JP2978719B2 - Disk drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a substantially rectangular parallelepiped cassette in which a disk body as a recording medium such as a magneto-optical disk or an optical disk is rotatably stored. Slits are formed on both side surfaces of the side and a slider provided with a slider that is guided by the slits and moves in parallel with the insertion direction in order to expose the disk body so that recording and reproduction can be performed. And a disk drive device provided for driving.

[0002]

2. Description of the Related Art At present, discs such as mini discs are widely available on the market as recording media stored in cassettes. A disk drive is used for recording and reproducing this kind of disk. When a disk is mounted on a disk drive, the disk is generally inserted from the front of the disk drive, as is called a so-called front loading method. Thereafter, the disc is mounted at the recording / reproducing position by the loading device in the apparatus.

As shown in FIGS. 9 and 10, which are explanatory views of the present invention, the disk 1 has a disk body 1a stored in a substantially rectangular parallelepiped cassette. This disc 1 is inserted into a disc drive (see FIG. 9).
(In the direction of arrow C), the length L1 is set to 68 mm, the width L2 is set to 72 mm, and the thickness L3 is set to 5 mm.

FIGS. 10A and 10C show the above cassettes.
(D) As shown in (e), slits 1i and 1k are provided at both ends on the insertion tip side (arrow C side), and these slits 1i and 1k open and close a slider (not shown) for opening and closing the slider 1g. The member is guided. As shown in FIGS. 10A, 10D, and 10E, these slits 1i and 1k are formed at positions intentionally biased toward the upper case 1b to avoid erroneous insertion.

The operation of correctly inserting the disk 1 into a conventional disk drive (hereinafter, referred to as "normal insertion") will be described below.

First, as shown in FIGS. 17A and 17B and FIG. 18, when the disc 1 in the non-inserted state is inserted in the direction of arrow C, the disc 1 moves while its outer frame is regulated by the holder 53. . Next, as shown in FIG. 19, when the slider opening / closing portion 53d of the holder 53 is fitted into the slit 1i of the disc 1, the opposing actuator 56a of the first detection switch 56 is pressed in the direction of arrow A, and the first detection switch is turned on. 56 is turned on. Further, when the disc 1 is inserted, the rising portion 54c of the slide lever 54 on the arrow C side is pressed in the direction of the arrow C, and the slide lever 54 slides in the direction of the arrow C. then,
As shown in FIG. 20, the second detection switch 55 provided on the arrow D side of the slide lever 54 is turned on when its actuator 55a is separated from the rising portion 53a of the holder 53.
Becomes The loading motor (not shown) is driven by the ON signal of the second detection switch 55, and the disc 1 is loaded from this position toward the recording / reproducing position.

Here, the width of the holder insertion opening 60 in the holder 53 is approximately 72 mm, and the length L1 (68 mm) of the disc 1 is shorter than the width L2 (72 mm). It is apparently possible to try to insert in the wrong direction.

However, among the above seven types of erroneous insertion, the cassette slits are required in one direction at the time of reverse insertion in the normal insertion direction or in two directions at 180 ° opposite to the normal insertion direction. Holder 53 for 1i ・ 1k
The slider opening / closing portion 53d is not fitted, and the slider opening / closing portion 53d has a positional relationship that obstructs the insertion path of the disc 1 in these three directions, so that the erroneous insertion in the three directions can be prevented. (See FIGS. 6 and 7 which are explanatory diagrams of the present invention).

On the other hand, a case will be described below in which erroneous insertion is attempted in a total of four directions on each of the front and back sides in the right and left rotation directions by 90 ° from the normal insertion direction other than the three erroneous insertion directions.

As shown in FIGS. 21A and 21B, while the width of the holder insertion opening 60 is about 72 mm,
In these four directions, the relative width of the disk 1 is 68 mm
Slider opening and closing portion 53d
The positional relationship does not interfere with the insertion path of the disk 1 in the direction. For this reason, the disc 1 is
Of the holder 53
When the outer frame of the disc 1 comes into contact with the protrusion 53b formed at the end of the arrow C side and the arrow B side, the insertion is prevented.

In each of these seven erroneous insertions, the first detection switch 56 and the second detection switch 55
Are not turned on as in the case of regular insertion, so that the loading motor is not driven, and it is possible for the user to recognize the erroneous insertion on the spot.

As a result, in the conventional disk drive,
Of the seven erroneous insertion directions of the disc 1, one direction or the normal insertion direction at the time of upside down insertion in the normal insertion direction and 18
For a total of three directions of the front and back sides in the reverse direction of 0 °, in order to recognize the erroneous insertion at the initial stage of insertion, the slider opening / closing portion 53d which is the insertion prevention position of the erroneous insertion is held within the length of the slit 1i. It can be formed close to the insertion port 60 side (arrow D side).

[0013]

However, in the conventional disk drive device, the erroneous insertion prevention in the case of erroneous insertion in a total of four directions on each of the right and left rotation directions of 90 ° from the normal insertion direction is prevented. The protruding portion 53b is limited to the back side of the holder 53 corresponding to the position of the slit 1k. That is, the protruding portion 53b can be fitted into the slit 1k only at the time of normal insertion, and the position of the slit 1k at the time of completion of the normal insertion is on the back side of the holder 53. For this reason, the projecting portion 53b for preventing the erroneous insertion in the above four directions.
Is necessarily on the back side of the holder 53.

As a result, as shown in FIG. 18, the projecting portion 53b, which is a blocking position at the time of erroneous insertion in the above four directions,
Slider opening / closing portion 5 which is the erroneous insertion prevention position in the three directions
The distance L is substantially the dimension L with respect to 3d and is located on the back side of the holder 53. For this reason, when the disc 1 is erroneously inserted in the above four directions, the disc 1 is inserted all the way to the back of the holder 53, thereby giving the user the same feeling of inserting the disc 1 as in the regular insertion. It is difficult to immediately recognize an erroneous handling, and there is a problem that the user is confused.

In addition, when the disk 1 is inserted incorrectly in the above four directions, the disk 1 is inserted as far as it will go. Therefore, in order to easily pick the disk 1 when retracting the disk, as shown in FIG. It is necessary to position the front surface 61 as close to the holder insertion opening 60 as possible. For this reason,
There is a problem that the space for loading in the disk 1 is reduced, and the degree of freedom of installation of the design surface and the opening / closing lid is reduced.

Further, there is another problem that the insertion detection position of the disc 1 needs to be set as far as possible to the rear of the holder 53 in order to always make the loading start stable.

That is, the actuator 56a of the first detection switch 56 is provided above the slider opening / closing portion 53d (see FIG. 17B), and is turned ON only when the disc 1 is properly inserted. Also, the second detection switch 55
The actuator 55a detects the disc 1 at a position at least rearward in the insertion direction from the position of the slider opening / closing portion 3d. Then, the disc 1 is properly inserted and the first detection switch 56 and the second detection switch 5
Only when both the switches 5 are turned on, the motor of the loading device is driven to load the disk 1. As described above, the installation position of the first detection switch 56 is restricted to the upper side of the slider opening / closing portion 53d, so that the installation position of the first detection switch 56 is necessarily located inside the holder 53.

Further, detection means such as a plurality of detection switches 55 and 56 are required, which increases the cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to allow a user to easily recognize an erroneous insertion without feeling uncomfortable and to withdraw the insertion. An object of the present invention is to provide a disk drive capable of securing a space between a front position of the drive and a holder insertion opening and avoiding a cost increase factor.

[0020]

According to a first aspect of the present invention, there is provided a disk drive device comprising a substantially rectangular parallelepiped cassette in which a disk body is rotatably stored. Are both sides on the insertion tip side
From the center in the thickness direction on the side surface of the cassette
A slit is formed at a position deviated to one side in the direction, and a slider provided with a slider that is guided by the slit and moves in parallel with the insertion direction in order to expose the disk main body for recording and reproduction is recorded from a position where it can be extracted. A slider opening / closing member that is provided for driving to a playable position and that fits into the slit and presses the slider when the disk is inserted in a correct insertion direction into a holder that holds the disk; and When the disc is inserted by a predetermined amount, the disc drive further drives the disc to a recording / reproducing position by further inserting and moving the disc based on a detection signal of the detecting means for detecting insertion of the disc, and then moving the disc up and down. Is disposed outside the inner edge of the slider opening / closing member, and Than the insertion port side edge is disposed in the insertion direction rear side, a first moving member to retract move to the side of the disk is pressed against the side surface of the disk when the further disc is inserted a predetermined amount into the holder, the disc A second moving member disposed on the insertion path and having a positional relationship capable of preventing the insertion at a predetermined position, and interlocking with the retreating movement of the first moving member, retreating to release the blocking. And a detection switch for detecting that a disk has been inserted by the movement of the first moving member.

According to a second aspect of the present invention, in order to solve the above-mentioned problems, in the disk drive according to the first aspect, the second moving member is provided above the holder and the second moving member is provided above the holder. It has a V-shaped part that protrudes in a V-shape through the hole and a protruding part that protrudes laterally from this V-shaped part, and the inclined surface of the V-shaped part can contact the disk on the insertion path of the disk When the disc is not inserted, the protruding portion takes an engagement position where it engages with the inner surface of the holder. When the disc is inserted, the projection moves in conjunction with the movement of the first moving member. In order to release the engagement state with the inner surface, it takes a release position in which it has been retracted slightly from the engagement position to the side, and the second moving member is brought into contact with the inclined surface at the time of insertion into the disk, whereby the disk Insert In between and the recording reproducing state until completion of insertion from within, it is characterized in that the lower end of the V-shaped portion is formed so as to urge the pressing disc.

[0022]

According to the first aspect of the present invention, when a disc is inserted in a correct insertion direction (hereinafter, referred to as "regular insertion"), first, a slit formed on both side surfaces on the insertion tip side of the cassette is inserted. The slider opening / closing member is fitted, and the disc is inserted further into the back.

At this time, the slider is pressed by the slider opening / closing member, guided by the slit, moves in parallel with the insertion direction, and exposes the disk body.

Next, the disc is disposed outside the inner edge of the slider opening / closing member, and is disposed further behind the insertion opening side edge of the slider opening / closing member in the insertion direction .
Contact the moving member. At this time, the first moving member is retracted by being pressed by the side surface of the disk. Further, at this time, the second moving member disposed on the insertion path of the disc and having a positional relationship capable of preventing the insertion at a predetermined position is moved in conjunction with the retreating movement of the first moving member. Evacuation to release. Therefore, the disc can be inserted further into the back.

Then, by the retreating movement of the first moving member, the detection switch detects that the disk has been inserted. As a result, the disc is further inserted and moved, and then moved up and down to be driven to the recording / reproducing position.

On the other hand, insertion of seven types of discs other than regular insertion is prevented as follows.

First, the slider opening / closing member provided in the holder has three directions, ie, one direction when the disc is inserted upside down in the normal insertion direction and two directions upside down at 180 ° opposite to the normal insertion direction. As a result, erroneous insertion can be prevented as in the related art.

Next, except for the above three wrong insertion directions,
When the width of the disk is small, the disk does not abut the slider opening / closing member and the first moving member with respect to the erroneous insertion in the remaining four directions, that is, the right and left rotation directions of 90 ° from the normal insertion direction. Therefore, the disc is inserted further back. However, at this time, the second moving member has a positional relationship on the insertion path of the disk that can prevent insertion of the disk. Then, in the case of normal insertion of the disk, the second moving member is withdrawn to release the above-mentioned block in conjunction with the withdrawal movement of the first moving member. No evacuation movement is performed, and therefore, the operation of evacuation movement of the second moving member in order to release the above-mentioned inhibition in conjunction with the first movement member is not performed. As a result,
The disc is prevented from being inserted by the second moving member.

Therefore, the length of the slit in the disk is limited compared to the conventional method in which a protrusion is provided on the side of the disk opposite to the slider, which can be inserted into the slit only during normal insertion. In addition, the erroneous insertion prevention position in the four directions is set to the insertion port side, that is,
The position can be set very close to the erroneous insertion prevention position in the direction. For this reason, the difference in the amount of insertion of the disc at the time of the above-mentioned seven types of erroneous insertion prevention is small, and the user can easily recognize the erroneous insertion without feeling uncomfortable and withdraw the insertion.

Further, since the erroneous insertion preventing positions are not located on the back side of the holder, the position of the front surface of the disk drive unit when the user retracts the disk does not hinder the user from picking the disk with his / her finger. Can be set to For this reason, a space can be provided between the position of the front surface of the disk drive device and the holder insertion opening, which is advantageous in terms of design and freedom of installation of the opening / closing lid.

Further, since a plurality of detection switches are not required as in the prior art and only a single detection switch is used, it is possible to avoid a factor of cost increase of the switch and the wiring material.

According to the structure of the second aspect, when the disk is inserted in the normal insertion direction, the first moving member performs the same operation as in the first aspect, and the disk is inserted further into the back. Becomes possible. Thereafter, the disc comes into contact with the inclined surface of the V-shaped portion of the second moving member. At this time, the second moving member retreats so as to release the above-mentioned inhibition in conjunction with the movement of the first moving member. And this gives
The protruding portion that protrudes laterally from the V-shape takes a release position that is slightly retracted to the side from the engagement position where it is engaged with the inner surface of the holder, and there is no obstacle above. For this reason, the inclined surface which comes into contact with the disk is pushed upward with the insertion movement of the disk, whereby the disk can be inserted further into the back. Thereafter, the disk is driven to the recording / reproducing position, as in the first aspect. Also,
At this time, the lower end of the V-shaped portion presses and biases the disk to fix the second moving member from the middle of insertion of the disk to the completion of the insertion and in the recording / reproducing state.

Next, 7 other than normal insertion in the present invention is described.
The following describes a method for preventing insertion of a wrong disk.

First, the slider opening / closing member is provided in a total of three directions, ie, one direction at the time of reverse insertion of the disk in the normal insertion direction and two directions of the front and back at 180 ° opposite to the normal insertion direction. Erroneous insertion is prevented.

On the other hand, except for the above three wrong insertion directions, the remaining four on the front and back sides in both the left and right rotation directions at 90 ° from the normal insertion direction.
The wrong insertion in the direction
The inclined surface of the V-shaped portion of the moving member is in a position where it can be brought into contact with the disk, and the protruding portion projecting laterally from the V-shaped portion is engaged with the inner surface of the holder when the disk is not inserted. Take position. When the disc is properly inserted, the second moving member is retreated to release the inhibition in conjunction with the retreating movement of the first moving member. Does not perform a retreating movement, so that the operation of the second moving member retreating in order to release the above-described blocking in conjunction with the first moving member is not performed.
Therefore, the release position in which the protruding portion retracts slightly from the engagement position to release the engagement state with the inner surface of the holder in conjunction with the movement of the first moving member when the disc is inserted is set to the release position. The operation of taking is not performed.

As a result, even if the inclined surface is pressed to insert the disk into the back, the disk can push up the inclined surface because the protrusion projecting sideways is engaged with the inner surface of the holder. This prevents the disc from being inserted.

Therefore, the position for preventing the erroneous insertion in the four directions can be set to the insertion port side, that is, the position very close to the position for preventing the erroneous insertion in the three directions.

Further, in the process of inserting the disk to the insertion preventing position, the urging force of the second moving means to the disk does not act, so that the disk can be smoothly inserted without giving unnecessary resistance to the insertion of the disk. Can be inserted.

[0039]

【Example】

Embodiment 1 FIGS. 1 to 1 show an embodiment of the present invention.
The following is a description based on 0.

The disk drive of this embodiment is, for example,
It is provided in a recording / reproducing apparatus for rotating and driving two types of recording media, such as a magneto-optical disk and an optical disk, to record / reproduce. The above-mentioned magneto-optical disks and optical disks include those having a disk body exposed such as a CD (Compact Disc) or those stored in a cassette such as a mini disk.
The present embodiment is directed to a disk stored in the latter cassette. Also, the optical disc of this embodiment is
A digital audio optical disc is intended for reproduction, and information is recorded on a read-only optical disc by forming irregularities during molding of the disc. The magneto-optical disk is
It is used for recording and reproduction, and recording and reproduction are possible by a magnetic field modulation method.

Here, the form of each disk will be described. First, as shown in FIGS. 9 and 10 (a) to 10 (e), the disk 1 as a read-only optical disk has a disk body 1a stored in a substantially rectangular parallelepiped cassette. The length L1 of the disc 1 is set to 68 mm, the width L2 is set to 72 mm, and the thickness L3 is set to 5 mm in the insertion direction (the direction of arrow C in FIG. 9) into the disc drive. The cassette is composed of an upper case 1b and a lower case 1c, and the disk main body 1a is rotatably stored between the upper case 1b and the lower case 1c.

The lower case 1c is provided with an insertion hole 1d for inserting a turntable 2b, which will be described later, while a gap between the upper case 1b and the disk body 1a is provided.
A clamping plate 1e for chucking the disk body 1a is provided.

When the turntable 2b is inserted into the center hole 1f of the disk body 1a through the insertion hole 1d, the magnet (not shown) provided on the turntable 2b side and the clamping plate 1e attract each other. Thus, the disk main body 1a is fixed to the turntable 2b. Therefore, by fixing the cassette in the disk drive device, the disk main body 1a does not come into contact with the upper case 1b and the lower case 1c, so that the turntable 2b
And the disk main body 1a is rotationally driven.

On the other hand, as shown in FIG. 9, a substantially U-shaped slider 1g sandwiching the upper case 1b and the lower case 1c is provided at the side end on the arrow A side of the disk 1 by the arrow C.
It is provided to be able to advance and retreat in the -D direction. An upper end surface on the arrow A side of the upper case 1b, which is a sliding surface of the slider 1g, and a lower end surface on the arrow A side of the lower case 1c,
Respective concave portions 1h for the slider movement are formed. Also, concave portions are formed on the lower end surface on the arrow A side of the upper case 1b and on the upper end surface on the arrow A side of the lower case 1c. As shown in FIG. 10 (e), the upper case 1b, the lower case 1c The claw portions 1j and 1j of the slider 1g are inserted into the slit 1i formed when are combined. The depth L4 of the slit 1i in the direction of arrow B shown in FIG. 10C is 3.2 mm.

On the other hand, slits 1k of the same shape are also formed on the end surface on the arrow B side of the disk 1, and these slits 1i and 1k guide a slider opening / closing portion 3d of a slider opening / closing mechanism described later. Has become.
Also, these slits 1i and 1k are as shown in FIG.
(D) As shown in (e), in order to avoid erroneous insertion, it is intentionally formed so as to be offset toward the upper case 1b. Further, the slit 1i is formed slightly longer than the slit 1k.

Here, when the disk 1 is inserted into the disk drive in the direction of arrow C, the slider 1g is pressed by the slider opening / closing portion 3d.
It is slid in the direction of arrow D. As a result, FIG.
As shown in FIG. 5, a window 1m formed in the lower case 1c is opened to expose the lower surface of the disk main body 1a, and light is irradiated from an optical pickup (not shown) provided below the disk main body 1a. Thus, the signal recorded on the disk main body 1a is reproduced. Conversely, when the disk 1 is removed from the disk drive, the slider 1g is urged in the direction of arrow C by a spring (not shown), so that the window 1m is automatically closed. .

As shown in FIG. 10C, a concave portion 1n into which a loading member (not shown) can be fitted is provided on the side surface on the arrow A side of the disk 1, and the disk 1 is recorded by a loading mechanism (not shown). It can be moved to the playback position.

Further, as shown in FIG. 10 (c), holes 1o and 1p are formed in the bottom surface of the disk 1 on the arrow C side and the arrow D side, and the optical pickup, the turntable 2b and the like are provided. The disc 1 is positioned by inserting cassette guide pins 2c and 2d on the attached chassis 2 to be described later.

On the other hand, the magneto-optical disk as the recording / reproducing disk 1 has a structure in which the upper piece of the slider 1g is extended, as shown in FIG. A window 1q is also formed in the case 1b. When the disk 1 moves in the direction of arrow C, as described above, the slider 1g moves in the direction of arrow D to expose the upper surface of the disk main body 1a, thereby facing the magnetic head (not shown). By the interaction between the magnetic head and the optical pickup,
Recording is enabled.

Next, a disk drive for driving each of the above disks will be described. The disk drive device,
As shown in FIGS. 2A and 2B, a holder 3 having a substantially rectangular frame capable of holding the disk 1 is provided on the upper side of the chassis 2. The holder 3 is attached to a base (not shown) by a holding member (not shown).
The base is provided with other recording heads (not shown), an optical pickup, a drive mechanism for driving the optical pickup, and the like.

A turntable 2b directly connected to the spin motor 2a is provided substantially at the center of the chassis 2, while cassette guide pins 2c and 2d are attached to both ends of the chassis 2 on the arrow C side and the arrow D side. ing. Then, the disc 1 is inserted from the non-insertion position of the disc 1 shown in FIG. 2A, and then guided to the holder 3 by a loading mechanism (not shown), whereby the disc 1 shown in FIG.
The sheet is conveyed to the recording / reproducing position shown in (b), and is positioned by the cassette guide pins 2c and 2d.

As shown in FIG. 3, the holder 3 has both ends on the arrow A side and the arrow B side formed in a U-shape, has regulating portions 3a and 3b on the lower side, and has the disk 1 with its width. It can be held with a small gap in the direction of L2 and thickness L3. As shown in FIGS. 4A and 4B, a deepest hanging part 3c is provided in the holder 3 on the deepest side (arrow C side) in the insertion direction of the disk 1.

Disk holder springs 7.8 for pressing the inserted disk 1 downward are attached to the holder 3 on both sides on the entrance side (arrow D side) in the insertion direction of the disk 1.

Further, as shown in FIG. 4B, the arrow A of the holder 3 near the disc pressing spring 8 is used.
A slider opening / closing spring 14 is attached to the side surface of the side, and the spring protrusion 14a holds the slider 1g of the disk 1 during loading.

In the holder 3, a slider opening / closing portion 3d as a slider opening / closing member to be fitted into the slits 1i and 1k on the side surface of the disk 1 is provided in the horizontal state in the vicinity of the slider opening / closing spring 14 on the arrow C side. It is provided bent.

Further, on the upper side of the holder 3, FIG.
As shown in (b), a substantially S-shaped slide lever 4 is provided. This slide lever 4 has a long hole 4a
4b and 4c, respectively, while each of the elongated holes 4a, 4b and 4c has a pin 3e extending from the holder 3.
3f and 3g are inserted, whereby the slide lever 4 is guided and moved in the direction of the arrow AB.

As shown in FIG. 4B, a spring 9 is provided between the spring hook 4d at the center of the slide lever 4 and the spring hook 3h of the holder 3. 9, the slide lever 4 is urged to pull in the direction of arrow B.

As shown in FIGS. 2A and 4B, an upright plate 4f as a first moving member is formed at the end of the slide lever 4 on the arrow A side. The standing plate 4f has a function as detecting means for the disk 1. That is, as shown in FIG. 6, the upright plate 4f extends inside the holder 3 so as to be located near the upper side of the slider opening / closing portion 3d in the direction of the arrow C in the holder 3. As shown in FIG. 4B, the upright plate 4f comes into contact with a concave portion 3i formed at the end of the holder 3 on the arrow A side by the urging force of the spring 9 in the direction of arrow B. , Slider opening and closing part 3d
Is located outside (in the direction of arrow A) the end surface on the side of arrow B in FIG.

4 (a) and 4 (b)
As shown in FIG.
j is formed, and a detection switch 6 as a detecting means for detecting insertion of the disk 1 is attached to the rising portion 3j. Then, the disk 1 shown in FIG.
In the state in which the slide lever 4 can be removed, the detection switch 6 is turned off, and the actuator 6a provided on the detection switch 6 is turned by the arrow A on the upright plate 4f of the slide lever 4.
With the movement in the direction, it is a position where it can advance in the direction of arrow A.

On the upper side of the end of the holder 3 in the direction of arrow B, a rotary lever 5 as a second moving member of the detecting means is provided. This rotating lever 5
The center hole 5a of the rotation center is inserted into the pin 3k rising from the holder 3 so as to be rotatable in the direction of the arrow EF, and the notch 5b formed at the end of the rotation lever 5 in the direction of the arrow C is formed. Rise 4 of slide lever 4
The rotation is regulated by inserting g. At the end of the rotary lever 5 in the direction of arrow D, a rotary lever hanging portion 5c bent toward the inside of the holder 3 is formed.

Accordingly, the rotary lever 5 is urged to rotate in the direction of arrow F about the center hole 5a by the pulling force of the spring 9, and the end surface of the rotary lever hanging portion 5c in the direction of arrow A is formed in the hole 3m of the holder 3. The rotation is restricted by abutting against the end face. When the rotating lever hanging portion 5c is in the abutting position on the end face of the hole 3m, the rotating lever hanging portion 5c takes a position where the rotating lever hanging portion 5c can abut on the disk 1 on the insertion path of the disk 1 into the holder 3. Insertion can be prevented.

On the other hand, the disk drive shown in FIG.
As shown in FIG. 1, a lid 10 for opening and closing an opening 11a of a device insertion section 11 provided on the front face is attached rotatably about a central axis 10a. The lid 10 is connected to the loading mechanism, and is appropriately opened and closed by a lid opening / closing mechanism (not shown) in the process of inserting and leaving the disc 1. The lid 1
0 is such that it does not come into contact with the holder insertion slot 3n even when rotated to the open state.

The operation of the above disk drive in the direction of correct insertion of the disk 1 (hereinafter referred to as "normal insertion") will be described below.

First, when the disk 1 is inserted in the direction of arrow C from the holder insertion opening 3n through the opening 11a of the apparatus insertion portion 11, the disk 1 moves while the outer frame thereof is regulated by the holder 3. Then, as shown in FIG. 1, after the slider opening / closing portion 3d of the holder 3 is fitted into the slit 1i of the disk 1, the outer frame of the disk 1 pushes the upright plate 4f of the slide lever 4 against the spring 9 by an arrow. Push in direction A to slide. Thereby, the actuator 6a of the detection switch 6 attached to the other end of the slide lever 4 moves in the direction of arrow A, the detection switch 6 is turned on, and the loading motor (not shown) is driven.

At this time, with the movement of the slide lever 4 in accordance with the movement of the upright plate 4f in the direction of arrow A, the rotation lever 5 rotates in the direction of arrow E around the center hole 5a. At the position where the switch 6 is turned on, the rotary lever hanging part 5c apparently escapes from the insertion path of the disk 1 in the holder 3 in the direction of arrow B, and the disk 1
Is not blocked. Therefore, the disc 1 is further moved in the direction of arrow C by a loading mechanism (not shown). At this time, the upright plate 4f of the slide lever 4 is pressed by the disk 1 in the direction of arrow A, and holds the position along the side surface of the disk 1.

Next, as shown in FIG. 5, at the time of recording / reproduction, the disc 1 is mounted on the holder 3 at the innermost position in the direction of arrow C. At this time, a slight gap is provided between the disk 1 and the deepest hanging part 3c of the holder 3, and the slide lever 4 is held at a position along the disk 1 as shown in FIG. I have. Further, at this time, the slider opening / closing section 3d of the holder 3 completes the slide by pressing the slider 1g (not shown) of the disk 1 in the direction of arrow D, and the optical pickup or the recording head enables recording and reproduction. It has become.

Conversely, when trying to remove the disk 1 guided to the recording / reproducing position, the loading motor (not shown) is driven by retreating the disk 1, and the procedure is substantially reverse to the above. Disc 1
Are unloaded so that they can be returned to the original removable state.

Next, detection of an erroneous insertion in the disk 1 will be described below. First, as shown in FIGS. 2A and 2B and FIG. 9, the direction in which the disc 1 can be inserted into the holder insertion slot 3n is determined by the insertion direction of the disc 1 (FIG. 9).
In the direction of arrow C), the length L1 is 68 mm and the width L2
Is a substantially rectangular parallelepiped of 72 mm, so that it is apparently possible to attempt insertion in seven different directions other than the normal insertion direction.

However, of the seven erroneous insertion directions described above, one direction of the reverse insertion from the normal insertion direction or two directions of the front and back rotation by 180 ° from the normal insertion direction is required. The width L2 and the thickness L3 of the disc 1 with respect to the holder insertion opening 3n have the same relationship as that of the regular insertion. Therefore, when the disc 1 is erroneously inserted in the three directions, as shown in FIGS. 6 and 7, the disc 1 is inserted into the upright plate 4f of the slide lever 4 on the insertion path of the disc 1 in the three directions. Shortly before the contact (in the direction of arrow D), that is, before the position where the detection switch 6 is turned on, it comes into contact with the slider opening / closing portion 3d provided on the holder 3 and hinders the insertion. Incorrect insertion of the direction is prevented.

As a wrong insertion direction different from the above three wrong insertion directions, when erroneous insertion in a total of four directions on each of the front and back sides in the right and left rotation directions at 90 ° with respect to the normal insertion direction is attempted, FIG. (A) As shown in FIG.
n when the relative width of the disc 1 is 72
mm and 68 mm. For this reason, the slider opening / closing portion 3d of the holder 3 has a positional relationship that does not hinder the insertion path of the disc 1 in these four directions, and the upright plate 4f of the slide lever 4 also has the arrow AB.
The disc 1 can be further inserted deeper into the holder 3 because the disc 1 does not abut in the direction.

However, at this time, the outer frame of the disk 1 abuts against the rotating lever hanging portion 5c of the rotating lever 5 at the opposite end (arrow B side) of the disk 1. As a result, insertion of the disc 1 is prevented.

When the insertion of the disc 1 is prevented by the rotary lever hanging portion 5c, the end of the disc 1 on the arrow D side is set to protrude outward from the lid 10. . For this reason, the user can easily take out the disc 1 by grasping the disc 1 with a finger or the like at the time of insertion and withdrawal.

In the case of the above-described erroneous insertion in the four directions, if the conventional disk drive tries to maintain the same amount of gripping (projection) of the disk 1 as in the present embodiment, the cover 10 is set to the same position. In the figure, it must be provided at the position indicated by the two-dot chain line. However, in this embodiment, the lid 10 is further moved by the dimension L5 from the conventional position to the holder insertion opening 3n.
It can be installed at a location away from

As described above, in the disk drive of this embodiment, in any of these seven types of erroneous insertion,
Since the detection switch 6 is not turned on to drive the loading motor as in the case of normal insertion, and the insertion position of the disc 1 is not deep, the user is immediately made to recognize the erroneous insertion and is prompted to retry insertion. It becomes possible.

As described above, in the disk drive device of the present embodiment, when the disk 1 is properly inserted, first, the slits 1i.
The slider opening / closing portion 3d fits into 1k, and the disc 1 is inserted further into the back. At this time, the slider 1g is pressed by the slider opening / closing portion 3d, guided by the slit 1i, moves parallel to the insertion direction, and exposes the disk main body 1a.

Next, the disk 1 is mounted on an upright plate 4f disposed outside the inner edge of the slider opening / closing portion 3d and further behind the insertion opening side edge of the slider opening / closing portion 3d in the insertion direction. Abut At this time, the erected plate 4f is pushed by the side surface of the disk 1 and retreats. At this time, the rotary lever 5 disposed on the insertion path of the disk 1 and having a positional relationship capable of preventing the insertion at a predetermined position moves the slider 1g along with the retreat movement of the standing plate 4f.
And interlock with each other to retreat to release the above-mentioned blockage. Therefore, the disc 1 can be inserted further into the back.

When the standing plate 4f is retracted, the detection switch 6 detects that the disc 1 has been inserted. As a result, the disc 1 is further inserted and moved, and then loaded by elevating movement to be driven to the recording / reproducing position.

On the other hand, seven types of discs 1 other than the normal insertion
Insertion is prevented as follows for erroneous insertion.

First, the slider 1 provided in the holder 3 is opened and closed in one direction when the disc 1 is inserted upside down in the normal insertion direction and in two directions upside down and 180 ° opposite to the normal insertion direction. The erroneous insertion can be prevented by the portion 3d as in the related art.

Next, except for the above three wrong insertion directions,
The disk 1 does not come into contact with the slider opening / closing portion 3d and the upright plate 4f because the relative width of the disk 1 is small with respect to erroneous insertion in the remaining four directions of each of the right and left rotation directions of 90 ° from the normal insertion direction. . Therefore, the disc 1 is inserted further into the back. However, at this time, the rotation lever 5
Have a positional relationship in which insertion of the disc 1 can be prevented on the insertion path of the disc 1. Then, in the case of the normal insertion of the disk 1, the rotary lever 5 is retracted to release the above-described inhibition in conjunction with the retracting movement of the standing plate 4f.
In the case of erroneous insertion, the upright plate 4f does not perform retreating movement, so that the operation of the revolving lever 5 retreating so as to release the above-mentioned inhibition in conjunction with the upstanding plate 4f is not performed. As a result, the disk 1 is prevented from being inserted by the rotating lever 5.

Accordingly, the length of the slit 1k of the disk 1 is longer than that of the conventional method in which a protrusion that can be fitted into the slit 1k only at the time of normal insertion is provided on the side of the disk 1 opposite to the slider 1g. Without being restricted by the above, it is possible to set the erroneous insertion preventing positions in the four directions to the insertion opening side, that is, positions very close to the erroneous insertion preventing positions in the three directions. For this reason, the difference in the amount of insertion of the disc 1 at the time of each of the above seven types of erroneous insertion prevention is small, and the user can easily recognize the erroneous insertion without feeling uncomfortable and withdraw the insertion.

Each of the erroneous insertion preventing positions is set in the holder 3.
When the user retracts the insertion of the disk 1, the device insertion portion 1 on the front of the disk drive device
The position 1 can also be set to a position that does not hinder the picking of the disk 1 with a finger. For this reason, a space is allowed between the position of the device insertion portion 11 of the disk drive device and the holder insertion opening 3n, which is advantageous in terms of design and freedom of installation of the opening / closing lid.

Further, since a plurality of detection switches are not required as in the related art, and only the detection switch 6 is used, it is possible to avoid a factor of cost increase such as a switch and a wiring material.

Embodiment 2 Another embodiment of the present invention is shown in FIG.
This will be described below with reference to FIG. For the sake of convenience, members having the same functions as those shown in the drawings of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The disk drive of this embodiment is similar to that of FIG.
As shown in (b), the slide lever 24 is formed substantially in an L shape. A lever notch 23 is formed at the end of the slide lever 24 on the arrow B side, and long holes 24b and 24c are formed on both sides of the slide lever 24 in the direction of arrow CD with the lever notch 23 interposed therebetween. Have been. Pins 3f and 3g rising from the holder 3 are inserted into the elongated holes 24b and 24c, respectively, so that the slide lever 24 is slidable in the directions of arrows AB.

A pin 3k is raised from the holder 3 through the lever notch 23, and the detection means and the rotary lever 25 as a second moving member rotate in the direction of the arrow EF around the pin 3k. Mounted freely. The rotation lever 25 is urged in the direction of arrow F by the spring 9 as in the first embodiment. The rotation lever 25 is located above the slide lever 24 as shown in FIG.

As shown in FIG. 14A, a washer 26 is attached to the pin 3k, and a spiral spring 27 is provided between the washer 26 and the rotary lever 25.
Are provided in a compressed state. Therefore, the rotation lever 25 is always pressed and urged inside the holder 3 (in the direction of arrow B).

The rotary lever 25 has a rotary lever V-shaped portion 25d at the end on the arrow D side as a V-shaped portion protruding into a hole 3m of the holder 3 in a V-shape. The tip portion 25e is in contact with the surface of the holder 3 by the urging force of the spiral spring 27.

The above-described rotary lever V-shaped portion 25d is
As shown in the figure, the holder 3 has a protruding portion 25f protruding toward the arrow A side, and a slight gap is provided between the protruding portion 25f and the inner surface of the holder 3. Also, the rotary lever V-shaped portion 25d is shown in FIG.
As shown in (b), when the disc 1 is inserted into the holder 3, the inclined surface 25g is formed so as to come into contact with the disc 1, so that the insertion of the disc 1 can be prevented. Has become.

The operation of inserting the disk 1 in the normal direction in the disk drive device having the above configuration will be described below.

First, when the disc 1 is inserted in the direction of arrow C from the non-inserted state of the disc 1 shown in FIG.
As shown in FIG. 2, similar to the first embodiment, the slide lever 2
4 is the actuator 6a of the detection switch 6
Is turned on by pressing in the direction of arrow A, and a loading motor (not shown) is driven.

At this time, the rotation lever 25 moves the upright plate 4f in the direction of the arrow A and the slide lever 24
Rotates in the direction of arrow E around the center hole 5a. When the detection switch 6 is turned on, the protruding portion 25f of the rotary lever 25 is
The hole 3m is separated from the end face in the direction of arrow A in the direction of arrow B, and has a positional relationship in which there is no obstruction above the protrusion 25f.

Next, as shown in FIG. 16 (b), the outer frame of the disk 1 contacts the inclined surface 25g of the rotary lever V-shaped portion 25d. When the disc 1 is further inserted in this state, as shown in FIG. 16C, the protruding portion 25f of the rotary lever V-shaped portion 25d does not catch on the inner surface of the holder 3, so that the rotary lever 25 is tilted by the arrow 25g by the inclined surface 25g. It is pushed up in the A direction.

Next, as shown in FIG. 13, at the time of recording / reproducing, the disc 1 is mounted on the innermost part of the holder 3 in the direction of the arrow C, as in the first embodiment. It is held at the moved position.

At this time, as shown in FIG. 16 (c), the lower end of the inclined surface 25g of the rotary lever V-shaped portion 25d is
The disk 1 is in a state of riding on the disk 1, and the force of the spiral spring 27 in the direction of arrow B causes the disk 1
Is pressed. Note that the pressing force of the spiral spring 27 is set to a load necessary for performing an operation in accordance with the pressing force on the disk 1 by the cassette pressing springs 7 and 8.

On the other hand, when trying to take out the disk 1 guided to the recording / reproducing position, the disk 1
, The loading motor (not shown) is driven, and the disc 1 is unloaded in a procedure substantially opposite to the above, whereby the disc 1 is unloaded.
Can be set in a state in which extraction is possible.

Next, detection of erroneous insertion of the disk 1 in the disk drive of the present embodiment will be described below.
In the present embodiment, of the seven types of erroneous insertion of the disc 1, one direction at the time of front and back insertion in the normal insertion direction, and two directions of the front and back at 180 ° opposite to the normal insertion direction, for a total of three directions,
Similarly to the first embodiment, the slider opening / closing portion 3d provided on the holder 3 is located on the insertion path of the disc 1 in the above-described three directions before coming into contact with the standing plate 4f of the slide lever 24 (arrow D side). ), That is, a positional relationship that is obstructive before the position where the detection switch 6 is turned on prevents insertion of erroneous insertion in three directions (see FIGS. 6 and 7).

On the other hand, in a case where erroneous insertion in a total of four directions, that is, right and left rotation directions of 90 ° from the normal insertion direction, other than the three erroneous insertion directions, a total of four erroneous insertion directions are shown in FIGS. 14 (a) and 14 (b). As shown in the drawing, when the disc 1 comes into contact with the inclined surface 25g of the rotating lever 25 in the direction of arrow C, the disc 1
Is prevented from being inserted.

As described above, the erroneous insertion in the seven directions is prevented. However, as shown in FIG. 16C, the lower end of the inclined surface 25g of the rotary lever 25 rides on the disk 1 to cause the arrow A of the spiral spring 27 to move. The biasing force in the direction can be obtained only when the disc 1 is properly inserted. Therefore, the disc 1 in the disc holding springs 7 and 8 of the holder 3
In the initial stage of insertion, the disc 1 can be inserted smoothly without giving an unnecessary resistance to the insertion force of the disc 1 into the holder 3 by minimizing the urging force of the disc 1. That is, at least the process of inserting the disk 1 up to the vicinity of the position where the detection switch 6 is turned on when the disk 1 is properly inserted, and the process of inserting the disk 1 up to the position where the disk 1 is prevented from being inserted at the time of the erroneous insertion described above. In both cases, the disc 1 can be inserted smoothly.

As described above, in the disk drive device of this embodiment, when the disk 1 is inserted in the normal insertion direction, the upright plate 4f performs the same operation as in the first embodiment, and the disk 1 Can be inserted into Thereafter, the disk 1 comes into contact with the inclined surface 25g of the rotary lever V-shaped portion 25d. At this time, the rotation lever 25 moves retreating in order to release the above-described inhibition in conjunction with the movement of the standing plate 4f via the slide lever 24. And this gives
Projection 25 projecting sideways from rotary lever V-shaped portion 25d
f takes a release position in which it is retracted slightly to the side from the engagement position where it is engaged with the inner surface of the holder 3, and there is no obstacle above. Therefore, the inclined surface 25g contacting the disk 1 is pushed upward with the insertion movement of the disk 1, whereby the disk 1 can be inserted further into the back. Thereafter, as in the first embodiment, the disk 1 is driven to the recording / reproducing position. At this time, the rotating lever 25 is moved from the middle of the insertion of the disc 1 to the completion of the insertion of the disc 1 and in the recording / reproducing state.
The lower end of 5d presses and biases the disk 1 to fix it.

Next, according to the present embodiment, 7
Incorrect insertion of the same disc is prevented as follows.

First, as in the first embodiment, the slider opening / closing portion is provided in three directions, ie, one direction when the disc 1 is inserted upside down in the normal insertion direction and two directions upside down at 180 ° opposite to the normal insertion direction. Erroneous insertion is prevented at 3d.

On the other hand, other than the above-mentioned three wrong insertion directions, the remaining four on the front and back sides in both the left and right rotation directions at 90 ° from the normal insertion direction.
For the erroneous insertion in the direction, the inclined surface 25g of the rotary lever V-shaped portion 25d of the rotary lever 25 on the insertion path of the disk 1 takes a position where the inclined surface 25g can contact the disk 1, and the rotary lever V-shaped portion 25d Projection 25f projecting sideways
Takes an engagement position in which the disk 1 is engaged with the inner surface of the holder 3 when the disc 1 is not inserted. When the disc 1 is properly inserted, the rotary lever 25 is retracted to release the above-described block in conjunction with the retracting movement of the upright plate 4f. Does not perform a retreating movement, so that the operation of the revolving lever 25 retreating in order to release the above-mentioned inhibition in conjunction with the upright plate 4f is not performed. Therefore, when the disc 25 is inserted, the protruding portion 25f moves a little laterally from the engagement position to release the engagement state with the inner surface of the holder 3 in conjunction with the movement of the upright plate 4f. The operation of taking the release position is not performed.

As a result, even if the inclined surface 25g is pressed to insert the disc 1 into the back, the projecting portion 25f projecting to the side
Are engaged with the inner surface of the holder 3, so that the disc 1
Cannot push up the inclined surface 25g, thereby preventing the disk 1 from being inserted.

Therefore, the position for preventing the erroneous insertion in the four directions can be set to the insertion port side, that is, a position very close to the position for preventing the erroneous insertion in the three directions.

In the process of inserting the disk 1 to the insertion preventing position, the urging force of the rotating lever 25 on the disk 1 does not act, so that no unnecessary resistance is applied to the insertion of the disk 1 and the disk 1 is smoothly inserted. The disc 1 can be inserted into the.

[0107]

According to the first aspect of the present invention, there is provided a disk drive device comprising:
As described above, the detection means is provided outside the inner edge of the slider opening / closing member and is provided further in the insertion direction than the insertion opening side edge of the slider opening / closing member. A first moving member which is pressed against the side surface of the disk when inserted and retracts to the side surface of the disk, and which is disposed on the insertion path of the disk and has a positional relationship capable of preventing insertion at a predetermined position; A second moving member that retreats in order to release the inhibition in conjunction with the retreating movement of the first moving member, and a detection switch that detects that a disc has been inserted by the movement of the first moving member. Configuration.

Thus, the slider opening / closing member provided on the holder is provided in a total of three directions, ie, one direction when the disk is inserted upside down in the normal insertion direction and two directions upside down at 180 ° opposite to the normal insertion direction. Thus, erroneous insertion can be prevented as in the conventional case.

In addition to the above three wrong insertion directions, the remaining four of the front and back sides in the left and right rotation directions by 90 ° from the normal insertion direction are different.
The disc is prevented from being inserted by the second moving member against erroneous insertion in the direction.

Therefore, the length of the slit in the disk is limited compared to the conventional method in which a protrusion on the side opposite to the slider of the disk is provided which can be inserted into the slit only during normal insertion. In addition, the erroneous insertion prevention position in the four directions is set to the insertion port side, that is,
The position can be set very close to the erroneous insertion prevention position in the direction. For this reason, the difference in the insertion amount of the disc at the time of each of the above seven types of erroneous insertion prevention is small, and there is an effect that the user can easily recognize the erroneous insertion and cancel the insertion without feeling uncomfortable.

Since the erroneous insertion preventing positions are not located on the back side of the holder, when the user retracts the disk, the position of the front surface of the disk drive unit does not hinder the user from picking the disk with his / her finger. Can be set to For this reason, the space between the position of the front surface of the disk drive device and the holder insertion opening can be made extra, which is advantageous in terms of design and freedom of installation of the opening / closing lid.

Further, since a plurality of detection switches are not required as in the related art and only a single detection switch is used, it is possible to avoid an increase in the cost of switches and wiring materials. .

As described above, in the disk drive device according to the second aspect of the present invention, in the disk drive device according to the first aspect, the second moving member is provided on the upper side of the holder and V-shaped inward through the hole of the holder. A V-shaped portion and a protruding portion protruding laterally from the V-shaped portion, and the inclined surface of the V-shaped portion takes a position on the insertion path of the disk where the inclined surface can contact the disk, When the disc is not inserted, the protruding portion takes an engagement position to be engaged with the inner surface of the holder, and when the disc is inserted, the protrusion engages with the inner surface of the holder in conjunction with the movement of the first moving member. In order to release the state, it takes the release position where it has retreated slightly to the side from the above engagement position, and the second moving member abuts on the inclined surface when the disk is inserted, thereby completing the insertion from the middle of the disk insertion. Until The fine recording reproduction state, a configuration in which the lower end of the V-shaped portion is formed so as to urge the pressing disc.

With this arrangement, in addition to the erroneous insertion directions in the three directions described above, the erroneous insertion in the remaining four directions on the front and back sides in each of the right and left rotation directions by 90 ° from the normal insertion direction is performed in order to insert the disc into the back. Even if is pressed, the disc cannot push up the inclined surface because the protrusion projecting sideways is engaged with the inner surface of the holder, thereby preventing the disc from being inserted.

Therefore, in addition to the effect of the first aspect, in the process of inserting the disc to the insertion preventing position, the second
Since no urging force is exerted on the disk by the moving means, there is an effect that the disk can be inserted smoothly without giving unnecessary resistance to the insertion of the disk.

[Brief description of the drawings]

FIG. 1 is a front view showing a structure of a disk drive device according to an embodiment of the present invention, showing a state where a disk is inserted halfway into a holder and a detection switch is turned on.

FIGS. 2A and 2B are bottom views showing a state in which a disk is inserted into a holder in the disk drive device. FIG. 2A shows a state in which the disk can be removed, and FIG. Things.

FIG. 3 is a side view of a holder of the disk drive device as viewed from a rear side.

FIGS. 4A and 4B show a state where the disk is inserted up to the position of the slider opening / closing portion in the disk drive device, wherein FIG. 4A is a plan view and FIG.

FIG. 5 is a front view showing a state when loading of a disk is completed in the disk drive device.

FIG. 6 is a bottom view showing a state where the disk drive device is erroneously inserted with the disk turned upside down with respect to the normal insertion direction and incorrectly inserted.

FIG. 7 is a bottom view showing a state in which the disk is erroneously inserted in the direction opposite to the normal insertion direction by 180 ° in the disk drive device.

FIGS. 8A and 8B show a state in which the disk is erroneously inserted in a rotation direction of 90 ° left from a normal insertion direction in the disk drive device, wherein FIG. 8A is a plan view and FIG. 8B is a front view.

FIG. 9 is an exploded perspective view showing a structure of a disk mounted on the disk drive.

10A and 10B show a structure of a disk mounted on the disk drive device, wherein FIG. 10A is a plan view, FIG. 10B is a left side view, FIG. 10C is a front view, and FIG. 10D is a right side view. (E) is a bottom view.

FIG. 11 is a front view showing the structure of a disk drive device according to another embodiment of the present invention.

FIG. 12 is a front view showing a state in which a disk is inserted halfway into a holder and a switch is turned on in the disk drive device.

FIG. 13 is a front view showing a state when loading of a disk is completed in the disk drive device.

FIGS. 14A and 14B show a state where a disk is erroneously inserted in a rotation direction of 90 ° left from a normal insertion direction in the disk drive device, wherein FIG. 14A is a plan view and FIG. 14B is a front view.

FIG. 15 is a side view of the holder of the disk drive device as viewed from a holder insertion port side.

FIG. 16 is a plan view showing a state in which the disk is properly inserted in the disk drive device, where (a) is a state before the disk comes into contact with the rotary lever V-shaped part,
(B) shows a state in which the disk is in contact with the inclined surface of the rotary lever V-shaped part, and (c) shows a state at the time of completing the loading.

FIGS. 17A and 17B show a conventional disk drive device, in which FIG. 17A is a plan view showing a state where a disk is properly inserted, and FIG. 17B is a bottom view showing a state where a disk is normally inserted.

FIG. 18 is a front view showing the structure of the disk drive.

FIG. 19 is a front view showing a state where the disk is inserted halfway into the holder and the first detection switch is turned on in the disk drive device.

FIG. 20 is a front view showing a state when loading of a disk is completed in the disk drive device.

FIGS. 21A and 21B show a state in which the disk is erroneously inserted in a rotation direction of 90 ° left from the normal insertion direction in the disk drive device, where FIG. 21A is a plan view and FIG. 21B is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc 1a Disc body 1i ・ 1k Slit 1g Slider 3 Holder 3d Slider opening / closing part (slider opening / closing member) 3m hole 3n Holder insertion opening 4 Slide lever 4f Standing plate (detection means, first moving member) 5 Rotating lever (detection means) , Second moving member) 6 Detection switch (detecting means) 6a Actuator 7.8 Disc holding spring 9 Spring 11 Device insertion part 25 Rotating lever (detecting means, second moving member) 25d Rotating lever V-shaped part (V-shaped part) 25f Projection 25g Slope

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shinichi Sako 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside Sharp Corporation (56) References JP-A-7-220347 (JP, A) (58) Field (Int.Cl. ⁶ , DB name) G11B 17/04

Claims (2)

(57) [Claims] 1. A cassette having a substantially rectangular parallelepiped shape in which a disk main body is rotatably housed, wherein said cassette has two side surfaces on an insertion leading end side and a thickness on a side surface of said cassette.
A slit is formed at a position deviated to one side in the thickness direction from the center of the direction, and a slider that is guided by the slit and moves in parallel with the insertion direction to expose the disk body for recording and reproduction is provided. The disk is provided to drive the provided disk from the removable position to the recordable / reproducible position, and when the disk is inserted in the correct insertion direction into the holder holding the disk, the slider is inserted into the slit and the slider is inserted. It has a slider opening and closing member for pressing, and when the disc is inserted by a predetermined amount, further inserts and moves the disc based on the detection signal of the detecting means for detecting insertion of the disc, and then moves up and down to the recording / reproducing position. In the disk drive device to be driven, the detecting means is disposed outside an inner edge of the slider opening / closing member. One than the insertion port side edge of the slider opening and closing member disposed in the insertion direction rear side, the first moving member is pressed by the side surface of the disc retracted moves to the side of the disk when the further disc is inserted a predetermined amount into the holder A position that is arranged on the insertion path of the disc and that can prevent the insertion at a predetermined position, and that, in conjunction with the retreating movement of the first moving member, retreats to release the blocking. 2. A disk drive device comprising: two moving members; and a detection switch for detecting that a disk has been inserted by the movement of the first moving member. 2. The second moving member includes a V-shaped portion provided on an upper side of the holder and protruding inwardly in a V-shape through a hole of the holder, and a protruding portion protruding laterally from the V-shaped portion. An engagement position at which the inclined surface of the V-shaped portion can be brought into contact with the disk on the insertion path of the disk, and the projection is engaged with the inner surface of the holder when the disk is not inserted. When inserting the disc, the first
In conjunction with the movement of the moving member, it takes a release position where it is retracted slightly from the engagement position to release the engagement state with the inner surface of the holder. The lower end of the V-shaped portion is formed so as to press and urge the disk during the time from the insertion of the disk to the completion of the insertion and in the recording / reproducing state due to the contact with the inclined surface at this time. 2. The disk drive according to claim 1, wherein: