JP2000123457A - Recording medium drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a recording medium from being inserted into a hold member when the hold member exists on a drive position and to prevent damage, etc., of a switch and other mechanisms placed in the hold member. SOLUTION: A control projection 15a is projected/formed on a tip of a drive chassis 15. When a holder 13 descends to arrive at the drive position, the control projection 15a is placed between a port P1 and the receiving hole 13a of the holder 13. Then, when a MiniDisk(MD) pack 1 is made to be inserted into the empty holder 13 in the state that the holder 13 is moved to the drive position as it is empty, the MD pack 1 is abutted on the control projection 15a. Thus, the further penetration of the MD pack 1 is prevented, and the damage of a pressing switch 19 on the drive chassis 15 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium driving apparatus such as an in-vehicle MD (mini-disc) player.
In particular, the present invention relates to a recording medium driving device that prevents a recording medium from being erroneously inserted when a holding member that guides the recording medium reaches a driving position.

[0002]

2. Description of the Related Art FIG. 6 is a plan view showing a drive unit of an in-vehicle MD player as a conventional recording medium drive device, and FIG. 7 is a drive unit showing a state in which a holder as a holding member is in a raised standby position. FIG. 8 is a side sectional view of the drive unit showing a state where the holder is lowered to the drive position.

In the drive unit U shown in FIGS. 6 to 8, a front panel P constituting a housing of an MD (mini-disc) player is provided at the right end (Y1 side) in the drawing. An MD pack 1 containing a magneto-optical disk is provided on the front panel P.
An insertion port P1 through which the is inserted and discharged is formed.

The drive unit U has a holder 3 and a disk drive unit 4 inside a mechanism chassis 2. The holder 3 is a holding member for the MD pack 1 and is formed in a box shape. The illustrated Y1 side is a receiving port 3a for receiving the MD pack 1. As shown in FIG. 7, when the holder 3 is raised and is at the standby position, the receiving port 3a faces the inside of the insertion port P1. The lower surface of the holder 3 is partially open, and a clamping plate provided at the center of the magneto-optical disk in the MD pack 1 guided and held by the holder 3 is exposed below the holder 3. I do.

[0005] The holder 3 is moved by a lifting drive means (not shown) between a standby position where the holder 3 is separated from the disk drive unit 4 as shown in FIG. 7 and a drive position where the holder 3 approaches the disk drive unit 4 as shown in FIG. It is moved up and down.

The holder 3 is provided with transfer means (not shown). When the holder 3 is at the standby position shown in FIG. 7 and the MD pack 1 is introduced from the receiving port 3a, the MD pack 1 is removed. The MD pack 1 that has been transferred in the Y2 direction by the transfer means and has been driven is discharged from the receiving port 3a by the transfer means at the standby position.

In the disk drive unit 4, a turntable 6 is provided on a drive chassis 5, and a spindle motor 7 for rotating the turntable 6 is fixed below the drive chassis 5. The drive chassis 5 is provided with a pickup (not shown) for reading signals recorded on a magneto-optical disk in the MD pack 1.

[0008] The MD player having the above-described structure normally operates as shown in FIG. 7 when the holder 3 is at the standby position.
D pack 1 is inserted from insertion port P1 of front panel P,
It is introduced into the holder 3 from the receiving port 3a. When the introduction of the MD pack 1 is detected, the MD pack 1 is pulled into the holder 3 by the transfer means, and the MD pack 1 is guided and held at a position overlapping the drive chassis 5.

When the MD pack 1 is held in the holder 3, a series of subsequent operations lowers the holder 3 toward the drive chassis 5 as shown in FIG. The clamping plate at the center of the magneto-optical disk is mounted on the turntable 6.

[0010] At the end of the drive chassis 5 on the Y1 side, a locating member 8 is provided on the X1 side in the figure.
A push switch 9 is provided on the two sides. The locate member 8 and the actuator 9a of the press switch 9 are
It protrudes from above the drive chassis 5. On the X1 side of the lower surface of the MD pack 1, a positioning hole 1a is formed in both the recording / reproducing pack and the reproduction-only pack. On the X2 side of the lower surface of the MD pack 1, an identification hole 1b is formed only in the recording / playback pack.

As shown in FIG. 8, when the holder 3 is lowered to the driving position, the positioning holes 1a of the MD pack 1 are moved.
Are fitted to the locate member 8 provided on the drive chassis 5, and the MD pack 1 is positioned. Also, MD
When the pack 1 is inserted upside down or when inserted sideways, the holder 3
When the holder 3 is lowered, the MD pack 1 does not hit the locate member 8 and the MD pack 1 is not forcibly pressed against the turntable 6. When the holder 3 reaches the drive position shown in FIG. 8, the pressing switch 9 determines whether the pack is a recording / reproducing pack.

[0012]

As described above, in this type of player, when the holder 3 is raised to the standby position as shown in FIG.
a, the MD pack 1 is introduced into the holder 3. When this introduction is detected, the MD pack 1 is drawn into the holder 3 by the transfer means, and after the MD pack 1 is further held in the holder 3, as shown in FIG. Descend. This is performed as a series of operations by the power of the motor.

Here, in the state of FIG. 7, it is assumed that the MD pack 1 is pulled out from the insertion port P1 immediately after the MD pack 1 is inserted into the holder 3 from the insertion port P1 and the receiving port 3a. At this time, when it is detected at the detection stage that the MD pack 1 has been inserted into the holder 3, the transfer means operates even though the MD pack 1 has been pulled out, and thereafter the holder is operated. 3 is lowered to the drive position shown in FIG.

When the MD pack 1 is inserted not in a normal orientation but in a horizontal orientation rotated by 90 degrees, the transfer means may not be able to hold the MD pack 1.
At this time, after the insertion of the pack is detected, the transfer means moves in the apparatus back direction (Y2 direction) without engaging with the MD pack 1 at all. In this case, the transfer means operates with a part of the MD pack 1 protruding from the insertion opening P1 and the tip part being held by the holder 3, and when the operation is completed, the holder 3 is moved to the driving position shown in FIG. Try to descend to However, since the MD pack 1 is hung on the insertion slot P1, a phenomenon occurs in which the holder 3 cannot be lowered. At this time, when the MD pack 1 protruding from the insertion opening P1 is pulled out from the inside of the holder 3, the empty holder 3 is then lowered to the driving position as shown in FIG.

In such a case, if an eject operation button (not shown) provided on the front panel P is pressed, the lifting / lowering driving means operates in reverse to return the holder 3 to the standby state shown in FIG. Can be. However, the user may perform an operation of inserting the MD pack 1 again from the insertion port P1 in a state where the empty holder 3 is lowered to the driving position in FIG.

Here, as shown in FIGS. 7 and 8, when the receiving port 3a of the holder 3 is separated from the insertion port P1 of the front panel P, the MD pack 1 is inserted in the state of FIG. When the MD pack 1 is inserted from the receiving port 3a, the holder 3
It can be inserted inside. At this time, the MD pack 1
If the push switch 9 is strongly pushed in two directions, the actuator 9a of the push switch 9 protruding into the holder 3 may be damaged or the actuator 9a may be pushed strongly from the side, so that the push switch 9 may fail.

Since the locate member 8 is provided on the X1 side in the holder 3, the MD pack 1 can be prevented from being forcibly inserted on the X1 side.
Therefore, the phenomenon that the tip of the MD pack 1 is pressed against the actuator 9a of the push switch 9 cannot be avoided.

Even if the push switch 9 is not provided, when the MD pack 1 is pushed into the holder 3 on the X2 side, other mechanisms in the holder 3 may be damaged or the holder 3 may be damaged. When the receiving port 3a is forcibly lifted from the drive chassis 5, the support member of the holder 3 or the lifting / lowering driving means may be broken.

An object of the present invention is to solve the above-mentioned conventional problem. When the holding member is at the driving position, the recording medium is prevented from being inserted into the holding member, and is positioned inside the holding member. It is an object of the present invention to provide a recording medium driving device that can prevent breakage of switches and other mechanisms.

[0020]

SUMMARY OF THE INVENTION The present invention provides a drive chassis having a turntable on which a recording medium is mounted;
A holding member that guides and holds the recording medium facing the drive chassis to the position facing the turntable, and a standby member that holds the holding member at a position away from the drive chassis and capable of receiving the recording medium. A lifting drive means for moving the recording medium held close to the drive chassis from the position to a driving position for mounting the turntable on a turntable, and a recording medium driving device provided with
The drive chassis is provided with a restriction for blocking an introduction path of the recording medium to the holding member when the holding member is at the driving position, and separating from the introduction path when the holding member moves to the standby position. A member is provided.

The recording medium according to the present invention is, for example, an MD or the like in the form of a pack stored in a cartridge, a disk not stored in a cartridge, or a tape cassette in which a magnetic tape is exposed by opening a lid. . Further, the holding member may be a box-shaped member for holding the recording medium to be introduced, or may be constituted by a pair of guide members for guiding and holding only both side portions of the recording medium. Is also good.

In addition, a panel having an insertion opening through which a recording medium can be inserted toward the holding member is provided in front of the holding member, and the regulating member is provided between the holding member and the insertion opening. Preferably, it is provided.

In particular, when the insertion port and the receiving port of the holding member are separated from each other, the restricting member is disposed between the insertion port and the receiving port, so that the holding member in the driving position from the insertion port is provided. It is possible to effectively prevent the recording medium from being inserted toward the receiving port of the member. However, the regulating member may be provided inside the holding member at the driving position and at a position close to the receiving port side and at a position that does not hit the normally held recording medium.

According to the present invention, the drive chassis is provided with a switch whose output is switched by a recording medium held by the holding member when the holding member is moved to a driving position. This is particularly effective when the switch is arranged on the near side of the recording medium introduction direction with respect to the switch. In this case, it is possible to prevent the switch from being forcibly pressed by a recording medium that is erroneously inserted.

Further, the regulating member may be formed integrally with the drive chassis, or may be fixed to the drive chassis. Alternatively, the regulating member operates so as to protrude from the drive chassis toward the holding member by using a lowering force for lowering the holding member to the driving position, or an elevating drive unit for lowering the holding member to the driving position. May be operated so as to be protruded from the drive chassis into the holding member by the operation of the mechanical component constituting the above.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a drive unit of an MD player as an embodiment of a recording medium drive device according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a plan view showing a holder and an MD pack inside the drive unit, FIG. 4 is a side sectional view of the drive unit showing a state where the holder as a holding member is at a raised standby position, and FIG. 5 is a side sectional view of the drive unit showing a state where the holder is at a lowered drive position.

Inside the mechanism chassis 12 of the drive unit U shown in FIG. 1, a holder 13 which is a holding member for the MD pack 1 (recording medium), and a rotational drive of a magneto-optical disk (not shown) in the MD pack 1 And a disk drive (drive means) 14 for reproducing information.

The portion of the holder 13 facing the front panel P is a receiving port 13a for receiving the MD pack 1 (see FIG. 3). Inside the holder 13, a holding member 20 for holding the concave portions formed on both sides of the MD pack 1 when the MD pack 1 is introduced in a normal posture is provided. The holding member 20 is connected to the transfer arm 21 by a connecting pin 21c shown in FIG. The transfer arm 21 is provided on the upper surface of the holder 13 with a rotating shaft 21a.
And are rotatably supported.

By the rotation of the transfer arm 21 in the α1-α2 direction, the holding member 20 is moved in the illustrated Y1 and Y2 directions. When the holding member 20 is pulled in the Y2 direction by the transfer arm 21, the MD pack 1 held by the holding member 20 is guided and held inside the holder 13. On the other hand, when the holding member 20 is moved in the Y1 direction by the transfer arm 21, the MD pack 1 is discharged from the receiving port 13a of the holder 13. The holding member 20 and the transfer arm 21 constitute a transfer unit of the MD pack 1 as a recording medium.

The drive chassis 15 constituting the disk drive unit 14 is elastically supported by a plurality of elastic support members 22 such as dampers and spring coils provided inside the mechanism chassis 12, and is generated when the vehicle runs. This is configured so that the vibrating vibration does not directly act on the drive chassis 15. On the lower surface of the drive chassis 15,
A spindle motor 17 is provided, and a tip of a rotation shaft of the spindle motor 17 projects above the drive chassis 15, and a turntable 16 is fixed to the rotation shaft.

On the Y1 side facing the front panel P, one side of the drive chassis 15 (X1
Side), a locate member 18 is provided, and a push switch 19 is provided on the other side (X2 side in the figure). The actuator 19a of the press switch 19 protrudes upward (Z1 direction) from the drive chassis 15.

The receiving port 13a of the holder 13 is located near the actuator 19a and on the front panel P side of the actuator 19a.
Between the insertion slot P1 formed in the front panel P, a regulation projection (regulation member) 15a is formed integrally with the drive chassis 15 by cutting and raising a part of the drive chassis 15 and bending the drive chassis 15 upward. Have been.

The height of the restricting projection 15a is determined as follows. As shown in FIG.
When the device is at the standby position away from the drive chassis 15, the receiving opening 13a of the holder 13 has the entire opening dimension disengaged from the restricting projection 15a, and the pack introduction path from the insertion opening P1 opening to the front panel P to the holder 13. Do not disturb. On the other hand, as shown in FIG. 5, when the holder 13 is at the drive position lowered to the drive chassis 15, the restricting projection 15a is located in front of the receiving opening 13a of the holder 13, and the holder 13 is received from the insertion opening P1. Mouth 1
The pack introduction path to 3a is shut off. The height dimension of the regulating protrusion 15a is set so that any of these conditions is satisfied.

Sliding plates 10a and 10b are provided on both sides of the drive unit U in the X1 and X2 directions, respectively. The sliding plates 10a and 10b can move in the same direction in the Y direction in the drawing or in the opposite directions to each other. The holder 13 and the drive chassis 15
Are supported in sliding grooves (not shown) formed in the sliding plates 10a and 10b, respectively. This sliding groove is Y
As the sliding plates 10a and 10b move in the Y direction, the holder 13 moves away from the drive chassis 15 as shown in FIG. 5, it is moved up and down between a drive position approaching the drive chassis 15. The sliding plates 10a and 10b are driven in the Y direction by the power of a motor M shown in FIG. The motor M and the sliding plates 10a and 10b constitute an elevating drive unit that drives the holder 13 up and down.

The one sliding plate 10b and the transfer arm 21 are connected by a connecting pin 21b, and the transfer arm 21 is rotated by the sliding force of the slide plate 10b. As a result, when the sliding plates 10a and 10b are driven by the rotational force of the motor M, the transfer arm 21
The operation of pulling in and transporting the MD pack 1 by the holding member 20 and the operation of lowering the holder 13 to the driving position shown in FIG. 5 are performed as a series of operations.

In the standby state before the MD pack 1 is inserted, the holder 13 is at a standby position separated upward from the drive chassis 15 as shown in FIG. , And faces the insertion opening P1 of the front panel P. When in this standby position,
The transfer arm 21 is rotated in the α1 direction as shown in FIG. 1, and the holding member 20 is located on the receiving port 13a side (Y1 side) of the holder 13.

In this standby state, the MD pack 1 is inserted into the insertion opening P1 of the front panel P, and the leading end of the MD pack 1 is inserted into the receiving opening 13a of the holder 13 at a position away from the insertion opening P1. You. At this time, when the MD pack 1 is put in a normal posture, the concave portions formed on both sides of the MD pack 1 are held by the holding members 20. When the transfer arm 21 is rotated in the α2 direction in FIG. 1 through the holding member 20 by the pushing force of the MD pack 1, the auxiliary member 23 connected to the transfer arm 21 rotates in the β direction about the shaft 23a. Then, the pressing of the switch SW1 is released.
The switch signal for releasing the pressing detects that the MD pack 1 has been inserted into the holder 13. Then, the motor M is started, and the sliding plates 10a and 10b are driven in the Y direction. The transfer arm 21 is further rotated in the α2 direction by the moving force of the one slide plate 10b, whereby the holding member 20 moves in the Y2 direction, and the MD pack 1 held by the holding member 20 Is guided in the Y2 direction to the position facing the turntable 16 and held by the holder 13.

After the holding member 20 moves in the holder 13 in the Y2 direction and the MD pack 1 is held by the holder 13,
When the sliding plates 10a and 10b further move, the holder 13 is lowered toward the drive chassis 15 by the sliding grooves formed in the sliding plates 10a and 10b as shown in FIG.

At this time, the clamping plate at the center of the magneto-optical disk in the MD pack 1 is
4 is mounted on the turntable 16. Further, a positioning hole 1a formed in the bottom of the MD pack 1 inserted in a normal posture fits into a locate member 18 provided in the drive chassis 15. If the MD pack 1 is held in the holder 13 in an abnormal state in which the MD pack 1 is turned upside down or turned 90 degrees, the positioning hole 1a does not fit with the locate member 18 and the MD pack 1 and the locate member 18 The holder 13 cannot be lowered to the driving position shown in FIG. In this case, it is determined that the insertion is abnormal, the holder 13 is raised, and the MD pack 1 is discharged.

In the case of the MD pack 1 for recording and reproduction, the actuator 19a is inserted into the identification hole 1b on the lower surface of the MD pack 1, and the pressing switch 19 is turned off. On the other hand, in the case of the MD pack 1 for reproduction only, since the identification hole 1b is not provided, the actuator 1
9a is pushed by the MD pack 1 and turned on. As described above, whether the inserted MD pack 1 is for recording and reproduction is determined depending on whether the switching output of the push switch 19 is ON or OFF.
Alternatively, it is detected whether it is a reproduction-only one.

By the above operation, M is displayed on the turntable 16.
When the magneto-optical disk in the D-pack 1 is loaded, the magneto-optical disk is driven to rotate together with the turntable 16 by the spindle motor 17 of the disk drive 14, and is picked up by a pickup (not shown) provided in the disk drive 14. The information in the magneto-optical disk is reproduced. At this time, the regulation protrusion 15a of the drive chassis 15 is located further on the Y1 side than the Y1 side end surface of the MD pack 1 held by the holder 13. Therefore, the MD pack 1 does not collide with the restricting projection 15a when the holder 13 moves up and down. Here, the abnormal insertion operation of the MD pack will be described.

The MD pack 1 is inserted into the holder 13 from the insertion opening P1 in a normal posture, the holding member 20 is pressed by the tip of the MD pack 1, the transfer arm 21 is rotated in the α2 direction, and the auxiliary member is When the switch 23 moves away from the switch SW1, the insertion of the MD pack 1 is detected and the sliding plates 10a and 10b are started by the power of the motor M, and the transfer arm 2 is moved.
1 rotates in the α2 direction, and the holding member 20 starts moving in the Y2 direction. At this time, when the MD pack 1 is artificially pulled out from the insertion opening P1, the engagement between the holding member 20 and the MD pack 1 is released, and only the holding member 20 moves in the Y2 direction. As it is, the sliding plates 10a and 10b continue to operate, and the holder 13 is lowered to the drive chassis 15 as shown in FIG.

Alternatively, in the state shown in FIG. 4, the MD pack 1 is inserted from the insertion port P1 into the holder 13 in the horizontal direction with the direction changed by 90 degrees.
Similarly, when inserted in the holding member 20 is pressed,
The output of the switch SW1 is switched, the motor M starts, and the holding member 20 moves in the Y2 direction. At this time,
Since the holding member 20 starts to move in the Y2 direction without the leading end of the MD pack 1 being held by the holding member 20, a part of the MD pack 1 inserted in the wrong direction remains in the holder 13 and a part of the MD pack 1 is inserted. Remain protruding from the insertion port P1. In this state, when the holding member 20 moves in the Y2 direction, the sliding plates 10a and 10b further operate to lower the holder 13 to the driving position shown in FIG. Because it is caught between 13 and
The holder 13 cannot be lowered. After that, when the MD pack 1 is pulled out from the insertion slot P1, the empty holder 1 is removed.
3 descends to the drive position shown in FIG.

When the eject operation button (not shown) is pressed in a state where the empty holder 13 is lowered, the motor M rotates in the reverse direction, and the same operation as the discharging operation of the MD pack 1 is performed.
The holder 13 returns to the standby position in FIG. Alternatively, upon detecting that the focusing operation of the pickup is not completed within a predetermined time, the motor M rotates in the reverse direction, and the holder 13 returns to the standby position.

However, with the empty holder 13 lowered to the driving position shown in FIG. 5, the MD pack 1 may be inserted again from the insertion port P1. As shown in FIG. 5, when the MD pack 1 is inserted obliquely downward from the insertion port P1 when the reception port 13a of the holder 13 and the insertion port P1 are separated from each other, the tip enters the reception port 13a. Will be.

However, at this time, on the X2 side, since the regulating projection 15a faces the front of the receiving port 13a and blocks the introduction path of the MD pack 1, the leading end of the MD pack 1 is restricted to the regulating projection 15a. In the holder 13. Therefore, the actuator 19a of the push switch 19 located on the X2 side is
Therefore, it is possible to prevent breakage or the like without being forcibly pushed. On the X1 side, the drive chassis 1
Since the locate member 18 protrudes from 5, the MD pack 1 is not forcibly inserted into the holder 13 on this side as well.

The restricting projection 15a may be a pin protruding above the drive chassis 15, and may be fixed and attached to the drive chassis 15. Alternatively, a regulating protrusion (regulating member) is provided on a mechanism such as an arm that is driven by a force for lowering the holder 13 to the driving position shown in FIG. 5 or a moving force of the sliding plate 10b.
It may project in front of the receiving opening 13a of the holder 13 in conjunction with the lowering operation of the holder 13.

[0048]

According to the present invention described in detail above, when the holding member is moving to the driving position in an empty state, the recording medium is not forcibly inserted into the holding member at this position. Also, it is possible to prevent a mechanism or a switch located in the holding member from being damaged. It is also simple to provide a regulating member on the drive chassis and to set the height of the regulating member so as to block the introduction path of the recording medium to the holding member only when the holding member reaches the drive position. A mechanism can prevent the recording medium from being inserted.

[Brief description of the drawings]

FIG. 1 is a plan view showing a drive unit of an MD player as an embodiment of a recording medium driving device according to the present invention;

FIG. 2 is a front view of FIG. 1,

FIG. 3 is a plan view showing a holder and an MD pack inside the drive unit;

FIG. 4 is a side sectional view of the drive unit showing a state where the holder is at a standby position;

FIG. 5 is a side sectional view of the drive unit showing a state where the holder is in a drive position.

FIG. 6 is a plan view showing a drive unit of an MD player as a conventional recording medium drive,

FIG. 7 is a side cross-sectional view of the drive unit showing a state where the holder is at a standby position.

FIG. 8 is a side sectional view of the drive unit showing a state where the holder is in a drive position.

[Explanation of symbols]

 Reference Signs List 1 MD pack (recording medium) 13 Holder (holding member) 13a Receiving port 14 Disk drive unit (drive means) 15 Drive chassis 15a Restriction projection (restriction member) 16 Turntable 18 Locate member 19 Press switch (switch) 19a Actuator U drive Unit P Front panel P1 insertion slot

Claims (4)

[Claims] A drive chassis having a turntable on which a recording medium is mounted; a holding member for guiding and holding the recording medium facing the drive chassis to a position facing the turntable; Lifting and lowering drive means for moving the holding member from a standby position distant from the drive chassis and capable of receiving the recording medium to a drive position for mounting the recording medium held close to the drive chassis on the turntable; In the recording medium driving device provided with, the drive chassis side, when the holding member is in the driving position, shuts off the introduction path of the recording medium to the holding member, the holding member is in the standby position A recording medium driving device, further comprising a regulating member that moves away from the introduction path when moving. 2. A panel having an insertion opening through which a recording medium can be inserted toward the holding member is provided in front of the holding member, and the regulating member is provided between the holding member and the insertion opening. The recording medium driving device according to claim 1, wherein the recording medium driving device is provided. 3. The drive chassis is provided with a switch whose output is switched by a recording medium held by the holding member when the holding member moves to a driving position. 2. The device according to claim 1, wherein the switch is located closer to the introduction side of the recording medium than the switch.
Or the recording medium drive according to 2. 4. The recording medium driving device according to claim 1, wherein said regulating member is formed integrally with said drive chassis.