JPH03283049A - Disk driving device - Google Patents

Abstract

PURPOSE:To improve the timing accuracy of release of lock of a holder and fitting of a disk cartridge to an engagement slot by providing a release part engaging with an eject lever and skidding it in the loading direction so as to release the press contact with a tip of the disk cartridge when the eject lever is turned. CONSTITUTION:A receiver 13 with a tip of a disk cartridge 3 pressed into contact therewith, a press contact part 13f in press contact with a press contact part 15a of a lock lever 15 and a long hole 13b with a support shaft 14 penetrated therethrough and engaged with an interlocking arm 15c of a lock lever 15 are provided to one end of an eject lever 13. An energizing means 14 energizes the eject lever 13 in the ejecting direction. A release part 54e is engaged with the eject lever 13 when the eject lever 13 is turned to skid it in the loading direction thereby releasing the press contact with the tip of the disk cartridge 3. Thus, the timing accuracy of release of lock of the holder and fitting of the disk cartridge to the engagement slot is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk drive device for recording/reproducing information on/from an information recording medium formed in a disk shape.

[Conventional technology]

Disk drives are widely used as external storage devices for information processing devices such as computers and word processors. One of these information processing devices is called a still video floppy disk drive device for recording/reproducing still image signals. This disk drive device is installed in a still video floppy camera and records image information on the still video floppy disk by operations similar to those of a camera device using photosensitive film.

As an example of this type of disk drive device,
There is one disclosed in Japanese Patent No. 57667. In this disk drive device, a holder that holds a disk cartridge containing a magnetic recording medium (hereinafter referred to as a disk) is pivotably supported at one end on a mounting board equipped with a rotary table, and the disk cartridge After inserting the disc into the holder, the holder is rotated toward the mounting board to load the disc in the disc cartridge onto the rotary table.

This method is also called the top-loading method, and since the cassette holder is opened as a lid, there is a risk of dust entering between the open cassette holders and causing various problems when inserting or removing a disk cartridge. .

On the other hand, a method known as the front loading method, in which a disk cartridge is inserted and loaded from the disk cartridge insertion slot formed on the front plate of the disk drive device, is also known, but ultra-small devices are It was not adopted because of its large external dimensions.

From this point of view, the present applicant proposed a front-loading type disk drive device that can be miniaturized as U.S. Pat. No. 61-36317.

This conventional example will be explained based on FIGS. 2 to 9.

2 to 5 are a plan view, a front view, a rear view, and a left side view of a still video floppy drive device (hereinafter referred to as an SVF device) according to a conventional example, and FIG. 6 shows an SVF device in a loaded state. A plan view of the device, Fig. 7 is a right side view of the same, Fig. 8
The figure is a plan view showing the internal structure of the SVF device with the holder removed, and FIG. 9 is a plan view of the disk cartridge used.

In FIGS. 2 to 5 above, the SVF device has a frame 1
, a slide plate 2 that can slide vertically in FIG. The disc is mainly composed of a carriage transport mechanism 7 that transports the disc in the radial direction, a turntable 8 on which the disc is placed, and a motor 9 that rotationally drives the turntable 8.

As shown in FIG. 9, a disk 30 as a magnetic recording medium rotationally driven by this disk drive device is housed in a hard case 31 to form a disk cartridge 3, and is opened from an opening 32 in the center. The hub 33 of the disk 30 is exposed. This case 31
A shutter 34 made of a thin metal plate is slidably attached to the head insertion port 35 to close and open the head insertion port 35.

The frame body 1 is formed by folding a metal plate into a substantially U-shaped cross section, and the side plate 16 has one part as shown in FIG.
7 has two guide grooves 1 as shown in Fig. 5.
8, 19, and 20 are kerfed. These guide grooves 1
8, 19, and 20 are formed in an abbreviated shape, and each has a horizontal portion parallel to the bottom plate 1a of the frame 1 and a vertical portion perpendicular to the bottom plate 1a. In addition, the side plate 17 is provided with a slide plate 2 on the disk cartridge insertion side A as shown in FIG.
A long hole-shaped guide groove 43 is formed from which the operating lever 36 for performing a forward slide operation projects.

A front plate 45 is attached to the opening of the frame 1 toward the disk cartridge insertion side.

As shown in FIG. 3, the front plate 45 has a disk cartridge insertion opening 46 formed at the upper side, and a door 47 that closes the disk cartridge insertion opening 46 when the disk cartridge 3 is not inserted is located at the upper part of the insertion opening 46. A shutter is rotatably supported on the back surface in a state where it is always biased in the closing direction, and a shutter that slides along the front plate 45 is disposed on the lower back surface.

The shutter is supported at one end of each of the pair of levers and is always biased in the opening direction by a spring, and closes the disk cartridge insertion opening 46 instead of the door 47 when loading the disk cartridge. .

Further, a height adjustment bin 1t is provided on the bottom plate 1a of the frame pair 1, and comes into contact with a base end of a pad 40a portion of a stabilizing plate 40, which will be described later, to adjust the height of the pad 40a. This height adjustment bin 1t is inserted into the height adjustment bin 1t from the back side of the bottom plate 1a.
It is set so that it can be done by rotating the threaded part of.

The slide plate 2 is located on the bottom plate 1a side of the frame l and is constantly biased by a spring (not shown) in the disk cartridge insertion direction (arrow B direction), that is, in the opposite disk cartridge insertion side Q. Guide groove 18.19.2 of side plate 16.17 of frame 1
04: Correspondingly, a cam groove (not shown) is formed. These cam grooves have an inclined part that slopes downward toward the disk cartridge insertion side A, a vertical part on the upper side (on the scale plate la side), and a horizontal part on the lower side (on the bottom plate la side). The protrusions 21, 22.2 protrude from the side of the holder 4.
3 are connected to the guide grooves 1B, 19.3 through these cam grooves.
20 respectively. Although not particularly shown in the drawings, this slide plate 2 is secured to the upper surface by a retaining member such as a ring or a speed washer, which is loosely inserted into a pin provided upright on the upper surface of the bottom plate 1a of the frame 1. It is attached so as to be slidable in a direction parallel to the direction in which the disk cartridge 3 is inserted and ejected.

As shown in FIGS. 2 and 4, the holder 4 has holding portions 53 for the disk cartridge 3 having a U-shaped cross section on both sides when viewed from the disk cartridge insertion side A, and both holding portions 53 on the scale plate side. A connecting upper surface plate 54 is provided.

As shown in FIGS. 5 and 6, a spring piece 57 that supports the protrusion 21 is suspended from the side surface 55 of the holder 4 on the side plate 16 side, and the protrusion 22.
23 is attached, and an engagement lever 58 whose tip engages with an engagement groove 38 formed on the side surface of the case 31 of the disk cartridge 3 is provided. The top plate 54 of the holder 4 has an insertion opening 59 into which the pulse generation sensor 39 is inserted, and a pad insertion opening 60 into which the pad 408 of the stabilizing plate 40 serving as a height position regulating means for the disk 30 is inserted. A support plate 61 for supporting the pulse generation sensor 39 is attached near the insertion port 59, and a shutter closing spring 67 made of a wire spring is attached to the side surface 55.

The stabilizing plate 40 is pivotably supported via a screw 62 between the stabilizing plate mounting portion 1m and In provided on the back plate 1e on the opposite disk cartridge insertion side Q of the pad insertion opening 60 of the frame 1. A coil spring 6 is wound around the outer periphery of the screw 62.
3, the frame body 1 is always urged toward the bottom plate 1a. Further, an eject lever 66 and a lock lever 29 are attached to a support shaft 'Q' on the side Q opposite to the disk cartridge insertion side of the frame l.
They are each swingably attached via 66b. When the disk cartridge 3 is unloaded, the stabilizing plate 40 is pushed up by the push-up portion 4p on the upper surface of the holder 4 to a height that does not extend beyond the top end of the side plate 16, 17 of the frame l, and the pad 40a
When loading or unloading the disc cartridge, the disc 30 is retracted from the disc cartridge, and during loading, it comes into contact with the upstream side of the magnetic head 5 in the disc rotational direction to regulate the height position of the disc 30 relative to the magnetic head 5. .

As shown in FIG. 8, the carriage 6 is moved by a carriage transfer mechanism 7 consisting of a stepping motor 24, a screw shaft 26 on which an intermittent drive screw 25 is formed, etc.
The magnetic head 5 is moved in the radial direction of the disk 30 along the guide shaft 27, and the magnetic head 5 provided on the right end side of the carriage 6 is positioned at a desired recording track position to perform recording/reproduction.

This magnetic head 5 is a combination of two magnetic heads for producing a frame image, and is supported and fixed approximately at the center of a disc-shaped support 5C, which is approximately parallel to the disk 30. is attached to the carriage 6.

The support body 5c has a peripheral edge 5d formed slightly higher than the center, and a concave portion 5f formed inside the peripheral edge 5d.

In this example, the outer diameter of the support plate 5C is set to 7 mm, the inner diameter of the recessed portion 5f is set to 6 mm, and the depth of the recessed portion 5f is set to 100 μm.

In addition, the frame 1 on the anti-disk cartridge insertion side Q in FIG.
A motor 70 is provided above.

Further, a reduction gear portion 71 is provided on the drive shaft side of the motor 70.
is provided, and the output end of the final stage gear of the reduction gear section 71 can be latched to a part of the insertion side Q of the slide plate 2, and the output end is attached to a part of the slide plate 2 at the time of ejection. By locking, the slide plate 2 can be slid toward the disk cartridge insertion side A, that is, toward the front plate 45.

[Problem to be solved by the invention]

By the way, in the above-mentioned prior art, the eject lever 66 and the lock lever 29 are swingably supported by a support shaft 66b erected on the side Q of the frame 1 opposite to the disk cartridge insertion side. When the disk cartridge 3 is inserted from the unloaded state, the disk cartridge 3 pushes the eject lever 66 and releases the lock lever 29 from the slide plate 2 . In this process, the engaging portion of the engaging lever 58 shown in FIG.
When the disc cartridge 3 enters the engagement groove 38 of the case 31, the rear part of the retention lever 58 is engaged with the engagement groove 38 of the case 31 of
When the engagement lever 58 and the case 31 come into contact with the inner surface of the side plate 17, the engagement lever 58 and the case 31 cannot be separated, and the holder 4 and the disc cartridge 3 come to operate integrally. at this point
Since the lock lever 29 is unlocked as described above, the slide plate 2 moves toward the opposite disk cartridge insertion side Q due to the elastic force of the spring, and the cam groove and the guide groove
The protrusion 21°22.23 inserted into B, 19.20 is vertically below the guide groove 18°19.20 due to the change in the relative positional relationship between the cam groove and the guide groove 1B, 19°20 as shown in It is moved as shown. As a result, the holder 4 reaches the loading position, the disc 30 is loaded onto the turntable 8, and recording/reproduction is performed.

Therefore, in the above prior art, the eject lever 66
．． 0tsu lever 29. Retaining lever 58°, eject spring 66a, lock spring 65. The number of parts was large due to the need for load springs, etc., and the assembly work was complicated.

Further, since unlocking of the holder 4 and fitting of the de-f SF cartridge 3 into the engagement groove 38 are performed by separate parts, it is difficult to match the timing accuracy.

Further, since an eject mechanism such as the eject lever 66 is disposed in the frame 1, this has been an obstacle to the demand for miniaturization.

The present invention has been made in view of the above-mentioned problems of the prior art, and aims to reduce the number of parts, and also to improve the timing between unlocking and fitting of the engagement groove of the disk cartridge. To provide a disk drive device which can be made compact and easy to assemble by not applying preload during loading and by omitting a space for attaching a support shaft of a frame body. 5 [Means for Solving the Problems] In order to achieve the above object, the present invention provides a cartridge holder for holding a disk cartridge formed by housing an information recording disk in a hard case, and a cartridge holder in which the cartridge holder is formed in advance. A frame that is movably held along a guide groove, a turntable on which the information recording disk is placed, a rotational drive means that rotates the turntable, and a frame that is slidably attached to the frame and that moves as the slide moves. A disk drive device comprising: a slide plate that moves the cartridge holder along the guide groove to perform loading and ejecting operations with respect to the turntable; An engaging portion that engages with a retaining groove formed on the side surface of the case of the disk cartridge on one side, a protrusion that engages with an engaging groove formed on the side surface of the frame body, an interlocking arm portion, and the other end side. a lock lever having an abutting portion formed in the holder; a receiving portion slidably and rotatably supported by the cartridge holder and having one end thereof abutted against a leading end of the disk cartridge; an eject lever having an abutting part that abuts the abutting part of the ejector, and an elongated hole formed along the sliding direction, through which the support shaft is inserted and in which the interlocking arm of the lock lever is engaged; a biasing device that biases the lever in the ejection direction; and a release unit that engages with the eject lever when the eject lever is rotated and slides in the insertion direction to release contact with the leading end of the disk cartridge. It has a configuration with and.

[For production]

With the above means, the eject lever is disengaged from the lock lever during loading, so even if ejection of the disk cartridge is obstructed during ejection, the holder can be moved, and when the obstruction is removed, the disk cartridge can be ejected by the eject lever.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1(a) and 1(b).

FIG. 1(a) or b) shows a still video floppy disk drive device (hereinafter referred to as S V F) according to an embodiment of the present invention.
1 (referred to as the "device").
), (b), (c), and (d) are explanatory diagrams showing each operating state at the time of ejection, start of retraction, loading, and ejection interference.

The holder 4 has, on both sides when viewed from the disk car i-ridge insertion side A, a holding section 53 for the disk cartridge 3 having a substantially U-shaped cross section, and an upper surface plate 5 that connects both holding sections 53 on the scale plate side.
4.

13 is an eject lever, this eject lever 13
are parallel elongated guide holes 13a formed near both ends.
, 13b, and a holder 4 receiving part 13c which is bent at one end to receive the holder 4 and comes to a rest state with the release part 54e of the holder 4 by rotation of the eject lever 13.
An engaging portion 13b of the eject spring 14 formed at the center end, and an actuating portion 13f that contacts and rotates a lock lever 15, which will be described later. The eject lever 13 is slidably supported on the holder 4 by inserting a guide pin 54a provided upright on the top plate 54 of the holder 4 into an elongated hole 13a.

15 is a lock lever, and this lock lever 15 is rotatably supported by a stud 72 installed upright in the holder 4. One end of the lock lever 15 has a contact portion 15a against which the operating portion 13f of the holder 4 comes into contact, and a frame. A protrusion 15b that can be engaged with the engagement groove 1b of the body 1, a hook part 15c that is inserted into the engagement groove 38 of the disk cartridge 3, a hook part 15d that hooks one end of the coil spring 19, and an eject lever. 13 long holes 1
An engagement pin 15e that is inserted through 3b is provided. The other end of this coil spring 19 is connected to the hook portion 54 of the holder 4.
b, and also the winding portion 19a of the coil restraint 19.
is held by the protruding piece 54c of the holder 4, and the lock lever 15 is biased clockwise.

The other end of the eject spring 14 is hooked onto a pin 54d of the holder 4, and the eject lever 13 is biased toward the disk cartridge 3 insertion port side A by the eject spring 14, and the guide pin 54
It is biased counterclockwise around point a.

Incidentally, in the above-mentioned embodiment, the configurations which are not particularly explained are the same as those of the conventional example shown in FIGS. 2 to 9.

Next, the operation of the SVF device configured as described above will be explained.

FIG. 1(a) is an explanatory diagram of the SVF device showing the state before loading the disk cartridge 3. In this state, the slide plate 2 is moved to a position closest to the front plate 45 against the elastic force of the spring. At this time, the protrusion 15b of the lock lever 15 biased by the coil spring 19 engages with the engagement groove 1b of the frame 1, and movement in the disk cartridge insertion direction B is prevented.

When the slide plate 2 is in the unloading position, the protrusion protruding toward the side surface 55.56 of the holder 4 is located in the horizontal part of the guide groove formed on the side surface 16.17 of the frame l, and It is pushed by the surface of the vertical portion of the slide plate 2 facing away from the disk cartridge insertion side Q, and is located closest to the disk cartridge insertion opening of the front plate 45 and at the same level as the disk cartridge insertion opening. This position is the standby position of the disc cartridge 3 and also the ejection position of the disc cartridge 3.

At this time, the eject lever 13 is urged by the eject spring 14 to a position closest to the front plate 45, and the lock lever 15 is urged clockwise by the coil spring 19 around the pin 72, so that the protrusion 15b is engaged with the engagement groove 1b of the frame body 1.

When the disk cartridge 3 is inserted into the disk cartridge insertion slot of the front plate 45 from the above-mentioned unloaded state, the disk cartridge 3 is inserted into the holder 4 while pushing open the door.
When the eject lever 13 is pressed further, the disk cartridge contact portion 13C locks the lock lever 15 with the coil spring as shown in FIG. 1(b). 19 and rotate it counterclockwise against lock lever 1.
5 and the engaging groove 1b of the frame body 1 are unlocked. In this process, as shown in FIG. 1(c), the hook portion 15c of the lock lever 15 is
The engaging portion 15b engages with the engaging groove 38 of the case 31, and the engaging portion 15b engages with the side plate 55 of the frame 1 as the disc cartridge 3 enters.
The hook portion 15c and the case 31 cannot be separated from each other, and the holder 4 and the disc cartridge 3 come to operate integrally. At the same time, the lock lever 15 is rotated counterclockwise to release the eject lever 1.
3 is also rotated clockwise about the guide pin 54a by the retaining pin 15e. Since the lock lever 15 is unlocked as described above, the slide plate 2 moves toward the opposite disk cartridge insertion side Q due to the elastic force of the spring, and the protrusion inserted into the cam groove and the guide groove moves into the cam groove. By changing the relative positional relationship between the guide groove and the guide groove, the guide groove is moved vertically downward. As a result, holder 4
reaches the load position, and the disc 31 is placed on the turntable 8.
can be loaded onto the computer for recording/playback.

During this loading process, when the holder 4 is lowered, the positioning pin insertion hole is fitted into the positioning pin IP provided upright from the bottom plate 1a of the frame 1, and the disk cartridge 3 is inserted into the positioning pin insertion hole.
The horizontal position with respect to the frame body 1 is regulated, and the height direction position is also regulated. This position in the height direction is defined by three points: the height of the upper end of the support shaft (not shown) and the two positioning pins, and these three support the disk cartridge 3 at three points. Therefore, when the holder 4 starts to descend, the disk cartridge 3 first comes into contact with the positioning pin to define the load position (lowest position).

When recording/reproduction of the disc 31 of the disc cartridge 3 loaded in the above manner is completed, an eject button (not shown) on the camera side is pressed to eject the disc cartridge 3. This can be done by pressing the eject button, causing the motor to rotate, and returning the boulder 4 to the disk cartridge insertion side A via a reduction gear mechanism, etc., to a position where it can be locked by the lock lever 15 of the holder 4. becomes.

That is, in response to the return movement of the slide plate 2, the holder 4
rises along the vertical portion of the guide groove, and moves toward the disk cartridge insertion side A along the horizontal portion of the guide groove. Then, due to the elastic force of the spring 19, the protrusion 15b of the lock lever 15 locks into the locking groove 1b of the frame body 1, holding the holder 4 in the unloading or ejecting completion position, and almost at the same time, the hook portion 15c is released from the engagement groove 38, the eject lever 13 biased by the elastic force of the eject spring 14 pushes the disk cartridge 3 in the direction opposite to B, and the shutter is lowered downward. The disk cartridge 3 is ejected from the disk cartridge insertion opening of the front plate 45 which is opened.

At this time, a state in which ejection of the disk cartridge 3 is obstructed by, for example, a finger or the like is shown in FIG. 1(d).

As mentioned above, the holder 4 has been returned to the side closer to the disk cartridge insertion side A. The lock lever 15 supported by the stud 72 on the holder 4 is also returned to the disk cartridge insertion example A, but when loading the lock lever 15 in FIG.
However, since the contact portion 13f of the eject lever 13 is disengaged, the eject lever 13 and the disk cartridge 3 are not pushed by the contact portion 15a of the lock lever 15 and can remain in the same position.

When the interference from fingers and the like is eliminated, the eject lever 13 biased by the elastic force of the eject spring 14 pushes the disk cartridge 3 in the direction opposite to B, allowing the disk cartridge to be inserted into the opened front plate 45. The disk cartridge 3 is ejected from the mouth and returns to the state shown in FIG. 1(a).

According to the above embodiment, (1) the lock lever and the load cam (retention lever 58) can be combined into one, and the lock spring and the load spring can be combined into one, thereby reducing the number of parts.

(2) Since the holder 4 can be unlocked and the disc cartridge 3 can be fitted into the engagement groove 38 at the same time, timing accuracy can be improved.

■When loading, the eject lever 13 is released from the release part 5.
Since it is separated from the disk cartridge 3 by 4e, no preload is applied to the disk cartridge 3 during loading.

- During loading, the eject lever 13 is rotated by the rotation of the lock lever 15, and even if ejection of the disk cartridge 3 is obstructed, that is, even if the eject lever 13 cannot be moved, the lock lever 13 is rotated by the rotation of the lock lever 15.
15 can move together with the holder 4 without coming into contact with the eject lever 13, and there is no risk of damaging the drive mechanism or the disk cartridge 3.

■Since the lock lever 15 and eject lever 13 are arranged in the holder 4, there is no need to erect a support shaft on the frame 1 as in the conventional case, allowing for miniaturization and easy assembly work. .

〔Effect of the invention〕

As explained above, according to the present invention, the number of parts can be reduced, the timing between unlocking and fitting of the disk cartridge into the engagement groove can be improved, and it is possible to avoid applying preload during loading. In addition, the space for attaching the support shaft of the frame body can be omitted, making it possible to achieve miniaturization and ease of assembly.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are for explaining one embodiment of the present invention, and Figures 1 (a), (b), and (c)
, (d) is an explanatory diagram showing each operating state at the time of ejection, start of retraction, loading, and ejection obstruction, and Figures 2 to 9 are for explaining the conventional SVF device. 3 is a front view of the SVF device, FIG. 4 is a rear view of the same, FIG. 5 is a left side view of the same, FIG. 6 is a plan view of the SVF device in a loaded state, and FIG. 7 is a right side view of the same, FIG. 8 is a plan view of the SVF device with the holder removed, and FIG. 9 is a plan view of the disk cartridge. 1...Frame body, 1a...Bottom plate, 1m, I
n... Stabilizer mounting part, 2... Slide plate, 3... Disc cartridge, 4...
...Holder, 5...Magnetic head, 5c...
...Support plate, 5r...Concave portion, 6...
Carriage, 7... Carriage transfer mechanism, 8.
...Turntable, 13...Eject lever 14...Spin shaft, 15...Lock lever 1st figure 1 1st figure (C ) Fig. 1 (d) Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 3 Fig. 7 I a Fig. 8 Fig. 5 6 4 ?

Claims (1)

[Claims] A cartridge holder that holds a disk cartridge formed by storing an information recording disk in a hard case, a frame that movably holds the cartridge holder along a pre-formed guide groove, and an information recording disk. A turntable on which a disc is placed, a rotational drive means for rotating the turntable, and a turntable that is slidably attached to the frame and moves the cartridge holder along the guide groove as the slide moves. A disk drive device includes a slide plate that performs a loading operation and an ejection operation on the cartridge holder, the slide plate being rotatably supported by the cartridge holder and having an engagement groove formed on one end side of the side surface of the case of the disk cartridge. a lock lever having an engaging part that engages with the lock lever, a protrusion that engages with the engaging groove formed on the side surface of the frame body, an interlocking arm part, and an abutting part formed on the other end side; It is slidably and rotatably supported by the cartridge holder, and has a receiving part on one end of which the tip of the disc cartridge comes into contact, an abutting part that comes into contact with the abutting part of the lock lever, and a receiving part that comes into contact with the abutting part of the lock lever; an eject lever having an elongated hole formed along the length of the axis, through which a support shaft is inserted, and in which the interlocking arm of the lock lever is engaged; a biasing means for biasing the eject lever in the ejection direction; A disc drive device comprising: a release part that engages with an eject lever and slides in the insertion direction to release contact with the leading end of the disc cartridge when the disc drive is rotated.