JPH0255862B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a recording disc playback device that can automatically play a disc by taking out the disc from a disc case containing a disc-shaped recording medium (hereinafter referred to as a disc). It is related to.

Conventional technology Conventionally, in playback devices for high-density recording disks, such as video disks, the disk in a cylindrical disk case is manually inserted deep into the playback device, as disclosed in Japanese Patent Application Laid-Open No. 111158/1983. However, there were many playback devices that adopted a semi-automatic loading method in which empty cases were manually removed. In this case, there were a number of problems, such as the need to move the case back and forth significantly, and the difficulty of constructing a loading mechanism that would operate perfectly even under severe use by the user.

In addition, there was a market demand for automatic loading of tape cassettes from the front, such as in VTRs, and for traditional audio players to be equipped with automatic loading. For example, JP-A-59-93221 and JP-A-59-93226
The methods shown in the following publications have been proposed. This is equipped with a clamping means for clamping the disc and a transporting means for transporting it within the playback device, and the disc is automatically taken in and out of the case by the user just slightly inserting the disc case. It is. In this configuration, a transporting body holding a disc and a lid is guided by one rail and automatically reciprocates inside the playback device to take in and take out the disc, and the disc playback means is guided by another rail to move the disc in and out. It moves back and forth on the recording surface.

An example of the above-mentioned conventional recording disk reproducing apparatus will be described below with reference to the drawings.

Figures 4A and 4B are an external perspective view and a partial cross-sectional view showing an example of a conventional autoloading type recording disk reproducing device, and Figures 5, 6, and 7 are partial mechanisms and their operations. The figure is shown below. The main body of the playback device is roughly divided into a chassis 1, an outer case 2, a rotating body 3, an opener block 4 for opening the disk case, a chucking block 5 for taking out the disk,
A transfer block 6 that transfers the tracking block 5, detection switches 7 that detect the position of the tracking block 5, a lift mechanism 8 that guides the lifting and lowering of the disk, an opener block 4, and a lift mechanism 8.
It is composed of a loading block 9 for driving the disc, an arm housing 10 carrying a playback head, a sensor feed block 11 for transporting the arm housing 10 in the direction of the disk, etc. -Described in Publication No. 93221).

5A to 5D show a detailed front view and a plan view of the tracking block 5, FIG. 6 is a plan view when the disk is taken out from the case, and FIG. 7 is a plan view when the disk is moved inside the player. A plan view of the inside is shown.

Four rollers 21 are rotatably caulked and fixed to the movable base 20 by pins 22, and are engaged with the rails 23 as shown in the partial sectional view of FIG. 4B. Further, a roller 24 is supported on the movable base 20 so as to be rotatable around a pin 25. A clamp arm 26 is provided integrally with the movable base 20, and has a claw 26a for gripping the disk 12, and further holds a leaf spring section provided on the lid 14 inside the disk case 13, and holds the lid and the case together. A lid holding member 27 for releasing the engagement is also integrally constructed. The finger 28 has a claw 28a, is rotatably supported by a shaft 29, and is biased by a spring 30 in the direction of an arrow 31a in FIG.
Clampers 32, 3 that engage with the notch of the lid 14
3 are supported by pins 34 and 35, respectively, so as to be horizontally rotatable relative to the movable base 20. The clampers 32 and 33 also have driven shafts 39 and 4 guided by cam grooves 37 and 38 provided in a slider 36 that slides along the movable base surface.
There are 0's in each. The slider 36 has a substantially plate shape, and cam grooves 37 and 38 are guided by pins 34 and 35 to move substantially linearly in the direction of arrow _Y1 or _Y2 in FIG.

Further, a roller 41 that can rotate around a pin 19 is attached to the slider 36, and the pin 19 is press-fitted into a hole in the slider 36. Further, the slider 36 includes a protrusion 36a and a spring hook 3.
6b, the contact portion 36c, and a protrusion tapered portion 36d are integrally formed on the opposite surface of the protrusion portion 36a.
The spring 42 is loaded onto the spring hook portion of the movable base 20 and the spring hook portion 36b of the slider 36, so that the slider 36 is always biased in the direction of arrow _Y2 . The slider 36 has a tapered protrusion 36d.
When it is in the Y ₂ direction, it comes into contact with the finger 28 and the arrow
By sliding in the _Y1 direction, the contact is released and the finger 28 can be rotated. The rotating arm 43 is horizontally rotatably supported on the movable base 20 by a fulcrum 44, is biased counterclockwise by a spring 45, and includes a contact portion 43a that contacts the lid 14 and a projection portion. A slope-shaped contact portion 43b is formed to contact the contact portion 36a.

Reference numeral 46 denotes a contact plate, which is attached to the movable base 20 at a position where it can come into contact with the detection switches 7 inside the player.

A connecting piece 47 is connected to a belt provided on the transfer block 6 and attached to the movable base 20.

Next, the schematic structure of other members that come into contact with the tracking block 5 will be explained. The chassis 1 has a rail A50 which is integrally formed and comes into contact with a chucking roller 24, and a rail B52 which comes into contact with a roller 51 rotatably attached to the main body of the arm housing 10. Further, the roller 41 comes into contact with the chassis 1 and moves the slider 36 to Y ₁ ,
A tapered member 53 that is movable in _two Y directions;
A receiving member 54 that receives the lid 14 is also rotatably attached, and the slider 3 is in contact with the roller 41.
There is a lever 56 for moving 6 in the _Y1 direction.
The arm housing 10 is slidably attached to a shaft 55 fixed to the chassis 1.
Moving on rail B52, roller 51 and shaft 5
5 makes it movable. The player also has a switch 57 inside the player that contacts the abutting portion 36c of the slider 36 for changing the leading direction of the tracking from the _X1 direction to the _X2 direction.

The operation of the tracking block of the recording disk reproducing apparatus constructed as described above will be explained below.

The disk holder can be in the following three states.
The first state is the "lid and disk holding state".
In this state, the slider 36 is at a position closer to the direction of arrow _Y2 , and the clampers 32 and 33 are moved as shown in FIG. It holds the lid 14 and clamps the disk. At this time, the rotating arm 43 is in contact with the lid 14 at the contact portion 43a. The fingers 28 rotate in the direction of the arrow 31b as the protruding tapered portions 36d come into contact with each other in a tapered manner, so that the fingers 28 are in a state where they clamp the disk 12.
In this state, the outer periphery of the disk 12 is clamped between the claw 26a of the clamp arm 26 and the claw 28a of the finger 28, so that they are not in contact with the recording surface of the disk 12.

The second state is the "lid holding state". In this state, the lid 14 is latched and the disk 12 is not clamped, and the slider 36 is at a position approximately halfway between A and B in FIG. The clampers 32, 33 and the rotating arm 43 are all in the same state as the "lid and disk holding state". In this state, the slider 36 has moved slightly in the direction of arrow _Y1 compared to FIG.
It is opened in the direction a of arrow 31 by a biasing force of 0, and does not clamp the disk 12. This is transferred by the tracking block 5 and the tapered member 5
This state is caused by moving the slider 36 in the direction of arrow _Y1 while the roller 41 rides on the tapered portion 53a of No. 3.

The third state is a "non-retention state." In this state, as shown in FIG. 5B, the lid is not latched and the disc is not clamped. Slider 36 is 3
The clampers 32 and 33 are in an open state with their driven shafts 39 _and 40 guided by the cam grooves 37 and 38, respectively. As described above, the fingers 26 are open in the direction a of the arrow 31 and are in a state where they do not clamp the disk. The contact portion 43a of the rotating arm 43 contacts the protrusion 36a of the slider 36, and the slider 36 is restricted from sliding to the right ( _Y2 direction) in the figure by the biasing force of the spring 42. .
This position is when the tracking block 5 is transferred from behind the player to the front (X ₁ direction).
This is achieved by the roller 41 coming into contact with the lever 56 along the inclination and moving the slider 36 in the direction of arrow _Y1 .

These three states are all changes in state when the tracking block 5 is transferred within the player by the transfer block 6. At that time, the roller 2 moves on the rail A50 on the opposite side from the transfer block 6.
4 rotates to ensure smooth transfer.

On the other hand, the arm housing 10 is designed to move in the Y ₁ and Y ₂ directions when the disc 12 is inside the player and the tracking block 5 is stationary at the rear of the player; 55, and the other roller 51 is attached to the arm housing body which rotates on the rail B52 for smooth transfer. In this way, the rail A50 and the rail B52 intersect in substantially the same plane, and the transporting body and the regenerating means share a travel path at or near the intersection.

In addition, the reproducing means is required to have accuracy in terms of parallelism with the disk, clearance, etc., and for mass production, it must be adjusted to satisfy these factors, and the adjustment method is to guide the traveling of the reproducing means. The easiest method is to change the height and slope of the rail.

Problems to be Solved by the Invention However, in these configurations, since there is always a step at the intersection of the rails A50 and B52, the running of either the conveying body or the regeneration means is not smooth, and if the conveying body is If there is a step on the disc, the disc will be displaced or scratched, and if the step is large, the conveying body will get caught and stop midway, and if there is a step in the feed of the playback means, the reproduced image will be distorted. If this happens, it will lead to problems.

Therefore, the two rails must be completely on the same plane with no difference in level, making it necessary to process the chassis surface.Also, it is difficult to adjust the height and parallelism of the regeneration means, and it is difficult to adjust the height and parallelism of the regeneration means. The problem was that adjusting the height and parallelism and the height of the rollers running on the rail in the opposite direction of the shaft required extremely wasted man-hours and increased costs.

In view of the above-mentioned problems, the present invention realizes smooth running of the transport body and smooth running of the regenerating means by implementing a method of adjusting the regenerating means that does not require a lot of man-hours. The present invention provides a recording disk reproducing apparatus having a structure in which a transporting body and a reproducing means can run smoothly even when the transport member and reproducing means are moved smoothly.

Means for Solving the Problems In order to solve the above-mentioned problems, the recording disk reproducing apparatus of the present invention includes a disk case main body having an opening at one end for storing a disk on which a signal is recorded, and a disk case body that can be attached and detached from the opening. a disc case having a lid that can be engaged, release means for releasing the engagement between the opening and the lid, latching means for latching the lid, and a signal on the disc; a reproducing means that travels within the reproducing device to regenerate the disk; a clamping means that can be opened and closed for clamping the disk; a transporting means that reciprocates the latching means and the clamping means; a first rail for guiding the travel of the transfer means; and a second rail provided on the travel route of the regeneration means for guiding the travel of the regeneration means; At the intersection of the rails, the transfer means does not contact the second rail and transfers on the same plane as the first rail, and the regeneration means does not contact the first rail and transfers on the same plane as the second rail. It is configured to transport. Specifically, for example, this transfer means has a first rotating body and a second rotating body that guide a first rail, and a first rotating body is provided at the intersection of the first rail and the second rail. If there is a rotating body, the second rotating body comes into contact with the first rail to prevent the first rotating body and the second rail from coming into contact with each other.

Effects The present invention solves problems such as transfer errors, needle skipping, and disk clamping failures caused by the difference in level at the intersection of two rails that were conventionally provided for transferring the chuck mechanism and the arm housing by using the above-described configuration. Even if there is a step at the intersection, the robot moves within the same plane during transportation. That is, for example, two rollers on the transfer guide rail are held in the same plane by a chucking mechanism, and when one roller is transferred, the other roller rides on the transfer guide rail and prevents the step from falling. become.

Embodiment Hereinafter, a recording disk reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

Figures 1A and 1B are an external perspective view and a partial cross-sectional view of a recording disk reproducing apparatus according to a first embodiment of the present invention, and Figures 2 and 3 show a partial mechanism and its operation diagram. be.

The main body of the playback device is roughly divided into a chassis 61, an outer case 62, a rotating body 63, an opener block 64 that opens the case, a chucking block 65 that takes out the disc, a transfer block 66 that transports the chucking block 65, and a chucking block. Detection switches 67 for detecting the position of disk 65; lift mechanism 68 for guiding the disk up and down; loading block 69 for driving the opener block 64, lift mechanism 68, etc.; arm housing 70 equipped with a playback head;
sensor feed block 7 that sends the
It is made up of 1st class.

FIG. 2 shows the details of the tracking block 65 in a front view and a plan view, and FIG. 3 shows a plan view of the player with the disc removed.

Four rollers 81 are rotatably caulked and fixed to the movable base 80 by pins 82, and are engaged with the rails 83 as shown in the partial cross-sectional view of FIG. 1B. Further, two rollers 84 are supported on the movable base 80 so as to be rotatable around a pin 85. A clamp arm 86 is integrated with the movable base 80 and has a claw 86b for grasping the disk.
A lid holding member 87 that holds a leaf spring portion provided on the lid 14 in the case 3 and releases the engagement between the lid 14 and the case 13 is also integrally constructed. finger 88
has a claw 88a, is rotatably supported by a shaft 89, and is biased by a spring 90 in the direction of arrow 91a in FIG.

a clamper 92 that engages with a notch in the lid 14;
93 is a movable base 8 by 94 and 95, respectively.
It is supported so that it can rotate horizontally with respect to 0. Further, the clampers 92 and 93 have driven shafts 99 and 1 guided by cam grooves 97 and 98 provided in a slider 96 that slides along the movable base surface.
00 are integrally attached to each. The slider 96 is approximately plate-shaped, and the cam grooves 97 and 98 are connected to the pins 94 and 96.
5 and moves approximately linearly in the direction of arrow _Y1 or _Y2 in FIG.

Further, a roller 101 that can rotate around a pin 19 is attached to the slider 96.
9 is press-fitted and fixed into a hole of a slider 96.
Furthermore, the slider 96 is integrally formed with a protrusion 96a, a spring hook part 96b, an abutment part 96c, and a protrusion tapered part 96d on the opposite surface of the protrusion 96a.

The spring 102 is attached to the spring hanging portion 80 of the movable base 80.
a and a spring-loaded portion 96b of the slider 96, and the slider 96 is always biased in the direction of arrow _Y2 .

The protrusion tapered portion 96d is such that the slider 96 is Y ₂
When it is in the direction, it comes into contact with the finger 88 and arrow Y ₁
By sliding in the direction, the contact is released and the finger 88 can be rotated.

The rotating arm 103 is horizontally rotatably supported on the movable base 80 by a fulcrum 104 and biased counterclockwise by a spring 105.
A contact portion 103a that contacts the protrusion 96a and a contact portion 103b having a slope shape that contacts the protrusion 96a are formed.

Reference numeral 106 is a contact plate, which is placed on the movable base 80 at a position where it can come into contact with the detection switches 67 inside the player.
is attached to. 107 is a connecting piece;
It is connected to a belt provided on the transfer block 66 and attached to a movable base 80.

Next, the schematic structure of other members related to the tracking block 65 will be explained. Two chuck rollers 8 are integrally formed on the chassis 61.
There is a rail A110 that comes into contact with the main body of the arm housing 70, and a rail B112 that comes into contact with a roller 111 that is rotatably attached to the main body of the arm housing 70. Further, a roller 101 comes into contact with the chassis 61, and a tapered member 113 and a member 11 that receive the lid 14 make it possible to move the slider 96 in the Y ₁ and Y ₂ directions.
4. Also rotatably mounted roller 101
There is a lever 116 for moving the slider 96 in the _Y1 direction while making contact with the lever 116. The arm housing 70 has a shaft 115 fixed to the chassis 61.
It is slidably attached to rail B.
Roller 111 and shaft 115 moving on 112
It is now movable. A switch 117 that contacts the abutting portion 96c of the slider 96 that changes the running of the tracking block 65 from the _X1 direction to the _X2 direction is also installed inside the player.

The operation of the tracking block of the recording disk reproducing apparatus constructed as described above will be explained below.

The disk holder can be in the following three states.

The state shown in FIG. 1 is the "lid and disk holding state". In this state, the slider 96 is at a position closer to the direction of arrow _Y2.The clampers 92 and 93 are moved to the lid position as shown in FIG. 1
4 and is holding the disc between them. At this time, the rotating arm 103 is in contact with the lid 14 at the contact portion 103a. The finger 88 is shaped like an arrow 9 when the protruding tapered portion 96d comes into contact with the tapered part 96d.
It rotates in the direction 1b and becomes in a state where it grips the disk. In this state, the outer periphery of the disk is held between the claw 86a of the clamp arm 86 and the claw 88a of the finger 88, so that they are not in contact with the recording surface of the disk.

The second state is the "lid holding state". In this state, the lid is latched and the disk is not clamped, and the slider 96 is at a position approximately halfway between A and B in FIG. Clampers 92, 93, rotating arm 103
Both are in the same state as the "lid and disc holding state". In this state, the slider 96 is
Since the _protrusion taper portion 96d and the finger 88 are not in contact with each other, the finger 88 is opened in the direction a of the arrow 91 by the biasing force of the spring 90, and the disc is moved slightly in the direction of arrow Y1. It does not hold. This is a state in which the tracking block 65 is moved and the slider 96 is moved while the roller 10 rides on the tapered portion 113a of the tapered member 113.

The third state is a "non-retention state." In this state, as shown in FIG. 2B, the lid is not latched and the disc is not clamped. Slider 96 is 3
The clampers 92 and ₉₃ are in an open state with their driven shafts 99 and 100 guided by the cam grooves 97 and 98, respectively. As described above, the fingers 86 are opened in the direction a of the arrow 91 and are in a state where they do not clamp the disk. The rotating arm 103 is the contact portion 10
3a and the protrusion 96a of the slider 96 abut,
The biasing force of the spring 102 prevents the slider 96 from sliding to the right ( _Y2 direction) in the figure. This position is achieved when the tracking block 65 is moved forward from the back of the player (in the X ₁ direction) and the roller 101 comes into contact with the tilt of the lever 116 and moves the slider 96 in the Y ₁ direction. This is something that has been realized.

These three states are all changes in state when the tracking block 65 is transferred within the player by the transfer block 66, and at that time, the two rollers 84 rotate in the same way on the rail A110 on the opposite side from the transfer block 66. This will ensure smooth transfer.

On the other hand, the arm housing 70 is used when the disc is inside the player and the tracking block 65 is stationary at the rear of the player (Fig. 3).
It is designed to move in the Y ₁ and Y ₂ directions, and one side is guided by a chassis 115, and the other side is smoothly moved by a roller 111 rotating on a rail B112.

In addition, since the arm housing needs to maintain a certain height and parallelism with the disk, the height and inclination of the rail B112 are adjusted, so generally the rail A110 and the rail B112 must have a step at the intersection. It is occurring. However, when one of the two rollers 84 of the tracking block 65 is on the step, the other rail A11
0, and when the other is on the step, the other is on the rail A110, so there is no shock or impact during transfer.
There are no steps.

As described above, according to this embodiment, even if there is a step at the intersection of the rails used as guide members during the transfer of both the tracking block 65 and the arm housing block, the tracking block 6
By providing two rollers 84 on the block 5 and guiding it on the rail 110, both blocks can run smoothly without any difference in level.

In the embodiment, the tracking block is provided with two rollers to guide it on the rail, but the arm housing block is provided with two rollers so that the rail A110 is one continuous rail, and the rail B112 is made into two. It may also be divided. In that case, one roller of the tracking block is sufficient.

Effects of the Invention As described above, according to the present invention, the releasing means for releasing the engagement between the opening and the lid, the latching means for latching the lid, and the reproducing means for reproducing the signal on the disk. A regeneration means that travels within the device, an openable and closable clamping means that clamps the disc, a transporting means that reciprocates the latching means and the clamping means, and a transporting means provided on the travel path of the transporting means to guide the traveling of the transporting means. a first rail for guiding the movement of the regeneration means; and a second rail provided on the travel path of the regeneration means for guiding the movement of the regeneration means; The means is configured to transfer on the same plane as the first rail without contacting the second rail, and the reproduction means is configured to transfer on the same plane as the second rail without contacting the first rail. It is composed of

Specifically, for example, this transfer means has a first rotating body and a second rotating body that guide a first rail, and the first rotating body is placed at the intersection of the first rail and the second rail. If there is a body, the second rotating body comes into contact with the first rail to prevent the first rotating body and the second rail from coming into contact with each other. Even if there is a step at the intersection of the rails used as guide members during the travel of both the transfer means, which is the king block, and the regeneration means, which is the arm housing block, smooth running can be achieved without any step while both blocks are running. This makes it possible to easily adjust the height and parallelism required for mass production of regeneration means.

[Brief explanation of drawings]

FIGS. 1A and 1B are an overall perspective view and a partial sectional view of a recording disk reproducing apparatus according to an embodiment of the present invention, and FIGS. 2A, B, C, and D are plan views of a tracking block in the same apparatus. Fig. 3 is a plan view of the entire device, Fig. 4 is a perspective view and partial sectional view of the entire conventional recording disk reproducing device, and Figs. 5 A, B, C, and D.
is a plan view of the tracking block in a conventional device, FIG. 6 is a plan view of the entire device showing the state in which the disk is pulled out from the case, and FIG. 7 is the same plan view while the disk is being pulled out (during recovery) It shows. 61... Chassis, 64... Opener block, 65... Chucking block, 66... Transfer block, 70... Arm housing, 80...
...Movable base, 84...Roller, 110...Rail A, 112...Rail B.

Claims (1)

[Scope of Claims] 1. A recording disc playback device that uses a disc case that has an opening at one end for storing a disc on which a signal is recorded, and a lid that removably engages with the opening. A release means for releasing the engagement between the opening and the lid, a latching means for latching the lid, and a reproducing device that runs within the reproducing device for reproducing the signal on the disk. means, an openable and closable clamping means for clamping the disc, a transporting means for reciprocating the latching means and the clamping means, and a transporting means provided on a traveling path of the transporting means to guide the traveling of the transporting means. 1st for
and a second rail provided on the travel path of the regeneration means to guide the travel of the regeneration means, and the transfer is performed at the intersection of the first rail and the second rail. The means transfers on the same plane as the first rail without contacting the second rail, and the regenerating means is on the same plane as the second rail without contacting the first rail. A recording disc playback device configured to transport. 2. The transfer means has a first rotating body and a second rotating body that guide the first rail, and when the first rotating body is located at the intersection of the first rail and the second rail, 2. The recording disk reproducing apparatus according to claim 1, wherein the second rotating body contacts the first rail to prevent the first rotating body and the second rail from coming into contact with each other.