f and 4g. That is, the first
Even if the eject button 3 shown in the figure is pushed in the direction A, it does not move, the eject button 3 is locked, and a state 7L occurs in which the disk cassette cannot be ejected by operating the eject button 3.

After that, a recording/reproducing operation is performed. During the recording/reproducing operation, the motor-on signal is turned on, so that the solenoid 32 is continuously energized, and the state shown in FIG. 6 is maintained.

Next, when the recording/reproducing operation is completed, the motor-on signal is turned off, and the solenoid 32 is de-energized, and the plunger 33 is moved to the C position by a spring (not shown) of the solenoid 32.
It is projected in the direction S, thereby returning to the state shown in FIG. That is, the H plate 22 is rotated upward and pushes up the head load arm 34 via the third roller 27, and the head load arm 34 pushes up the helad arm 37 to separate the magnetic head for top surface recording/reproduction from the disk. Further, as the second roller 26 moves away from the lock plate 14, the lock plate 14 rotates upward under the force of the coil spring 17.
The lock plate 14 and the claws 4f and 4g of the slide plate 4 are disengaged from each other. As a result, the slide plate 4 is moved to the arrow A
It becomes possible to move in this direction, and the aforementioned lock is released.

Next, by pressing the eject button 3 in the direction A in Fig. 1 and moving the slide plate 4 in the same direction, the m4
Return to the state shown in the figure. When the claw 4d of the slide plate 4 pushes up the roller 25, the H plate 22 is further rotated upward, and the head load arm 34 is further pushed up via the roller 27.

The head load arm 34 pushes the helad arm 37, and the magnetic head for recording/reproducing on the upper surface of the second leg is further moved away from and retracted above the disk.

Also, by moving the slide plate 4 in the entry direction, the long groove 4e
The roller 20 is pushed up through the inclination, and the cassette guide 19 is pushed up. This lifts the disk cassette, disengaging the locating pin 6.6 and releasing the cassette hold. The cassette is then pushed in the direction B and ejected by the operation of an ejection lever (not shown).

By the way, according to this embodiment as described above, the user of the FDD presses the eject button 3 in FIG. 1 in the locked state shown in FIG.
When the user presses in the A direction to operate the
The transmission to the portion 4c, the lock plate support 15, and the solenoid 32 is buffered or inhibited via the buffer shaft 18 or roller 25.

That is, when the eject button 3 is pressed in the direction A in the locked state, the slide plate 4 first moves slightly in the direction A, that is, to the left in FIG. and press it. However, the inner edge of the hole 14a of the lock plate 14 is connected to the buffer shaft 18.
The lock plate 14 comes into contact with the 117 shaft 18, and the lock plate 14 is stopped by the shaft 18. The projections 14b, 14c of the lock plate 14 are configured so as not to come into contact with the inner edge of the elongated hole 15b of the lock plate support 15 at the left end in FIG. In this way, the lock plate 14 is removed via the eject button 3.
The force applied to the buffer shaft 18 is received by the buffer shaft 18, and the force is transferred to the protruding piece 14b.

14c and the lock plate support 15 can be prevented.

In addition, since the lock plate 14 is supported by the buffer shaft 18 and hardly moves to the left, the above-mentioned pressing force is hardly transmitted to the solenoid 32 via the H plate 22, and even if the lock plate 14 is moved to the left Even if the lock plate 14 and the H plate 22 move slightly in this direction, the rotation of the rotatable roller 25 interposed between the lock plate 14 and the H plate 22 will buffer the pressing force from being transmitted to the solenoid 32 via the H plate 22. Or inhibited IJ: to be done.

In this way, according to this embodiment, the pressing force of L can be buffered or inhibited via the buffer shaft 18 or the roller 25, so that the row 2 plate 14, the row 7 plate support 15, the solenoid 32, etc. Damage can be prevented and the durability of the FDD can be improved.

[Effect of Emission 1] As is clear from the explanations below, according to the present invention, there is an operation button for ejecting a disc from a disc mount that records or reproduces information on a disc as a rotating recording medium. In a button locking mechanism of a disk device, the button locking mechanism includes a movable locking member that engages with an operation drive member of a disk ejection mechanism driven by the operation of the button to perform the locking, and a movable locking member that performs the locking by driving the locking member to perform the operation. A driving means for engaging the driving member, and a buffer for or preventing an external force applied to the button in the locked state from being transmitted to the support portion of the locking member and the driving means.
This structure prevents damage to the locking member, its supporting member, and the driving means mentioned above. This provides an excellent effect of increasing the durability of the disk drive.

[Brief explanation of the drawing]

The figure is for explaining the structure and operation of the helad load mechanism and button lock mechanism of the FDD according to the embodiment of the present invention.
Fig. 1 is a plan view of the lower part of the FDD mainly explaining the structure of the slide plate and its surroundings, Fig. 2 is a plan view of the main parts of the FDD related to both mechanisms listed in L, and Fig. 3 is a plan view of the main parts of the FDD. A side view, partially shown in a broken state, and FIGS. 4 to 6 are explanatory views of the operations of both mechanisms, respectively. 3... Eject button 4... Slide plate lO... Locking lever 14... Lock plate 18...
・Buffer shaft 19...Cassette guide 22...
H plate 25-27...Roller 28...Adjustment arm 32...Solenoid 34...Head load arm 37...Head arm 38...Head carriage Fig. 1

Claims (1)

[Claims] In a button lock mechanism of a disk device that locks an operation button for ejecting the disk from a disk device that records or reproduces information on a disk as a rotating recording medium, the operation of the disk ejection mechanism that is driven by the operation of the button. a movable locking member that engages with the driving member to perform the locking; a driving means that drives the locking member to engage the operating driving member; and an external force applied to the button in the locked state that A button locking mechanism for a disk device, characterized in that the button locking mechanism for a disk device is provided with a means for buffering or preventing transmission of power to a support portion of the member and the driving means.