JP3449915B2 - Disk playing 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 disc playing device such as a disc changer in which a plurality of discs are loaded, and an arbitrary disc is selected from the loaded plurality of discs for recording and reproduction. .

[0002]

2. Description of the Related Art In a conventional disc changer,
The disk holding means is configured to store a plurality of sub-tray in a stocker having a plurality of shelves, and the vertical drive means for selecting an arbitrary disk position is the stocker, the plurality of sub-trays and the plurality of disks as a whole. Is configured to be driven in the vertical direction.

However, in the above-mentioned conventional disc changer, the stocker having a plurality of shelves, the plurality of sub-tray and the plurality of sub-trays are provided when the vertical drive means for driving the disk holding means to select an arbitrary disk position is driven. The disk holding means for driving the entire disk is heavy, consumes a large amount of energy in the vertical drive motor, causes a drop in the finished product, causes problems in vibration, and increases the cost due to the large number of parts, etc. There was a problem.

Therefore, recently, for example, FIGS.
The pair of spindles 2 is held by the holding claws 200 as shown in FIG.
01 and 202, a disk holding means 204 for releasably supporting a plurality of spacers 203, and a plurality of disks 217 and 21 held by the plurality of spacers 203.
8 to drive the spacer 203 in the vertical direction to select an arbitrary position, and the holding claw 200 to drive the plurality of spacers 203 into the upper spindle 2.
01 and the spindle drive means 206 to be engaged and disengaged from the disc 01, and the optional spacer 203 held by the holding claw 200 to support the sub tray 219 from the disc 2 to the recording / reproducing position X.
A disc changer including a horizontal transport unit 207 that transports 17, 218 and a disc clamp unit 208 that clamps the discs 217, 218 at the recording / reproducing position X is considered.

According to the disc changer having such a structure, a plurality of spacers 203 and a plurality of discs 21 mounted on both spindles 201 and 202 are provided.
7, 218 are driven in the vertical direction to move the discs 217, 218 from the upper and lower spindles 201, 202 to a recording / reproducing position X, a take-out position Z, and a storage position Y on the second spindles 201, 202 again. It is possible to change, and it is possible to record and reproduce by selecting arbitrary disks 217 and 218. This eliminates the need for a stocker having a plurality of shelves, a plurality of sub-trays, and the like, resulting in a disc changer that is lightweight and inexpensive, and has excellent storability and operability.

[0006]

However, in the above-mentioned disc changer, when the tray 215 is opened for disc exchange, the opening 216 on the front face of the apparatus is large, so that the disc 2 having a small diameter of, for example, 8 cm.
There was a problem that 17 was accidentally dropped into the device.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a disc playing device in which a disc is not accidentally dropped into the device when the tray is opened. .

[0008]

In order to solve the above-mentioned problems, in the disc playing device of the present invention, the concealing means has a lever that rotates in response to the movement on the tray side, and the shape of this lever is It has a pair of protrusions provided at positions substantially symmetrical with respect to the center of the disc placed on the tray and at intervals smaller than the outer diameter of the small-diameter disc. It has a concavo-convex surface formed in a sawtooth shape.

According to the present invention, with the above-described structure, even when the disc is accidentally dropped into the main body of the apparatus through the opening formed by the opening of the tray, the end of the disc is provided in the left and right two positions. Since it is caught on the uneven surface of the disk, it is possible to prevent the disk from falling into the apparatus body.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a device main body and a first disc playable inside the device main body.
And a tray that is movable from the device body so as to take a second position where the disc can be taken out and exchanged, and a tray that is rotatably supported by the device body and that the tray protrudes to the second position. A disc playing device having a concealing means capable of concealing at least a part of the generated opening, wherein the concealing means has a lever that rotates in response to movement on the tray side. The shape has a pair of convex portions provided at positions substantially symmetrical with respect to the center of the disc placed on the tray and at intervals smaller than the outer diameter of the small diameter disc, and the convex portions face each other. The disk playing device is characterized in that each end has a concave and convex surface formed in a sawtooth shape.

According to the present invention, when the tray is moved so as to project from the first position to the second position, the lever side can be raised and rotated to the automatic point by the tray side cam. As a result, at least a part of the opening generated by the protrusion of the tray to the second position can be covered by the convex portion integrated with both levers, and therefore, the disc can be manually removed or replaced with respect to the tray. Even if you accidentally drop the disc into the main body of the device through the opening, the space between the serrated irregular surfaces formed on the pair of protrusions that are narrower than the outer diameter of the small-diameter disc. The end portion of the disk is hooked on the disk, which prevents the disk from falling into the main body of the apparatus. In that case, serrated
In the state that it is caught between the uneven surfaces of the
As a result, the end of the small-diameter disk rises and the convex
You can prevent it from overrunning and firmly keep it caught
it can.

The invention described in claim 2 is the disc playing device according to claim 1, wherein the rotation of the lever is driven by a cam provided on the tray side when the tray is opened / closed. It is a thing.

With this configuration, even when the disc is pushed in the inner direction of the device body while being in contact with the lever, the lever and the like do not rotate and fall down, and the disc is securely dropped into the device body. Can be prevented.

A disk changer, which is an example of an embodiment of the present invention, will be described below with reference to the drawings. In FIG. 1, 1 is a large diameter disc having a diameter of 12 cm, and 2 is a small diameter disc having a diameter of 8 cm. The front panel 10 is attached to the bottom plate 11 and the like. Key 12, open / close key 1
3, a play key 14, a stop key 15 and the like are provided. Reference numeral 16 is an outer case of the disk playing device 19 of the present invention, and 17 is an insulator provided on the bottom plate 11 side. A tray base 22 is projected from the opening 10a of the front panel 10. 23 is a tray base 22
With a tray that can be slid in the arrow arrow direction,
Exchanged disks 1 and 2 are supplied on the tray 23.

2, FIG. 4, FIG. 28, and FIG. 34, the apparatus main body 20 is composed of a bottom plate 20A, left and right side plates 20B, a rear plate 20C, and the like. A disk storage position A is formed on the rear plate 20C side in the device body 20,
Then, a disc playing position B is formed on the front side. Here, the disc 1, which is stored in the disc storage position A,
The distance L between the center of 2 and the center of the discs 1 and 2 played at the disc playing position B is larger than 10 cm (radius of large-diameter disc 1 + radius of small-diameter disc 2) and 1
It is set to be smaller than 2 cm (the diameter of the large-diameter disk 1).

According to this structure, the large-diameter disc 1 stored and the large-diameter disc 1 being played can be placed at a position where the large-diameter disc 1 stored and the large-diameter disc 1 being played are overlapped with each other in a plane. Therefore, the device can be downsized. Further, the accommodated large-diameter disc 1 and the playing small-diameter disc 2 or the accommodated small-diameter disc 2 and the playing large-diameter disc 1 can be positioned so as not to overlap in a plane.

Next, the structure of the disk carrying means 21 will be described with reference to FIGS. That is, the device body 2
Disk transport means 2 for transporting disks 1 and 2 between disk storage position A and disk playing position B within 0.
1 is provided. The disc carrying means 21 is guided by the side plate 20B of the apparatus body 20 and is slidable in the arrow direction (front-back direction), and a tray base 22 is guided by the tray base 22 and is slidable in the arrow direction. 23 and a carrier 27 which is supported and guided by the tray base 22 side and is slidable in the arrow arrow direction. Then, the tray base 22 is projected from the opening 10a formed in the front panel 10 by sliding in the arrow A direction (forward direction).

A 12 cm disc placing portion 24 and an 8 cm disc placing portion 25 are concentrically formed on the upper surface side of the tray 23. At this time, the height of the spacer (discussed later) of the disc holding means is lowered to form the thin disc playing device 19, so that the 12 cm disc holder 2 is provided.
No. 4 is formed at a position slightly higher than the 8 cm disc rest 25.

The carrier 27 is the tray base 22.
The carrier 27 has a strip shape and is provided with a rack 28 on the outer side surface.
A vertical locking hole 29 is formed at a predetermined position of the carrier 27, and a locking pin 26 from the tray 23 is locked in the locking hole 29.

An example of the disk carrying means 21 is constituted by the above 22 to 29. Then, according to the disk transport means 21, the carrier 27 is moved forward and backward through the rack 28 by the forward and reverse drive of the horizontal drive means (described later), so that the tray 23 integrated with the carrier 27 is formed. The tray base 22 is supported and guided to move integrally. As a result, in the apparatus body 20, the discs 1 and 2 are loaded into the disc storage position A and the disc playing position B.
Can be transferred between.

Next, the structure of the disc holding means 30 will be described with reference to FIGS. 2, 5 to 7, 20, 29 and 34. The disk holding means 3 is provided at the disk storage position A.
0 is provided, and the disc holding means 30 has an upper spindle 31 and a lower spindle 41 which are a pair of upper and lower spindles for holding a plurality of spacers 38 in a disengageable manner. By vertically driving 38, the disks 1 and 2 are transferred to the disk conveying means 2
It can be handed over to and from 1.

That is, reference numeral 32 denotes a spindle mounting plate, which is provided between the upper surfaces of the rear half of the side plate 20B, and the upper spindle 31 is provided at the center lower part thereof.
Reference numeral 42 denotes an elevating base (spindle base) opposed to the spindle mounting plate 32 from below, which is configured to be vertically driven by an elevating means (described later). A spindle 41 is provided.

The upper spindle 31 has a flange 31b at the upper end of the upper spindle body 31a, and an engaging piece 31c formed on the flange 31b has a spindle mounting plate 3 formed therein.
It engages with the engagement hole 32a formed in 2. A disc retainer 33 is fitted on the outer peripheral portion of the upper spindle body 31a, and the groove 31 in the vertical direction of the upper spindle body 31a.
It can be moved along e. This disc retainer 33
Disk pressing spring 3 provided between the flange 31b and
4 is urged downward.

A holding claw 35 is housed inside the upper spindle body 31a. The holding claw 35 is a claw portion 35 a for holding the spacer 38 on the upper spindle 31.
And a core portion 35b with which the convex portion 44c on the lower spindle 41 side abuts, and an upper stopper 35c, which are integrally molded of synthetic resin.

The holding claw 35 is the spindle mounting plate 32.
Although it is urged downward by a pawl opening spring 36 provided between and, it is prevented from popping out by the pushing portion 31d. The pushing portion 31d is provided on the upper spindle body 31a.
And a tip of a push-down piece 48a of a separation preventing claw 48, which will be described later, abuts.

Since the base portion of the claw portion 35a is made of a thin plate, it is configured to bend inward and outward. A tip portion 35d of the claw portion 35a has a hook shape, and a portion in contact with the upper spindle body 31a is inclined inward. The core 35b of the holding claw 35 is the tip 3 of the claw 35a.
Three vertical grooves 35e are formed at a position where the tip portion 35d abuts so that the 5d can be sufficiently retracted into the upper spindle body 31a.

The lower spindle 41 is composed of a lower spindle body 45 composed of an outer cylinder 43 and an inner cylinder 44, a separation preventing claw 48 fitted in the inner cylinder 44, and the like. The inner cylinder 44 is fitted into a lower shaft 42a formed on the elevating base 42, and a locking piece 44a at the lower end is engaged with and fixed to the elevating base 42. The outer cylinder 43 has a flange 43a at the lower end,
A ring-shaped gear 43b is provided on the bottom surface of the flange 43a. The ring-shaped gear 43b meshes with a second intermediate gear 157 of a gear train (described later), and the outer cylinder 4
Rotate 3.

A male screw 43c is formed on the outer peripheral portion of the outer cylinder 43, and a screw portion 46 for moving the spacer 38 up and down is screwed into the male screw 43c. The screw part 46 has an outer cylinder 43.
A rotation stopper 47 is attached so as not to rotate with the rotation of the. The rotation stopper 47 has one end pivotally supported by the threaded portion 46 and the other end pivotally supported by the elevating base 42.

The disengagement preventing claw 48 includes three claw portions 48b opened to the outside, three push-down pieces 48a formed between the claw portions 48b and the claw portion 48b, and a lower stopper 48d protruding downward. It consists of and.

On the upper part of the inner cylinder 44, three claw holes 44b are formed so that the tips of the claw parts 48b can be withdrawn (see FIG. 7). Small holes are formed between these claw holes 44b so that the tips of the push-down pieces 48a project. The separation preventing claw 48 is pushed upward by the compression spring 49 in the lower shaft 42a, the tip end 48e of the claw 48b projects from the claw hole 44b, and the push-down piece 48a projects from the small hole. Further, a convex portion 44c that pushes up the holding claw 35 is formed at the center of the upper portion of the inner cylinder 44. On the lower side surface of the convex portion 44c, the claw portion 48b is provided with the claw hole 4
It is inclined so that it is easy to go in and out of 4b.

It should be noted that outward pins 50 and 51 are provided on both left and right sides of the lifting base 42, in which case one (right) pin 50 is one and the other (left) pin 51 is one. Two are provided at the front and back. Reference numeral 52 denotes a vertical feed detection sensor, which is configured to detect the slit 43d formed on the outer periphery of the flange 43a and count the number of rotations.

An example of the disk holding means 30 is constituted by the above 31 to 52. Then, the disc holding means 30 is operated as follows. That is, FIG. 5 shows a state in which five disks 1 and 2 are stored in the lower spindle 41 and the upper spindle 31 and the lower spindle 41 are separated from each other. When the raising / lowering base 42 is raised (in the direction of arrow C) by the raising / lowering means (described later), the raising / lowering base 4
The lower spindle 41 attached to 2 also rises.

By raising the lower spindle 41,
The three holding claws 35 arranged at an angle of ° and the separation preventing claw 48 are fitted between each other, and the convex portion 44c abuts the core portion 35b of the holding claw 35. Furthermore, the convex portion 44
When c holds up the holding claw 35 while resisting the force of the claw opening spring 36, the tip end portion 35d of the holding claw 35 enters into the upper spindle body 31a. Therefore, the spacer 38
It is moved to the upper spindle 31 side without being hindered by the tip of the claw portion 35a.

At the same time, the push-down piece 48 of the detachment prevention claw 48
The a hits the pushing portion 31d of the upper spindle 31.
When the pushing portion 31d pushes back the separation preventing claw 48 downward while resisting the force of the compression spring 49, the claw portion 4 of the separation preventing claw 48 is pressed.
The tip portion 48e of 8b retracts into the inner cylinder 44. Therefore, the spacer 38 can move from the lower spindle 41 to the upper spindle 31 side (see FIG. 6).

In the state as described above, the rotational force of the second intermediate gear 157 of the gear train is transmitted to the ring gear 43b to rotate the outer cylinder 43. By the rotation of the outer cylinder 43,
The screw portion 46 rises along the lower spindle 41 and pushes up the spacer 38. The screw portion 46 moves the disks 1 and 2 from the lower spindle 41 to the upper spindle 31, and stops when the necessary disks 1 and 2 are located at the lower end of the upper spindle 31.

The disks 1, 2 of the upper spindle 31
To move the lower spindle 41 to the lower spindle 41, the outer cylinder 43 may be reversely rotated and the screw portion 46 may be lowered. The amount of movement is controlled by the vertical feed detection sensor 52 counting the number of rotations of the flange 43a integrated with the lower spindle 41, and stopping based on the counted number.

Then, the raising and lowering base 42 is lowered by the raising and lowering means (in the direction of arrow D), and once the upper spindle 3
1 and the lower spindle 41 are separated from each other, and then the upper spindle 3
The tray 23 is moved between the 1 and the lower spindle 41.

When the upper spindle 31 and the lower spindle 41 are separated from each other, the holding claw 35 is pushed downward by the claw opening spring 36, and the tip end portion 35d of the claw portion 35a jumps out from the outer peripheral wall of the upper spindle 31 and moves to the upper spindle 31. The spacer 38 and the discs 1 and 2 thus prepared are held. At the same time, the separation preventing claw 48 is pushed upward by the compression spring 49, and the claw portion 35a is prevented from protruding from the claw hole 44b to prevent the spacer 38 fitted to the lower spindle 41 from separating from the lower spindle 41.

With the tray 23 moved between the upper spindle 31 and the lower spindle 41, the lower spindle 41 is raised again by the elevating means. After the lower spindle 41 abuts on the upper spindle 31 and the holding claw 35 is released from the locked state, the spacer 38 is vertically driven and driven downward by one slit (one rotation of the lower spindle 41), and then again. When the upper spindle 31 and the lower spindle 41 are separated from each other, the required disks 1 and 2 are placed on the tray 23 and are carried to the disk playing position B or the outside.

Next, the structure of the disc playing means 60 will be described with reference to FIGS. 2, 4, 8, 19, and 28 to 34. At the disk playing position B, the device body 20
The disk playing means 60 is provided on the side so as to be able to move up and down. The disk playing means 60 has an elevating table 61 that can be moved up and down in the direction of the arrow honey, and a recording / reproducing device 62 for the disks 1 and 2 is provided on the elevating table 61 so as to fit therein. Buffer springs 63 for urging the recording / reproducing device 62 upward are provided at a plurality of positions between the elevating table 61 and the recording / reproducing device 62. The recording / reproducing device 6 is provided on the upper cover 67 provided between the upper surfaces in the front half of the side plate 20B.
Two disk clampers 64 are supported with a constant gap. It should be noted that one outward pin 65, 66 is provided on each of the left and right sides of the lift 61.

An example of the disc playing means 60 is constituted by the above 61 to 67. The elevating table 61 of the disc playing means 60 is raised in the arrow C direction by the elevating means (described later) to separate the discs 1 and 2 from the upper surface of the tray 23, and then the recording / reproducing device 62 and the disc clamper 64 are separated. It is configured so that recording and reproduction can be performed by clamping between them.

Next, the structure of the elevating means 70 for elevating the lower spindle 41 and elevating the disk playing means 60 will be described with reference to FIGS. 4, 8, 16, 22, 22, 29 and 34.

That is, a pair of left and right plates 71, 81 supported in the side plate 20B of the apparatus body 20 and slidable in the arrow arrow direction are provided in the apparatus body 20. Then, from the end portions of the plates 71, 81 near the rear plate 20C, projecting portions 72, 82 in opposite directions are integrally provided, and these projecting portions 72, 82 have elongated holes in opposite directions. 73 and 83 are formed.

The one (right) plate 71 is an example of a single component, and the cam groove 7 with which the pin 50 provided on one of the elevating bases 42 of the lower spindle 41 engages.
4 at the rear, and at the front has an upper rack 75 and a lower rack 76 facing inward. The other (left) plate 81 has a pair of cam grooves 84 with which a pair of pins 51 provided on the other side of the elevating base 42 engage.
Pin 66 provided on the other side of the disk playing means 60
And a cam groove 85 which engages with each other. A pin 65 provided on one side of the disc playing means 60 is engaged with a cam groove 96 on the side of a cam gear (described later).

Here, the cam groove 74 of one plate 71
The front upper cam portion 74 from the front side to the rear side thereof.
a, a V-shaped cam portion 74b, an intermediate upper cam portion 74c, and a rear upper cam portion 74d are formed by continuous grooves (FIG. 9, FIG.
(See FIG. 16). The intermediate upper cam portion 74c and the front upper cam portion 74a are positioned higher than the rear upper cam portion 74d.

The rear and middle cam grooves 84 of the other plate 81 extend from the front side to the rear side of the front upper cam portion 84a, intermediate upper cam portion 84b, and V-shaped cam portion 8 respectively.
4c, the rear upper cam portion 84d is formed by a continuous groove (see FIGS. 20 and 21). The front upper cam portion 84a
Are lower than the intermediate upper cam portion 84b and the rear upper cam portion 84d.

Further, the cam groove 85 on the front portion of the other plate 81 is formed by a continuous groove of the front lower cam portion 85a, the intermediate upper cam portion 85b, and the rear lower cam portion 85c from the front portion side to the rear portion side. (See FIGS. 20 and 29).
The cam groove 96 on the cam gear side is formed in a spiral shape (see FIG. 19).

A shaft 86 is erected from the bottom plate 20A at a position near the rear plate 20C in the apparatus main body 20.
6 is provided with a connecting lever 87 that is rotatably supported via its intermediate portion. Pins 88 and 89 are provided upright on both ends of the connecting lever 87, and these pins 88 and 89 are engaged with the elongated holes 73 and 83. As a result, the connecting lever 87 rotatably supported by the apparatus main body 20
The pair of left and right plates 71 and 81 are connected to each other, so that the plates 71 and 81 slide in opposite directions.

An intermediate gear 90 meshing with the lower rack 76 is rotatably provided in the main body 20 of the apparatus via a shaft 91 standing from the bottom plate 20A side, and a cam gear meshing with the intermediate gear 90 is provided. 92 is rotatably provided via a shaft 93. A cam cylinder 94 is integrated with the lower surface of the cam gear 92. On the outer circumference of the cam cylinder 94, the cam groove 96 with which the pin 65 provided on one side of the disc playing means 60 is engaged is formed.

An example of the elevating means 70 is constituted by the above 71 to 96. Then, according to the lifting means 70,
The gear rotational force on the horizontal drive means (described later) is transmitted to the one plate 71 through the upper rack 75, so that the one plate 71 slides in the arrow arrow direction and the connecting lever. The other plate 81 is slid in the opposite direction via 87. At the same time, the intermediate gear 90 meshing with the lower rack 76 is rotated, and the cam cylinder 94 is rotated via the cam gear 92.

As described above, the left and right plates 71 and 81 are slid in the opposite directions, and the cam gear 92 is rotated in response to the movement of the one plate 71, so that the cam grooves 74 and 84 are inserted. The elevating base 42 of the lower spindle 41 is moved up and down in the arrow direction, and the cam groove 9
The disk playing means 60 is moved through the arrow keys 6 and 85.
It will be raised and lowered in two directions. The cam grooves 74, 8
The formation positions of 4, 96, and 85 and the above-described cam shape are set so that the timing described later is appropriately performed with the movement of the plates 71 and 81.

That is, FIG. 16A, FIG. 21 and FIG.
In the play shown in FIG. 5, one pin 50 of the elevating base 42 engages with the intermediate upper cam portion 74c of the cam groove 74, and the other pin 51 of the elevating base 42 engages with the intermediate upper cam portion 8 of the cam groove 84.
4b and engages with the other pin 66 of the disc playing means 60.
Is set so as to engage with the intermediate upper cam portion 85b of the cam groove 85, and one pin 65 of the disc playing means 60 engages with the cam groove 96.

Further, when the lower spindle is lowered as shown in FIG. 30 and the tray is in front of the tray, one pin 50 of the lift base 42 is used.
Engages with the V-shaped cam portion 74b of the cam groove 74, and the other pin 51 of the lifting base 42 has the V-shaped cam portion 84 of the cam groove 84.
c so that the other pin 66 of the disc playing means 60 engages with the rear lower cam portion 85c of the cam groove 85, and one pin 65 of the disc playing means 60 engages with the cam groove 96. Has been done.

When the lower spindle is lowered as shown in FIG. 31 and the tray is rear, one pin 50 of the elevating base 42 is engaged with the V-shaped cam portion 74b of the cam groove 74, and the elevating base 42 is moved.
The other pin 51 of the disk engaging means 60 is engaged with the V-shaped cam portion 84c of the cam groove 84, and the other pin 66 of the disk playing means 60 is engaged with the rear lower cam portion 85c of the cam groove 85, and the disk playing means 60 of the disk playing means 60 is engaged. One pin 65 is set to engage with the cam groove 96.

Further, at the time of disc stock shown in FIGS. 16C and 32, one pin 50 of the elevating base 42 engages with the front upper cam portion 74a of the cam groove 74, and the other pin 50 of the elevating base 42. The pin 51 engages with the rear upper cam portion 84d of the cam groove 84, the other pin 66 of the disc playing means 60 engages with the rear lower cam portion 85c of the cam groove 85, and one pin 65 of the disc playing means 60. Are set to engage with the cam groove 96.

In the disc change state shown in FIGS. 16B and 33, one pin 50 of the elevating base 42 is engaged with the intermediate upper cam portion 74c of the cam groove 74, and the elevating base 4 is moved.
The other pin 51 of 2 is the intermediate upper cam portion 84 of the cam groove 84.
b so that the other pin 66 of the disc playing means 60 engages with the intermediate upper cam portion 85b of the cam groove 85, and one pin 65 of the disc playing means 60 engages with the cam groove 96. Has been done.

As described above, the elevating means 70 is constructed so that the movement of one plate 71, which is a single component, simultaneously acts on the elevating of the lower spindle 41 and the elevating of the disk playing means 60. There is. Therefore, by driving the lower spindle 41 of the disc holding means 30 up and down and the disc playing means 60 up and down by the same plate 71, it is possible to easily match the timings of raising and lowering both of them, and with the playing disc being raised and lowered. Since the discs can be raised and lowered without changing the gap of the holding discs in the storage portion, it is possible to prevent the discs from contacting each other during the raising and lowering.

Further, since the lower spindle 41 of the disc holding means 30 and the disc playing means 60 are moved up and down by the plates 71 and 81 having the cam grooves 74, 84 and 85, the lower spindle 41 is constituted. And the disc playing means 60 can be moved up and down with a simple structure without timing deviation.

Furthermore, a pair of left and right plates 71, 81 and an intermediate gear 90 are connected to a part of the common lifting means 70 of the lower spindle 41 and the disk playing means 60, and rotate in synchronization with the movement of the plate 71. Due to the configuration using the cam gear 92, the pitches of the pins 65 and 66 provided on the left and right of the disk playing means 60 in the width direction and the widths of the pins 50 and 51 provided on the left and right of the elevating base 42 of the lower spindle 41 in the width direction. Even when the pitch is different, it is possible to move up and down without changing the timing of lifting up and down on both sides with a simple structure.

Next, the structure of the horizontal driving means 100 capable of driving the disk conveying means 21 and the elevating means 70 will be described.
This will be described with reference to FIGS. 9 to 15, 17, and 34. That is, the horizontal drive means 100 has a speed reduction mechanism (described later).
Has a drive gear 101 connected to a drive source through the drive gear 101. The drive gear 101 is a shaft 1 that is erected from the bottom plate 20A side.
It is rotatably attached to 02. A drive rack 103 supported by the carrier 27 side of the disk transfer means 21 and the tray base 22 and relatively slidable in the arrow arrow direction is provided, and the rack 104 of the drive rack 103 is provided on the inner side surface. Formed, said drive gear 101
Is meshing with.

A speed increasing gear 106 is rotatably provided at a predetermined position of the drive rack 103 via a shaft 105. The speed increasing gear 106 is a two-stage gear composed of two large and small gears 106A and 106B having the same number of teeth and different modules, and the small gear 106B is provided on one plate 71 provided on the elevating means 70 side. The large gear 106A meshes with the rack 75, and the large gear 106A meshes with the rack 28 of the carrier 27 provided on the disk conveying means 21 side.

On the front side of the tray base 22, a stopper member 110 for restricting the sliding of the carrier 27 and the plate 71 in the arrow A direction, and a carrier lock for preventing the carrier 27 from sliding in the arrow B direction. And a tool 112 is provided.

That is, the stopper 110 is an L-shaped lever type and is rotatably provided on the tray base 22 side via a pin 111, and one arm thereof is provided at the front end of the carrier 27. The formed contact portion 27a is formed on the receiving portion 110a with which the contact portion 27a can contact. Further, the other arm portion is formed with a receiving portion 110b capable of abutting the tip abutting portion 71d formed at the tip of the plate 71, and a locking portion 110c engageable with the carrier 27 side. ing.

The locking portion 110c is formed on the carrier 27.
When the contact portion 27a of the carrier contacts the receiving portion 110a and the stopper 110 is rotated around the pin 111 by a predetermined amount, the engaging recess 27b formed on the outer surface of the carrier 27 is engaged. It is configured to be.

The carrier lock tool 112 is also an L-shaped lever type and is rotatably provided on the tray base 22 side through a pin 113, and one arm portion thereof is
It is formed on a stopper portion 112a that can be engaged with a stopper recess 27c formed on the inner surface of the carrier 27. On the other arm, a rotation receiving portion 112b for unlocking is formed.

A common urging spring 114 for urging the stopper 110 and the carrier lock 112 to rotate is provided across the stopper 110 and the carrier lock 112. Here, the urging spring 114 is arranged to urge the stopper 110 in the releasing direction and the carrier lock 112 in the engaging direction.

An operation tool 115 for rotating the carrier lock tool 112 in the unlocking direction is provided on the front portion of the apparatus main body 20. The operation tool 115 is of a lever type and is rotatably provided on the apparatus body 20 side through a pin 116.

The first arm portion of the operation tool 115 is formed with a receiving portion 115a with which the front contact portion 71a formed on the one plate 71 side can come into contact. Further, the second arm portion is formed with a rotation operation portion 115b capable of contacting the rotation receiving portion 112b for unlocking the carrier lock 112 from the rear side. A cam pin 115c is formed on the third arm portion so as to be engageable with and disengageable from the lock cam groove 22a provided on the lower surface side of the tray base 22 in the lateral direction. The lock cam groove 22a
Is curved so as to follow the movement trajectory of the cam pin 115c.

A spring 117 for urging the operation tool 115 to rotate is provided, and the urging direction at that time is the receiving portion 1
15a is set to shift to the rear side. An intermediate locking device for preventing the plate 71, which has been most moved in the arrow A direction, from moving in the arrow B direction in the middle portion of the apparatus body 20 and for restricting the movement limit of the tray base 22 in the arrow B direction. 120 is provided. The intermediate lock 120 is of a lever type, and its central position is rotatably provided on the apparatus body 20 side via a pin 121.

At the front end of the intermediate lock member 120, there is formed a receiving portion 120a with which the intermediate contact portion 71b provided at the intermediate portion of the plate 71 can come into contact. A drive cam portion 22b provided at a position near the rear portion of the tray base 22 is provided at a position near the rear portion of the intermediate lock 120.
A passive cam portion 120b (see FIG. 3) that can freely come into contact is formed. Further, at the rear end of the intermediate lock tool 120, a stopper portion 120c is formed, which is in contact with a stopper portion 22c (see FIG. 3) provided at a position near the rear portion of the tray base 22. The intermediate lock 120 is urged by the spring 122 so that the receiving portion 120a is pushed into the movement trajectory of the rear contact portion 71b.

The rear portion of the apparatus main body 20 temporarily receives one plate 71 moved in the arrow B direction, and locks the carrier 27 when the one plate 71 further moves in the arrow B direction further. 1
23 is provided. The rear lock member 123 is an L-shaped lever type, and the central position thereof is the device body 20.
It is rotatably provided on the side through a pin 124.

At the front end of the forward arm of the rear lock member 123, there is formed a receiving portion 123a with which the rear end contact portion 71c provided at the rear end of the plate 71 can come into contact. A contact portion 123b is formed on the lateral arm portion of the rear lock tool 123 so that the rear end contact portion 27d provided at the rear end of the carrier 27 can contact. Moreover, the receiving part 1
At a portion 23a, a locking portion 123c is formed which can be engaged and disengaged from the outside with respect to a locking concave portion 27e which is provided at a position near the rear portion of the carrier 27 and which is open to the outside. In the rear lock tool 123, the receiving portion 123a has a rear end contact portion 71c.
Is urged by the spring 125 so as to be thrust into the movement locus.

The above 101 to 125 constitute one example of the horizontal driving means 100 capable of driving the disk conveying means 21 and the elevating means 70. According to the horizontal drive unit 100, the drive gear 101 is rotationally driven in the forward and reverse directions by the drive source via the reduction mechanism, so that the drive rack 10 is driven.
Slide 3 in the arrow arrow direction. And drive rack 1
The sliding of 03 drives the disk conveying means 21 and the elevating means 70 via the speed increasing gear 106 and the like.

That is, for example, at the time of play shown in FIG. 11A, the carrier 27 is moved to the front end limit, and its abutting portion 27a abuts on the receiving portion 110a, so that the stopper 110 is biased. The locking portion 110c is rotated against the spring 114, so that the locking portion 110c is engaged with the locking recess 27b of the carrier 27. As a result, the moving position of the carrier 27 to the front end is maintained. In addition, the carrier lock tool 112 has a rotation receiving portion 112 b whose operation tool 115.
By contacting the rotation operating portion 115b of the
It is rotated against 14, and the stopper portion 112a is separated from the stopper recess 27c.

The intermediate locking device 120 is rotated against the spring 122 by the driving cam portion 22b of the tray base 22 acting on the passive cam portion 120b, and the receiving portion 120a is brought into contact with the rear contact portion. It is located outside the movement locus of 71b. Furthermore, the rear lock 123 is a spring 125.
The receiving portion 123a is pushed into the movement locus of the rear end contact portion 71c by being rotated by the urging force of. Further, the elevating means 70 is lifted by sliding one plate 71 to the front end side, thereby lifting the lower spindle 41 and the recording / reproducing device 62.

When the discs 1 and 2 that have finished playing are returned to the disc storage position A from such a play, first, the drive gear 101 is rotated in the direction of arrow E in FIG. 11B. As a result, the drive rack 103 slides in the direction of arrow B, but at this time, since the carrier 27 is prevented from moving by the stopper 110, the speed increasing gear 106 pivotally supported by the drive rack 103 is The large gear 106A meshes with the rack 28 of the carrier 27 and rotates.

As a result, the small gear 106 of the speed increasing gear 106
By the rotation of B, one plate 71 slides in the arrow B direction via the upper rack 75, and the sliding is performed until the rear end contact portion 71c abuts on the receiving portion 123a.

As the one plate 71 slides in the direction of arrow B, the elevating means 70 is lowered, whereby the lower spindle 41 and the recording / reproducing apparatus 6 are operated.
Lower 2 At that time, the speed-up gear 106 is in a deceleration transmission state, so that the descent is performed gently and stably. As described above, the lower spindle is lowered as shown in FIG.

When the sliding movement of the plate 71 is stopped by the rear end abutting portion 71c contacting the receiving portion 123a, the driving rack 103 is slid in the direction of arrow B so that the driving rack 103 is axially moved. Acceleration gear 106 supported
Means that the small gear 106B meshes with the fixed upper rack 75 and is rotated. As a result, as shown in FIG. 12A, the large gear 106A of the speed increasing gear 106 is
Rotation causes the carrier 27 to slide in the arrow B direction via the rack 28, and at that time, the stopper 110 is rotated by the urging spring 114, so that the locking portion 110c locks the carrier 27. It is separated from the recess 27b.

Such sliding of the carrier 27 is performed until the rear end contact portion 27d contacts the contact portion 123b.
By this abutment, the lock member 123 is rotated against the spring 125, and the locking portion 123c is engaged with the locking recess 27e from the outside, so that the carrier 27 is moved to the rear end limit. The moving position is locked. Then, the slide of the carrier 27 causes the tray 23 to slide in the arrow B direction with respect to the tray base 22, so that the lower spindle is lowered as shown in FIG. It should be noted that the locking rotation of the locking tool 123 causes the receiving portion 123a to escape inward with respect to the rear end contact portion 71c of the plate 71.

As a result, the plate 71 can be slid in the arrow B direction, and therefore one plate 71 can be slid in the arrow B direction to raise and lower the elevating means 70. The lower spindle 41 and the recording / reproducing device 62 are raised, and the stock time shown in FIG.

In order to operate from the above stock time to the change time shown in FIG. 13, first, the drive gear 101 is rotated in the opposite direction to the above, that is, in the direction of the arrow. As a result, the drive rack 103 is slid in the direction of arrow A, but at this time, since the carrier 27 is prevented from moving by the rear lock tool 123, the speed increasing gear 106 pivotally supported by the drive rack 103 is The large gear 106A meshes with the fixed rack 28 of the carrier 27 and is rotated.

As a result, the small gear 106 of the speed increasing gear 106
By the rotation of B, the one plate 71 is slid in the arrow A direction via the upper rack 75. As a result, the elevating means 70 is lowered, and the lower spindle 41 and the recording / reproducing device 62 are lowered. In this manner, the plate 71 is slid in the direction of arrow A, the tip contact portion 71d of the plate 71 is brought into contact with the receiving portion 110d of the lock tool 110, and is stopped.
3 can be rotated in the unlocking direction, so that the lock 1
23 is rotated in the unlocking direction by the spring 125,
The locking portion 123c is disengaged from the locking recess 27e to the outside. Then, the speed increasing gear 10 axially supported by the drive rack 103 is caused by sliding the drive rack 103 in the direction of arrow a.
6 is a small gear 106B with respect to the fixed upper rack 75.
Will be engaged and rotated.

As a result, the large gear 106 of the speed increasing gear 106 is
By the rotation of A, the carrier 27 is sent out in the arrow A direction through the rack 28, and the carrier 27 is accelerated and slid in the arrow A direction as the drive rack 103 moves. The sliding of the carrier 27 is performed until the contact portion 27a of the carrier 27 contacts the receiving portion 110a of the lock tool 110. The sliding of the carrier 27 causes the tray 23 to slide in the arrow A direction with respect to the tray base 22. Further, since the abutting portion 27a is brought into contact with the receiving portion 110a, the stopper tool 110 is rotated against the biasing spring 114, and thus the locking portion 110c.
Is engaged with the locking recess 27b of the carrier 27. As a result, the moving position of the carrier 27 toward the front end is maintained. It should be noted that the locking rotation of the stopper 110 causes the receiving portion 110b to escape inward with respect to the tip abutting portion 71d of the plate 71.

As a result, the plate 71 can be slid in the direction of arrow A. Therefore, the one plate 71 is slid in the direction of arrow A, so that the elevating means 70 is moved upward. The spindle 41 and the recording / reproducing device 62 are raised, and the time of change shown in FIG. 13 is reached.

At the time of closing shown in FIG. 14 (A), one plate 71 is further slid in the direction of arrow A as compared with the time of playing shown in FIG. 11 (A).
As a result, the lifting means 70 is lowered.
Then, the lower spindle 41 and the recording / reproducing device 62 are lowered.

At the time of closing shown in FIG. 14A, the drive gear 101 can be rotated in the direction of the arrow to open at the time shown in FIG. 14B. That is, the drive rack 103 is slid in the arrow A direction by the rotation of the drive gear 101, and the device main body 20
The upper rack 7 on the plate 71 stopped in the direction of arrow A by contacting a stopper (not shown) provided at the front part of the
5, the small gear 106B is meshed and rotated, and the carrier 27 is slid in the arrow A direction via the rack 28 by the rotation of the large gear 106A of the speed increasing gear 106. At this time, the carrier lock tool 112 is rotated by the urging spring 114, and the stopper portion 112a is engaged with the stopper recess 27c of the carrier 27 as shown in FIG. 14B and FIG. Thus, the carrier 27 is locked. Due to the action of the carrier lock tool 112, the tray base 22 and the tray 23, which are integrated with the carrier 27, are projected and moved in the arrow A direction.

The movement of the tray base 22 and the tray 23 in the arrow B direction from the open time shown in FIG. 14B to the close time shown in FIG. This can be done by rotating in the direction of arrow E.

According to such a horizontal driving means 100,
Drive of the tray 23 having greatly different operation load, and both the spindles 31 and 41 and the lifting means 7 of the disk playing means 60.
0 drive, gears 106A, 106 of two steps
By freely selecting the module B, that is, the pitch circle diameter, the driving force transmitted from the common driving source can be freely set according to the load of the tray 23 and the elevating means 70 and the required speed. .

Next, the rotation of the drive source 140 composed of a motor that can be driven forward and backward is controlled by rotating the drive gear 10 of the horizontal drive means 100.
17 and 18 show the configuration of the reduction gear mechanism 141 connected to No. 1, the configuration of the gear train 149 provided on the side of the horizontal drive unit 100, the configuration of the gear train 151 provided in the vertical drive system of the spacer 38, and the like. , FIG. 34 will be described.

That is, the drive source 140 composed of a motor that can be driven in the normal and reverse directions is fixed to the front side of the apparatus main body 20, the transmission pulley 143 attached to the output shaft 142 thereof, and the shaft 144 on the intermediate side of the apparatus main body 20. An elastic belt 146 is suspended between a passive pulley 145 that is rotatably provided via the elastic belt 146. A cylindrical gear 147 is fixed to the lower surface side of the passive pulley 145. The above 142 to 147 constitute an example of the speed reduction mechanism 141 that connects the rotation of the drive source 140 to the drive gear 101.

The gear train 149 provided on the side of the horizontal drive means 100 is the drive gear 10 of the horizontal drive means 100.
1 and a large-diameter passive gear 108 that is integrated with the drive gear 101, and the like constitute an example thereof.

The gear train 151 provided in the vertical drive system of the spacer 38 has a passive gear 152 provided so as to face the cylindrical gear 147.
Is rotatably provided on the apparatus body 20 side via a shaft 153. A cylindrical transmission gear 154 is fixed to the lower surface side of the passive gear 152. A first intermediate gear 155, which constantly meshes with the transmission gear 154, is rotatably provided via a shaft 156 on the elevating base 42 of the disk holding means 30, and a second intermediate gear 155 which constantly meshes with the first intermediate gear 155. An intermediate gear 157 is rotatably provided via a shaft 158.

The above 152 to 158 form an example of the gear train 151 provided in the vertical drive system of the spacer 38. The second intermediate gear 157 always meshes with the ring gear 43b of the disk holding means 30.

Next, the switching gear 161 and this switching gear 1
The structure of the drive switching means 165 for sliding 61 in the axial direction will be described with reference to FIGS. 17, 18 and 34. That is, the switching gear 161 is provided so as to face all of the tubular gear 147, the passive gear 108, and the passive gear 152.

The switching gear 161 is provided so as to be slidable (movable up and down) and rotatable with respect to the shaft 162 from the apparatus main body 20 side. And the switching gear 16
Reference numeral 1 includes a large-diameter gear portion 161A that is always meshed with the tubular gear 147, and a small-diameter gear portion 161B provided on the lower surface of the large-diameter gear portion 161A. The switching gear 16
1 is configured to be urged downward by the compression spring 163, and to be lifted up against the compression spring 163 by the withdrawal movement of the drive switching means 165 including a plunger and a lever.

Further, the switching gear 161 is the drive switching means 1
When 65 is not actuated and is lowered by the elastic force of the compression spring 163, the small-diameter gear portion 161B is moved to the passive gear 108.
When the drive switching means 165 is actuated and lifted against the elastic force of the compression spring 163, the large-diameter gear portion 161A meshes with the passive gear 152.

As a result, the switching gear 161 is connected to the drive source 140 via the speed reduction mechanism 141, and
The gear train 149 provided in the horizontal drive means 100 is slid in the axial direction by the operation of the drive switching means 165.
Alternatively, it becomes possible to selectively mesh with either one of the gear trains 151 provided in the drive system for raising and lowering the spacer 38.

The speed reduction mechanism 141 and the gear train 14 having the above-mentioned configuration
According to the configuration of 9, the gear train 151, the switching gear 161, and the like, the forward / reverse drive of the drive source 140 is transmitted to the tubular gear 147 via the reduction mechanism 141 having the elastic belt 146, and the tubular gear 147 is decelerated. And rotate it in the reverse direction. Then, during the sliding of the switching gear 161 by the drive switching means 165, there is a switching mode including at least rotational driving, stopping, and reverse driving of the switching gear 161. At this time, the forward / reverse switching mode described above is applied to the drive source 140.
It is controlled so that the rotation direction immediately before the start of the switching is started from inversion.

That is, in FIG. 35, the mode change A is the play-to-change-up mode, or the play-change-to-stock-mode ascending mode change mode B is the play-to-change-to-play or open mode, or the stock-raise-to-change mode is the open-mode Switching C is a stock-to-change-up mode switching D is stock-to-change-to-fall mode switching E is a rising-to-change to stock-mode switching F is a play-to-change-down mode, or a play / change-to-stock-down mode G is a change after descending to stock mode switching. H is a change after ascending, playing, or opening, or a change after stock descending and opening. In either mode, the drive switching means 16 is used.
During forward / reverse sliding of the switching gear 161 by 5, the drive source 140 is controlled so as to start from reverse rotation with respect to normal rotation or from forward rotation with respect to reverse rotation.

That is, for example, in mode switching A, in each line of forward rotation or reverse rotation of the drive source 140, the upper side indicates the brake on and the lower side indicates the brake off. Therefore, in the M region, the rotation is stopped because both the forward rotation and the reverse rotation are brake-on, and while the drive switching means 165 is sliding, the reverse rotation is braked off and the reverse rotation is started in the N region, and In the O region, the forward rotation is braked off and the reverse rotation is braked on to perform the desired forward rotation.

When the drive switching means 165 is actuated to raise the switching gear 161 against the elastic force of the compression spring 163, as shown in FIG.
The large-diameter gear portion 161A meshing with the gear 7 meshes with the passive gear 152. As a result, the switching gear 1
After the completion of the switching slide of 61, the forward / reverse drive of the drive source 140 is transmitted to the ring-shaped gear 43b of the disk holding means 30 via the gear train 151, and the ring-shaped gear 43b is rotated in the normal and reverse directions.

When the drive switching means 165 is inoperative and the switching gear 161 is lowered by the elastic force of the compression spring 163, as shown in FIG.
61A disengages from the passive gear 152,
Then, the small-diameter gear portion 161B meshes with the passive gear 108. As a result, after the switching sliding of the switching gear 161 is completed, the forward / reverse drive of the drive source 140 is transmitted to the drive gear 101 of the horizontal drive means 100 via the gear train 149, and the drive gear 101 is rotated in the forward / reverse direction. .

In such an operation, the switching gear 1 is moved while the switching gear 161 is sliding by the drive switching means 165.
A switching gear 16 for switching between two drive systems by having a switching mode including rotational drive, stop, and reverse drive of 61.
Since the engagement of the gear train 1 into the gear trains 149 and 151 of each drive system at the time of switching is performed while slightly rotating, stopping, and reversing, the switching gear 161 slides by hitting the tips of the teeth. This can be performed reliably without being hindered, so that the drive source 140 can be shared and the drive system can be partially shared, so that the number of parts can be reduced and the device can be downsized.

By using the elastic belt 146 as a part of the reduction mechanism 141, the side pressure of the elastic belt 146 remains in the drive system when the driving of the drive source 140 is stopped, and the switching gear 161 is not switched. Since the load increases when the vehicle comes out of the meshing with the teeth of the drive system connected to, the repeated rotation, stop, and reversal work more effectively.

Further, when the drive is switched, the switching gear 161
By controlling the initial rotation direction of the drive to start rotating in the opposite direction to the rotation direction immediately before the stop of the drive system connected before switching, the action of stopping the rotation due to the inertia of the drive after the drive is stopped Can reduce the waiting time from the drive stop before switching to the switching mode and the disk replacement time. Further, in the configuration using the elastic belt 146 as described above, the elastic belt 1
It is particularly effective in reducing the switching load due to the side pressure of 46.

Next, the structure of the disk gap securing means 170 will be described with reference to FIGS. That is, the disc gap securing means 170 is configured to be able to enter between the storage discs vertically adjacent to the performance disc. The disc gap securing means 170 is provided between the disc playing position B and the disc storing position A, and has a shaft portion 171 rotatably supported by the elevating base 42 of the lower spindle 41. The shaft portion 171 is composed of a lever 172 that is continuously provided at two positions in the left-right direction.

At the tip of both levers 172, there are provided entry portions 173 that can be inserted between the adjacent storage disks. These entry portions 173 have an acute-angled joint portion.
It is composed of two smooth flat surfaces 173a and 173b, and the flat surfaces 173a and 173b can directly contact the end faces of the upper and lower discs to push the adjacent discs up and down. It may be configured.) Is configured. At that time, the two entrance portions 173 of the disk gap securing means 170 are provided at substantially symmetrical positions with the common center line of the performance disk and the storage disk sandwiched therebetween.

The disk gap securing means 170 is configured to be driven by the elevating means 70.
That is, the disk gap securing means 170 is configured so that the lever 172 is erected by the spring 174 provided between it and the elevation base 42 side, and the entry portion 173 is retracted from between the end surfaces of the upper and lower disks. . Then, at the end of the shaft portion 171, a lever-shaped cam follower 17
5 is provided, and a cam body 176 is provided on the inner surface of the other plate 81.

An example of the disk gap securing means 170 is constituted by the above 171-176. Then, according to the disc gap securing means 170, the plate 81 moves to the disc playing position B, and the cam follower 175 is moved.
Acting on the cam body 176, the lever 172 is tilted to the disk storage position A side against the spring 174, and the entry portion 173 is inserted between the adjacent storage disks.

Therefore, as described above, in order to reduce the size of the apparatus, the disc storage position A and the disc playing position B are close to each other, and the stored discs 1 and 2 and the playing discs 1 and 2 are flat. Even if the disc gap securing means 170 is configured to overlap with each other, the disc gap securing means 170 prevents the gap from narrowing even when vibration or the like is applied, as well as entering the gap between the upper and lower storage discs adjacent to the performance disc. , It is possible to prevent the sound skipping and the disc damage due to the contact between the performance disc and the storage disc.

Further, since the lever 172 is provided as the disc gap securing means 170, the disc gap securing means 170 can be easily positioned, and the gap can be stably secured with a simple structure. Further, since the disk gap securing means 170 is configured to be driven by the lifting / lowering means 70, the timing for lifting / lowering the lower spindle 41 by the lifting / lowering means 70 and the disk playing means 60.
The disk gap securing means 170 can be driven without shifting with respect to the timing of raising and lowering.

Further, by providing the disc gap securing means 170 between the disc storing position A and the disc playing position B, the gap can be secured at a position close to both the disc storing position A and the disc playing position B. It can be secured accurately.

Then, the disk gap securing means 170 is
The entry portion 173 between the adjacent discs is provided with the discs 1 and 2.
Since the storage disc is prevented from tilting with respect to the performance disc by the entrance portions 173 on the left and right,
It is possible to stably secure the gap regardless of the form of action such as the inclination and vibration of the device.

Further, since the entrance portion 173 of the disc gap securing means 170 is constituted by a plane having an acute-angled joint part, the disc gap securing means 170 of the disc gap securing means 170 is placed between the two storage discs vertically adjacent to each other. When the front end moves in, it is possible to aim at the gap between the discs 1 and 2 at one point, so that a margin can be secured for the positional deviation when the disc gap securing means 170 moves in. Also,
By making the contact surfaces of the disks flat and smooth 173a and 173b, the load of sliding on the end surfaces of the disks 1 and 2 can be reduced, and it is possible to prevent the disks from being caught in contact with the disk ends.

Next, the concealing means 130 is rotatably supported by the apparatus main body 20 and is capable of concealing at least a part of the opening 10a generated by the projection of the tray 23 to the second position. 1, FIG. 4, FIG. 22 to FIG.
7 will be described. Here, the first position at which the disc can be played in the device body 20 is the disc playing position B, and the tray 23 is at the second position where the disc can be taken out from the device body 20 and replaced. It is the disk ejection / replacement position C.

The concealment means 130 is the device body 20.
And a lever 131 that is rotatably supported and that rotates in response to the movement of the tray 23. This lever 131
Are a left-right pair and are integrated with a left-right rotating shaft 132 rotatably supported by the apparatus main body 20. At that time, a pair of levers 131 are provided at positions substantially symmetrical with respect to the centers of the disks 1 and 2 placed on the tray 23 and at intervals smaller than the outer diameter of the small-diameter disk 2. It has a convex portion 133. And the convex portion 13
The opposite end portions of 3 are respectively formed on the serrated surface 133a.

Further, a passive lever 134 is integrated with the other end (left end) of the rotary shaft 132, and the passive lever 134 has a lever 131 and a passive lever 134.
A passive cam 135 is integrally provided facing the rear side when is rotated to the rear side and has a horizontal posture.

On the other side of the tray base 22, on the lower surface of the front-rear intermediate portion, when the tray base 22 is moved together with the tray 23 so as to project in the arrow A direction, the passive base 135 goes under the passive cam 135. A cam 22d for rotating the cam 135 upright is formed. Thus, the rotation of the lever 131 is configured such that the cam 22d provided on the tray base 22 comes into contact with a part of the lever 131 as the tray 23 projects and is biased to rotate. ing.

Further, on the other side of the tray base 22, a cam strip 22e is formed on the lower surface from the front-rear intermediate portion to the front end. The cam strip 22e contacts the passive cam 135 that has been rotated upright from the front side, and the passive cam 1
The passive cam 13 which is turned sideways while turning 35 sideways.
5 is arranged on the upper side of 5 to prevent the passive cam 135 from swinging in the upright rotation direction while the tray 23 is moving.

Due to the above 131 to 135, the concealing means 13
An example of 0 is configured. According to the concealing means 130, as shown in FIGS. 22 and 23, when the tray 23 is moved together with the tray base 22 in the arrow B direction, and the tray 23 is at the disc playing position B,
Along with the passive cam 135, the passive lever 134 and the lever 131 are turned sideways to the rear side.

Then, the tray 23 is set to the disk playing position B.
When the disc is ejected from the disc to the exchange position C, as shown in FIG. 24, the cam strip 22e is positioned above the sideways passive cam 135 and the passive lever 134 is placed.
In addition, the lever 131 is prevented from swinging in the upright rotation direction.

When the tray 23 is moved to the disc ejecting / removing position C by such protruding movement, the cam 22d on the tray base 22 side is below the passive cam 135 as shown in FIGS. Then, the passive cam 135 is erected and turned by the cam action. Then, by the upright rotation of the passive cam 135, the pair of left and right levers 131 is integrally rotated through the rotation shaft 132, and thus both levers 131 are in the upright state.

As a result, the opening 1 generated by the protrusion of the tray 23 to the disc take-out / replacement position C is generated.
Both sides (at least a part) of 1a are both levers 131
It is hidden by the convex portion 133 that is integral with the. In this state, the discs 1 and 2 are manually taken out and replaced with respect to the tray 23 at the disc take-out exchange position C. After that, the tray 23 is moved in the arrow B direction together with the tray base 22, so that the cam strip 22e is moved.
Comes into contact with the passive cam 135 rotated upright from the front side,
This passive cam 135 is automatically turned sideways, and as shown in FIG.
2. As shown in FIG. 23, the tray 23 is returned to the disc playing position B.

As described above, when the disks 1 and 2 are taken out or replaced manually, for example, the small-diameter disk 2 is opened by opening the tray 23 and opening 11
Even when it is about to be accidentally dropped from a into the apparatus main body 20, as shown by the phantom lines in FIGS. 25 to 27, the pair of convex portions 133 provided at intervals smaller than the outer diameter of the small-diameter disk 2. The end portion of the small-diameter disk 2 is caught between the saw-toothed concavo-convex surfaces 133a formed in the above, and thus it is possible to prevent the small-diameter disk 2 from falling into the apparatus main body 20.

At this time, it is caught between the saw-toothed concavo-convex surfaces 133a and is prevented from moving up and down, so that it is possible to prevent the end portion of the small-diameter disk 2 from floating and climbing over the convex portion 133. The stuck condition is maintained.

As described above, the rotation of the lever 131 and the like is automatically driven by the cam 22d and the cam ridge 22e provided on the tray 23 side when the tray 23 is opened / closed. Even if the levers 1 and 2 are pushed in the inner direction of the device body 20 while being in contact with the lever 131, the levers 131 and the like do not rotate and fall, and the discs 1 and 2 fall into the device body 20. Can be reliably prevented.

Next, the structure of the detecting means 180 which controls a part of the control will be described with reference to FIGS. That is, the detection unit 180 is composed of a detection switch group provided on the fixed substrate 181 side integrated with the apparatus main body 20 side and an operation cam group provided on one plate 71 or the tray base 22 side. Here, the detection switch group provided on the fixed substrate 181 side includes an open switch 182, a first switch 183, and a second switch 184, which are sequentially arranged from the front side to the rear side.

Further, one plate 71 is provided with a first operation cam 185 and a second operation cam 186 for simultaneously turning on the first switch 183 and the second switch 184,
A third operation cam 187 for turning on only the first switch 183 is provided, and a fourth operation cam 188 for turning on only the second switch 184 is provided. As shown in FIG. 3, a fifth operation cam 189 for turning on only the open switch 182 is provided on the tray base 22 side.

The detection means 18 is constituted by the above 181 to 189.
An example of 0 is configured. According to the detecting means 180, when the one plate 71 moves to the above-mentioned playing position, the first operation cam 185 and the second operation cam 186 turn on the first switch 183 and the second switch 184 at the same time. Thus, it is possible to detect and control the play time by moving to the performance position (see A in FIG. 16). Then, when one plate 71 moves to the change position described above, the third operation cam 187 turns on only the first switch 183, so that the change time due to the movement to the change position can be detected and controlled (FIG. 16 B).

Furthermore, when one plate 71 moves to the above-mentioned stock position, the fourth operation cam 188 moves to the second position.
Only the switch 184 is turned on to detect and control the stock time due to the movement to the stock position (see C in FIG. 16). Further, when the tray base 22 is opened and opened, the fifth operation cam 1 is provided on the tray base 22 side.
89 turns on only the open switch 182 so that the open time can be detected and controlled.

The operation of the disk playing device 19 which is an example of the embodiment of the present invention configured as described above will be described. Note that the timing chart of FIG. 36 is also referred to in the description of the operation. In FIG. 36, the drive rack 1
03, one plate 71 (same for the other plate 81), cam gear 92, carrier 27, tray base 2
2, tray 23, lifting base 42, lifting base 61, first switch 183, second switch 184, open switch 1
Each drive of 82, open, close, play,
It shows the timings of changing, lowering the lower spindle, rearing the tray, and stocking.

In FIGS. 1 and 4, the tray base 22 and the tray 23 are driven by the horizontal drive means 100 to come out from the front panel 10 in the direction of arrow A, and then the drive source 140 is stopped by the open switch 182. It shows the state of being.

In this state, after exchanging (or supplying) the large-diameter disk 1 (the same applies to the small-diameter disk 2) on the tray 23, pressing the open / close key 13 causes the tray base 22 to move to the arrow mark. Move to the direction of b,
As shown in FIG. 9 and FIG. 28, the large diameter disc 1 is conveyed to the disc playing position B.

Then, the recording / reproducing device 6 is operated by the elevating means 70.
2 is lifted and the large-diameter disc 1 is clamped to be in a play state (see FIG. 11A, FIG. 16A, and FIG. 29).
At this time, the disc gap securing means 170 is rotated to the disc storage position A side as shown in FIG. 22 to secure the desired gap. After the play, when the open / close key 13 is pressed again, the tray base 22 moves in the direction of arrow A and is projected as shown in FIG. The diameter disc 1 can be taken out.

At this time, both sides of the opening 11a are automatically hidden by the projections 133, so that when the large-diameter disk 1 is about to be accidentally dropped from the opening 11a into the apparatus main body 20, a pair of The end of the large-diameter disk 1 is caught between the serrated irregular surfaces 133a formed on the convex portion 133, and is prevented from falling into the apparatus body 20.

After playing as described above, the large-diameter disk 1 on the tray 23 and the large-diameter disk 1 at the disk storage position A are recorded.
When changing and Press the desired key from the keys 12. Then, the descending operation of the elevating means 70 lowers the recording / reproducing device 62 to open the clamp, and the lower spindle 41 lowers to form a gap between the lower spindle 41 and the upper spindle 31.
The tray is in the front state (see FIG. 11B and FIG. 30).

Subsequently, the horizontal driving means 100 is operated to move the tray 23 in the arrow B direction with respect to the tray base 22 to position the large-diameter disk 1 in the gap between the spindles 31 and 41, and 23 and the center of the large-diameter disk 1 are conveyed to a position where they coincide with the centers of both spindles 31 and 41, so that the lower spindle descends and the tray rear state (see FIG. 12A and FIG. 31).

Then, by the raising operation of the elevating means 70,
The elevating base 42 rises and the large-diameter disk 1 is lifted by the tray 23 to be in a stock state (B in FIG. 12,
(See FIG. 16C and FIG. 32). After passing through the switching mode, the disc holding means 30 is moved upward by one pitch of the spacers via the gear train 151, so that the large-diameter disc 1 is moved.
Are held on the upper spindle 31 side via a spacer 38.

Then, by the lowering operation of the elevating means 70,
After the elevating base 42 descends to form a gap between the spindles 31 and 41, the horizontal drive means 100 operates to move the tray 23 in the arrow A direction with respect to the tray base 22, and the tray 23 Returning to the disc playing position B, the lower spindle is lowered and the tray is in the front state (see FIG. 11B and FIG. 30).

Then, the raising / lowering base 42 is raised by the raising operation of the raising / lowering means 70, and after the two spindles 31 and 41 are connected, a change state is obtained (see FIGS. 13 and 16B and 33). . After passing through the switching mode, the disc holding means 30 is rotationally operated via the gear train 151,
Thus, the spacer 38 is moved between the spindles 31 and 41 to move the target large-diameter disk 1 to the upper spindle 31.
To the position where it can be held at the bottom of the side.

Then, by the lowering operation of the elevating means 70,
After the elevating base 42 descends to form a gap between the spindles 31 and 41, the horizontal driving means 100 operates to move the tray 23 in the arrow B direction with respect to the tray base 22, thereby causing the spindles 31 and 41 to move. Empty tray 2 in the gap between 41
3 is positioned (when the lower spindle is descending and the tray is rear).

Then, by the raising operation of the elevating means 70,
The elevating base 42 rises, the two spindles 31 and 41 are connected, and the stock state is restored again (FIG. 12B, FIG. 1).
6C, see FIG. 32). Then, after passing through the switching mode, the disc holding means 30 is lowered through the gear train 151, so that the intended large-diameter disc 1 held on the upper spindle 31 side is transferred onto the tray 23.

Then, by the lowering operation of the elevating means 70,
After the elevating base 42 descends to form a gap between the spindles 31 and 41, the horizontal drive means 100 operates to move the tray 23 in the direction of arrow A with respect to the tray base 22. After the large-diameter disc 1 is positioned at the disc playing position B (when the lower spindle is descending and the tray is front), the above-mentioned play state is established (see FIG. 11A, FIG. 16A, and FIG. 29).

As described above, the positions of the plurality of spacers 38 and the plurality of large-diameter discs 1 loaded on the both spindles 31 and 41 are vertically driven to move an arbitrary large-diameter disc 1 to both spindles. From 31 and 41, the disk playing position B, the ejecting position, and again both spindles 31 and 4
It is possible to change the disc to the disc storage position A in 1 and to select and record an arbitrary large-diameter disc 1. This eliminates the need for a stocker having a plurality of shelves, a plurality of sub-trays, and the like, so that it is possible to provide a disc changer that is lightweight, inexpensive, and has excellent storability and operability.

During the above operation, a plurality of modes among the modes shown in FIG. 35 are performed. In the disc changer which is an example of the embodiment of the present invention operated as described above, the sequence of the respective states during the disc exchange operation is as follows. (1) Horizontal drive in the direction of B (= drive of lifting means + drive of disk transport means) "Play state" → (change state: plain) → (spindle open & tray front) → (spindle open & tray rear) → " Stock state ”. ． Here, the drive is switched from horizontal to vertical drive of the spacer. (2) Vertical drive 1 pitch increase in stock state. ． ． This operation moves the disc on the tray onto the spacer. After raising the pitch by 1 pitch, switch to horizontal drive again (3) Horizontal drive in direction "stock state" → (spindle open & trailer) →
(Spindle open & tray front) → "changed". ． Here, the drive is switched from horizontal again to vertical drive of the spacer (4) Vertical drive in the changed state Raise or lower to a predetermined position. ． ． Next, move the disc to be played to a position where it can be held at the bottom of the upper spindle. After moving the spacer, switch to horizontal drive again (5) Horizontal drive in the B direction "changed" → (spindle open & tray front)
→ (Spindle open & tray rear) → "Stock state". ． Here, the drive is switched from horizontal again to vertical drive of the spacer (6) Vertical drive in the stock state is lowered by one pitch. ． ． This operation moves the disc on the spacer onto the tray. After lowering by one pitch, switch to horizontal drive again (7) Horizontal drive in direction a "stock state" → (spindle open & trailer) →
(Spindle open & tray front) → (Change state:
Pass-through → "Play state". ． Disk change is over! The above-mentioned operation shows the procedure for automatically exchanging the disc being played for another disc stored in the spindle. Various operations such as selecting and playing a disc or opening the disc can be performed by key operation.

In the disc playing device which is an example of the embodiment of the present invention operated as described above, the large-diameter disc 1 is used.
The small diameter disc 2 can be handled in the same manner, and the large diameter disc 1 and the small diameter disc 2 can be handled in the same manner.

[0148]

According to the disc playing device of the present invention, the concealing means has a lever which rotates in response to the movement on the tray side, and the shape of this lever is relative to the center of the disc placed on the tray. With a configuration that has a pair of convex portions that are provided in a substantially symmetrical position at a distance narrower than the outer diameter of the small-diameter disc, and the opposite ends of the convex portions each have an uneven surface formed in a sawtooth shape. , Even if the disc is accidentally dropped into the main body of the device from the opening created by opening the tray, the edges of the disc are caught by the sawtooth-shaped concave and convex surfaces provided at the two left and right places, It is possible to prevent the disc from falling. In that case, sawtooth unevenness
It will be caught between the faces and will also be prevented from moving up and down,
As a result, the end of the small-diameter disk floats up and gets over the convex
Can be prevented and the stuck condition can be maintained.
It

[Brief description of drawings]

FIG. 1 is an external perspective view of a disc playing device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the disc playing device according to the embodiment of the present invention with an outer case removed.

3A and 3B show a tray base and a tray of a disc playing device according to an embodiment of the present invention, where A is a plan view, B is a vertical side view, and C is a vertical front view.

FIG. 4 is a plan view of the disc playing device according to the embodiment of the present invention with an outer case removed.

FIG. 5 is a vertical cross-sectional view showing the disc holding means of the disc playing device according to the embodiment of the present invention when the lower spindle is lowered.

FIG. 6 is a vertical cross-sectional view showing the disc holding means of the disc playing device according to the embodiment of the present invention when the lower spindle is raised.

FIG. 7 is a perspective view of a lower spindle portion showing the disc holding means of the disc playing device according to the embodiment of the present invention.

FIG. 8 is a plan view showing lifting means of the disk playing device according to the embodiment of the present invention.

FIG. 9 is an exploded perspective view of a rack and a gear portion, showing an elevating means and a horizontal driving means of the disc playing device according to the embodiment of the present invention.

FIG. 10 is a cross-sectional plan view of the speed increasing gear portion, showing the elevating means and the horizontal driving means of the disc playing device according to the embodiment of the present invention.

11A and 11B show an elevating means and a horizontal driving means of the disk playing device according to the embodiment of the present invention, where A is a side view when playing and B is a side view when lower spindle is descending.

FIG. 12 is a side view of a tray playing rear view, and B is a side view of a disc stocking apparatus, showing an elevating means and a horizontal driving means of a disk playing device according to an embodiment of the present invention.

FIG. 13 is a side view of the disc playing device according to the embodiment of the present invention, showing the elevating means and horizontal driving means when changing.

FIG. 14 is a side view of the disk playing device according to the embodiment of the present invention, showing a lifting means and a horizontal driving means, wherein A is a side view when closed and B is a side view when opened.

FIG. 15 is a plan view of a stopper portion showing the elevating means and the horizontal driving means of the disc playing device according to the embodiment of the present invention.

16A and 16B show horizontal driving means and switch arrangement of the disk playing device according to the embodiment of the present invention, where A is a side view during play, B is a side view during change, and C is a side view during stock.

FIG. 17 is a plan view showing horizontal driving means of the disk playing device according to the embodiment of the present invention.

FIG. 18 shows horizontal driving means of the disk playing device according to the embodiment of the present invention, where A is a development side view at the time of switching the disk holding means side, and B is a development side view at the time of switching the horizontal driving means side.

FIG. 19 is a plan view showing a disc gap securing means of the disc playing device according to the embodiment of the present invention.

FIG. 20 is a side view of the disc playing device according to the embodiment of the present invention when the disc gap securing means is turned off.

FIG. 21 is a side view of the disc playing device according to the embodiment of the present invention when the disc gap securing means is turned on.

FIG. 22 is a plan view showing the concealing means of the disc playing device according to the embodiment of the present invention at the time of playing.

FIG. 23 is a side view showing the concealing means of the disc playing device according to the embodiment of the present invention at the time of playing.

FIG. 24 is a side view showing the concealing means of the disc playing device according to the embodiment of the present invention during movement from the play time to the open time.

FIG. 25 is a plan view showing the concealing means of the disc playing device according to the embodiment of the present invention when it is opened.

FIG. 26 is a side view showing the concealing means of the disc playing device according to the embodiment of the present invention at the time of opening.

FIG. 27 is a front view of the disc playing device according to the embodiment of the present invention when it is hidden, showing the concealing means.

FIG. 28 is a plan view showing a disc exchanging operation of the disc playing device according to the embodiment of the present invention at the time of playing.

FIG. 29 is a side view showing a disc exchanging operation of the disc playing device according to the embodiment of the present invention at the time of playing.

FIG. 30 is a side view showing the disc exchange action of the disc playing device according to the embodiment of the present invention, with the lower spindle lowered and the tray front side.

FIG. 31 is a side view showing the disc exchanging action of the disc playing device according to the embodiment of the present invention when the lower spindle is lowered and the tray is rear.

FIG. 32 is a side view showing a disc exchange action of the disc playing device according to the embodiment of the present invention when the disc is stocked.

FIG. 33 is a side view showing a disc changing operation of the disc playing device according to the embodiment of the present invention when the disc is changed.

FIG. 34 is an exploded perspective view of the disc playing device according to the embodiment of the present invention.

FIG. 35 is a timing chart of switching modes of the disc playing device according to the embodiment of the present invention.

FIG. 36 is a timing chart of each part of the disc playing device according to the embodiment of the present invention.

FIG. 37 is a perspective view of a disk changer in a modified example of the related art with an outer case removed.

FIG. 38 is a plan view of a disk changer according to a conventional improved example with an outer case removed.

FIG. 39 is a side view of a disc holding means portion of a disc changer in a conventional modified example.

[Explanation of symbols]

1 large diameter disc 2 small discs 12 No. Key 13 Open / Close key 14 Play Key 15 stop key 19 Disc playing device 20 Device body 21 Disc transport means 22 tray base 22d cam 22e Cam striation 23 trays 24 12cm disc holder 25 8cm disc holder 27 careers 28 racks 30 disk holding means 31 upper spindle 38 Spacer 41 Lower spindle 42 Lifting base 50 pin 51 pin 60 disc playing means 61 Lifting platform 62 recording / reproducing apparatus 65 pin 66 pin 70 Lifting means 71 plate (single part) 74 Cam groove 74a Front upper cam section 74b V-shaped cam part 74c Middle upper cam part 74d Rear upper cam section 75 upper rack 76 Lower rack 81 plates 84 Cam groove 84a Front upper cam section 84b Middle upper cam section 84c V-shaped cam part 84d Rear upper cam section 85 Cam groove 85a Front and lower cam section 85b Intermediate upper cam section 85c Rear lower cam section 87 Connection lever 92 Cam gear 96 cam groove 100 horizontal drive means 101 drive gear 103 drive rack 106 Speed increasing gear 130 Concealment means 131 lever 132 rotation axis 133 convex 133a uneven surface 134 Passive lever 135 Passive cam 140 drive source 141 Reduction mechanism 147 tubular gear 149 gear train 151 gear train 161 switching gear 165 Drive switching means 170 Disc clearance securing means 180 detection means A disk storage position B disc playing position (first position) C Disc take-out exchange position (2nd position)

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Ota 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-7-21665 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G11B 17/22-17/30

Claims (2)

(57) [Claims] 1. An apparatus main body, a first position where the disk can be played in the apparatus main body, and a tray which is movable so as to take a second position where the disk can be taken out from the apparatus main body and taken out and replaced, and the apparatus main body. And a concealing means capable of concealing at least a part of an opening generated by the protrusion of the tray to the second position, the concealing means comprising: It has a lever that rotates in response to movement on the tray side, and the shape of the lever is substantially symmetrical with respect to the center of the disc placed on the tray and narrower than the outer diameter of the small-diameter disc. A disc playing device comprising a pair of convex portions provided at intervals, and opposite end portions of the convex portions each having an uneven surface formed in a sawtooth shape. 2. The rotation of the lever is configured so that a cam provided on the tray side comes into contact with a part of the lever side as the tray is projected and is biased to rotate. 2. The disc playing device according to claim 1, wherein: