JP3497354B2 - Disk recording and playback device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk recording / reproducing apparatus which produces noise (lattle noise) between a recording medium and a case when vibration or shock is applied.

[0002]

2. Description of the Related Art In recent years, occupancy inside a vehicle has been dramatically improved by improving the sealing performance of a passenger car and reducing noise of an engine. As a result, quietness is maintained inside the vehicle even while the vehicle is running, and comfortable running is enabled. In addition, it has been widely practiced to mount a disk recording / reproducing device or the like on a passenger car or the like and listen to music or the like while traveling.

FIG. 25 and FIG. 2 show an on-vehicle mini disk reproducing apparatus with a disk changer function which is currently on the market.
6, and FIG. 2 which is an explanatory view of the present invention.

As shown in FIG. 25 and FIG. 26, the mini disc reproducing apparatus is provided with a disc housing portion 104 and a disc reproducing portion 105. The disc storage section 10
4, a plurality of cartridge holders 113 (corresponding to the cartridge holders 13 in FIG. 2) for mounting disk cartridges are stacked. A disc insertion opening 103 for inserting and ejecting a disc cartridge is provided corresponding to the cartridge holder 113.
The disc reproducing unit 105 is provided with a member such as a turntable 111 for recording / reproducing a mini disc.

Each of the cartridge holders 113 is in a standby position of the disc storage unit 104 with one disc cartridge mounted, and when recording / reproducing is instructed, the disc holder 105 is directly above the turntable 111 (recording / reproducing position). ) To the disk cartridge.
Then, when the disk replacement is instructed, the disk returns to the standby position.

In addition to the above-mentioned cartridge holder type, there is a magazine type as a vehicle-mounted mini disk reproducing apparatus having a disk changer function.

[0007]

However, in the in-vehicle mini-disc reproducing apparatus with the disc changer function of the above-mentioned conventional structure, when the passenger car or the like is run with the disc cartridge housed in the mini-disc reproducing apparatus, the disc cartridge is The vibration causes the disc to collide with the cartridge case, causing a problem that a rattling noise is generated.

Here, as shown in FIG. 23 which is an explanatory view of the present invention, a disc cartridge 90 of a mini disc.
Is a structure in which a disc 91 is stored in a cartridge case 94 (upper case 94a / lower case 94b).

The positional relationship between the disk 91 and the cartridge case 94 will be described below with reference to FIG. 24, which is an explanatory view of the present invention.

As shown in FIG. 24A, when the disc is recorded / reproduced at the recording / reproducing position of the mini-disc reproducing apparatus, the disc 91 has an upper case 94a and a lower case 9
Since it is necessary to rotate between 4b, between the disc 91 and the cartridge case 94,
There is a gap.

On the other hand, as shown in FIG. 24B, when the disk is in the standby position and recording / reproducing is not performed, the disk 91 is placed in the cartridge case 94.
It is possible to move by the amount of the above gap. Therefore, when vibration is applied, the disk 91 collides with the cartridge case 94 (A). Then, at this time, a collision sound is generated. This is the rattle sound. In particular, since there is a sufficient distance between the side surface of the disk 91 and the inner surface of the side portion of the cartridge case 94, the disk 91 is the largest cause of rattle noise.

However, the disk cartridge 90
Does not take any measures against this rattle sound.

In addition, the conventional cartridge holder type mini disk reproducing apparatus is a disk cartridge 90.
Is only attached to the cartridge holder 113, and the disk 91 at the standby position is not held and fixed. The same applies to a magazine-type mini disk reproducing device.

Therefore, in the conventional disc recording / reproducing apparatus, when a passenger car or the like is run with the disc cartridge 90 stored in the standby position, the disc 9 is vibrated due to vibration.
1 is swung up, down, left, right, up and down, and the cartridge case 94
It is inevitable that the rattle noise is generated by the collision with the.

When the recording / reproducing is not performed, if the disc cartridge 90 is taken out from the mini disc reproducing device each time, the above-mentioned problem does not occur.
Most of them are left as they are because they are quite troublesome. As described above, due to the dramatic improvement in habitability of passenger cars and the like in recent years, high quietness has been realized even while traveling. However, if the rattle noise is constantly generated, the quietness is lost, and only this noise becomes particularly unpleasant, so that the driver cannot concentrate on driving a passenger car or the like, which may lead to an inadvertent traffic accident.

The present invention has been made to solve the above problems, and its purpose is to mitigate or significantly reduce noise (lattle noise) generated between the disk and the cartridge case when vibration or shock is applied. An object is to provide a disk recording / reproducing device that can reduce the number.

[0017]

In order to solve the above problems, a disk recording / reproducing apparatus of the present invention is a recording medium in which a clamping plate made of a magnetic material is fixed in a center hole in a cartridge case. In a disc recording / reproducing apparatus which mounts a disc cartridge storing a disc at a standby position and conveys the disc cartridge from the standby position to a recording / reproducing position for recording / reproducing, a clan of the disc cartridge at the standby position. Above the clamping plate through the ping plate
When the surface is brought into contact with the inner surface of the upper part of the cartridge case,
Together, top Symbol cartridge case the side surface of the disk
It is characterized in that a disc fixing means is provided for preventing the disc from colliding with the cartridge case by fixing the disc in a state of being brought into contact with the inner surface of the side portion .

With the above structure, the disc fixing means can prevent the disc from colliding with the cartridge case via the clamping plate with respect to the disc cartridge at the standby position of the disc recording / reproducing apparatus.

Thus, even if the disc recording / reproducing apparatus is mounted on a passenger car or the like and the disc cartridge is run with the disc cartridge inserted in the cartridge holder and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other. It is possible to prevent the generation of rattle noise, which has been a problem in the past.

As described above, the user can travel comfortably with the disc cartridge still inserted, and the troublesome removal of the disc is unnecessary, so that the burden on the user can be greatly reduced. Therefore, the driver can be freed from mental annoyance and can concentrate on driving a passenger car or the like, which is useful for preventing inadvertent traffic accidents.

Further, in the disc recording / reproducing apparatus of the present invention , the disc fixing means is provided near the clamping plate of the disc cartridge at the standby position.
Is provided and the clamping plate is inserted into the turntable.
The magnet is characterized in that it is a magnet that is attracted and fixed by shifting from the center of the insertion hole .

[0022] According to the above configuration, further, the clamping plate of the disk cartridge in the standby position is adsorbed and fixed by the magnet provided in the vicinity thereof. As a result, the disc of the disc cartridge at the standby position is apparently fixed to the cartridge case,
The movement in the front-back, left-right, and up-down directions is restricted.

Thus, the magnets attract and fix the clamping plate to the disc cartridge at the standby position of the disc recording / reproducing apparatus, so that the disc can be prevented from colliding with the cartridge case.

Thus, even if the disc recording / reproducing apparatus is mounted on a passenger car or the like and the disc cartridge is run with the disc cartridge inserted into the cartridge holder and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other. It is possible to prevent the generation of rattle noise, which has been a problem in the past.

In addition, since it suffices to provide the magnet in the vicinity of the clamping plate of the disk cartridge at the standby position, the disk recording / reproducing apparatus does not become large and functions stably.

As described above, the user can travel comfortably with the disc cartridge still inserted, and the troublesome removal of the disc is unnecessary, so that the burden on the user can be greatly reduced. Further, it can be easily mounted on the disc recording / reproducing apparatus. Therefore, the driver can be freed from mental annoyance and can concentrate on driving a passenger car or the like, which is useful for preventing inadvertent traffic accidents.

Further, in the disc recording / reproducing apparatus of the present invention , the disc fixing means is in the standby position.
Turn to the clamping plate of the disc cartridge
Engage through the table insertion hole to allow the disc to
An engagement means for pressing and fixing the inner surface of the trig case is provided.
It is characterized by being.

[0028] According to the above configuration, further, the clamping plate of the disk cartridge in the standby position, the motor
The cartridge table is inserted by the engaging means through the hole table insertion hole.
It is pressed into the bag case. As a result, the disk of the disk cartridge in the standby position is apparently fixed to the cartridge case, and cannot move in the front, rear, left, right, and up and down directions.

Therefore, the engaging means presses and fixes the clamping plate to the disk cartridge at the standby position of the disk recording / reproducing apparatus, thereby preventing a collision between the disk and the cartridge case. it can.

Therefore, even if the disc cartridge is inserted into the cartridge holder and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other, so that it is possible to prevent the rattling sound from being generated. it can.

Further , the disk recording / reproducing apparatus of the present invention is
Clamping cartridge made of magnetic material
A disc that is a recording medium with the rate fixed in the center hole.
Install the disc cartridge containing the
The disc cartridge from the standby position.
Disc recording / reproducing device for recording / reproducing by transporting to a raw position
In, one by one said disk cartridge is mounted, the cartridge holder for transporting between the standby position and the recording and reproducing position, the clamping plate
It is characterized in that a magnet for adsorbing and fixing is provided.

With the above structure, the clamping plate of the disk cartridge at the standby position is attracted and fixed by the magnet provided at the position corresponding to the clamping plate of the cartridge holder. As a result, the disc of the disc cartridge at the standby position is apparently fixed to the cartridge case, and the movement in the front, rear, left, right, and up and down directions is restricted.

While the disc cartridge is mounted on the cartridge holder, the disc is always adsorbed and fixed while moving from the standby position to the recording / reproducing position.
When the clamping plate is placed on the turntable, it is attracted by the suction force of the turntable.

As described above, since the magnet adsorbs and fixes the clamping plate to the disk cartridge at the standby position of the disk recording / reproducing apparatus, the collision between the disk and the cartridge case can be prevented.

Therefore, when the disc cartridge is inserted into the cartridge holder and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other, so that it is possible to prevent the rattling sound which is a conventional problem. it can.

In addition, since the magnet is integrally provided with the cartridge holder in the vicinity of the clamping plate of the disc cartridge, the disc recording / reproducing apparatus does not become large and functions stably.

Further, in the disc recording / reproducing apparatus of the present invention , the magnet is provided on the cartridge holder.
Installed at a position that is offset from directly above the clamping plate.
The clamping plate of the turntable insertion hole.
By shifting from the center and sucking,
The side surface was brought into contact with the inner surface of the side portion of the cartridge case.
It is characterized by being adsorbed and fixed in a state .

[0038] According to the above configuration, further, the clamping plate of the disk cartridge in a standby position, de
The side surface of the disk against the inner surface of the side of the cartridge case.
It is adsorbed and fixed in the closed state. As a result, the disc of the disc cartridge in the standby position is pressed and fixed to the inner surface of the cartridge case, and cannot move in the front, rear, left, right, and up and down directions.

Therefore, the magnet attracts and fixes the clamping plate to the disk cartridge at the standby position of the disk recording / reproducing apparatus, thereby preventing the disk from colliding with the cartridge case.

As a result, even if the disc recording / reproducing apparatus is mounted on a passenger car or the like and the disc cartridge is run while the disc cartridge is inserted into the cartridge holder and the disc cartridge is vibrated, the disc and the cartridge case do not collide. It is possible to prevent the generation of rattle noise, which has been a problem in the past.

As described above, the user can travel comfortably even with the disc cartridge inserted, and the troublesome removal of the disc is unnecessary, so that the burden on the user can be greatly reduced. Further, it can be easily mounted on the disc recording / reproducing apparatus. Therefore, the driver can be freed from mental annoyance and can concentrate on driving a passenger car or the like, which is useful for preventing inadvertent traffic accidents.

Further , the disk recording / reproducing apparatus of the present invention is
In the cartridge case, a disk cartridge, in which a disk as a recording medium is stored, in which a clamping plate made of a magnetic material is fixed in a central hole, is mounted at a standby position, and the disk cartridge is moved from the standby position to a recording / reproducing position. In a disc recording / reproducing apparatus for carrying and recording / reproducing, the concave portion of the clamping plate is engaged through the turntable insertion hole of the disc cartridge at the standby position, and the disc can be moved in the surface direction of the disc.
Side of disk with enclosure in center of cartridge case
And the inside of the side of the cartridge case.
It is characterized in that engagement means for restricting the enclosure is provided.

With the above structure, the engaging means is engaged with the concave portion of the clamping plate through the turntable insertion hole of the disc cartridge at the standby position. As a result, the movement of the disc cartridge in the standby position in the disc surface direction is restricted.

Therefore, the disk can move only within the range of the gap between the concave portion of the clamping plate and the engaging means. Naturally, this gap is smaller than the gap between the side surface of the disc and the inner surface of the side portion of the cartridge case when the engagement means is not engaged, so that the side surface of the disc does not collide with the inner surface of the side portion of the cartridge case.

As a result, even if the disc recording / reproducing apparatus is mounted on a passenger car or the like and the disc cartridge is run with the disc cartridge inserted in the cartridge holder and the disc cartridge is vibrated, the side surface of the disc and the side portion of the cartridge case are provided. Since it does not collide with the inner surface, it is possible to significantly reduce the generated rattle noise.

As described above, the user can travel comfortably with the disc cartridge still inserted, and the troublesome removal of the disc is unnecessary, so that the burden on the user can be greatly reduced. Further, it can be easily mounted on the disc recording / reproducing apparatus. Therefore, the driver can be freed from mental annoyance and can concentrate on driving a passenger car or the like, which is useful for preventing inadvertent traffic accidents.

Further, in the disc recording / reproducing apparatus of the present invention , the engaging means is a concave portion of the clamping plate.
It is characterized in that it is provided with a non-inclined cylindrical portion that loosely fits .

With the above construction, the circle of the engaging means is further added.
By the cylindrical portion engaging with the concave portion of the clamping plate of the disc cartridge at the standby position, it is possible to prevent the side surface of the disc from colliding with the inner surface of the side portion of the cartridge case.

If the engaging means has flexibility,
In both cases, the biasing force toward the inside of the cartridge case is
Provided along the above-mentioned disc cartridge
Desired to be supported by cantilevered support means
Good

As a result, the engaging means is biased by the depth of the concave portion of the clamping plate. Therefore, when the disc cartridge moves, the engaging means must be retracted by this depth, but it is supported. Since the means is provided in the shape of a flexible cantilever, it is possible to switch between retreat and bias without any trouble.

As described above, since it is possible to prevent the collision of the disc and the cartridge case with the disc cartridge at the standby position of the disc recording / reproducing apparatus, it is possible to prevent the disc cartridge from being inserted into the cartridge holder. Even if vibration is applied to the disk, the disk and the cartridge case do not collide with each other, so that it is possible to significantly suppress or prevent the generation of a rattle sound which has been a problem in the past. Further, it can be easily mounted on the disc recording / reproducing apparatus.

[0052]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [Embodiment 1] A vehicle-mounted mini disk reproducing apparatus with a disk changer function (hereinafter, referred to as MD reproducing apparatus) 1 which is a disk recording / reproducing apparatus according to an embodiment of the present invention. The following is a description based on FIGS. 1 to 4.

First, before describing the MD reproducing apparatus 1, a disk cartridge 90 mounted in the MD reproducing apparatus 1 and reproduced will be described with reference to FIG.

In the disc cartridge 90, a disc 91 as a recording medium has an upper case 94a and a lower case 94b.
And is rotatably housed in a substantially rectangular parallelepiped cartridge case 94. The disk 91 is made of polycarbonate (P
C), and the cartridge case 94 is also generally made of polycarbonate.

A central hole 92 is formed in the disc 91. In the center hole 92, the turntable 11 (FIG. 2) of the MD reproducing device 1 which will be described in detail later attracts and fixes the disk 91 by its magnetic force, so that a clamping plate 93 made of a magnetic material (iron plate) is attached to the upper case. 94
It is provided on the a side.

A turntable insertion hole 95 for inserting the turntable 11 into the center hole 92 is formed in the lower case 94b. Further, the upper case 94a and the lower case 94b are provided with a recording / reproducing window 96 and a shutter 97 for opening / closing the recording / reproducing window 96.

Next, as shown in FIG. 2, the MD reproducing apparatus 1 according to the present embodiment accommodates a plurality of disc cartridges 90, and a disc accommodating portion so that the disc cartridges 90 can be reproduced while automatically exchanging them. 4, a chassis unit 2 in which the disk reproducing section 5 and the disk reproducing section 5 are arranged, and a disk insertion opening 3
Is provided.

The chassis unit 2 includes a main chassis 6 as a base and side plates 7 and 8 on both left and right sides.
And the top plate 9 on the upper surface form a substantially rectangular parallelepiped. Further, inside the chassis unit 2, a disc housing portion 4 is provided on the arrow X2 side and a disc reproducing portion 5 is provided on the arrow X1 side.

Then, the disc insertion opening 3 is provided in each cartridge holder 13 of the disc storage portion 4 which will be described later.
Provided at a position corresponding to the disk cartridge 90
It is possible to insert and eject.

Here, the disc reproducing section 5 includes a chassis 10, a turntable 11 and an optical pickup 1.
2, a spindle motor, a feed motor, etc., which are not shown, are attached. Furthermore, the chassis 10
Can be moved up and down in the directions of arrow Y1 and arrow Y2 in accordance with a control signal by an elevator mechanism (not shown).

Next, the disc storage section 4 will be described. For convenience of explanation, the MD reproducing apparatus 1 that accommodates two disc cartridges 90 will be described here, but it goes without saying that the same applies to the case of three or more disc cartridges 90.

Cartridge holders 13, 13 made of, for example, stainless steel, for accommodating the disc cartridge 90, are vertically stacked in the disc accommodating portion 4.

As shown in FIG. 4, the cartridge holder 13 is provided with substantially L-shaped support portions 14 and 14 in the downward direction of the left and right ends (direction of arrow Y2) so that the disk cartridge 90 can be stored. There is. A notch 15 is formed near the center of the lower part of the cartridge holder 13 so as not to interfere with the chassis 10 of the disk reproducing section 5. Further, near the left and right ends of the upper inner surface of the cartridge holder 13, urging members 16 and 16 for urging the accommodated disk cartridge 90 downward are disposed.

The urging member 16 prevents the label attached to the upper surface of the upper case 94a from floating so that it does not hinder the movement of the disk cartridge 90.
It is provided to secure a space between a and the cartridge holder 13.

Although not shown, a lock mechanism for mounting and fixing the disc cartridge 90 on the cartridge holder 13, a discharging mechanism for ejecting the disc cartridge 90 from the cartridge holder 13, and a disc reproducing portion 5 for reproducing the disc cartridge 90 Naturally, a shutter opening / closing mechanism for opening / closing the shutter 97, a mechanism necessary for automatic replacement of the disc cartridge 90, and the like are also provided.

Although the MD reproducing apparatus 1 according to the present embodiment is described as a reproduction-only machine, it may have a recording function.

Next, the movement of the disc cartridge 90 in the MD reproducing apparatus 1 will be briefly described with reference to FIG. In addition, the following transportation and the like are all performed based on the control signal.

First, the disc cartridge 90 is inserted from the disc insertion opening 3 and stored in the corresponding cartridge holder 13 of the disc storage portion 4 (standby position).

When the reproduction of the disk 91 is instructed, the cartridge holder 13 storing the corresponding disk cartridge 90 moves in the direction of arrow X1. That is, the disc cartridge 90 is transported together with the cartridge holder 13 so that the clamping plate 93 is located directly above the turntable 11 (recording / reproducing position, hereinafter abbreviated as reproducing position).

At this time, the cartridge holder 13
Simultaneously with the movement of the disk, the disk reproducing section 5 causes the lifting mechanism to move the clamping plate 93 and the turntable 11 of the disk cartridge 90 transported to the reproducing position.
Moves in the direction of the arrow Y1 to the position where is engaged.

As a result, at the reproduction position, the turntable 11 is inserted into the turntable insertion hole 9 of the lower case 94b.
5 is inserted into the center hole 92 of the disc 91.
As a result, the clamping plate 93 is attracted to a magnet (not shown) provided on the turntable 11, and the turntable mounting surface 17 of the clamping plate 93 and the turntable mounting surface 18 of the disc 91 turn. The disc 91 is mounted on the table 11 and fixed to the turntable 11.

At this time, the disk 91 is located substantially in the center of the cartridge case 94. Therefore, the disc 91 is attached to the upper case 9 by the turntable 11.
It is held without contacting the 4a and the lower case 94b, and is rotationally driven.

Next, when the disc 91 is instructed to be replaced, the disc reproducing portion 5 is moved up and down by the elevating mechanism to a position where the movement of the cartridge holders 13 that carry the two old and new disc cartridges 90 is not obstructed. Y2
Retreat in the direction. Then, the cartridge holder 13 having the reproduced disk cartridge 90 is returned from the reproducing position to the standby position in the arrow X2 direction, and at the same time, the cartridge holder 13 having the newly reproduced disk cartridge 90 is moved from the standby position to the reproducing position by the arrow. X1
Move in the direction. Then, as described above, the disc reproducing section 5 moves to the reproducing position in the direction of the arrow Y1 and the disc 91 is fixed to the turntable 11.

Here, as shown in FIGS. 3 and 4, in particular, in the MD reproducing apparatus 1 according to the present embodiment, the disc cartridge 9 mounted in the cartridge holder 13 is mounted.
The magnet 19 (disk fixing means) for fixing the disk 91 at the standby position is provided directly above the zero clamping plate 93 integrally with the cartridge holder 13. In addition, the magnet 19
Is provided integrally with the cartridge holder 13 while being covered with, for example, a thin stainless plate (FIG. 4).
It may be provided as a separate component.

3 and 4 show a state in which the disc cartridge 90 is mounted in each cartridge holder 13, and the disc reproducing section 5 is in the home position (lowermost stage). Further, in FIGS. 1 and 4, the disc cartridge 90 and the cartridge holder 13 are shown as sectional views.

Since the magnet 19 is arranged immediately above the clamping plate 93 mounted on the cartridge holder 13, the clamping plate 93 is attracted by the magnet 19 in the direction of the arrow Y1 inside the disc cartridge 90. Since the clamping plate 93 is fixed to the disc 91, the disc 91 and the clamping plate 93 are attracted and fixed to the inner surface of the upper case 94a.

As a result, the attraction force of the magnet 19 allows the disc 91 and the clamping plate 93 to be attracted and fixed to the upper case 94a, and the movement of the disc 91 in the vertical, horizontal, and front-back directions can be restricted. Therefore,
Even if vibration is applied, the disk 91 does not collide with the cartridge case 94, so that it is possible to prevent the generation of rattle noise, which has been a problem in the past.

Next, the function of the magnet 19 during the transportation of the disc cartridge 90 will be described with reference to FIG.

In the disk cartridge 90 in the standby position like the upper disk cartridge 90, the clamping plate 93 is attracted by the magnet 19, so that the disk 91 and the clamping plate 9 are attracted.
3 is adsorbed and fixed to the upper case 94a.

Here, the lower disk cartridge 90
When the reproduction is determined by the control signal, the lower cartridge holder 13 is moved from the standby position to the reproduction position in the arrow X1 direction by a drive mechanism and a guide (not shown). At the same time, the disc reproducing section 5 moves in the arrow Y1 direction by the control signal. Then, the turntable mounting surfaces 17 and 18 of the disc cartridge 90 are mounted on the turntable 11 to be in a reproducible state.

At this time, the attraction force of the turntable 11 is set to be stronger than the attraction force of the magnet 19. Therefore, as the cartridge holder 13 moves from the standby position in the arrow X1 direction, the attractive force of the magnet 19 becomes weaker and the attractive force of the turntable 11 becomes stronger.
Then, when the cartridge holder 13 moves to the reproducing position, that is, when the clamping plate 93 moves directly above the turntable 11 of the disc reproducing portion 5, the clamping force of the turntable 11 causes the clamping plate 93 to move to the magnet 19 side. Is moved to the turntable 11 side, and the turntable mounting surface 17,
18 is placed on the turntable 11.

As described above, the attraction force of the turntable 11 must be set stronger than the attraction force of the magnet 19. However, it is a matter of course that the magnetic field generated by the turntable 11 and the magnet 19 should not affect the disk 91 as a recording medium.

As shown in FIG. 3, the magnet 1
Since 9 is provided directly above the clamping plate 93, the disc 91 is adsorbed and fixed with a gap left between the side surface of the disc 91 and the inner surface of the side portion of the cartridge case 94. However, by arranging the magnet 19 at a position slightly deviated from directly above the clamping plate 93 and deviating from the center of the turntable insertion hole 95 to attract the clamping plate 93, the side surface of the disc 91 and the cartridge case 94 are attracted. It can be adsorbed and fixed in a state where the inner surfaces of the side portions are in contact with each other.

As described above, the MD according to the present embodiment
When the playback device is installed in a passenger car, and the disc cartridge is inserted into the cartridge holder while the vehicle is running and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other. You can mute the sound to the point where you hardly hear it.

Next, as another embodiment of the present invention,
In the configuration of the first embodiment described above, the magnet 91 attracts the clamping plate 93, and the disc 91
Another configuration for sucking and fixing the cartridge to the cartridge case 94 will be described below.

[Second Embodiment] Another embodiment of the present invention will be described with reference to FIGS.
The explanation is based on the following.

As shown in FIG. 7, in the present embodiment, the magnet 19 (disk fixing means) is integrally provided on the upper part of the cartridge holder 13 in the configuration of the above-described first embodiment, but the magnet is provided at the end. This is a configuration in which a cantilever-shaped disc fixing member 20 (disc fixing means) having 21 is provided.

For convenience of explanation, the same members as those shown in the drawings described in the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 5 and 6, the MD reproducing device 1 according to the present embodiment is provided with a disc fixing member 20 as a disc fixing means. The disk fixing member 20 has a structure in which a magnet 21 is provided at an end of a cantilever-shaped support portion 22 (support means) fixed to the side plate 7 of the chassis unit 2 by a fixing portion 23.

The support portion 22 is formed so as not to bend, and is fixed along the cartridge holder 13 by the fixing portion 23. In addition, the magnet 21 is adjusted by adjusting the length of the support portion 22, so that the clamping plate 93 mounted on each cartridge holder 13 is attached.
Are arranged directly below the. Further, the magnet 21 and the support portion 22 are formed thin so as not to hinder the movement of the cartridge holder 13. In addition, the fixed portion 2
3 fixes the support part 22 to the side plate 7 with an adhesive agent or a screw, for example.

5 and 6 show a state in which the disc cartridge 90 is mounted in each cartridge holder 13, and the disc reproducing portion 5 is in the home position (lowermost stage). 6 and 7, the disc cartridge 90 and the cartridge holder 13 are shown as sectional views.

Since the magnet 21 is arranged immediately below the clamping plate 93 mounted on the cartridge holder 13, the clamping plate 93 is provided inside the disc cartridge 90.
Is sucked in the direction of arrow Y2. Since the clamping plate 93 is integrally fixed to the disc 91, the disc 91 and the clamping plate 93 are
Will be adsorbed and fixed to the inner surface of the lower case 94b.

As a result, the attraction force of the magnet 21 allows the disc 91 and the clamping plate 93 to be attracted and fixed to the lower case 94b, and the movement of the disc 91 in the up, down, left, right, and front directions can be restricted. Therefore,
Even if vibration is applied, the disk 91 does not collide with the cartridge case 94, so that it is possible to prevent the rattling sound which has been a problem in the past.

Next, the function of the magnet 21 in the transportation of the disk cartridge 90 will be described with reference to FIG.

In the disk cartridge 90 in the standby position like the upper disk cartridge 90, the clamping plate 93 is attracted by the magnet 21, so that the disk 91 and the clamping plate 9 are attracted.
3 is adsorbed and fixed to the lower case 94b.

Here, the lower disk cartridge 90
When the reproduction is determined by the control signal, the lower cartridge holder 13 is moved from the standby position to the reproduction position in the arrow X1 direction by a drive mechanism and a guide (not shown). At the same time, the disc reproducing section 5 moves in the arrow Y1 direction by the control signal. Then, the turntable mounting surfaces 17 and 18 of the disc cartridge 90 are mounted on the turntable 11 to be in a reproducible state.

At this time, as the cartridge holder 13 moves from the standby position in the arrow X1 direction, the attraction force of the magnet 21 against the clamping plate 93 becomes weaker. Then, when the cartridge holder 13 moves to the reproducing position, that is, when the clamping plate 93 moves directly above the turntable 11 of the disc reproducing section 5, the clamping plate 93 is attracted by the turntable 11 and placed on the turntable. Surface 17,
18 will be mounted on the turntable 11.

As shown in FIG. 5, the magnet 2
Since 1 is provided immediately below the clamping plate 93, the disc 91 is adsorbed with a gap left between the side surface of the disc 91 and the inner surface of the side portion of the cartridge case 94. However, by arranging the magnet 21 at a position slightly deviated from just above the clamping plate 93 and deviating from the center of the turntable insertion hole 95 to attract the clamping plate 93, the side surface of the disc 91 and the cartridge case 94 are attracted. It can be adsorbed and fixed in a state where the inner surfaces of the side portions are in contact with each other.

Further, the magnet 21 can be arranged above the clamping plate 93.

It is a matter of course that the magnetic field generated by the turntable 11 and the magnet 21 should not affect the disk 91 which is a recording medium.

As described above, the MD according to the present embodiment
When the playback device is installed in a passenger car, and the disc cartridge is inserted into the cartridge holder while the vehicle is running and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other. You can mute the sound to the point where you hardly hear it.

Further, it is not necessary to consider the balance of the attraction force between the turntable 11 and the magnet 21, unlike the configuration of the first embodiment described above.

Next, as another embodiment of the present invention,
In the configuration of the first embodiment described above, another configuration for preventing the disk 91 from colliding with the cartridge case 94 via the clamping plate 93 will be described below.

[Embodiment 3] FIG. 2 and FIGS. 8 to 1 show another embodiment of the present invention.
The description will be made based on 1.

As shown in FIG. 11, this embodiment has a structure in which a disk fixing member 30 is provided as a disk fixing means in the structure of the first embodiment described above.

For convenience of explanation, the same members as those shown in the drawings described in the first embodiment will be designated by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 8 and 9, the MD reproducing device 1 according to the present embodiment is provided with a disc fixing member 30 as a disc fixing means. The disk fixing member 30 has a pressing convex portion 31 near the free end of a cantilever-like supporting portion 32 (supporting means) fixed to the side plate 7 of the chassis unit 2 by the fixing portion 33.
(Engagement means) is provided, and the abutment support portion 3 is provided at the free end.
4 is formed.

The disk fixing member 30 must be thin so as not to hinder the movement of the cartridge holder 13, and it is necessary to generate an urging force against bending in the arrow Y2 direction. Thickness 0.2 ~
It is formed of a leaf spring material made of 0.25 mm stainless steel.

8 and 9 show a state in which the disc cartridge 90 is mounted in each cartridge holder 13 and the disc reproducing section 5 is in the home position (lowermost stage). 9 and 11, the disc cartridge 90, the cartridge holder 13, and the disc fixing member 30 are shown as sectional views.

The fixing portion 33 fixes the supporting portion 32 to the side plate 7 with, for example, an adhesive or a screw.

The support portion 32 has a cantilever shape, one end of which is fixed by the fixing portion 33, to the cartridge holder 13.
And supports the pressing projection 31 and the contact support 34 on the free end side. Also, by being bent in the direction of the arrow Y2, a reaction force that urges in the direction of the arrow Y1 is generated.

As shown in FIG. 10, the pressing projection 31
Is a substantially frustoconical convex portion that is formed of the pressing surface 31a and the inclined surface 31b, and has a height of 2.0
It is formed to be about 2.5 mm. In addition, the pressing convex portion 31
Is arranged immediately below the clamping plate 93 mounted on the cartridge holder 13 by adjusting the length of the support portion 32. Further, the inclined surface 31b is provided with a hole 3 so that the pressing surface 31a can be recessed when pressed in the direction of the arrow Y2 from above.
1c is formed. The shape of the hole 31c may be, for example, a notch so that only the inclined surface 31b on the moving direction side of the disc cartridge 90 (direction of arrows X1, X2, Z1, Z2) is left.

The abutting support portion 34 is formed as a horizontal surface at the end extending from the inclined surface 31b of the pressing convex portion 31 on the arrow X1 direction side. When the pressing convex portion 31 is pushed from above and the supporting portion 32 is bent, the contact supporting portion 34 comes into contact with the upper surface of the cartridge holder 13 immediately below and becomes a supporting end. Further, the abutment support portion 34 is provided for the abutment support portion 3 of the disc fixing member 30 located immediately above when the cartridge holder 13 returns from the reproduction position to the standby position.
4 is located above the upper surface of the cartridge holder 13 to be restored, and is formed so as not to hinder the restoration.

As described above, the pressing surface 31a of the pressing convex portion 31 is moved upward (arrow Y) by the urging force of the clamping plate 93 mounted on the cartridge holder 13.
Energize with an appropriate load in one direction). This allows
The disc 91 and the clamping plate 93 are pressed and fixed to the inner surface of the upper portion of the upper case 94a, and the movement of the disc 91 in the up, down, front, back, left, and right directions can be restricted. Therefore, even if vibration is applied, the disk 91 does not collide with the cartridge case 94, so that it is possible to prevent a rattling sound which has been a problem in the related art.

The appropriate load is a load that does not damage the disc 91 under any temperature environment. In particular, when a high load is applied in a high temperature state (which may occur in a vehicle in the summer), the disk 91 is deformed, so that the load needs to be adjusted.

Further, when the disc cartridge 90 is moved onto the disc fixing member 30, since the pressing convex portion 31 projects at the position where the disc cartridge 90 is arranged, the pressing convex portion 31 is pushed down as the disc cartridge 90 moves. To be Then, a space corresponding to the amount of bending of the disk fixing member 30 caused by this pushing down is required between the cartridge holders 13. Therefore, in order to avoid increasing the size of the MD reproducing device 1, it is necessary to reduce the bending of the disc fixing member 30.

Therefore, in the present embodiment, the bending of the disk fixing member 30 is suppressed to a small level by forming the pressing convex portion 31 and the contact support portion 34 as described above.

First, by forming a hole 31c in the pressing convex portion 31, the inclined surface 31b of the pressing convex portion 31 pushed down by the disk cartridge 90 is bent, and the height of the pressing convex portion 31 becomes low. . Thereby, the pressing amount applied to the disk fixing member 30 can be absorbed by the pressing convex portion 31.

Secondly, when the pressing convex portion 31 is pushed down, the disk fixing member 30 is bent, and the contact support portion 34 contacts the upper surface of the cartridge holder 13 directly below. When the deflection further increases, the contact support portion 34 becomes a support end and bends. That is, the disc fixing member 30 is
It will bend with both ends supported. At this time, as the deflection increases, the contact support portion 34 moves in the arrow X1 direction while contacting the upper surface of the cartridge holder 13 immediately below. Thus, the contact support portion 34 can absorb the bending in the arrow Y2 direction as the deformation in the arrow X1 direction. It should be noted that the lowermost disc fixing member 30
It is necessary to provide a support portion 35 for the contact support portion 34 of FIG.

Next, the function of the disc fixing member 30 in the movement of the disc cartridge 90 will be described with reference to FIG.

First, when the disc cartridge 90 is inserted into the cartridge holder 13, the pressing convex portion 31 of the disc fixing member 30 projects inside the cartridge holder 13, and the disc cartridge 90 is inserted (in the direction of arrow Z1). As it goes down, the inclined surface 31b is pushed down. Further, as the disc cartridge 90 is inserted, the pressing surface 31a and the disc cartridge 90 are
While the bottom surface of the base plate slides, the support portion 32 and the inclined surface 31b bend and move downward. Finally, the concave portion of the clamping plate 93 and the pressing surface 31a are engaged with each other.

As a result, as shown in the enlarged view S1 of the main part of FIG. 11, in the upper-stage disc cartridge 90 at the standby position, the clamping plate 93 is urged upward by the pressing surface 31a, so that the disc 91 is urged upward. The clamping plate 93 is pressed and fixed to the upper case 94a.

The relationship between the urging force of the disc fixing member 30 and the urging force of the urging members 16 and 16 of the cartridge holder 13 is stronger in the urging members 16 and 16 than in the disc fixing member 30.

Next, the lower disk cartridge 90
When the reproduction is determined by the control signal, the lower cartridge holder 13 is moved from the standby position to the reproduction position in the arrow X1 direction by a drive mechanism and a guide (not shown). At this time, as the disk cartridge 90 is conveyed from the standby position in the direction of arrow X1, the inclined surface 31b
Is pushed down, the pressing surface 31a and the bottom surface of the disc cartridge 90 slide, and the supporting portion 32 and the inclined surface 31
b bends and moves downward. Then, the disc fixing member 30 is released from under the disc cartridge 90 by the time the clamping plate 93 moves to just above the turntable 11. In addition, the cartridge holder 1
When 3 is moved to the reproduction position, the clamping plate 93 is attracted by the turntable 11 and the turntable mounting surfaces 17 and 18 are mounted on the turntable 11 to be in a reproducible state.

Then, in order to convey the disc cartridge 90 at the reproducing position of the disc reproducing section 5 to the standby position, when the cartridge holder 13 moves in the direction of the arrow X2, the cartridge holder 13 is moved to the disc fixing member 3.
Since the side cutout 13a is formed so as not to contact 0, the inclined surface 31b of the disc fixing member 30 contacts the side of the disc cartridge 90 and is pushed downward. Further, as the disc cartridge 90 is conveyed, the pressing surface 31a and the bottom surface of the disc cartridge 90 slide, and the support portion 32 and the inclined surface 31 are slid.
b bends and moves downward. Finally, the concave portion of the clamping plate 93 and the pressing surface 31a are engaged with each other. As a result, the state returns to the state of the upper-stage disc cartridge 90 at the standby position shown in the enlarged view S1 of the main part of FIG.

Further, when the disk cartridge 90 is taken out from the cartridge holder 13, the inclined surface 31b is pushed down and the pressing surface 31a is pushed as the disk cartridge 90 is conveyed from the standby position in the direction of arrow Z2.
While the bottom surface of the disk cartridge 90 slides, the support portion 32 and the inclined surface 31b bend and move downward.
Then, the disc fixing member 30 is released from below the disc cartridge 90, and the disc cartridge 90 is ejected from the disc insertion opening 3.

As described above, the MD according to the present embodiment
When the playback device is installed in a passenger car, and the disc cartridge is inserted into the cartridge holder while the vehicle is running and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other. You can mute the sound to the point where you hardly hear it.

Since the bending of the disc fixing member can be suppressed to a small level, the space between the cartridge holders can be reduced. Therefore, the muffling function can be provided without increasing the size of the MD reproducing device.

Next, as another embodiment of the present invention,
In the configuration of the third embodiment described above, another configuration in which the clamping plate 93 is pressed by the disk fixing member and the disk 91 is pressed and fixed to the upper case 94a will be described below.

[Embodiment 4] FIG. 2 and FIG. 12 to FIG. 12 according to another embodiment of the present invention.
Based on No. 14, the description is as follows.

As shown in FIG. 14, the structure of this embodiment is different from the structure of the above-described third embodiment in that the disk fixing member 40 is provided as the disk fixing means, and the upper notch is formed in the cartridge holder 13 accordingly. Thirteen
b is provided.

For convenience of explanation, the same members as those shown in the drawings described in Embodiments 1 and 3 are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 12 and 13, the MD reproducing apparatus 1 according to the present embodiment is provided with a disc fixing member 40 as disc fixing means.
The disk fixing member 40 has a structure in which a pressing convex portion 41 (engaging means) is provided at the free end of the cantilever-shaped support portion 32 fixed to the side plate 7 of the chassis unit 2 by the fixing portion 33. is there.

The disk fixing member 40 must be thin so as not to hinder the movement of the cartridge holder 13, and it is necessary to generate a biasing force against bending in the arrow W direction. Thickness 0.2-0.
It is formed of a leaf spring material made of 25 mm stainless steel.

12 and 13 show a state in which the disc cartridge 90 is mounted in each cartridge holder 13 and the disc reproducing section 5 is located at the home position (lowermost stage). In addition, FIG.
14, the disc cartridge 90, the cartridge holder 13, and the disc fixing member 40 are shown as a cross-sectional view.

As shown in FIG. 14, the pressing convex portion 41 is formed.
Is a substantially hemispherical convex portion protruding upward, and is formed to have a height of 2.0 to 2.5 mm, for example. Further, by adjusting the length of the support portion 32, the pressing convex portion 41 is disposed so as to contact the clamping plate 93 at the pressing point 41a and the disk 91 at the pressing point 41b ( FIG. 14 (enlarged view S of main parts)
2)). The pressing protrusion 41 may have a spherical shape only in the moving direction of the disc cartridge 90, and may have a notch shape in a portion that does not hinder the movement.

Further, the upper notch 13b provided in the cartridge holder 13 has the disc fixing member 4 immediately above it.
When 0 is pushed down by the disc cartridge 90, it is formed as a hole that digs in according to the planar shape of the disc fixing member 40.

As shown in FIG. 13, the pressing convex portion 41 is formed.
Urges the clamping plate 93 mounted on the cartridge holder 13 diagonally upward (direction of arrow W) by an appropriate load by the urging force of the support portion 32. As a result, the side surface of the disc 91 is pressed against the inner surface of the side portion of the upper case 94a, and the upper surface of the clamping plate 93 is pressed against the inner surface of the upper portion of the upper case 94a.

Accordingly, the disc 91 and the clamping plate 93 are pressed and fixed to the inner surface of the upper case 94a,
It is possible to regulate the movement of the disc 91 in the up, down, front, back, left, and right directions. Therefore, even if vibration is applied, the disk 91 does not collide with the cartridge case 94, so that it is possible to prevent a rattling sound which has been a problem in the related art.

The appropriate load is a load that does not damage the disc 91 under any temperature environment. In particular, when a high load is applied in a high temperature state (which may occur in a vehicle in the summer), the disk 91 is deformed, so that the load needs to be adjusted.

Further, when the disc cartridge 90 is moved onto the disc fixing member 40, since the pressing convex portion 41 projects at the position where the disc cartridge 90 is arranged, the pressing convex portion 41 is pushed down as the disc cartridge 90 moves. To be Then, a space corresponding to the amount of bending of the disk fixing member 40 generated by this pushing down is required between the cartridge holders 13.

Therefore, in the present embodiment, in addition to providing the upper notch 13b in the cartridge holder 13, the gap between the cartridge holders 13 is further reduced by the following procedure.

As described in the third embodiment, the urging force of the disk fixing member 40 and the cartridge holder 1
Regarding the relationship of the urging force of the urging member 16 of No. 3, unless the urging member 16 is stronger than the disk fixing member 40, a space cannot be maintained between the upper portion of the disk cartridge 90 and the upper case 94a. However, this space is required when the disc cartridge 90 moves, and once the disc cartridge 90 is mounted in the cartridge holder 13, even if the disc cartridge 90 moves up and down, there is a problem in label peeling. There is no. However, this space must be secured when the disc cartridge 90 is inserted into or ejected from the MD reproducing device 1.

Therefore, as shown in FIG. 14, in the present embodiment, while the upper cartridge holder 13 is moving between the disc housing portion 4 and the disc reproducing portion 5,
The disc fixing member 40 allows the disc cartridge 9
The biasing force of the cartridge holder 13 is set to be stronger than the biasing force of the biasing member 16 so that one side of 0 is lifted upward.

As a result, when the pressing convex portion 41 moves to the vicinity of the end 90a of the disc cartridge 90, the vicinity of the end 90a of the disc cartridge 90 is lifted upward. Therefore, the downward bending amount of the disk fixing member 40 is reduced. That is, the bending of the disc fixing member 40 is absorbed by the disc cartridge 90 side.

Further, instead of lifting the disc cartridge 90, the cartridge holder 13 can be lifted. That is, the cartridge holder 13
With the disc cartridge 90 still attached, the bending of the disc fixing member 40 can be reduced by tilting it upward as in the above method. However, at this time, a guide that can move (tilt) the cartridge holder 13 upward is required.

Next, the function of the disc fixing member 40 in the movement of the disc cartridge 90 will be described with reference to FIG.

First, when the disc cartridge 90 is inserted into the cartridge holder 13, the pressing convex portion 41 of the disc fixing member 40 projects inside the cartridge holder 13, and the disc cartridge 90 is inserted (in the direction of arrow Z1). As it goes down, the pressing convex portion 41 is pushed down. Further, as the disc cartridge 90 is inserted, the pressing point 41a and the disc cartridge 90
While the bottom surface of the support slides, the support portion 32 bends and moves downward. Finally, the concave portion of the clamping plate 93 and the pressing convex portion 41 are engaged with each other.

As a result, as shown in the enlarged view S2 of the main part of FIG. 14, in the lower disk cartridge 90 at the standby position, the clamping plate 93 is urged by the pressing point 41a and the disk 91 is pressed at the pressing point. 41b
The disk 91 and the clamping plate 93 are pressed and fixed to the upper case 94a because they are urged by.

Next, the lower disk cartridge 90
When the reproduction is determined by the control signal, the lower cartridge holder 13 is moved from the standby position to the reproduction position in the arrow X1 direction by a drive mechanism and a guide (not shown). At this time, as the disk cartridge 90 is conveyed from the standby position in the direction of the arrow X1, the pressing convex portion 41
Is pushed down, the pressing portion 41a and the bottom surface of the disc cartridge 90 slide, the support portion 32 bends, and moves downward. Then, the disc fixing member 40 is released from the bottom of the disc cartridge 90 by the time the clamping plate 93 moves right above the turntable 11. Further, when the cartridge holder 13 moves to the reproduction position, the clamping plate 93 is attracted by the turntable 11 and the turntable mounting surface 1
7, 18 are placed on the turntable 11 and are in a reproducible state.

Subsequently, in order to convey the disc cartridge 90 at the reproducing position of the disc reproducing section 5 to the standby position, when the cartridge holder 13 moves in the direction of the arrow X2, the cartridge holder 13 is moved to the disc fixing member 4.
Since the side notch 13a is formed so as not to contact 0, the pressing convex portion 41 of the disc fixing member 40 contacts the side portion of the disc cartridge 90 and is pushed downward. Further, as the disc cartridge 90 is conveyed, the pressing portion 41a and the bottom surface of the disc cartridge 90 slide while the support portion 32 bends and moves downward. At this time, the disc cartridge 90 is lifted upward as described above. Finally, the concave portion of the clamping plate 93 and the pressing convex portion 41 are engaged with each other. As a result, the state returns to the state of the lower stage disk cartridge 90 at the standby position shown in the enlarged view S2 of the main part of FIG.

Further, when the disk cartridge 90 is taken out from the cartridge holder 13, the pressing convex portion 41 is pressed down as the disk cartridge 90 is conveyed from the standby position in the direction of arrow Z2, and the pressing point 41a.
While the bottom surface of the disk cartridge 90 slides, the support portion 32 bends and moves downward. Then, the disc fixing member 40 is released from below the disc cartridge 90, and the disc cartridge 90 is ejected from the disc insertion opening 3.

As described above, the MD according to the present embodiment
When the playback device is installed in a passenger car, and the disc cartridge is inserted into the cartridge holder while the vehicle is running and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other. You can mute the sound to the point where you hardly hear it.

Since the bending of the disc fixing member can be suppressed to a small level, the space between the cartridge holders can be reduced. Therefore, the muffling function can be provided without increasing the size of the MD reproducing device.

Next, as another embodiment of the present invention,
In the configuration of the third embodiment described above, a configuration in which the position of the recess of the clamping plate 93 is regulated by the disc fixing member so that the side surface of the disc 91 does not collide with the inner surface of the side portion of the cartridge case 94 will be described below. To do.

[Embodiment 5] FIG. 2 and FIG. 15 to FIG. 15 show another embodiment of the present invention.
The following is a description based on No. 18.

As shown in FIG. 18, this embodiment has a structure in which a disk fixing member 50 is provided as a disk fixing means in the structure of the third embodiment described above.

For the sake of convenience of explanation, the same members as those shown in the drawings described in Embodiments 1 and 3 are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 15 and 16, the MD reproducing device 1 according to the present embodiment is provided with a disc fixing member 50 as disc fixing means.
The disc fixing member 50 is provided with a restricting convex portion 51 (engaging means) in the vicinity of the free end of the cantilever-shaped support portion 32 fixed to the side plate 7 of the chassis unit 2 by the fixing portion 33. The contact support portion 34 is formed at the end.

The disk fixing member 50 must be thin so as not to hinder the movement of the cartridge holder 13 and generate a biasing force against bending in the direction of arrow Y2. Thickness 0.2 ~
It is formed of a leaf spring material made of 0.25 mm stainless steel.

15 and 16 show a state in which the disc cartridge 90 is mounted in each cartridge holder 13 and the disc reproducing section 5 is located at the home position (lowermost stage). In addition, FIG.
18 and FIG. 18, the disc cartridge 90, the cartridge holder 13, and the disc fixing member 50 are shown as a sectional view.

As shown in FIG. 17, the restriction projection 51 is formed.
Is a substantially frustoconical projecting portion formed of an upper surface 51a, a loose fitting portion 51b, and an inclined surface 51c,
For example, the height is 2.0 to 2.5 mm. Also,
The regulation convex portion 51 is arranged immediately below the clamping plate 93 mounted on the cartridge holder 13 by adjusting the length of the support portion 32.

As shown in FIG. 18, the loose fitting portion 51b is formed.
Is a non-tilted cylindrical portion provided between the upper surface 51a and the inclined surface 51c. The outer diameter of the loose fitting portion 51b, that is, the outer diameter of the upper surface 51a, is the same as the side surface of the disk 91 placed at the center of the cartridge case 94 and the cartridge case 9.
The gap d between the concave portion (center hole 92) of the clamping plate 93 and the loose fitting portion 51b is larger than the gap d1 between the inner surface of the side portion 4 and
2 is set to be smaller (FIG. 18 (enlarged view of essential part S3)). For example, in the MD reproducing device 1 according to the present embodiment, since the gap d1 is about 1.0 mm, the loose fitting portion 51 is set so that the gap d2 is about 0.2 to 0.3 mm.
Set the outer diameter of b to about 10 mm.

Further, as shown in FIG. 17, a hole 51d is formed in the inclined surface 51c so that the inclined surface 51c can be recessed when the upper surface 51a is pushed from above in the direction of the arrow Y2. ing. As the shape of the hole 51d, for example, the inclined surface 51 on the moving direction side (arrows X1, X2, Z1, Z2 direction) of the disc cartridge 90 is formed.
It may be cut out so that only c is left.

The restricting convex portion 51 has a loose fitting portion 51b.
And the inclined surface 51c extends as it is without forming the upper surface 51a.
It may be a perfect truncated cone shape connected to. In this case, the concave portion of the clamping plate 93 and the upper surface 51
The outer diameter of the upper surface 51a is set such that a gap d2 ′ (not shown) with the outer periphery of a is smaller than the gap d1.

As described above, the loose fitting portion 51b of the restriction convex portion 51 is loosely fitted in the concave portion of the clamping plate 93 mounted on the cartridge holder 13, and the movable range in the left, right, front and rear of the disc 91 is set to the gap d2 ( Regulate within the range permitted by <d1). As a result, it is possible to prevent a collision between the side surface of the disk 91 and the inner surface of the side portion of the cartridge case 94.

Here, as described above, the sound of the collision between the disk 91 and the cartridge case 94 is largest when the side surface of the disk 91 collides with the inner surface of the side portion of the cartridge case 94. This is because the gap d1 is about 1 mm, and when the disc 91 is shaken, the collision sound is increased due to the inertial force.

Therefore, in the present embodiment, the rattle noise is still generated due to a cause other than the collision between the side surface of the disk 91 and the inner surface of the side portion of the cartridge case 94. The effect can be obtained. Further, since the disc 91 is held at a substantially central position and no load is applied, the safety of the recording medium is high.

Here, the hole 51d is formed in the regulation convex portion 51 and the contact support portion 34 is provided to reduce the bending of the disc fixing member 50.
The function of the disc fixing member 50 in the movement of the disc cartridge 90 is the same as that of the third embodiment, and therefore its explanation is omitted.

As described above, the MD according to the present embodiment
When the playback device is installed in a passenger car, and the disc cartridge is inserted into the cartridge holder while the vehicle is running and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other. You can mute the sound to the point where you hardly hear it.

Since the bending of the disk fixing member can be suppressed to a small level, the space between the cartridge holders can be reduced. Therefore, the muffling function can be provided without increasing the size of the MD reproducing device.

Next, as another embodiment of the present invention,
In the configuration of the third embodiment described above, a configuration in which the position of the recess of the clamping plate 93 is regulated by the disc fixing member so that the side surface of the disc 91 does not collide with the inner surface of the side portion of the cartridge case 94 will be described below. To do.

[Sixth Embodiment] Another embodiment of the present invention will be described with reference to FIGS.
22 will be described below.

As shown in FIG. 22, this embodiment has a structure in which a disk fixing member 60 is provided as a disk fixing means in the structure of the third embodiment described above.

For convenience of explanation, the first, third, and third embodiments will be described.
The same members as those of the configuration shown in the drawings described in 5 and 5 are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 19 and 20, the MD reproducing device 1 according to the present embodiment is provided with a disc fixing member 60 as disc fixing means.
The disc fixing member 60 is provided with a restricting convex portion 61 (engaging means) in the vicinity of the free end of the cantilever-shaped support portion 32 fixed to the side plate 7 of the chassis unit 2 by the fixing portion 33. The contact support portion 34 is formed at the end.

The disk fixing member 60 must be thin so as not to hinder the movement of the cartridge holder 13, and it is necessary to generate an urging force against bending in the arrow Y2 direction. Thickness 0.2 ~
It is formed of a leaf spring material made of 0.25 mm stainless steel.

19 and 20 show a state in which the disc cartridge 90 is mounted in each cartridge holder 13, and the disc reproducing portion 5 is in the home position (lowermost stage). Also, FIG.
22 and 22, the disc cartridge 90, the cartridge holder 13, and the disc fixing member 60 are shown as a sectional view.

As shown in FIG. 21, the restriction projection 61 is formed.
Is a convex portion of a truncated cone shape having an upper surface 61a and an inclined surface 61b and protruding upward, for example, a height of 2.0 to
It is formed to 2.5 mm. In addition, the regulation convex portion 61 is
By adjusting the length of the supporting portion 32, the clamping plate 93 mounted on the cartridge holder 13
Is arranged immediately below. In addition, FIG. 22 (enlarged view of main part S4)
As shown in, the upper surface 61a and the inclined surface 61b are
It is formed so as to come into contact with the corner portion of the center hole 92 of the disk 91 at the contact point 92a.

Further, as shown in FIG. 21, the inclined surface 6
A hole 61c is formed in the inclined surface 61b of the 1b so that the upper surface 61a can be recessed when pushed in the direction of the arrow Y2 from above. The shape of the hole 61c is, for example, an inclined surface 61b on the moving direction side (arrows X1, X2, Z1, Z2 direction) of the disc cartridge 90.
It may be cut out to leave only.

As described above, the inclined surface 61b of the restriction convex portion 61 engages with the concave portion of the clamping plate 93 mounted on the cartridge holder 13 and comes into contact with the corner portion 92a of the central hole 92. The disk 91 is fixed on the left and right sides. As a result, it is possible to prevent a collision between the side surface of the disk 91 and the inner surface of the side portion of the cartridge case 94.

Therefore, in the present embodiment, the rattle noise is still generated due to a cause other than the collision between the side surface of the disc 91 and the inner surface of the side portion of the cartridge case 94. The effect can be obtained. Further, since the disc 91 is held at a substantially central position and no load is applied, the safety of the recording medium is high.

Here, the hole 61c is formed in the restriction projection 61, and the contact support portion 34 is provided to reduce the bending of the disk fixing member 60.
The function of the disc fixing member 60 in the movement of the disc cartridge 90 is the same as that of the third embodiment, and therefore its explanation is omitted.

As described above, the MD according to the present embodiment
When the playback device is installed in a passenger car, and the disc cartridge is inserted into the cartridge holder while the vehicle is running and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other. You can mute the sound to the point where you hardly hear it.

Since the bending of the disc fixing member can be suppressed to a small level, the space between the cartridge holders can be reduced. Therefore, the muffling function can be provided without increasing the size of the MD reproducing device.

[0186]

As described above, the disk recording / reproducing apparatus of the present invention is a disk cartridge in which a disk, which is a recording medium, in which a clamping plate made of a magnetic material is fixed in the center hole is stored in the cartridge case. In a disc recording / reproducing apparatus which mounts the disc cartridge at the standby position and conveys the disc cartridge from the standby position to the recording / reproducing position for recording / reproducing, the above
Place the top surface of the ramping plate on the cartridge case.
While abutting on the inner surface of the upper part,
While contacting the inner surface of the side of the cartridge case
The fixing means is provided with a disk fixing means for preventing the disk from colliding with the cartridge case.

Therefore, even if the disc recording / reproducing apparatus is mounted on a passenger car or the like and the disc cartridge is run with the disc cartridge inserted in the cartridge holder and the disc cartridge is vibrated, the disc and the cartridge case do not collide. It is possible to prevent the generation of rattle noise, which has been a problem in the past.

Therefore, the user can travel comfortably with the disc cartridge still inserted, and the troublesome removal of the disc is unnecessary, so that the burden on the user can be greatly reduced. In addition, the driver can be freed from mental annoyance and can concentrate on driving a passenger car, etc., which is effective in preventing traffic accidents due to carelessness.

Further, in the disc recording / reproducing apparatus of the present invention , the disc fixing means is provided near the clamping plate of the disc cartridge at the standby position.
Is provided and the clamping plate is inserted into the turntable.
The magnet is configured to be attracted and fixed by being displaced from the center of the insertion hole .

[0190] Therefore, further, to the disk cartridge in the standby position of the disk recording and reproducing apparatus, magnet by adsorbing fixing the clamping plate, it is possible to prevent a collision between the disk and the cartridge case.

As a result, even if the disc recording / reproducing device is mounted on a passenger car or the like and the disc cartridge is run with the disc cartridge inserted in the cartridge holder and the disc cartridge is vibrated, the disc and the cartridge case do not collide. It is possible to prevent the generation of rattle noise, which has been a problem in the past.

In addition, since it suffices to provide the magnet in the vicinity of the clamping plate of the disc cartridge at the standby position, the disc recording / reproducing apparatus does not become large and functions stably.

As described above, the user can travel comfortably even with the disc cartridge inserted, and the troublesome removal of the disc is not required, so that the burden on the user can be greatly reduced. Further, there is an effect that it can be easily mounted on the disc recording / reproducing apparatus. In addition, the driver can be freed from mental annoyance and can concentrate on driving a passenger car, etc., which is effective in preventing traffic accidents due to carelessness.

[0194] In addition, the disk recording and reproducing apparatus of the present invention, the disc securing means, said in the standby position
Turn to the clamping plate of the disc cartridge
Engage through the table insertion hole to allow the disc to
An engagement means for pressing and fixing the inner surface of the trig case is provided.
It is a configured structure.

Therefore, further, the disc cartridge at the standby position of the disc recording / reproducing apparatus is engaged.
By the means pressing and fixing the clamping plate, it is possible to prevent a collision between the disk and the cartridge case.

Therefore, even if vibration is applied to the disc cartridge with the disc cartridge inserted in the cartridge holder, the disc and the cartridge case do not collide with each other, so that it is possible to prevent the rattling sound which has been a problem in the past. It has the effect of being able to.

Further , the disc recording / reproducing apparatus of the present invention is
Clamping cartridge made of magnetic material
A disc that is a recording medium with the rate fixed in the center hole.
Install the disc cartridge containing the
The disc cartridge from the standby position.
Disc recording / reproducing device for recording / reproducing by transporting to a raw position
In, one by one said disk cartridge is mounted, the cartridge holder for transporting between the standby position and the recording and reproducing position, the clamping plate
This is a configuration in which a magnet for attracting and fixing is provided.

Therefore, since the magnet adsorbs and fixes the clamping plate to the disc cartridge at the standby position of the disc recording / reproducing apparatus, it is possible to prevent the disc from colliding with the cartridge case.

Therefore, even if the disc cartridge is inserted into the cartridge holder and the disc cartridge is vibrated, the disc and the cartridge case do not collide with each other, so that it is possible to prevent the rattling sound from being generated. It has the effect of being able to.

In addition, since the magnet is provided integrally with the cartridge holder in the vicinity of the clamping plate of the disc cartridge, the disc recording / reproducing apparatus does not become large, and stable operation is achieved.

Further, in the disc recording / reproducing apparatus of the present invention , the magnet is provided on the cartridge holder.
Installed at a position that is offset from directly above the clamping plate.
The clamping plate of the turntable insertion hole.
By shifting from the center and sucking,
The side surface was brought into contact with the inner surface of the side portion of the cartridge case.
In this state, it is fixed by suction .

[0202] Therefore, further, to the disk cartridge in the standby position of the disk recording and reproducing apparatus, mug
Net by chucking a clamping plate, it is possible to prevent a collision between the disk and the cartridge case.

As a result, even if the disc recording / reproducing apparatus is mounted on a passenger car or the like, and the disc cartridge is run with the disc cartridge inserted into the cartridge holder and the disc cartridge is vibrated, the disc and the cartridge case do not collide. It is possible to prevent the generation of rattle noise, which has been a problem in the past.

As described above, the user can travel comfortably with the disc cartridge still inserted, and the troublesome removal of the disc is not required, so that the burden on the user can be greatly reduced. Further, there is an effect that it can be easily mounted on the disc recording / reproducing apparatus. In addition, the driver can be freed from mental annoyance and can concentrate on driving a passenger car, etc., which is effective in preventing traffic accidents due to carelessness.

The disc recording / reproducing apparatus of the present invention is
In the cartridge case, a disk cartridge, in which a disk as a recording medium is stored, in which a clamping plate made of a magnetic material is fixed in a central hole, is mounted at a standby position, and the disk cartridge is moved from the standby position to a recording / reproducing position. In a disc recording / reproducing apparatus for carrying and recording / reproducing, the concave portion of the clamping plate is engaged through the turntable insertion hole of the disc cartridge at the standby position, and the disc can be moved in the surface direction of the disc.
Side of disk with enclosure in center of cartridge case
And the inside of the side of the cartridge case.
This is a configuration in which engagement means for restricting the enclosure is provided.

Therefore, the disc can move only within the range of the gap between the concave portion of the clamping plate and the engaging means. Naturally, this gap is smaller than the gap between the side surface of the disk and the inner surface of the side portion of the cartridge case when the engaging means is not engaged, so that the side surface of the disk and the inner surface of the side portion of the cartridge case are prevented from colliding. You can

As a result, even if the disc recording / reproducing apparatus is mounted on a passenger car or the like, and the disc cartridge is run with the disc cartridge inserted in the cartridge holder and the disc cartridge is vibrated, the side surface of the disc and the side portion of the cartridge case are affected. Since it does not collide with the inner surface, it is possible to significantly reduce the generated rattle noise.

As described above, the user can travel comfortably even with the disc cartridge inserted, and the troublesome removal of the disc is unnecessary, so that the burden on the user can be greatly reduced. Further, there is an effect that it can be easily mounted on the disc recording / reproducing apparatus. In addition, the driver can be freed from mental annoyance and can concentrate on driving a passenger car, etc., which is effective in preventing traffic accidents due to carelessness.

Further, in the disc recording / reproducing apparatus of the present invention , the engaging means is a concave portion of the clamping plate.
This is a configuration including a non-tilted cylindrical portion that loosely fits .

Therefore,further,Engaging meansCylindrical part of
Is the clamp pin of the disc cartridge in the standby position.
Side of the disc by engaging the recess in the
To prevent the surface from colliding with the inner surface of the side of the cartridge case
be able to.

As described above, since it is possible to prevent the disc cartridge and the cartridge case from colliding against the disc cartridge in the standby position of the disc recording / reproducing apparatus, it is possible to prevent the disc cartridge from being inserted into the cartridge holder. Even if a vibration is applied to the disk, the disk and the cartridge case do not collide with each other, so that it is possible to significantly suppress or prevent the generation of rattle noise, which has been a problem in the past. Further, there is an effect that it can be easily mounted on the disc recording / reproducing apparatus.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an outline of a configuration and an operation of an MD reproducing device according to an embodiment of the present invention.

2 is a perspective view showing the outline of the configuration of the MD reproducing device shown in FIG. 1. FIG.

3 is a plan view showing the outline of the configuration of the MD reproducing device shown in FIG. 1. FIG.

4 is a front view showing the outline of the configuration of the MD reproducing device shown in FIG. 1. FIG.

FIG. 5 is a plan view showing an outline of a configuration of an MD reproducing device according to another embodiment of the present invention.

6 is a front view showing the outline of the configuration of the MD reproducing device shown in FIG. 5. FIG.

7 is an explanatory diagram showing an outline of the configuration and operation of the MD reproducing device shown in FIG.

FIG. 8 is a plan view showing the outline of the configuration of an MD reproducing device according to another embodiment of the present invention.

9 is a front view showing the outline of the configuration of the MD reproducing device shown in FIG. 8. FIG.

10 is a perspective view showing the outline of the configuration of a disc fixing member provided in the MD reproducing device shown in FIG. 8. FIG.

11 is an explanatory diagram showing an outline of a configuration and an operation of the MD reproducing device shown in FIG. 8, and S1 is an enlarged view of a main part.

FIG. 12 is a plan view showing the outline of the configuration of an MD reproducing device according to another embodiment of the present invention.

13 is a front view showing the outline of the configuration of the MD reproducing device shown in FIG. 12. FIG.

14 is an explanatory diagram showing an outline of a configuration and an operation of the MD reproducing device shown in FIG. 12, and S2 is an enlarged view of a main part.

FIG. 15 is a plan view showing the outline of the configuration of an MD reproducing device according to another embodiment of the present invention.

16 is a front view showing the outline of the configuration of the MD reproducing device shown in FIG.

17 is a perspective view showing an outline of a configuration of a disc fixing member provided in the MD reproducing device shown in FIG.

18 is an explanatory diagram showing the outline of the configuration and operation of the MD reproducing device shown in FIG. 15, and S3 is an enlarged view of a main part.

FIG. 19 is a plan view showing the outline of the configuration of an MD reproducing device according to another embodiment of the present invention.

20 is a front view showing the outline of the configuration of the MD reproducing device shown in FIG. 19. FIG.

21 is a perspective view showing the outline of the configuration of a disk fixing member provided in the MD reproducing device shown in FIG. 19. FIG.

22 is an explanatory diagram showing an outline of the configuration and operation of the MD reproducing device shown in FIG. 19, and S4 is an enlarged view of a main part.

FIG. 23 is an exploded perspective view showing the outline of the configuration of a disk cartridge which is mounted on the MD reproducing apparatus according to the embodiment of the present invention to perform recording / reproducing.

24 is a cross-sectional view of the disc cartridge shown in FIG. 23, (a) showing a state during disc reproduction, and (b).
Shows the state where the disc is in contact with the cartridge case.

FIG. 25 is a plan view showing the outline of the configuration of a conventional MD reproducing device.

FIG. 26 is a front view showing the outline of the configuration of the conventional MD reproducing device shown in FIG. 25.

[Explanation of symbols]

1 MD playback device (disk recording / playback device) 13 Cartridge holder 19 Magnet (disk fixing means) 20 Disc fixing member (disc fixing means) 21 magnet 22 Supporting part (supporting means) 30 Disc fixing member (disc fixing means) 31 Pressing convex portion (engaging means) 32 Supporting part (supporting means) 40 Disc fixing member (disc fixing means) 41 Pressing convex part (engaging means) 50 Disc fixing member (disc fixing means) 51 Restriction projection (engagement means) 60 Disc fixing member (disc fixing means) 61 Restriction projection (engagement means) 90 disk cartridge 91 discs 92 Center hole 93 Clamping plate 94 cartridge case 95 Turntable insertion hole

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Claims (2)

(57) [Claims] 1. A cartridge case made of a magnetic material.
With a recording medium with a ramping plate fixed in the center hole
A disc cartridge that contains a disc
Mount it in the standby position and place the disc cartridge in the standby position.
A disc that carries from the storage to the recording / playback position for recording / playback
In the recording / playback device, load the above disk cartridges one by one, and wait for the above
Cartridge for transporting between the recording position and the recording / reproducing position
Adsorb and fix the above clamping plate to the holder.
A disk provided with a magnet
Recording / playback device . 2. The magnet is the cartridge holder.
Position above the clamping plate on the dar
Placed on the turntable with the clamping plate
By shifting from the center of the insertion hole and sucking,
Touch the side of the disk to the inner surface of the side of the cartridge case.
It is characterized by being adsorbed and fixed in the state of being in contact
The disc recording / reproducing apparatus according to claim 1 .