JPH07320358A - Disc loading apparatus - Google Patents

Abstract

PURPOSE:To stabilize the rotation of a disc and avoid a sound skip phenomenon by sufficiently suppressing the resonance of a disc caused by a sound pressure from a loudspeaker and a vibration given to an apparatus. CONSTITUTION:The disc loading apparatus has a turntable 4 onto which a disc 1 is loaded and which turns the disc 1 and is fixed to a tray 2 so as to be turntable. Further, a CD mechanism 5 which drives the turntable to turn is fixed to a cabinet 3. When the tray is closed, the tray 2 is elevated along inclined trenches 6a, 6b and 6c and the turntable 4 is coupled with a disc holder 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc loading device for loading a disc to a disc driving device provided in a compact disc player or the like.

[0002]

2. Description of the Related Art A tray method, which is a disk mounting method used in a disk mounting apparatus provided in a conventional CD (compact disk) radio cassette recorder or the like, will be described with reference to FIG. FIG. 8 shows how the tray 202 is closed by placing the disc 201 in the recessed portion provided in the tray 202. The opening / closing operation of the tray 202 is performed by the tray 202.
It is performed by a motor 203 provided on the lower side of the front part of the.

When the tray 202 is completely closed, the slider 204 beside the motor 203 operates,
The CD mechanism 205, which is the drive unit of the disc under the tray 202, rises. Then, CD mechanism 2
The turntable 207 attached to the shaft of the spin motor 206 at the front of 05 goes up.

Then, the protrusion 207a at the center of the turntable 207 enters the center hole of the disc 201,
Further, the stabilizer 208 is pushed up. Then, the stabilizer 208 is separated from the external portion 209 of the tray unit, and can freely rotate as shown in FIG.

Further, the CD mechanism 205 has a tray 20.
As shown in FIG. 9, the tray 202 is provided with a wide hole 202a for that purpose because it can pass through 2. Therefore, during the opening / closing operation of the tray 202, the edge of the disc 201 is fixed to the disc supporting portion 202b.
Is supported by ... (In the case of a disc having a diameter smaller than that of the disc 201, the disc support portion 202c is used)
Only, and the mounting state is unstable. Therefore, if the tray 202 is opened and closed by the force applied by the fingers of the hand, the elastic force of the spring, or the like, the disc 201 may shift from the tray 202 and enter the inside of the CD boombox when the tray 202 is suddenly opened and closed. There is. In order to prevent this, gears (not shown) provided on the tray 202,
A gear (not shown) attached to the motor 203,
A pulley, a gear structure, and the like for reducing the rotation speed of the motor 203 are provided.
The opening / closing speed of the tray 202 is adjusted so that the tray 3 does not open / close suddenly.

[0006]

By the way, in the disk mounting apparatus adopting the above-mentioned conventional tray system, it is necessary to increase the height direction of the tray 202 in order to increase the diameter of the stabilizer 208. It becomes large. Therefore, the diameter of the stabilizer 208 cannot be made very large.

However, because of the small diameter of the stabilizer 208 for the above reason, it is not possible to sufficiently suppress the resonance of the disk 201 due to the sound pressure from the speaker at a high volume. Further, since the stabilizer 208 has a small diameter, when vibration is applied to the device, the vibration cannot be sufficiently absorbed. Therefore, there is a problem in that the rotation operation of the disc 201 becomes unstable and a sound skip phenomenon occurs.

Further, since the CD mechanism 205 moves up and down, the vibration of the entire apparatus is large. Therefore, similarly to the above, the resonance and vibration of the disk 201 cannot be sufficiently suppressed. As a result, similarly to the above, there is a problem in that the rotation operation of the disk 201 becomes unstable and a sound skip phenomenon occurs.

Further, since a drive mechanism for moving the CD mechanism 205 up and down is required, a large number of parts are required for making the disc mounting apparatus, and there is a problem that cost performance is deteriorated.

Further, as described above, since it is necessary to adjust the opening / closing speed of the tray 202 in order to prevent the tray 202 from opening / closing suddenly, it is necessary to provide a gear, a pulley or a gear structure. Therefore, a large number of parts are required to make the disk mounting device, and there is a problem that cost performance is deteriorated.

Further, as described above, during the opening / closing operation of the tray 202, the disk 201 is supported only by the edge portion thereof, and the mounting state is unstable. Therefore, the disk 201 is placed on the tray 202. If the CD radio cassette is inadvertently tilted or carried around before the tray 202 is closed, the disc 201 may shift from the tray 202 and enter the inside of the CD radio cassette, resulting in poor operability.

[0012]

In order to solve the above-mentioned problems, the disk mounting apparatus according to claim 1 is provided in a disk driving apparatus for driving a disk, and a tray housing member for housing a tray. In a disc mounting device for mounting a disc, which is provided with a tray that reciprocates between a disc reproducing position for recording / reproducing a disc and a disc attaching / detaching position for attaching / detaching a disc, the disc is rotatably fixed to the tray and the disc is rotated. A turntable for rotating the turntable, which is fixed to the tray storage member, and rotationally drives the turntable, and when the tray is closed, the tray is moved so that the turntable reaches the rotation driving unit, while the tray is opened. Tray movement guide means for moving the tray so that the turntable is disengaged from the rotation drive unit according to the operation. It is characterized in that is provided.

According to a second aspect of the present invention, there is provided the disc mounting apparatus according to the first aspect, wherein the tray movement guide means applies a part of a force applied to the tray in a substantially horizontal direction by closing the tray. Is converted to a substantially vertical direction,
Guide grooves for guiding the tray in a direction inclined by a predetermined inclination angle, and on both side surfaces in the width direction with respect to the opening / closing direction of the tray, so as to fit into the guide grooves, respectively, from the end portion on the closing direction side of the tray. The first to third support members standing upright at the same distance, the first support member provided at the end of the tray in the closing direction, and the straight line connecting the two support members are the turntables. It is characterized in that a second support member provided so as to pass through the rotary shaft and a third support member provided at a substantially central position between the first support member and the second support member are provided.

According to a third aspect of the present invention, there is provided a disc mounting device according to the first or second aspect, further comprising a disc narrowing member for narrowing the disc in cooperation with the turntable. , A guide groove that converts a part of the force applied to the tray in the horizontal direction by the closing operation of the tray to the vertical direction and guides the tray in a direction inclined by a predetermined inclination angle. The engaging member is provided with a first engaging portion and a second engaging portion each having a concavo-convex portion so that they are rotatably engaged with each other, and an inclination angle of the concavo-convex portion of the first and second engaging portions. However, it corresponds to the inclination angle of the guide groove.

A disk mounting apparatus according to a fourth aspect is the disk mounting apparatus according to the first aspect, wherein horizontal guide means for guiding the movement of the tray in the horizontal direction and both side surfaces in the width direction with respect to the opening / closing direction of the tray are provided. A horizontal support member that is erected at the same distance from the end of the tray in the closing direction so as to be engaged with the horizontal guide means, and a tray storage member that is provided in the tray storage member and supports the tray when opening and closing the tray. A tray guide portion and an engaging portion which is provided on the tray and which engages with the tray guide portion when the tray is opened and closed and moves along the tray guide portion with the movement of the tray are provided. .

According to a fifth aspect of the present invention, there is provided the disc mounting apparatus according to the first aspect, wherein when the tray reaches the disc reproducing position, the tray engages with the tray and moves the tray to the disc attaching / detaching position. Tray locking means to prevent,
The locked portion provided on the tray for engaging with the tray locking means and the engagement between the tray locking means and the locked portion when the tray is pushed to a predetermined disengagement position On the other hand, the engagement releasing means is always provided at the engagement permitting position for permitting the engagement between the tray locking means and the locked portion when the tray is not pushed in the engagement releasing position direction. It is characterized by that.

According to a sixth aspect of the present invention, there is provided the disc mounting apparatus according to the first aspect, wherein one of the plurality of discs having different diameters has a diameter substantially equal to that of the turntable. Among the above, two take-out holes for attaching and detaching the disc are provided around the circumference of the portion on which the disc having a smaller diameter than the disc is placed so as to be symmetrical with respect to the center of the turntable. I am trying.

According to a seventh aspect of the present invention, there is provided the disc mounting apparatus according to the first aspect, wherein the tray movement guide means applies a part of the force applied to the tray in the horizontal direction by the tray closing operation. It is a guide groove that is converted to a vertical direction and guides the tray in a direction inclined by a predetermined inclination angle, and is closed on both sides of the tray in the width direction with respect to the opening / closing direction of the tray so that the tray is closed. A support member is provided upright at the same distance from the end on the direction of formation and has a first gear formed around the axis thereof, and a portion of the guide groove through which the support member passes when the tray is opened and closed. In addition, a second gear that meshes with the first gear formed on the support member is formed.

[0019]

Since the turntable is fixed to the tray by the structure described in claim 1, it is possible to increase the size and mass of the diameter of the turntable.

Therefore, since the turntable can firmly hold the disc, even if the disc is reproduced with a loud sound, the resonance of the disc caused by the sound pressure from the speaker and the vibration given to the device are sufficiently caused. Can be suppressed. This makes it possible to stabilize the rotation operation of the disc and prevent the sound skip phenomenon.

Further, since the rotation driving unit is fixed to the tray housing member, it is possible to reduce the vibration rattle of the entire apparatus, as compared with the conventional system in which the disk rotation driving unit is moved up and down.

Therefore, the resonance of the disk caused by the sound pressure from the speaker and the vibration applied to the device can be sufficiently suppressed. Thereby, the rotating operation of the disk can be further stabilized, and the sound skip phenomenon can be prevented.

Further, when the tray closing operation is performed, the tray is moved by the tray moving guide means so that the turntable reaches the rotation drive unit, and when the tray opening operation is performed, the tray closing operation is also performed. Since the tray is moved by the tray movement guide means so as to separate the turntable from the rotation drive unit, a drive mechanism for detachably moving the rotation drive unit and the turntable is unnecessary.

Therefore, the number of parts for making the disk mounting apparatus can be reduced, and the cost performance can be improved.

Further, since the turntable is fixed to the tray, when the disc is mounted, the disc is placed directly on the turntable. As a result, even during the opening / closing operation of the tray, the disc can support not only the edge portion but also the central portion, and the mounting state is stable. Therefore, it is configured to be opened / closed by a force applied by fingers or an elastic force of a spring or the like, and even if the disc is suddenly opened / closed, there is no possibility that the disc will shift from the tray and enter the inside of the device.

Therefore, it becomes possible to drive the tray in the opening / closing operation of the tray by the elastically biasing member such as the spring used in the top open type, and the same number of parts and cost as the top open type. The tray opening / closing operation can be controlled by. As a result, the number of parts for making the disk mounting apparatus can be further reduced, and the cost performance can be further improved.

Further, since the mounted state of the disc is stable even during the opening / closing operation of the tray as described above, the disc mounting device is inadvertently tilted or carried around until the disc is placed on the tray and the tray is closed. However, there is no risk that the disc will slip out of the tray and enter the inside of the device. Thereby, the operability is improved.

According to the second aspect of the invention, the first
By providing the third support member, when the tray is pushed in the opening / closing direction, the tray moves smoothly in the opening / closing direction and the vertical direction.

Therefore, members such as a driving member and a pulley for moving the tray in the opening / closing direction and in the vertical direction are unnecessary. As a result, the number of parts for forming the disk loading device can be reduced and the cost performance can be improved. At the same time, since the mounted state of the disc becomes stable when the tray is opened, the operability is improved.

Further, by the first to third support members,
The tray is supported at the ends of the tray, the center of the turntable, and three or six points in the middle of them. Therefore, the member for smoothly moving the tray can be used also as the member for keeping the tray always horizontal. As a result, the number of parts for manufacturing the disc mounting device can be further reduced, and the cost performance can be further improved.

The tray is supported on the straight line passing through the center of the turntable by the second support member. Therefore, the resonance of the tray itself due to the sound pressure from the speaker and the vibration applied to the device can be sufficiently suppressed. Thereby, the rotating operation of the disk can be further stabilized, and the sound skip phenomenon can be prevented.

According to the third aspect of the present invention, the turntable easily reaches the disc narrowing member by the first and second engaging portions, so that the disc can be more reliably fixed by the turntable and the disc narrowing member. You can wear it tightly. As a result, the rotation operation of the disc can be made more stable, and the sound skip phenomenon can be further prevented.

According to the structure described in claim 4, when the tray starts to open, the engaging portion engages with the tray guide portion and moves along the tray guide portion as the tray moves. At the same time, the horizontal support member similarly moves while being engaged with the horizontal guide means. The tray reaches the disc loading / unloading position while maintaining this state.

Therefore, even when the tray reaches the disc mounting / removing position, by the two members of the engaging portion and the tray guide portion, and the horizontal supporting member and the horizontal guiding means,
The tray is kept horizontal and fixed.

Therefore, when the tray is opened, the mounted state of the disc becomes stable. Thereby, the operability is improved.

At the same time, it is not necessary to increase the depth of the tray in order to balance the tray when the tray is opened. As a result, the depth of the disk drive device can be shortened, so that the disk drive device can be downsized.

According to the fifth aspect of the present invention, when the engagement releasing means is not pushed, the engagement releasing means is always in the engagement permitting position, so that the tray locking means and the locked portion are engaged with each other. , The tray is fixed at the disc playback position.

On the other hand, when the disengagement means is pushed to the disengagement position while the tray is at the disc reproducing position, the engagement between the tray locking means and the locked portion is released. Then, the tray can be moved to the disc mounting / removing position.

Therefore, it is possible to control the opening / closing operation of the tray with the same number of parts and cost as the top open type. As a result, the number of parts for forming the disk loading device can be reduced and the cost performance can be improved.

Further, when the disengagement means is not pushed, the disengagement means is always located at the engagement allowable position.
There is no need to separately provide a member for urging the engagement releasing means in the engagement allowable position direction.

As a result, the number of parts for making the disk mounting apparatus can be reduced, and the cost performance can be improved.

According to the sixth aspect of the invention, the area of the portion of the turntable that actually supports the disk is increased, so that the disk is supported more firmly by the turntable, and the vibration of the disk can be further prevented.

As a result, the rotating operation of the disk can be further stabilized and the sound skip phenomenon can be prevented more effectively.

Further, since the entire disc is supported by the turntable, it is possible to prevent the disc from warping due to its own weight, and to reduce the load on the servo control circuit of the pickup for stable reproduction. As a result, the rotational movement of the disc can be further stabilized.

Further, by putting a finger on the take-out hole, a disc smaller than the turntable can be easily attached and detached, and the operability is improved.

According to the structure described in claim 7, even if the tray is strongly pushed in the opening direction, the first gear and the second gear absorb the pushing force, so that the tray can be opened slowly.

Therefore, the tray drive during the opening / closing operation of the tray can be performed by an elastically urging member such as a spring used in the top open type. As a result, the number of parts for forming the disk loading device can be reduced and the cost performance can be improved.

At the same time, since the mounted state of the disc becomes stable when the tray is opened, the operability is improved.

[0049]

【Example】

[Embodiment 1] One embodiment of the present invention will be described with reference to FIGS.
The explanation is based on the following. As shown in FIG. 1, the disc mounting device of the present embodiment is provided in a cabinet 3 (tray storage member) of a CD radio-cassette (disc drive device) that drives a CD (compact disc).

In the cabinet 3, there is provided a tray 2 which reciprocates between a disc reproducing position for recording / reproducing the disc 1 shown in FIG. 1 and a disc attaching / detaching position for attaching / detaching the disc 1. FIG. 2 is a virtual illustration of a state in which the disc 1 has come to the disc loading / unloading position.

On the upper surface of the tray 2 shown in FIG. 1, a turntable 4 on which the disk 1 is placed and which rotates the disk 1 is rotatably fixed to the tray 2 slightly forward of the center. Therefore, it is possible to increase the diameter and the mass of the turntable 4. Therefore, since the turntable 4 can firmly hold the disc 1, even if the disc 1 is reproduced with a loud sound, the resonance of the disc 1 caused by the sound pressure from the speaker and the vibration given to the device are sufficiently generated. Can be suppressed. As a result, the rotation operation of the disk 1 can be stabilized and the sound skip phenomenon can be prevented.

On the side surface 2a of the tray 2 facing the front of the drawing, when the tray 2 is closed, the tray 2 is lifted in accordance with the closing operation of the tray 2, that is, the rightward movement in the drawing. Sloping grooves 6a, 6b, 6c and a horizontal horizontal groove 7 having the same slant angle are provided for lowering the tray 2 in association with the opening operation, that is, the movement to the left in the drawing. The inclined grooves 6a, 6b, 6c and the horizontal groove 7 constitute tray movement guide means. The horizontal groove 7 also functions as horizontal guide means.

Further, on the side surface (not shown) of the tray 2 facing inward from the drawing, similarly to the above, the inclined grooves 6a, 6 are formed.
Each groove (tray movement guide means) corresponding to each of b, 6c and the horizontal groove 7 is provided.

The inclined groove 6 is formed on the side surface 2a of the tray 2.
a pin 6a (first support member and horizontal support member) located at the end of the tray 2 on the closing direction side (right end in the figure) so as to fit into the a, 6b, 6c and the horizontal groove 7, respectively;
A pin 8b (second support member) positioned so that a straight line connecting the two pins passes through the rotation axis of the turntable 4;
8c (3rd pin
And a support member). Further, similarly to the above, on the side surface (not shown) facing the back of the tray 2 from the drawing, pins (not shown) corresponding to the pins 8a, 8b and 8c (first to third support members and horizontal support) are respectively provided. Members) are provided.

As described above, since the tray 2 is supported on the straight line passing through the center of the turntable 4 by the pin 8b, the tray 2 caused by the sound pressure from the speaker is caused.
It is possible to sufficiently suppress the resonance of itself and the vibration applied to the device. Thereby, the rotating operation of the disk 1 can be further stabilized, and the sound skip phenomenon can be prevented.

Further, by providing the pin 8c between the pins 8a and 8b, the resonance of the tray 2 itself and the vibration applied to the device can be further suppressed, so that the rotating operation of the disk 1 can be further improved. It can be stabilized and the skipping phenomenon can be prevented.

Further, in the cabinet 3, a CD mechanism 5 (rotational drive section) for rotationally driving the turntable 4 is provided.
Is provided. In the cabinet 3, the boss 21
21 is hung from above. The CD mechanism 5 is fixed to the cabinet 3 through the silicone rubber cushions 22 and 22 on the bosses 21 and 21, respectively, and further using the screws 23 and 23. Therefore, it is possible to reduce the vibration play of the entire apparatus as compared with the conventional method of moving the disk rotation drive unit up and down. Therefore, the resonance of the disk 1 caused by the sound pressure from the speaker and the vibration applied to the device can be sufficiently suppressed. Thereby, the rotating operation of the disk 1 can be further stabilized, and the sound skip phenomenon can be prevented.

The CD mechanism 5 is connected to the motor driver unit 103 shown in FIG.
A spin motor 9 for driving the disk is provided, and a disk retainer 10 for holding the disk 1 in cooperation with the turntable 4 is press-fitted on the drive shaft of the spin motor 9.
The disc retainer 10 is provided with a ring magnet 24 which is a magnet attracting the turntable 4 in a rotatable manner, while the turntable 4 is provided with a ring magnet 25 which is a magnet attracting the ring magnet 24. The disc holder 10, the ring magnet 24, and the ring magnet 25 constitute a disc narrowing member. However, if the weight of the disk 1 and the turntable 4 is not too heavy, either the ring magnet 24 or the ring magnet 25 may be a ring plate using a magnet adsorbing material.

The turntable 4 is provided with a convex portion 4a (second engaging portion) which engages with the center hole (not shown) of the disc 1, and the disc retainer 10 is rotatable with the turntable 4 in rotation. A concave portion 10a (first engaging portion) that engages with the convex portion 4a is provided as much as possible. The inclination angles of the concave and convex portions of the concave portion 10a and the convex portion 4a match the inclination angles of the inclined grooves 6a, 6b and 6c.

Therefore, the turntable 4 easily reaches the disc retainer 10 and the ring magnet 24, so that the disc 1 can be more reliably narrowed by the turntable 4, the disc retainer 10, the ring magnet 24, and the ring magnet 25. You can wear it. As a result, the rotating operation of the disc 1 can be further stabilized, and the sound skip phenomenon can be further prevented.

Further, on the rear surface side (right side in the figure) of the cabinet 3, a projection 2c is provided on the upper surface of the tray 2, and the projection 2c elastically moves and drives the tray 2 to a disc attaching / detaching position. One end of transportation means is included. The other end of the register spring 12 is hooked on a hook portion 26 formed on the cabinet 3. Further, a stopper 27 is formed on the cabinet 3 so that the register spring 12 does not come off from the hook portion 26.

In this case, since the elasticity limit of the register spring 12 may be exceeded, a large spring is required.
It is preferable to use a spring made of a nickel-titanium alloy because it has a large strength and can sufficiently urge the tray 2.

On the other hand, on the front side (left side in the figure) of the cabinet 3, when the tray 2 comes to the disc reproducing position,
A lock lever 11 (tray locking means) is provided to prevent the tray 2 from moving to the disc loading / unloading position. On the other hand, the tray 2 has a hole 2d that engages with the lock lever 11.
(Locked part) is provided.

Similarly, when the lock lever 11 and the hole 2d are disengaged from the front side of the cabinet 3 when pushed to a predetermined position (disengagement position), the lock lever 11 is disengaged in the disengagement position direction. The eject button 13 shown in FIG. 3 is provided at a position (engagement allowance position) that allows the lock lever 11 and the hole 2d to be engaged with each other when it is not pushed.

A spring receiving portion 3a is provided on the front side of the cabinet 3, and the spring receiving portion 3a is provided.
A spring 28 for constantly urging the eject button 13 in the left direction in the drawing is provided in a. A recess 13a is provided on the surface of the eject button 13 that contacts the spring 28, and the spring 28 is held by the spring receiving portion 3a and the recess 13a. The eject button 13 and the spring 28 constitute an engagement releasing means.

Further, the front surface of the cabinet 3 is provided with a concave portion 3b (tray guide portion) for guiding the tray when opening and closing the tray. On the other hand, at the bottom of the tray 2,
A rib 2b (engaging portion) that fits into the recess 3b when the tray 2 is opened and closed and slides along the recess 3b as the tray 2 moves.
Is provided.

Further, on the front side of the cabinet 3, there is an open / close recognition switch 30 for notifying the control microcomputer in the control unit 104 shown in FIG. 3 whether the tray 2 is open or closed. It is provided. The opening / closing recognition switch 30 is provided with pieces 30a, 30b, and 30c in order from the left in the figure. When the tray 2 is closed, the piece 30b is pushed rightward in the figure to bring the pieces 30b and 30c into contact with each other. A hitting part (not shown) for turning on is provided.
On the other hand, on the lower right part of the tray 2 in the drawing, a rib 31 is erected for pushing the piece 30b leftward in the drawing to bring the pieces 30b and 30a into contact with each other to turn them on when the tray is opened.
The opening / closing information of the tray 2 input to the control microcomputer is transmitted to the CD signal processing unit 105 shown in FIG.

The disk mounting apparatus of this embodiment has the circuit configuration shown in FIG. That is, the servo control unit 102 for stable reproduction is connected to the optical pickup unit 101, the motor driver unit 103 that controls various motors and switches, and the control unit 104. further,
The optical pickup unit 101, the servo control unit 102, the motor driver unit 103,
The control unit 104 and the DA converter 106 for DA (digital / analog) conversion of the information read from the disc 1 are provided in the CD signal processing unit 105.
It is connected to the. The spin motor 9 is connected to the motor driver unit 103, and the eject button 13 and the open / close recognition switch 30 are connected to the control unit 104.

Next, the opening / closing operation of the tray 2 will be described. When the disk 1 is mounted and closed, the operator first places the disk 1 on the turntable 4 provided on the tray 2.

Next, the operator pushes the front portion of the tray 2 toward the inside of the cabinet 3. Then, the tray 2 moves inward along the horizontal groove 7 and, at the same time, the inclined grooves 6a, 6
Rise along b and 6c.

When the tray 2 comes to the disc reproducing position, the turntable 4 is coupled with the disc retainer 10 and the lock lever 11 is moved downward to engage with the hole 2d of the tray 2 so that the tray 2 is disc-shaped. Prevents moving to the attachment / detachment position.

Further, the abutting portion (not shown) of the tray 2 pushes the section 30b in the right direction in the figure to cut the sections 30b and 3b.
The control microcomputer in the control unit 104 is informed that the tray 2 is in the closed state by bringing it into contact with 0c to turn it on.

On the other hand, when the tray 2 is opened and the disc 1 is detached, the operator first pushes the eject button 13. Then, the lock lever 11 moves upward and is disengaged from the hole 2d of the tray 2. Then, the tray 2 is urged to the disc attachment / detachment position by the urging force of the dragonfly spring 12, and the movement in the opening direction is started.

When the tray 2 starts to open, the rib 2b
However, it fits in the recess 3b and slides along the recess 3b as the tray 2 moves. At the same time, the pin 8a similarly moves in a state of being fitted in the horizontal groove 7. While maintaining this state, the tray 2 reaches the disc attaching / detaching position. Thus, not only while the tray 2 is moving, but also when the tray 2 reaches the disc mounting / removing position, the tray 2 is horizontally moved by the two sets of the rib 2b and the recess 3b, and the pin 8a and the horizontal groove 7. To be fixed. Therefore,
When the tray 2 is opened, the mounted state of the disc 1 becomes stable. Thereby, the operability is improved. With that,
It is not necessary to increase the depth of the tray 2 in order to balance the tray 2 when the tray 2 is opened. Thereby,
Since the depth of the disk drive device can be shortened, the disk drive device can be downsized.

The rib 31 of the tray 2 pushes the slice 30b to the left in the figure to bring the slices 30b and 30a into contact with each other to turn them on, and inform the control microcomputer in the control unit 104 that the tray 2 is in the open state. To be done.

Further, with the above-mentioned structure, in the disc mounting apparatus of this embodiment, the turntable 4 is fixed to the tray 2. Therefore, when the disc 1 is mounted, the turntable 4 is fixed.
The disk 1 will be placed directly on the. as a result,
Even during the opening / closing operation of the tray 2, the disc 1 can support not only the edge portion but also the central portion, and the mounted state is stable. Therefore, the disc 1 is configured to be opened and closed by a force applied by fingers or an elastic force of a spring or the like, and there is no possibility that the disc 1 may be displaced from the tray 2 and enter the inside of the device even if the disc 1 is suddenly opened and closed.

Therefore, the tray drive in the opening / closing operation of the tray 2 can be performed by the elastically biasing member such as the spring used in the top open type, and the same number of parts and cost as the top open type. The open / close operation of the tray 2 can be controlled by and. As a result, the number of parts for forming the disk loading device can be reduced and the cost performance can be improved.

At the same time, the mounted state of the disk 1 is stable even during the opening / closing operation of the tray 2, so that the tray 2
Even if the disc loading device is inadvertently tilted or carried around until the disc 1 is placed on the tray and the tray 2 is closed,
There is no risk that the disc 1 will shift from the tray 2 and enter the inside of the device. Thereby, the operability is improved.

When the tray 2 is closed, the tray 2 is moved by the inclined grooves 6a, 6b, 6c and the horizontal groove 7 so that the turntable 4 reaches the CD mechanism 5, while the tray 2 is closed. When you open the
Along with that, the tray 2 is also moved by the inclined grooves 6a, 6b, 6c and the horizontal groove 7 so that the turntable 4 is separated from the CD mechanism 5, so that the CD mechanism 5 and the turntable 4 are attached to and detached from each other. A drive mechanism for moving the unit as much as possible is unnecessary. Therefore,
The number of parts for making a disc loading device is small, and cost performance is improved.

Further, by providing the pins 8a, 8b and 8c as described above, when the tray 2 is pushed in the opening / closing direction, the tray 2 moves smoothly in the opening / closing direction and the vertical direction. Therefore, a member such as a driving member or a pulley for moving the tray 2 in the opening / closing direction and the vertical direction is unnecessary. As a result, the number of parts for forming the disk loading device can be reduced and the cost performance can be improved. At the same time, the mounted state of the disc 1 becomes stable when the tray 2 is opened, and thus the operability is improved.

Also, since the pins 8a, 8b and 8c support the tray 2 at the ends of the tray 2, the center of the turntable 4, and the three points, that is, the six points, in the center thereof, the tray 2 is made smooth. The member for moving and the member for keeping the tray 2 always horizontal can be used together. As a result, the number of parts for manufacturing the disc mounting device can be further reduced, and the cost performance can be further improved.

Further, as described above, when the eject button 13 is not pushed, the eject button 13 is always positioned at the engagement permitting position, the lock lever 11 and the hole 2d of the tray 2 are engaged, and the tray 2 is It is fixed at the disc playback position. On the other hand, when the eject button 13 is pushed to the disengagement position when the tray 2 is at the disc reproducing position, the lock lever 11 is disengaged from the hole 2d of the tray 2 and the tray 2 is moved by the register spring 12. Move to the disc loading / unloading position. Therefore, the opening / closing operation of the tray 2 can be controlled with the same number of parts and cost as the top open type. As a result, the number of parts for forming the disk loading device can be reduced and the cost performance can be improved.

[Embodiment 2] Another embodiment of the present invention will be described below with reference to FIG. For convenience of explanation, members having the same functions as those of the members shown in the drawings of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In this embodiment, as shown in FIG.
A molding spring 41a as a mechanism for fixing the tray 2 to the disc reproducing position is molded at the same time as the eject button 41b to form an eject member 41 (engagement releasing means).

Therefore, when the eject member 41 is not pushed, the eject member 41 is always located at the engagement allowable position, and it is not necessary to separately provide a member for urging the eject button 41b toward the engagement allowable position.

As a result, as compared with the case where the separate spring 28 is formed as in the first embodiment, the number of parts for forming the disk mounting device can be reduced and the cost performance can be improved.

[Embodiment 3] The following description will discuss still another embodiment of the present invention with reference to FIGS. 3 and 5. For convenience of explanation, members having the same functions as those of the members shown in the drawings of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the disk mounting apparatus of this embodiment,
As shown in FIG. 5, the diameter of the turntable 51 is substantially equal to the diameter of one of the plurality of discs having different diameters (disc A) (for example, 12 cm). Then, in the circumference of the portion of the turntable 51 on which a disc (for example, 8 cm) having a diameter smaller than that of the disc (for example, 8 cm) is placed, the fingers are placed so as to be symmetrical with respect to the center of the turntable 51. Two take-out holes 51 for attaching and detaching the disc B with a diameter that allows
a * 51a is provided.

With the above construction, the area of the portion of the turntable 51 that actually supports the disk is increased, so that the disk is supported more firmly by the turntable and the vibration of the disk can be further prevented. Thereby, the rotation operation of the disk can be further stabilized, and the sound skip phenomenon can be prevented more effectively.

Also, the entire disc is the turntable 51.
Since it is supported by, the warp due to the weight of the disc can be prevented, and the load on the servo control unit 102 for controlling the optical pickup unit 101 for stable reproduction shown in FIG. 3 can be reduced. . As a result, the rotational movement of the disc can be further stabilized.

Further, by putting fingers on the take-out holes 51a, 51a, the disc B smaller than the turntable 51 can be easily attached and detached, and the operability is improved.

[Fourth Embodiment] The following description will explain still another embodiment of the present invention with reference to FIG.
For convenience of explanation, members having the same functions as those of the members shown in the drawings of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The inclined groove 63 and the horizontal groove 6 are formed on both side surfaces 2a, 2a of the tray 2 in the width direction with respect to the opening / closing direction of the tray 2.
4, the pin 61 (supporting member) is erected at the same distance from the end of the tray on the closing direction side and has a damper gear 62 (first gear) formed around the shaft thereof. It is provided. The pin 61 also functions as a first support member and a horizontal support member.

On the other hand, a gear 64a (second gear) that meshes with the damper gear 62 is formed on the inner bottom of the horizontal groove 64.

In this case, the length of the pin 8c is longer than that of the damper gear 62, and the length of the pin 8b is the length of the pin 8c.
It is formed longer than c.

With the above structure, even if the tray 2 is strongly pushed in the opening direction, the damper gear 62 and the gear 64 are
Since a absorbs the pushing force, the tray 2 can be opened slowly.

Therefore, the tray drive in the opening / closing operation of the tray 2 can be performed by an elastically urging member such as a spring used in the top open type. As a result, the number of parts for forming the disk loading device can be reduced and the cost performance can be improved.

At the same time, the mounted state of the disc becomes stable when the tray 2 is opened, so that the operability is improved.

[Fifth Embodiment] The following description will explain still another embodiment of the present invention with reference to FIG.
For convenience of explanation, members having the same functions as those of the members shown in the drawings of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 7, the eject button 13
The tray motor 71 that opens and closes the tray 2 in conjunction with
It is fixed to the tray 2. And tray motor 7
The pulley 72 is press-fitted into the shaft 1. On the other hand, a pulley 73 is press-fitted into the shaft of a pin 61 (support member, first support member, horizontal support member) located at the end of the tray 2 on the closing direction side (right end in the figure). Then, the pulley 72 and the pulley 73 are connected by the belt 74. The tray motor 71, the pulley 72, the pulley 73 and the belt 74 constitute a tray moving means.

By pushing the eject button 13, the tray motor 71 can be rotated normally and reversely to open and close the tray 2.

[0102]

As described above, the disk mounting apparatus according to the first aspect is provided in the disk driving apparatus for driving the disk, and includes a tray housing member for housing the tray and a disk for recording / reproducing the disk. In a disk loading device for loading a disk, which has a tray that reciprocates between a playback position and a disk loading / unloading position, a turntable that is rotatably fixed to the tray and that rotates the disk, and a tray storage The rotation drive unit is fixed to the member and rotates the turntable, and the tray is moved so that the turntable reaches the rotation drive unit when the tray is closed, and the turntable is opened when the tray is opened. And a tray movement guide means for moving the tray so that the tray separates from the rotation drive section. .

Therefore, the resonance of the disk caused by the sound pressure from the speaker and the vibration applied to the device can be sufficiently suppressed, so that the rotating operation of the disk can be stabilized and the sound skip phenomenon can be prevented. The effect is that it can be prevented.

Further, since the drive mechanism for detachably moving the rotary drive unit and the turntable with each other is unnecessary, the opening / closing operation of the tray can be controlled with the same number of parts and cost as the top open type. The number of parts for manufacturing the disk mounting device is small, and the cost performance is improved.

Further, since the mounted state of the disc is stable even during the opening / closing operation of the tray, even if the disc mounting device is inadvertently tilted or carried around until the disc is placed on the tray and the tray is closed. There is no risk that the disc will slip out of the tray and enter the inside of the device. As a result, the operability is improved.

According to a second aspect of the present invention, there is provided the disc mounting apparatus according to the first aspect, wherein the tray movement guide means is a part of the force applied to the tray in a substantially horizontal direction by the closing operation of the tray. Is converted to a substantially vertical direction,
Guide grooves for guiding the tray in a direction inclined by a predetermined inclination angle, and on both side surfaces in the width direction with respect to the opening / closing direction of the tray, so as to fit into the guide grooves, respectively, from the end portion on the closing direction side of the tray. The first to third support members standing upright at the same distance, the first support member provided at the end of the tray in the closing direction, and the straight line connecting the two support members are the turntables. This is a configuration including a second support member provided so as to pass through the rotary shaft, and a third support member provided at a substantially central position between the first support member and the second support member.

Therefore, since members such as a driving member and a pulley for moving the tray in the opening / closing direction and the vertical direction are not required, the number of parts for forming the disc mounting device can be reduced and the cost performance can be improved. Play.

At the same time, since the mounted state of the disc becomes stable when the tray is opened, the operability is improved.

Further, since the member for smoothly moving the tray and the member for keeping the tray always horizontal can be used together, the number of parts for making the disc loading apparatus can be further reduced and the cost performance can be improved. The effect is further improved.

Further, since the resonance of the tray itself caused by the sound pressure from the speaker and the vibration applied to the device can be sufficiently suppressed, the rotating operation of the disk can be further stabilized, and the sound skipping phenomenon can be caused. There is an effect that can be prevented.

According to a third aspect of the present invention, there is provided the disc mounting device according to the first or second aspect, further comprising a disc narrowing member for narrowing the disc in cooperation with the turntable. , A guide groove that converts a part of the force applied to the tray in the horizontal direction by the closing operation of the tray to the vertical direction and guides the tray in a direction inclined by a predetermined inclination angle. The engaging member is provided with a first engaging portion and a second engaging portion each having a concavo-convex portion so that they are rotatably engaged with each other, and an inclination angle of the concavo-convex portion of the first and second engaging portions. Is a configuration that matches the inclination angle of the guide groove.

Therefore, the rotating operation of the disk can be made more stable, and the sound skip phenomenon can be further prevented.

A disk mounting apparatus according to a fourth aspect is the disk mounting apparatus according to the first aspect, wherein horizontal guide means for guiding the movement of the tray in the horizontal direction and both side surfaces in the width direction with respect to the opening / closing direction of the tray are provided. A horizontal support member that is erected at the same distance from the end of the tray in the closing direction so as to be engaged with the horizontal guide means, and a tray storage member that is provided in the tray storage member and supports the tray when opening and closing the tray. The tray guide unit and the engaging unit that is provided on the tray and that engages with the tray guide unit when the tray is opened and closed and that moves along the tray guide unit as the tray moves.

Therefore, when the tray is opened, the mounted state of the disk becomes stable, and the operability is improved.

At the same time, since it is not necessary to increase the depth of the tray in order to balance the tray when the tray is opened, the depth of the disk drive can be shortened and the size of the disk drive can be reduced. Has the effect.

According to a fifth aspect of the present invention, there is provided the disc mounting apparatus according to the first aspect, wherein when the tray reaches a disc reproducing position, the tray is engaged with the tray and the tray is moved to the disc attaching / detaching position. Tray locking means to prevent,
The locked portion provided on the tray for engaging with the tray locking means and the engagement between the tray locking means and the locked portion when the tray is pushed to a predetermined disengagement position On the other hand, the engagement releasing means is always provided at the engagement permitting position for permitting the engagement between the tray locking means and the locked portion when the tray is not pushed in the engagement releasing position direction. It is a composition.

Therefore, the opening / closing operation of the tray can be controlled with the same number of parts and cost as the top open type, and the number of parts for making the disk mounting device can be reduced, so that the cost performance is improved. Play.

Further, since it is not necessary to separately provide a member for urging the engagement releasing means in the engagement permissible position direction, the number of parts for manufacturing the disc mounting apparatus can be reduced, too.
This has the effect of improving cost performance.

According to a sixth aspect of the present invention, there is provided the disc mounting apparatus according to the first aspect, wherein the diameter of one of the plurality of disks having different diameters is substantially equal to the diameter of the turntable. Among these, two take-out holes for attaching and detaching the disc are provided around the circumference of the portion on which the disc having a diameter smaller than that of the disc is placed so as to be symmetrical with respect to the center of the turntable. .

Therefore, since the disc is more firmly supported by the turntable and the vibration of the disc can be further prevented, the rotating operation of the disc can be further stabilized and the sound skip phenomenon can be prevented more effectively. There is an effect that can be.

Further, since the load on the servo control circuit of the pickup can be reduced, the rotation operation of the disk can be further stabilized, and the sound skip phenomenon can be more effectively prevented.

Further, a disc smaller than the turntable can be easily attached and detached, and the operability is improved.

According to a seventh aspect of the present invention, there is provided the disc mounting apparatus according to the first aspect, wherein the tray movement guide means applies a part of the force applied in the horizontal direction to the tray by the closing operation of the tray. It is a guide groove that is converted to a vertical direction and guides the tray in a direction inclined by a predetermined inclination angle, and is closed on both sides of the tray in the width direction with respect to the opening / closing direction of the tray so that the tray is closed. A support member is provided upright at the same distance from the end on the direction of formation and has a first gear formed around the axis thereof, and a portion of the guide groove through which the support member passes when the tray is opened and closed. And a second gear that meshes with the first gear formed on the support member.

Therefore, since the tray drive in the tray opening / closing operation can be performed by the elastically urging member such as the spring used in the top open type, the number of parts for making the disc loading device is small. This has the effect of improving cost performance.

At the same time, since the mounted state of the disc becomes stable when the tray is opened, the operability is improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the outline of the configuration of a disk mounting apparatus according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state when a tray is opened in the disc mounting apparatus of FIG.

FIG. 3 is a block diagram showing a configuration of a circuit for controlling the disc mounting device.

FIG. 4 is a cross-sectional view showing an outline of a configuration of a main part of a disk mounting apparatus according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view showing an outline of a configuration of a main part of a disk mounting apparatus according to still another embodiment of the present invention.

FIG. 6 is a cross-sectional view showing an outline of a configuration of a main part of a disk mounting apparatus according to still another embodiment of the present invention.

FIG. 7 is a cross-sectional view showing an outline of a configuration of a main part of a disk mounting apparatus according to still another embodiment of the present invention.

FIG. 8 is a cross-sectional view showing the outline of the configuration of a conventional disc mounting apparatus.

9A and 9B are schematic views showing the configuration of a conventional disk mounting apparatus, in which FIG. 9A is a horizontal sectional view and FIG. 9B is a vertical sectional view.

FIG. 10 is a cross-sectional view showing a state when the tray is opened in the conventional disc mounting apparatus.

[Explanation of symbols]

1 Disc 2 Tray 2b Rib (engagement part) 2d Hole (locked part) 3 Cabinet (tray storage member) 3b Recessed part (tray guide part) 4 Turntable 4a Convex part (second engaging part) 5 CD mechanism ( Rotation drive part 6a Inclined groove (tray movement guide means) 6b Inclined groove (tray movement guide means) 6c Inclined groove (tray movement guide means) 7 Horizontal groove (tray movement guide means, horizontal guide means) 8a Pin (first support) Member, horizontal support member) 8b pin (second support member) 8c pin (third support member) 10 disc retainer (disc narrowing member) 10a recess (first engaging portion) 11 lock lever (tray locking means) 12 Registration mark spring (tray moving means) 13 Eject button (engagement releasing means) 24 Ring magnet (disc narrowing member) 25 Ring magnet (disk (C) Narrowing member) 28 Spring (disengagement means) 41 Eject member (disengagement means) 51 Turntable 51a Extraction hole 61 Pin (support member, first support member, horizontal support member) 62 Damper gear (first gear) ) 64a gear (second gear) 71 tray motor (tray moving means) 72 pulley (tray moving means) 73 pulley (tray moving means) 74 belt (tray moving means)

Claims (7)

[Claims] 1. A disk drive device for driving a disk, comprising: a tray housing member for housing a tray; a tray for reciprocating a disk reproducing position for recording / reproducing the disk and a disk mounting / dismounting position for mounting / dismounting the disk In a disc mounting device for mounting a disc, a turntable rotatably fixed to a tray and rotating the disc, and a rotation drive unit fixed to the tray housing member and rotationally driving the turntable. , Tray movement that moves the tray so that the turntable reaches the rotation drive unit when the tray closes, and moves the tray that moves the turntable away from the rotation drive unit when the tray opens. A disk mounting device, characterized in that it is provided with a guide means. 2. The tray movement guide means converts a part of the force applied to the tray in a substantially horizontal direction by the closing operation of the tray into a substantially vertical direction, and the tray is moved in a direction inclined by a predetermined inclination angle. Guide grooves for guiding the trays, on both side surfaces in the width direction with respect to the opening / closing direction of the tray, so as to fit into the guide grooves, the first grooves are erected at the same distance from the end on the closing direction side of the tray. The first to third support members, wherein the first support member provided at the end of the tray in the closing direction and the straight line connecting the two support members pass through the rotary shaft of the turntable. 2. The disk mounting apparatus according to claim 1, further comprising a second support member and a third support member provided at a substantially central position between the first support member and the second support member. 3. A disc narrowing member for narrowing a disc in cooperation with a turntable is provided, and the tray movement guide means has a part of a force applied to the tray in the horizontal direction by the closing operation of the tray. Is a guide groove that converts the vertical direction into a vertical direction and guides the tray in a direction inclined by a predetermined inclination angle, and has a concavo-convex shape that engages the turntable and the disc narrowing member so that both can rotate. The 1st engaging part and the 2nd engaging part are each provided, and the inclination angle of the said unevenness | corrugation of the 1st and 2nd engaging part is in agreement with the inclination angle of the said guide groove, It is characterized by the above-mentioned. The disk mounting device according to 1 or 2. 4. A horizontal guide means for guiding the movement of the tray in the horizontal direction, and both side surfaces in the width direction with respect to the opening / closing direction of the tray so as to be engaged with the horizontal guide means. A horizontal support member that is installed upright at the same distance from the end, a tray guide part that is provided on the tray storage member and supports the tray when opening and closing the tray, and the tray guide part that is provided on the tray and when opening and closing the tray. 2. The disc mounting apparatus according to claim 1, further comprising an engaging portion that engages with the tray and that moves along the tray guide portion as the tray moves. 5. When the tray comes to the disc reproducing position,
Tray locking means that engages with the tray and prevents the tray from moving to the disc mounting / removing position, a locked portion that is provided on the tray and that engages with the tray locking means, and up to a predetermined disengagement position When pushed, the tray locking means and the locked portion are released from each other, while when the tray locking means and the locked portion are not pushed in the direction of the disengagement position, the tray locking means and the locked portion are always released. 2. The disc mounting apparatus according to claim 1, further comprising an engagement releasing means located at an engagement permitting position for permitting engagement with the disc. 6. The diameter of one of a plurality of disks having different diameters and the diameter of the turntable are substantially equal to each other, and the turntable has a diameter smaller than that of the disk. 2. The disc mounting device according to claim 1, wherein two take-out holes for attaching and detaching the disc are provided so as to be symmetrical with respect to the center of the turntable. 7. The tray movement guide means converts a part of the force applied to the tray in the horizontal direction by the closing operation of the tray to the vertical direction to guide the tray in a direction inclined by a predetermined inclination angle. Is a guide groove that is located on both sides of the tray in the width direction with respect to the opening and closing direction of the tray.
The tray is erected at a position at the same distance from the end of the tray on the closing direction side so as to fit in the guide groove, and the first portion is provided around the shaft.
A support member having a gear is provided, and a second gear that meshes with the first gear formed on the support member is formed in a portion of the guide groove through which the support member passes when the tray is opened and closed. The disk mounting apparatus according to claim 1, wherein: