JP3049742B2 - Disk unit - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device for recording or reproducing data on and from a disk, and more particularly, to inserting, discharging, loading, and unloading a disk cassette in the disk device. And a slide plate arrangement for raising and lowering the cassette guide.

[Conventional technology]

The disk device is a device that records or reproduces information on a disk-shaped recording medium such as a magnetic disk or a laser disk. The disk as the recording medium is inserted and ejected, and is driven by a motor. The disk is rotated, and recording or reproduction is performed while moving the head in contact with or approaching the disk.

In this case, the head is mounted on a carriage,
The disk is moved (seeked) along the radial direction of the disk by the motor.

In the disk device, an insertion / ejection unit for mounting and discharging a disk, a disk rotation driving unit for rotating the disk by a motor, and a head at an arbitrary track position along a radial direction of the disk are provided on a base supporting each component. And a head loading means for loading and unloading the head to and from the disk.

Further, a control circuit for controlling the entire disk device, a connector for power supply, and the like are provided, and the control circuit is connected to a host device or the like via an interface.

Such a disk device is used as an external storage device of an electronic device such as a personal computer or a word processor, and may be configured as an independent device. However, in general, the disk device is often incorporated in a main body of the electronic device.

Also, with the miniaturization and portableness of electronic devices, there is a strong demand for smaller and lighter and thinner disk devices.

The insertion and ejection means for loading and unloading the disc includes a cassette guide having a guide function of inserting, ejecting, loading and unloading a disc cassette, and a slide plate having a cam portion for moving the cassette guide up and down. It is composed of

[Technical problem to be solved by the invention]

However, in the conventional disk device, since the side edge rising portion forming the cam portion of the slide plate is disposed outside the both side surfaces of the cassette guide, the width of the cassette insertion / ejection means is large. There has been a technical problem that the entire width of the disk device housed in the base cannot be reduced, and miniaturization is difficult.

Further, in the conventional disk device, since the cam mechanism for moving the cassette guide up and down is provided at substantially the same level as the disk cassette, it is difficult to reduce the width of the cassette insertion / ejection means. There has been a technical problem that the overall width of the disk device that houses the disk in the base cannot be reduced, and miniaturization is difficult.

The present invention has been made in view of such a technical problem, and an object of the present invention is to provide a space for accommodating an elevating mechanism of a cassette guide having a disc cassette guide mechanism by one side plate of the cassette guide. To provide a disk device that can reduce the space occupied by the cassette insertion / ejection means composed of the cassette guide and the slide plate, thereby reducing the size and weight of the device. It is.

[Means for solving the problem]

To achieve the above object, the disk device of the present invention
A base having left and right side surfaces on both sides of a bottom surface, and a vertical groove formed on the left and right side surfaces of the base are engaged with guide pins formed on the side surfaces to be supported so as to be able to move up and down. A cassette guide for guiding the stored disk cassette to a loading position or an unloading position; and A slide plate having a rising portion having a cam groove for controlling the elevation of the cassette guide, and a side plate of the cassette guide,
Notched so that a space is formed between the left and right side surfaces of the base to receive the cam pins of the cassette guide and the rising portions of the slide plate and allow the rising portions to move in the front-rear direction, It is characterized in that the rising portion of the slide plate is movable with respect to the cam pin in the space formed by cutting out the side plate of the cassette guide.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the drawings, the same reference numerals indicate the same or corresponding parts.

First, the overall structure of an example of a disk device suitable for applying the present invention will be described with reference to FIGS.

FIG. 1 is a plan view of the disk drive, and FIG.
FIG. 3 is a right side view as seen from the line II-II in the figure, and FIG. 3 is a front view as seen from the line III-III in FIG.

1 to 3, each of the components is housed in a box-shaped base 10 having an open top surface.
A cover 12 is mounted on the upper surface of the.

In addition, a front panel 16 having a cassette insertion opening 15 for inserting and ejecting the disk cassette 14 is attached to the front surface of the base 10.

The base 10 is formed of, for example, a thin, small-sized housing made of metal such as aluminum, and the cover 12 is provided for magnetic shielding and dust proofing.For example, a thin nonmagnetic material such as aluminum is used. It is formed of a plate-like member.

A projection 17 is formed on both sides of the base 10, and a notch 18 is formed on both sides of the cover 12 .The cover 12 engages each projection 17 with each notch 18. Positioning is fixed.

FIG. 4 is a plan view of the disk device of FIG. 1 with the cover removed.

In FIG. 4, a disc cassette is provided in the base 10.
A cassette guide 20 for guiding insertion into and ejection from the device 14 and loading and unloading onto and from the disk is mounted on the base 10 so as to be able to move up and down.

FIG. 5 is a view showing a cross section of the base 10 and the cassette guide 20 along a line VV in FIG. 4, and FIG. 6 is a partial side view taken along a line VI-VI in FIG. It is.

4 to 6, the cassette guide 20 has a shape for guiding and holding the disk cassette 14, and guide pins 21 are provided on both sides thereof.

On the other hand, on both sides of the base 10, a vertical groove 22 is formed in which the guide pin 21 of the cassette guide 20 is slidably fitted, and the cassette guide 20 extends vertically within a predetermined range along the vertical groove 22. It is mounted movably.

Inside the disk cassette 14, a disk (magnetic disk or the like) as a recording medium is housed so as to be accessible from the outside.

FIG. 7 shows a cassette guide from the disk device of FIG.
FIG. 21 is a plan view showing a state where 20 is removed.

In FIG. 7, a cam portion for regulating the position of the cassette guide in the left-right direction and moving the cassette guide up and down is formed below the cassette guide 20.
A slide plate 23 having a rising portion 27 is mounted.

The slide plate 23 is slidably mounted in the base 10 within a predetermined range in the front-rear direction.

At a substantially central portion of the bottom surface of the base 10, a disk-shaped disk drive motor 24, which will be described later, is mounted.The slide plate 23 has a shape in which the central portion is cut away so as to avoid the disk drive motor 24. doing.

The slide plate 23 has a lower surface as a base.
A plurality of (for example, four) projections (not shown) formed in the slide plate 10 are further supported. Further, elongated holes 29 formed in two right and left portions of the slide plate are fixed to the base 10 with a headed pin. By being engaged with 30, it is mounted so as to be prevented from moving upward and to be movable (slidable) within a predetermined range in the front-rear direction.

The slide plate 23 is always urged forward (toward the front panel 16) by a tension spring 25 stretched between the slide plate 23 and the base 10.

On the other hand, the slide plate 23 can be engaged with a latch member 26 described later, and is held at a rear position (the position in FIG. 7) against the tension spring 25 in an engaged (latched) state. .

As shown in FIGS. 4 and 7, the front and rear portions (total of four places) on both sides of the slide plate 23 are provided with rising portions 27 for regulating the cassette guide 20 to the left and right positions.
Are formed.

Each of the rising portions 27 has a cam portion (cam groove) 65 (a cam groove) having a function of raising and lowering the cassette guide 20 and determining a front position of the slide plate 23 (a type of stopper) according to upper and lower values of the cassette guide. FIG. 13, FIG. 14
Figure) is formed.

The lowering position of the cassette guide 20 is regulated by the height of the disk (more specifically, the boss thereof) magnetically attracted onto the rotor of the disk drive motor 24.

Front and rear parts on both sides of this cassette guide 20 (total of four places)
Each of the cam portions (cam grooves) 65 of the slide plate 23
A cam pin 28 (FIG. 4) is provided which engages with the cam pin 28.

Thus, when the slide plate 23 is at the rear position, the cassette guide 20 is held at the raised position by the engagement between the cam portion 65 and the cam pin 28 (FIG. 13), and the latch member 26 is released to release the When the slide plate is moved forward by the tension spring 25, the cassette guide 20 is lowered to the disk mounting position (FIG. 14).

When ejecting the disc cassette 14 set in the disc device, the eject button 31 attached to the slide plate 23 is pushed from above the front panel 16 to move the slide plate to the rear position,
The latch member 26 is rotated back by the spring force, and the disk cassette 14 is ejected forward by the rotation force.

4 and 7, a head seek means (head moving means) 33 is provided in the base 10.

The head seek means 33 is provided for connecting the head unit 32 (FIG. 4) having a recording / reproducing head to the drive motor 24.
Along the radial direction of the disc positioned and mounted on,
This is a mechanism for moving to an arbitrary track position.

Head loading means for loading and unloading the head onto and from the disk is provided in the head unit 32, as described later.

Therefore, the head seek means 33 includes a motor (for example, a stepping motor) 34 as a drive source, a screw shaft 35 for converting the rotation of the motor into a radial movement of the head unit 32, and a radial movement of the head unit 32. And a guide bar 36 for accurately guiding the components. These components are attached to predetermined positions on the base 10.

FIG. 8 is a partial plan view showing a main part before a disk cassette is mounted (latch member engaged state = latch state).
The figure is a plan view showing the same parts as in FIG. 8 when a disk cassette is mounted (latch member released state = latch released).
FIG. 10 is a side view of FIG.

Next, referring to FIG. 8 to FIG.
The operation of the latch member 26 will be described in detail.

The latch member 26 includes a vertical pin provided on the base 10.
By an ejector spring 42 attached rotatably about 41 and engaged with the latch member and the base,
It is constantly biased in the counterclockwise direction in FIG.

The latch member 26 has an arcuate engagement edge 43 and a slide edge (or stopper edge) 44 which is substantially in the front-rear direction in the unlatched state (FIG. 9).

8, the engaging portion (falling portion) 45 formed on the slide plate 23 is engaged with the engaging edge 43, and the slide plate is held at the rear position against the tension spring 25. Have been.

The latch member 26 is provided with a pushing arm 46 that contacts the front end of the disk cassette 14.

The pushing arm 46 functions as an ejector that pushes out the disc cassette 14 when ejecting the cassette,
When the cassette is inserted, it functions as a cassette opening member for opening the shutter 47 of the disk cassette 14, as shown in FIG.

In the latch state of FIG. 8, when the disk cassette 14 is inserted (in the direction of arrow B), the front end of the cassette comes into contact with the push-out arm 46, and the latch member 26 is rotated in the direction of arrow A by pushing the cassette. In the final position, the engaging edge 43 is disengaged from the engaging portion 45 of the slide plate 23 to be in the latch release state, and the slide plate 23
Is moved in the direction of arrow C by the tension spring 25, and is brought into the cassette mounted state (latched state) shown in FIG.

At this time, the latch member 26 is held at the position shown in FIG. 9 by the contact (rotational direction stopper) between the engaging portion 45 of the slide plate 23 and the slide edge 44. In this state, the latch member 26 The pushing arm 46 opens the shutter 47 of the disc cassette 14 to the left in FIG. 8 against the spring force, and the disc cassette is opened (recording,
Playable state).

On the other hand, when ejecting the disc cassette 14, the eject button 31 (FIG. 7) is pressed and the slide plate 23 is pushed.
Is pushed in the direction of arrow D (FIG. 9), the engaging portion 45 separates from the slide edge 44 of the latch member 26, and the latch member 26
The arrow E (FIG. 9) is actuated by the ejector spring 42.
The disc cassette 14 rotated in the direction and abutting on the pushing arm 46 is ejected forward by the rotating force at that time.

FIG. 11 is a plan view of a motor 24 for driving a disk (recording medium) in the disk cassette 14 to rotate.
FIG. 12 is a longitudinal sectional view taken along line XII-XII in FIG.

As the motor 24 for driving the disk, a flat motor having a circumferentially opposed type and a circumferential rotor is used,
The motor is mounted on the base 10.

11 and 12, 51 is a screw 52 on the base 10.
And a bearing housing 55 for holding bearings 53 and 54 on the stator yoke.
Fixed components such as the stator 56 and the coil 57 are attached.

A spindle shaft 58 is axially supported by the bearings 53 and 54. The spindle shaft has a disk-shaped outer rotor 60, a suction magnet 61 for adsorbing a disc on the rotor, and a Rotary components such as a disk drive pin 62 and a drive magnet 63 fixed to the inner surface of the rotor 60 so as to face the stator 56 are attached.

The base 10 is provided with rotor retaining portions 37, 38, and 39 for preventing the rotor 60 from being displaced upward, by cutting and raising a part of the base.

When the disk cassette 14 is mounted, a magnetic body (not shown) provided at the center of the disk is magnetically attracted to the attracting magnet 61, and an engaging hole (not shown) of the disk is connected to the drive pin. The disk (recording medium) is accurately positioned and mounted on the rotor 60 by being fitted to the 62.

13 and 14 are side views showing the operation of the cassette guide 20, and FIG. 13 shows a state in which the cassette guide is raised (a state in which the disk cassette 14 is not mounted or in the process of being inserted). The figure shows a state where the cassette guide is lowered (when the disc cassette is mounted).

In FIGS. 13 and 14, each of the rising portions 27 provided on both sides of the slide plate 23 includes:
A groove-like cam portion 65 is formed.

As shown, each cam groove 65 is composed of a horizontal groove on the front side (front panel side) and an inclined groove inclined downward and rearward from the horizontal groove.

As described above, the cam pins 28 provided on both side surfaces of the cassette guide 20 are engaged with the respective cam grooves 65.

The guide pins 21 provided at the center portions on both sides of the cassette guide 20 are engaged with the vertical grooves 22 (shown by two-dot chain lines) of a predetermined length formed on both sides of the base 10, The cassette guide 20 moves only vertically (up and down)
Mounted as possible.

Therefore, in the state shown in FIG. 13, the disk cassette 14 is inserted from the cassette insertion opening 15 of the front panel 16 and pushed in as far as it will go, and as described with reference to FIGS. The member 26 is rotated, the engagement portion 45 of the slide plate 23 is separated from the engagement edge 43, and the slide plate is moved by the tension spring 25 in the direction of arrow C (the direction toward the front panel 16).

Therefore, each of the cam pins 28 (a total of four places) is moved downward by each of the cam grooves (cam portions) 65, and the cassette guide 20 is lowered to the cassette mounting position shown in FIG.

In this case, the lowering position of the cassette guide 20 is regulated,
And since each cam groove 65 is engaged with each cam pin 28,
The front stop position of the slide plate 23 (Fig. 14)
It is determined by the shape of the cam portion 65.

Reference numerals 66 in FIGS. 13 and 14 denote protrusions for supporting the slide plate 23 provided at a plurality of positions on the base 10.

FIG. 15 is a side view showing the structure of the head unit 32 (FIG. 4).

In FIG. 15, the head unit 32 includes a carriage 68
It has a structure with each component mounted on it.

An upper head 69 for recording / reproducing the upper track of the disk and a lower head 70 for recording / reproducing the lower track of the disk are attached to the carriage 68.

The head unit 32 (or the carriage 68) has a shape having a predetermined length in the radial direction as shown in the drawing so that each head 69, 70 can record and reproduce each track.

Therefore, the lower head 70 is attached to the tip of the carriage 68.

On the other hand, the upper head 69 is attached to the carriage 68 so as to be able to move up and down.

In the illustrated example, an arm 72 is attached to the carriage 68 via a leaf spring 71 so as to be able to move up and down, and an upper head 69 is attached to the tip of the arm.

The upper head 69 and the lower head 70 are mounted at positions facing each other.

The leaf spring 71, together with the support member 73,
It is fixed to the carriage 68 by 74.

The head 69 is loaded on the support member 73 by urging the arm 72 toward the disk (in a state in which recording or reproduction is possible in contact with or close to the disk).
For this purpose, a head load spring 75 is mounted.

A head 69 indicated by a two-dot chain line indicates a loaded state of the head.

Also, on the side surface (one side or both sides) of the arm 72,
A projecting portion (elevating point) 76 for raising (unloading) the arm by utilizing the elevation of the cassette guide 20 is formed.

Note that two-dot chain lines 14A and 14B in FIG. 15 indicate the relative positions of the disk cassette 14 at the radially inner and outer positions of the head unit 32.

The two-dot chain line 24A indicates the relative position of the disk drive motor 24 when the head unit 32 advances to the innermost position.

By moving the carriage 68 in the radial direction by the motor 34, the head seek operation of the head unit 32 is performed.

FIG. 16 is a partial plan view showing the relationship between the head unit 32 and the head seek means from which the arm 72 and the upper head 69 in FIG. 15 have been removed, and FIG. 17 is a line XVII in FIG.
FIG. 7 is a cross-sectional view along -XVII.

16 and 17, a motor for head seek (for example, a stepping motor) 34 is attached to a rear wall portion 10A of the base 10, and both ends of a screw shaft 35, which is an output shaft thereof, It is rotatably supported by the rear wall portion 10A and the rising portion 10B.

Both ends of the guide bar 36 for guiding a seek (radial movement) of the carriage (head carriage) 68 are connected to the rear wall portion 10A of the base 10 and another rising portion 1
It is supported parallel to the radial direction by 0C.

Therefore, a leaf spring 78 which is pressed against the screw shaft 35 is attached to the lower surface of the overhang portion 77 of the carriage 68, and the carriage extends to the side and extends under the screw shaft 35 in a screw groove. Needle pin to engage with
79 is fixed.

Therefore, when the screw shaft 35 is rotated by the motor 34, the head unit is
The 32 (carriage 68) moves in the radial direction of the disk, and a seek operation for aligning the heads 69 and 79 with an arbitrary track is performed.

Further, bearing portions 80 which slide on the guide bar 36 are provided at two places on the opposite side of the carriage 68, so that the head unit 32 can be guided accurately during the seek operation.

The head unit 32 shown by a solid line in FIG. 16 shows a state where the heads 69 and 70 are at the innermost track position,
A two-dot chain line 32 in FIG. 16 indicates the head unit 32 when the head is at the outermost track position.

FIG. 18 is a partial plan view showing a main structure of an embodiment of the disk drive according to the present invention, and FIG. 19 is a line X in FIG.
It is the partial side view seen from IX-X IX.

18 and 19, the cassette guide 20
In the front-rear direction intermediate portion 81, the gap between the inner surface of the side wall portion on both sides of the base 10 has a width that is the required amount a, but faces the front and rear portions, that is, the rising portions 27 of the slide plate 23. In the portions 82 and 83, the receiving spaces 84 and 85 for receiving the rising portions 27 and allowing the rising portions to move in the front-rear direction are formed, and thus the width is reduced in a stepped manner.

The rising portions 27 formed at the front and rear portions on both sides of the slide plate 23 extend substantially vertically to the upper side of the cassette guide 20 in the spaces 84 and 85.

A required amount of gap b is provided between each rising portion 27 and the inner surfaces of the side wall portions on both sides of the base 10.

Therefore, the gap b is set to be substantially the same as the gap a on the side surface of the cassette guide (for example, about 0.2 to 2.0 mm).

A cam groove 65 is formed near the upper end of each of the rising portions 27.

On the other hand, rising portions 87 and 88 are formed on the upper sides of the side portions 82 and 83 on both sides of the cassette guide 20, and each of the rising portions 87 and 88 has a cam pin that engages with each of the cam grooves 65.
28 are provided.

In this case, the upper and lower positions of the cam pins 28 are selected above the disk cassette 14 held in the cassette guide 20.

A rising portion 86 protruding upward is formed in the intermediate portion 81 on both sides of the cassette guide 20, and the guide pin 21 is provided in the rising portion.

Each guide pin 21 projects to both sides, and is fitted in the vertical groove 22 formed in the side wall of the base 10.

With the above configuration, the disk device according to an embodiment of the present invention, that is, the disk as a recording medium is rotated and the heads 69 and 70 are moved in a predetermined direction to perform recording or reproduction on the disk. In the disk device, a side surface 81 of a cassette guide 20 having a function of guiding insertion, ejection, loading, and unloading of a disk cassette 14 and a side edge forming a cam portion 65 of a slide plate 23 for raising and lowering the cassette guide. There is provided a disk device characterized by arranging the outer surface of the rising portion 27 and substantially the same vertical plane.

Further, according to the above configuration, by rotating the disk serving as a recording medium and moving the heads 69 and 70 in a predetermined direction, the disk cassette 14 is positioned at a disk position where recording or reproduction is performed on the disk.
A cassette guide 20 having a function of guiding insertion, ejection, loading, and unloading of the cassette guide, and a slide plate 23 for raising and lowering the cassette guide.
There is provided a disk device characterized in that a cam mechanism for raising and lowering 20 is provided at a position above the disk cassette 14 in the cassette guide.

According to the embodiment described above, the side plate of the cassette guide 20 is positioned between the left and right side surfaces of the base 10.
20 cam pins 28 and rising part of slide plate 23
The slide plates are cut out so as to form spaces 84 and 85 that receive the 27 and allow the rising portion 27 to move in the front-rear direction, and are formed by cutting the side plates of the cassette guide 20. 23 rising part
27 is configured to be movable with respect to the cam pin 28, so that the cassette guide is arranged within the space in the width direction defined by the plate pressure of the side plate of the cassette guide 20 and the rising portion 27 of the cam pin 28 and the slide plate 23. As a result, the space for accommodating the elevating mechanism of the cassette guide 20 can be reduced to the space for one side plate of the cassette guide, thereby occupying the cassette insertion / ejection means composed of the cassette guide 20 and the slide plate 23. The space can be reduced, and the size and weight of the device can be reduced accordingly.

Also, cam mechanisms provided on both sides of the cassette guide and the slide plate 23 for raising and lowering the cassette guide 20, that is, each cam pin 27 and a cam groove 65 engaging with them, and each guide pin 21 and these The vertical groove 22 that engages with the disk cassette 14 in the cassette guide 20 is disposed above the disk cassette 14, so that interference between the cam mechanism and the disk cassette can be eliminated, and the width of the disk device can be further reduced accordingly. It is possible to reduce the size and weight of the disk device.

〔The invention's effect〕

As is apparent from the above description, according to the disk device of the present invention, the base having the left and right side surfaces on both sides of the bottom surface and the vertical grooves formed on the left and right side surfaces of the base are formed on the side surfaces. A cassette guide that is vertically movably supported by engaging a guide pin and guides a disk cassette containing a disk to a load position or an unload position; and a cassette guide that is supported on the base so as to be slidable back and forth. A slide plate formed with a rising portion having a cam groove for controlling the elevation of the cassette guide by engaging with a cam pin provided on a side portion of the upper surface of the cassette guide. The rising of the cam pin and the slide plate of the cassette guide between the left and right side surfaces is The cassette plate is cut out so as to form a space that allows the rising portion to move in the front-rear direction while allowing the rising portion of the slide plate to be formed in the space formed by cutting the side plate of the cassette guide. The cassette pin can be moved with respect to the cam pin, so that the cassette pin cam pin and the rising portion of the slide plate can be arranged in the space in the width direction defined by the thickness of the side plate of the cassette guide. The space for accommodating the mechanism can be reduced to the space for one side plate of the cassette guide, whereby the space occupied by the cassette insertion / ejection means including the cassette guide and the slide plate can be reduced. A device that can reduce the size and weight of the device Click device is provided.

[Brief description of the drawings]

FIG. 1 is a plan view of a disk drive suitable for applying the present invention, FIG. 2 is a side view taken along the line II-II in FIG. 1, and FIG. 3 is a line III-II in FIG. III is a front view, FIG. 4 is a plan view of the disk device of FIG. 1 with the cover removed, FIG. 5 is a cross-sectional view taken along line VV in FIG. 4, and FIG. 4 is a partial side view as viewed from the line VI-VI in FIG. 4, FIG. 7 is a plan view of the disk device of FIG. 4 with the cassette guide removed, and FIG. 8 is a portion showing the latch state of the latch member in FIG. FIG. 9 is a partial plan view showing an unlatched state of the latch member of FIG. 8, FIG. 10 is a side view taken along line XX in FIG. 9,
FIG. 11 is a plan view of the disk rotation drive motor in FIG. 7, FIG. 12 is a longitudinal sectional view taken along the line XII-XII in FIG. 11, and FIG. FIG. 14 is a side view showing a state where the cassette guide is lowered from FIG. 13, FIG. 14 is a side view showing the head unit in FIG. 4, and FIG. 16 is a side view showing the head unit in FIG. Head seek means and
15 is a partially cutaway plan view showing the head unit, FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG. 16, and FIG. 18 is a diagram showing a disk drive according to an embodiment of the present invention. FIG. 19 is a partial plan view showing a partial structure, and FIG. 19 is a partially broken partial side view taken along line XIX-XIX in FIG. In the following, reference numerals indicating major components in the drawings are listed. 10 ... base, 12 ... cover, 14 ... disk cassette, 16 ... front panel, 20 ... cassette guide, 21
…… Guide pin, 22 …… Vertical groove, 23 …… Slide plate, 24 …… Motor for disk rotation drive, 25 …… Tension spring, 26 …… Latch member, 27 …… Rising part (slide plate), 28… ... Cam pin, 32 ... Head unit, 33 ... Head seek means, 34 ... Head seek motor, 35 ... Screw shaft, 36 ... Guide bar, 42 ... Ejector spring, 65 ... Cam groove, 68
… Head carriage, 69, 70… Head, 81… Side (cassette guide), 86… rising part (cassette guide), 87, 88… rising part (cassette guide).

Claims (1)

(57) [Claims] 1. A base having left and right side surfaces on both sides of a bottom surface, and a vertical groove formed on the left and right side surfaces of the base is engaged with a guide pin formed on the side surface so that the base can be moved up and down. A cassette guide which is supported and guides a disk cassette containing a disk to a loading position or an unloading position; and A slide plate formed with a rising portion having a cam groove for controlling the cassette guide to move up and down, and a side plate of the cassette guide is provided between the left and right side surfaces of the base. The upright portion of the cam pin and the slide plate is received, and the front and rear portions of the upright portion are received. So that a rising portion of the slide plate is movable with respect to the cam pins in the space formed by cutting the side plate of the cassette guide. A disk device characterized by comprising.