JP3418547B2 - Disc changer - 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 changer in which a plurality of discs are loaded, and an arbitrary disc is selected from the loaded plurality of discs for recording / reproducing.

[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 disc holding means 204 for detachably supporting a plurality of spacers 203, and a spacer 203 in a vertical direction for selecting an arbitrary position of a plurality of discs 216 held by the plurality of spacers 203. The vertical driving means 205 for driving the holding claws 200, the spindle driving means 206 for driving the holding claws 200 to engage and disengage the plurality of spacers 203 on the upper spindle 201, and the holding claws 20.
0 to the tray 21 from any spacer 203 held
A disc changer including a horizontal conveying means 207 for supporting the disc 216 to the recording / reproducing position X and a disc clamping means 208 for clamping the disc 216 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 216 mounted on both spindles 201 and 202.
Drive the position of the
From the both spindles 201 and 202 to the recording / reproducing position X, the take-out position Z, and again to the both spindles 201 and 20.
The disc can be changed to the storage position Y of the disc 2 and any disc 216 can be selected for recording and reproduction.
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.

At this time, the spacer 203 stacked on the disk holding means 204 has a form in which the lower surface 203B of the upper spacer 203 is placed on the upper surface 203A of the lower spacer 203, as shown in FIG. , Fig. 3
As shown in FIG. 5B, the through hole 2 of the upper spacer 203 is formed in the inclined portion 203C at the upper end of the spacer 203.
03D is held in a state of being fitted in a state where it is fitted halfway.

[0007]

However, in the above-mentioned disc changer, in the form shown in FIG. 35 (A), the spacer 203 is the lower spacer 2
Lower surface 20 of the upper spacer 203 on the upper surface 203A of 03.
Since 3B is held in a mounted state, it is necessary to widen the upper surface 203A, which is the flat surface of the upper end, in order to hold it stably. Therefore, the inclined portion 203C on the outer periphery of the upper end becomes small, and the spacer 203 cannot enter the center hole 216a of the disk 216 during the change operation, and there is a problem that the spacer 203 is caught.

Further, in the form shown in FIG. 35B, since the through hole 203D of the upper spacer 203 is fitted on the inclined portion 203C at the upper end of the spacer in a partially fitted state, it is held when stacked. The condition is unstable,
When vibration or the like is applied, the spacer 203 easily tilts, and if the change operation is performed as it is, the spacer 203 does not engage the holding claw 200 and the spacer 203 falls into the apparatus.

The object of the present invention is to solve the above-mentioned problems, and the spacer is prevented from falling into the device even if vibration is applied to the device without impairing the disk suction margin of the spacer. Is to provide no disc changer.

[0010]

In order to solve the above problems, the disk changer of the present invention has a spacer in which a spacer is formed so as to be able to penetrate the spindle and a center hole of the disk. A cylindrical portion that is formed and has an inclined portion on the outer periphery of the upper end, and a flat plate flat portion that is formed so as to be able to hold a disk, and a portion of the inclined portion that is substantially perpendicular to the flat plate flat portion and a flat plate. A ring-shaped step is formed by cutting out two planes, which are a plane substantially parallel to the plane portion.

According to the present invention, since the stacked spacers are supported by the steps due to the above-mentioned structure, the flat surface of the upper end of the spacer is wide and the suction capacity of the disk is impaired regardless of the size of the gap between the spindle and the spacer. In addition, it is possible to prevent the center of the stacked spacers from deviating and to stabilize the sitting, preventing the spacer from falling due to the center displacement of the spacer even when vibration etc. is applied to the device, and the trapping due to the bad disk suction of the spacer. can do.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is 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. , A disk holding means for releasably supporting a plurality of spacers on a pair of spindles by a holding claw, and the spacer for selecting an arbitrary position of the plurality of disks held by the plurality of spacers. Vertical drive means for driving in the vertical direction, spindle drive means for driving the holding claws to engage and disengage the plurality of spacers on the upper spindle, horizontal transport means for supporting and transporting the disc by a tray, and A recording / reproducing means for recording / reproducing a disc, wherein the spacer has a through hole formed so as to be capable of penetrating the spindle; A cylindrical flat portion formed so as to be capable of penetrating the center hole of the disc and having an inclined portion on the outer periphery of the upper end thereof, and a flat plate flat portion formed so as to be able to hold the disc, and a part of the inclined portion is formed. The disc changer is characterized in that a ring-shaped step formed by notching is formed by two surfaces of a cylindrical surface substantially vertical to the flat plate flat portion and a plane substantially parallel to the flat plate flat portion.

According to the present invention, the positions of the plurality of spacers and the plurality of discs loaded on both spindles are driven in the vertical direction, and any disc is recorded / reproduced and ejected from both spindles. And again the disk storage position on both spindles and disk change,
Moreover, it is possible to record and reproduce by selecting any disc. 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. Moreover, since the spacers stacked in the disc holding part are supported by the step provided in the middle of the inclined part of the spacer itself, the flat surface at the top of the spacer can be wide regardless of the size of the gap between the spindle and the spacer. It is possible to prevent the center deviation of the stacked spacers and stabilize the seat without compromising the disk suction margin, and even when vibration etc. is applied to the device, the spacer falls due to the center deviation of the spacer, and the spacer disk It is possible to prevent trapping due to poor suction.

The invention according to claim 2 is the disc changer according to claim 1, wherein the diameter of the lower end hole of the through hole is larger than the diameter of the cylindrical wall of the step, and the outer diameter of the flat portion of the step. It is configured to be smaller.

With this structure, when the spacers are stacked and held, or when the spacers are engaged with and disengaged from the spindle, it is possible to easily engage the convex portion on the upper side of the step with the through hole of the spacer. Engagement with the spindle is stable.

A disk playing device, which is an example of an embodiment of the present invention, will be described below with reference to FIGS. In FIG. 1, 1 is a large-diameter disk having a diameter of 12 cm, and 2 is a small-diameter disk having a diameter of 8 cm, and central holes 1a and 2a are formed therein. The front panel 10 is attached to the bottom plate 11 and the like. Key 12, open / close key 13,
A play key 14, a stop key 15 and the like are provided. Reference numeral 16 is an outer case for covering the disc changer 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. A tray 23 is guided by the tray base 22 and can slide in the arrow arrow direction. On the tray 23, the exchanged discs 1 and 2 are supplied.

2, FIG. 4, FIG. 24, and FIG. 30, the apparatus 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 recording / reproducing position B is formed on the front side. here,
The centers of the disks 1 and 2 stored in the disk storage position A and the disks 1 and 2 played at the recording / reproducing position B
Distance L from the center of 2 is greater than 10 cm (radius of large disc 1 + radius of small disc 2) and 12 cm
It is set smaller than (the diameter of the large-diameter disk 1).

According to this structure, the large-diameter disk 1 stored and the large-diameter disk 1 being recorded / reproduced are positioned so as to overlap each other when the disk storage position A and the recording / reproduction position B are close to each other. As a result, the device can be downsized. In addition, a large-diameter disk 1 stored and a small-diameter disk 2 being recorded and reproduced,
Alternatively, the accommodated small-diameter disc 2 and the large-diameter disc 1 during recording / reproduction can be arranged at positions where they do not overlap each other in plan view.

Next, the horizontal conveying means 21 for the disks 1 and 2
2 will be described with reference to FIGS. That is, in the apparatus main body 20, a horizontal transfer means 21 for transferring the disks 1 and 2 between the disk storage position A and the recording / reproducing position B is provided. The horizontal conveying 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).

On the upper surface side of the tray 23, a 12 cm disc placing portion 24 and an 8 cm disc placing portion 25 are concentrically formed. At this time, the height of the spacer (discussed later) of the disc holding means is lowered to form a thin disc changer 19, so that the 12 cm disc holder 24 is slightly higher than the 8 cm disc holder 25. Has been formed.

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 horizontal conveying means 21 is constituted by the above 22 to 29. Then, according to the horizontal transport means 21, the carrier 27 is moved in the forward and reverse directions via 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, the disc 1,
2 can be transferred between the disc storage position A and the recording / reproducing position B.

Next, the spacer 3 and the disk holding means 3
2, the configuration of FIG. 2, FIG. 5 to FIG. 9, FIG. 22, FIG.
0 will be described. A disc holding means 30 is provided at the disc storing position A, and the disc holding means 3 is provided.
Reference numeral 0 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 3 in a disengageable manner. Can be transferred to and from the horizontal transfer means 21.

That is, the spacer 3 is formed so as to be able to penetrate through upper and lower spindles (described later) and the center holes 1a and 2a of the discs 1 and 2, and the upper end thereof is formed. It is configured to include a cylindrical portion 6 having an inclined portion 5 on the outer periphery, and a flat plate flat portion 7 formed so as to be able to hold the disks 1 and 2. Then, a part of the inclined portion 5 has a cylindrical surface 8A substantially perpendicular to the flat plate flat portion 7.
And a ring-shaped step 8 which is formed by notching on two surfaces of a flat surface 8B substantially parallel to the flat plate flat portion 7.

Furthermore, the lower end hole diameter 4Φ of the through hole 4 is
Larger than the outer diameter 8AΦ of the cylindrical surface 8A of the step 8, and smaller than the outer diameter 8BΦ of the flat surface portion 8B of the step 8,
That is, 8AΦ <4Φ <8BΦ is set. An example of the spacer 3 is constituted by the above 4 to 8 and the like.

The disk holding means 30 has a spindle mounting plate 32, which is provided between the upper surfaces of the latter half of the side plate 20B, and the upper spindle 31 is provided at the center lower part thereof. Has been. Reference numeral 42 denotes an elevating base (spindle base) which faces the spindle mounting plate 32 from below, and is configured to be driven in the vertical direction by a spindle drive means (described later). A lower 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 attached thereto.
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 includes a claw portion 35a for holding the spacer 3 on the upper spindle 31,
The core portion 35 with which the convex portion 44c on the lower spindle 41 side abuts
b 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. This ring-shaped gear 43b meshes with a second intermediate gear 157 of a vertical drive means (described later),
The outer cylinder 43 is rotated.

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 3 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. One end of the rotation stopper 47 is pivotally supported by the screw portion 46, and the other end thereof is pivotally supported by the elevating base 42.

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

Three claw holes 44b are formed in the upper part of the inner cylinder 44 so that the tips of the claw parts 48b can be withdrawn and withdrawn (see FIG. 9). 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.

On the left and right sides of the elevating base 42, outward pins 50 and 51 are provided. At this time, one (right) pin 50 is provided and the other (left) pin 51 is provided. 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. At this time, the spacer 3 group is externally fitted to the lower spindle 41 via the through hole 4,
The discs 1 and 2 have a central hole 1 with respect to the cylindrical portion 6.
It is externally fitted via a and 2a, and is held on the flat plate flat portion 7.

Further, since the lower inner end portion 6a of the cylindrical portion 6 of the upper spacer 3 is supported by the ring-shaped step 8 provided on the inclined portion 5 of the lower spacer 3, the group of spacers 3 is Regardless of the size of the gap between the spindle 41 and the spacer 3, the flat top surface of the spacer 3 is widened without impairing the suction margin of the discs 1 and 2, and the center offset of the stacked spacers 3 is prevented and the sitting position is improved. Is stabilized.

In this state, when the elevating base 42 is raised (in the direction of arrow C) by the spindle driving means (described later), the lower spindle 41 attached to the elevating base 42 also rises. By the raising of the lower spindle 41, the three holding claws 35 arranged at an angle of 120 °,
The separation prevention claws 48 are fitted between each other, and the convex portions 44c abut the core portion 35b of the holding claws 35. Furthermore, when the convex portion 44c pushes 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 the upper spindle body 31a. Therefore, the spacer 3 is moved to the upper spindle 31 side without being obstructed 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 3 can be moved from the lower spindle 41 to the upper spindle 31 side (see FIG. 6).

In the above state, the second vertical drive means
The rotational force of the intermediate gear 157 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,
Push up the spacer 3. The screw portion 46 is the disc 1,
2 is moved from the lower spindle 41 to the upper spindle 31 and stops when the required disks 1 and 2 are located at the lower end of the upper spindle 31 (see FIG. 7).

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 elevating base 42 is lowered (in the direction of arrow D) by the spindle driving means to once separate the upper spindle 31 and the lower spindle 41 from each other, and then the tray is placed between the upper spindle 31 and the lower spindle 41. Move 23.

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 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 3 and the discs 1 and 2 that have been formed 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 3 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 again raised by the spindle driving means. When the lower spindle 41 hits the upper spindle 31, the holding claw 35
After the spacer 3 is vertically driven to move downward by one slit (one rotation of the lower spindle 41) in a state where the locked state of the upper spindle 31 and the lower spindle 41 are separated from each other, the tray 23 Disk 1 required for
2 is loaded and carried to the recording / reproducing position B or the outside.

According to this structure, the spacers 3 stacked on the disk holding portion are supported by the step 8 provided in the middle of the inclined portion 5 of the spacer 3 itself, so that the gap between the spindles 31 and 41 and the spacer 3 is formed. Irrespective of the size of the spacers, and the flatness of the upper end of the spacer is widened so as not to impair the suction allowance of the discs 1 and 2, it is possible to prevent the center offset of the stacked spacers 3 and stabilize the sitting, vibration, etc. Even when is added to the device, it is possible to prevent the spacer from dropping due to the center shift of the spacer 3 and the trapping due to the disk suction failure of the spacer 3.

Further, the lower end hole diameter 4Φ of the through hole 4 is larger than the outer diameter 8AΦ of the cylindrical surface 8A of the step 8 and smaller than the outer diameter 8BΦ of the flat portion 8B of the step 8. When the spacers 3 are stacked and retained, or when the spacers 31 and 41 are engaged with and disengaged from the spindles 3, the projections on the upper side of the step 8 and the through holes 4 of the spacers 3 can be easily engaged, so that the spacers 3 can be stacked and retained. Also, the engagement and disengagement with the spindles 31, 41 is stable.

Next, the structure of the recording / reproducing means 60 is shown in FIG.
This will be described with reference to FIGS. 4, 10, 21, and 30. At the recording / reproducing position B, recording / reproducing means 60 is provided which is supported on the apparatus main body 20 side so as to be able to move up and down. The recording / reproducing means 60 comprises an elevating table 61 capable of ascending / descending in the arrow honey direction.
A recording / reproducing device 62 for the discs 1 and 2 is provided in a fitting manner on the elevating table 61. And lift 6
Buffer springs 63 for urging the recording / reproducing device 62 upward are provided at a plurality of locations between the recording medium 1 and the recording / reproducing device 62. A disk clamper 64 of the recording / reproducing device 62 is supported by a fixed gap on an upper cover 67 provided between the upper surfaces of the front half of the side plate 20B. In addition, lift 6
One outer pin 65, 66 is provided on each of the left and right sides of 1.

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

Next, the spindle drive means 70 for raising and lowering the lower spindle 41 and the recording and reproducing means 60.
The configuration will be described with reference to FIGS. 4, 10, 18, 21 to 23, and 30.

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.
A cam groove 85 with which a pin 66 provided on the other side of the recording / reproducing means 60 is engaged is provided so as to be divided into front and rear. Then, a pin 65 provided on one side of the recording / reproducing means 60.
Are engaged with cam grooves 96 on the cam gear (described later) side.

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. 1).
1, FIG. 18). 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, the intermediate upper cam portion 84b, and the V-shaped cam portion 8 respectively.
4c and the rear upper cam portion 84d are formed by continuous grooves (see FIGS. 22 and 23). 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 part of the other plate 81 is formed by a continuous groove of the front lower cam part 85a, the intermediate upper cam part 85b and the rear lower cam part 85c from the front part side to the rear part side. (See FIG. 22 and FIG. 25).
The cam groove 96 on the cam gear side is formed in a spiral shape (see FIGS. 10 and 21).

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 recording / reproducing means 60 is engaged is formed.

An example of the spindle drive means 70 is constituted by the above 71 to 96. Then, according to the spindle drive means 70, the gear rotational force on the horizontal drive means (described later) side is transmitted through the upper rack 75 to the one plate 7
When transmitted to 1, the one plate 71 is slid in the arrow arrow direction and the other plate 81 is slid in the opposite direction via the connecting lever 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.

In this way, the left and right plates 71 and 81 are slid in the opposite directions, and the cam gear 92 is rotated corresponding to the movement of the one plate 71, so that the cam grooves 74 and 84 are passed. 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 forming positions of 4, 96, and 85 and the cam shape are determined by the plate 7
The timing to be described later is set to be suitably performed with the movement of 1, 81.

That is, FIG. 18 (A), FIG. 23, 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, the other pin 66 of the recording / reproducing means 60 is engaged with the intermediate upper cam portion 85b of the cam groove 85, and one pin 65 of the recording / reproducing means 60 is engaged with the cam groove 96. Has been done.

When the lower spindle is lowered as shown in FIG. 26 and the tray is in front of the tray, one pin 50 of the lifting 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.
The second pin 66 of the recording / reproducing means 60 is engaged with the rear lower cam portion 85c of the cam groove 85, and the recording / reproducing means 6 is engaged.
One pin 65 of No. 0 is set to engage with the cam groove 96.

Further, when the lower spindle is lowered as shown in FIG. 37 and the tray is rear, one pin 50 of the elevating base 42 engages 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 recording and reproducing means 6 engages with the V-shaped cam portion 84c of the cam groove 84, and the other pin 66 of the recording and reproducing means 60 engages with the rear lower cam portion 85c of the cam groove 85.
One pin 65 of No. 0 is set to engage with the cam groove 96.

18C and 28, 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 moves. The pin 51 engages with the rear upper cam portion 84d of the cam groove 84, and the other pin 66 of the recording / reproducing means 60 has the cam groove 85.
The rear lower cam portion 85c is engaged, and one pin 65 of the recording / reproducing means 60 is set to be engaged with the cam groove 96.

Further, in the disc change state shown in FIGS. 18B and 29, one pin 50 of the elevating base 42 engages 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 recording / reproducing means 60 engages with the intermediate upper cam portion 85b of the cam groove 85, and one pin 65 of the recording / reproducing means 60 engages with the cam groove 96. Has been done.

As described above, the spindle drive means 7
0 is configured such that the movement of one plate 71, which is a single component, simultaneously acts on the elevation of the lower spindle 41 and the elevation of the recording / reproducing means 60. Therefore, by driving the lower spindle 41 of the disk holding means 30 up and down and the recording / reproducing means 60 up and down by the same plate 71, it is possible to easily match the up / down timing of both, and the recording / reproducing disk being moved up and down. Since it is possible to move up and down without changing the gap between the holding disks of the housing and the storage section, it is possible to prevent the disks from coming into contact with each other while moving up and down.

The lower spindle 41 of the disc holding means 30 and the recording / reproducing means 60 are raised and lowered by the cam groove 7.
By being configured to be driven by the plates 71 and 81 having the numbers 4, 84 and 85, the lower spindle 41 can be moved up and down and the recording / reproducing means 60 can be moved up and down with a simple structure and without timing deviation.

Furthermore, a pair of left and right plates 71 and 81 and an intermediate gear 90 are connected to a part of a common spindle drive means 70 of the lower spindle 41 and the recording / reproducing means 60, and rotate in synchronization with the movement of the plate 71. With the configuration using the cam gear 92, the pitches in the width direction of the pins 65 and 66 provided on the left and right of the recording / reproducing means 60 and the lower spindle 41.
Even when the pitches of the pins 50 and 51 provided on the left and right of the elevating base 42 are different in the width direction, the elevating can be performed with the simple configuration without the timing of the elevating of the both being shifted.

Next, the structure of the horizontal driving means 100 capable of driving the horizontal conveying means 21 and the spindle driving means 70 will be described with reference to FIGS. 11 to 17, FIG. 19 and FIG. That is, the horizontal drive means 100 has a drive gear 101 connected to a drive source via a speed reduction mechanism (which will be described later), and this drive gear 101 is rotatable on a shaft 102 provided upright from the bottom plate 20A side. Installed on. The carrier 27 side of the horizontal transfer means 21 and the tray base 22
A drive rack 103 that is supported and guided by and is relatively slidable in the arrow arrow direction is provided, and the rack 104 of the drive rack 103 is formed on the inner side surface.
It meshes with 01.

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 horizontal conveying means 21 side.

On the front side of the tray base 22, there is a stopper 110 for restricting the sliding of the carrier 27 and the plate 71 in the direction of arrow A, and a carrier lock for preventing the carrier 27 from sliding in the direction of arrow B. 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 through a pin 111, and one arm portion thereof is provided at the front end portion 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 member 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 at the front of the apparatus 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 operating 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 most. 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 front arm portion of the rear lock member 123, a receiving portion 123a is formed which can come into contact with the rear end contact portion 71c provided at the rear end of the plate 71. The lateral arm portion of the rear lock 123 has a contact portion 12 with which a rear end contact portion 27d provided at the rear end of the carrier 27 can abut.
3b is formed. A locking portion 123c is formed at the receiving portion 123a so as to be engageable with and disengageable from the outside with respect to a locking concave portion 27e that is provided at a position near the rear portion of the carrier 27 and is open to the outside. The rear lock 123
Is biased by a spring 125 so that the receiving portion 123a is projected into the movement locus of the rear end contact portion 71c.

The above 101 to 125 constitute one example of the horizontal driving means 100 capable of driving the horizontal conveying means 21 and the spindle driving means 70. According to the horizontal drive means 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 103 is slid in the arrow arrow direction. Then, the horizontal movement means 21 and the spindle drive means 70 are driven by the sliding of the drive rack 103 via the speed increasing gear 106 and the like.

That is, for example, at the time of play shown in FIG. 13A, the carrier 27 is moved to the front end limit, and the abutting portion 27a thereof abuts 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 its 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 spindle drive means 70 is lifted up by sliding one plate 71 to the front end side, so that the lower spindle 41
Also, the recording / reproducing device 62 is raised.

When the disks 1 and 2 which have been recorded and reproduced have been returned to the disk storage position A from such a play, the drive gear 101 is first rotated in the direction of arrow E in FIG. 13B. 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.

The spindle drive means 70 is lowered by the sliding of the one plate 71 in the direction of arrow B, and the lower spindle 41 and the recording / reproducing device 62 are lowered. 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 one plate 71 is stopped by the rear end abutting portion 71c abutting against 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. 14A, 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. Therefore, by sliding one plate 71 in the arrow B direction, the spindle drive means 7 can be moved.
0 is moved up, and thus the lower spindle 41
Then, the recording / reproducing device 62 is raised to reach the stocking time shown in FIG.

In order to operate from the stock time described above to the change time shown in FIG. 15, 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 spindle drive means 70 is lowered, and the lower spindle 41 and the recording / reproducing device 62 are lowered.

In this manner, the lock member 123 is unlocked with the one plate 71 slid in the direction of arrow A and the tip abutting portion 71d of the plate 71 abutting against the receiving portion 110d of the lock member 110 and stopped. The lock tool 123 is rotated in the unlocking direction by the spring 125, so that the lock portion 123 can be rotated relative to the lock recess 27e.
3c is separated to the outside. As the drive rack 103 slides in the direction of arrow A, the speed increasing gear 106 pivotally supported by the drive rack 103 is rotated by meshing the small gear 106B with the fixed upper rack 75.

As a result, the large gear 106 of the speed increasing gear 106
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 arrow A direction, and therefore one plate 71 can be slid in the arrow A direction, so that the spindle drive means 70 can be moved.
Thus, the lower spindle 41 and the recording / reproducing device 62 are raised, and the time of change shown in FIG. 15 is reached.

At the time of closing shown in FIG. 16 (A), one plate 71 is further slid in the direction of arrow A with respect to the time of playing shown in FIG. 13 (A).
As a result, the spindle drive means 70 is lowered, and the lower spindle 41 and the recording / reproducing device 62 are lowered.

When the drive gear 101 is rotated in the direction of the arrow at the time of closing shown in FIG. 16 (A), it can be opened at the time shown in FIG. 16 (B). 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. 16B 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. 16B 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,
The drive of the tray 23 having greatly different operation loads and the drive of both the spindles 31 and 41 and the spindle drive means 70 of the recording / reproducing means 60 are carried out by the gears 106A having the same number of teeth and having two large and small stages.
By freely selecting the module of 106B, 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 spindle driving means 70 and the required speed. it can.

Next, the rotation of the drive source 140 composed of a motor that can be driven in the forward and reverse directions is controlled by rotating the drive gear 10 of the horizontal drive means 100.
1, a structure of a speed reduction mechanism 141 connected to No. 1, a structure of a gear train 149 provided on the side of the horizontal drive means 100, and a vertical drive means 15 provided in a vertical drive system of the spacer 38.
The configuration of No. 1 will be described with reference to FIGS. 19, 20, and 30.

That is, the drive source 140 composed of a motor that can be driven in the forward and reverse directions is fixed to the front side of the apparatus main body 20, the transmission pulley 143 attached to its output shaft 142, 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.

Vertical driving means 151 for the spacer 38
Has a passive gear 152 provided so as to face the cylindrical gear 147, and the passive gear 152 is rotatably provided on the apparatus main body 20 side via a shaft 153. A cylindrical transmission gear 154 is provided on the lower surface side of the passive gear 152.
Is fixed. 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-mentioned 152 to 158 constitute an example of the vertical driving means 151 for 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 the switching gear 1
The configuration of the drive switching means 165 that slides 61 in the axial direction will be described with reference to FIGS. 19, 20, and 30. 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 slidably (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 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 is possible to selectively mesh with either one of the gear trains 151 provided in the elevating and lowering drive system of the spacer 3.

The speed reduction mechanism 141 and the gear train 14 having the above-mentioned structure
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. 31, mode change A is play to change to rise, or play, change to stock and rise mode. Mode B is to change to play, open or stock rise, then change to open mode. Switching C is stock-to-change-up mode switching D is stock-to-change-to-fall mode switching E E is up-to-change to stock-mode switching F is play to change-to-down or 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 the mode switching A, the upper or lower line of the normal or reverse lines of the drive source 140 indicates brake-on, and the lower line indicates 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 not operated 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, while the switching gear 161 is sliding by the drive switching means 165, the switching gear 1
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 speed 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, the switching gear 161 at the time of switching the drive
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 recording / reproducing 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 which 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 disc gap securing means 170 are provided at substantially symmetrical positions with a common center line of the recording / reproducing disc and the storage disc interposed therebetween.

The disk gap securing means 170 is configured to be driven by the spindle driving 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. . A lever-shaped cam follower 175 is provided at the end of the shaft portion 171, 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. According to the disc gap securing means 170, the plate 81 moves to the recording / reproducing position B and the cam follower 175 acts on the cam body 176, so that the lever 172 is retracted against the spring 174. The entry portion 173 is tilted to the position A side, and the entry portion 173 is entered between the adjacent storage disks.

Therefore, as described above, in order to downsize the apparatus, the disk storage position A and the recording / reproduction position B are placed close to each other, and the stored disks 1 and 2 and the recording / reproduction disks 1 and 2 are placed close to each other. Even when the two-dimensionally overlapping positions are provided, the disc gap securing means 170 prevents the gap from narrowing even when vibration or the like acts while entering the gap between the upper and lower storage discs adjacent to the recording / reproducing disc. Therefore, it is possible to prevent the sound skipping and the disc damage due to the contact between the recording / reproducing disc and the storage disc.

Further, by having the lever 172 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 spindle driving means 70, the timing for raising and lowering the lower spindle 41 by the spindle driving means 70, and
The disk gap securing means 170 can be driven without shifting with respect to the timing of the elevation of the recording / reproducing means 60.

Further, by providing the disc gap securing means 170 between the disc storage position A and the recording / reproducing position B, the gap can be secured at a position close to both the disc storage 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 disk is prevented from tilting with respect to the recording / reproducing disk by the left and right entrances 173, the apparatus is prevented from tilting or vibrating. A stable gap can be secured regardless of the mode of action.

Further, since the entrance portion 173 of the disc gap securing means 170 is formed of a plane having an acute-angled joint portion, the disc gap securing means 170 is provided between the two storage discs vertically adjacent to the recording / reproducing disc. When the front end of the disk gap enters, the target can be aimed at the gap between the disks 1 and 2 at a single point, so that a margin can be secured for the positional deviation when the disk gap ensuring means 170 enters. In addition, the contact surfaces of the disks are smooth flat surfaces 173a and 173b.
By doing so, the load of sliding on the end faces of the disks 1 and 2 can be reduced, and it is possible to prevent the disk from being caught in contact with the disk ends.

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 detecting means 18 is constituted by the above 181-189.
An example of 0 is configured. Then, according to the detecting means 180, the one plate 71 has the above-mentioned recording / reproducing position B.
To the first operation cam 185 and the second operation cam 1
86 can turn on the first switch 183 and the second switch 184 at the same time, thereby detecting and controlling the play time by moving to the recording / reproducing position B (see A in FIG. 18). 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. 18 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. 18). 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 performance 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. 32 is also referred to in the description of the operation. In FIG. 32, 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 disc 1 (the same applies to the small-diameter disc 2) on the tray 23, when the open / close key 13 is pressed, the tray base 22 causes the arrow mark to appear. 2) Move to the direction
4, the large-diameter disc 1 is conveyed to the recording / reproducing position B.

Then, the recording / reproducing apparatus 62 is raised by the spindle driving means 70 to clamp the large-diameter disk 1 into a play state (A in FIG. 13, A in FIG. 18, FIG. 2).
5). At this time, the disk gap securing means 170 is
As shown in FIG. 23, the disc is rotated to the disk storage position A side,
We are securing the desired gap. After playing, press the open / close key 13 again and the tray base 22
Moves in the direction of arrow a and is projected as shown in FIG.
As a result, the large-diameter disc 1 can be replaced with respect to the tray 23 or the large-diameter disc 1 can be taken out.

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, by the descending operation of the spindle driving means 70, the recording / reproducing device 62 descends to open the clamp, and the lower spindle 41 descends to form a gap between the lower spindle 41 and the upper spindle 31. , The tray front state is obtained (see FIG. 13B and FIG. 26).

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 A in FIG. 14 and FIG. 27).

Then, the ascending operation of the spindle drive means 70 raises the elevating base 42 and the large-diameter disk 1 is lifted by the tray 23 to be in the stock state (see FIG. 14B, FIG. 18C, and FIG. 28). ). After passing through the switching mode, the disc holding means 3 is passed through the gear train 151.
0 is moved up by one pitch of the spacer, and thus the large-diameter disk 1 is held on the upper spindle 31 side via the spacer 3.

Then, the descending operation of the spindle driving means 70 causes the elevating base 42 to descend to move both spindles 31,
After a gap is generated between the trays 41, the tray 23 is moved in the direction of arrow A with respect to the tray base 22 by the operation of the horizontal driving means 100, the tray 23 returns to the recording / reproducing position B, and the lower spindle descends, It becomes the front state (see FIG. 13B and FIG. 26).

Then, the ascending / descending operation of the spindle drive means 70 causes the ascending / descending base 42 to ascend, so that both the spindles 31,
After the 41 are connected, a change state is established (Fig. 15,
See FIG. 18B, FIG. 22, and FIG. 29). After passing through the switching mode, the disk holding means 30 is rotationally operated via the vertical driving means 151, and the spacer 3 is moved between the spindles 31 and 41 to move the large-diameter disk 1 of interest to the upper spindle 31. To the position where it can be held at the bottom of the side.

Next, the lowering operation of the spindle driving means 70 lowers the elevating base 42 to move both spindles 31,
After the gap is formed between the spindles 41, the tray 23 is moved in the arrow B direction with respect to the tray base 22 by the operation of the horizontal driving means 100, and the empty tray 23 is positioned in the gap between the spindles 31 and 41. (At the time of the tray rear by lowering the lower spindle).

Then, the ascending operation of the spindle driving means 70 causes the elevating base 42 to ascend, so that both spindles 3
1 and 41 are connected and stock state is restored again (Fig. 1
4B, FIG. 18C, and FIG. 28). After passing through the switching mode, the disk holding means 30 is lowered via the vertical drive means 151, and the intended large-diameter disk 1 held on the upper spindle 31 side is transferred onto the tray 23.

Then, the descending operation of the spindle driving means 70 causes the elevating base 42 to descend to move both spindles 31,
After a gap has been created between 41, the horizontal drive means 100 operates to move the tray 23 with respect to the tray base 22 in the direction of arrow A, so that the large-diameter disc 1 on the tray 23 is positioned at the recording / reproducing position B. After that (when the lower spindle is lowered and the tray is in front of the tray), the play state described above is established (see FIG. 13).
A, FIG. 18A, FIG. 23, and FIG. 25).

As described above, the positions of the plurality of spacers 3 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. It is possible to perform a disc change from the recording / reproducing position B, the take-out position and the disc accommodating position A to both the spindles 31 and 41 from above 31, 41, and it is possible to select and record any 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. 31 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 spindle drive means + drive of horizontal 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 action 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 again from horizontal to vertical drive of the spacer (4) Vertical drive in the changed state Ascending or descending 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 1 pitch down in stock state. ． ． 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.

The disk changer, which is an example of the embodiment of the present invention operated as described above, handles the large-diameter disk 1, but it can also handle the small-diameter disk 2 in the same manner. Even if the disc 1 and the small diameter disc 2 are mixed, they can be handled in the same manner.

[0142]

According to the disc changer of the present invention, a spacer is a cylindrical portion having a through hole formed so as to be able to penetrate the spindle and a cylindrical portion having an inclined portion on the outer periphery of the upper end so as to be able to penetrate the center hole of the disc. And a flat plate flat portion formed so as to be able to hold a disk, and two surfaces of a part of the inclined portion, a cylindrical surface substantially perpendicular to the flat plate flat portion and a flat surface substantially parallel to the flat plate flat portion. Since the stacked spacers are supported by the step due to the ring-shaped step formed by the notch, the flat top surface of the spacer can be wide regardless of the size of the gap between the spindle and the spacer. This prevents the discs from sucking in, and prevents the center of the stacked spacers from deviating and stabilizes the seating, even when vibrations are applied to the device. Spacer dropping or by the center deviation of Sa, it is possible to prevent the hanging erect by suction disc spacer failure.

[Brief description of drawings]

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

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

FIG. 3 shows a tray base and a tray of a disc changer 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 changer 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 changer in 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 changer according to the embodiment of the present invention when the lower spindle is raised.

FIG. 7 is a vertical cross-sectional view showing the disc holding means of the disc changer in the embodiment of the present invention when the disc is moved.

FIG. 8 is a vertical cross-sectional view of the main part of the spacer, showing the disk holding means of the disk changer in the embodiment of the present invention.

FIG. 9 is a perspective view of a lower spindle portion showing the disc holding means of the disc changer according to the embodiment of the present invention.

FIG. 10 is a plan view showing spindle driving means of the disc changer according to the embodiment of the present invention.

FIG. 11 shows spindle drive means and horizontal drive means of the disc changer according to the embodiment of the present invention,
Development perspective view of rack and gear

FIG. 12 shows spindle drive means and horizontal drive means of the disc changer according to the embodiment of the present invention,
Transverse plan view of speed increasing gear

FIG. 13 shows a spindle drive means and a horizontal drive means of the disc changer according to the embodiment of the present invention,
A is a side view when playing, B is a side view when the lower spindle is descending

FIG. 14 shows spindle drive means and horizontal drive means of the disc changer according to the embodiment of the present invention,
A is a side view when the tray is rear, B is a side view when the stock

FIG. 15 shows a spindle drive means and a horizontal drive means of the disc changer according to the embodiment of the present invention,
Side view when changing

FIG. 16 shows spindle drive means and horizontal drive means of the disc changer according to the embodiment of the present invention,
A is a side view when closed, B is a side view when open

FIG. 17 shows spindle drive means and horizontal drive means of the disc changer according to the embodiment of the present invention,
Plan view of stopper

FIG. 18 shows a horizontal drive means and a switch arrangement of a disc changer according to an embodiment of the present invention, A is a side view during play, B is a side view during change, and C is a side view during stock.

FIG. 19 is a plan view showing horizontal driving means of the disc changer according to the embodiment of the present invention.

FIG. 20 shows horizontal drive means of the disc changer according to the embodiment of the present invention, A is a developed side view when the disc holding means is switched, and B is a developed side view when the horizontal drive is switched.

FIG. 21 is a plan view showing a disc gap securing means of the disc changer according to the embodiment of the present invention.

FIG. 22 is a side view of the disc changer according to the embodiment of the present invention at the time of OFF showing the disc gap securing means.

FIG. 23 is a side view of the disc changer according to the embodiment of the present invention at the time of turning on, showing the disc gap securing means.

FIG. 24 is a plan view showing a disc exchange operation of the disc changer according to the embodiment of the present invention during play.

FIG. 25 is a side view of the disc changer in the embodiment of the present invention, showing the disc exchanging action, at the time of playing.

FIG. 26 is a side view showing the disc exchange operation of the disc changer according to the embodiment of the present invention when the lower spindle is lowered and the tray is fronted.

FIG. 27 is a side view showing the disc exchanging action of the disc changer according to the embodiment of the present invention when the lower spindle is lowered and the tray is rear.

FIG. 28 is a side view of the disc changer according to the embodiment of the present invention, showing the disc exchange action, at the time of disc stock.

FIG. 29 is a side view of the disc changer according to the embodiment of the present invention, showing the disc exchanging action when the disc is changed.

FIG. 30 is an exploded perspective view of the disc changer according to the embodiment of the present invention.

FIG. 31 is a timing chart of switching modes of the disc changer according to the embodiment of the present invention.

FIG. 32 is a timing chart of each part of the disc changer according to the embodiment of the present invention.

FIG. 33 is a perspective view of a disk changer in a modified example of the related art with an outer case removed.

FIG. 34 is a plan view of a conventional disc changer with an outer case removed, in a modified example.

FIG. 35 shows a disk holding means portion of a disk changer in a conventional improved example, where A is a cross-sectional view of a main part in a plane contact form, and B is a cross-sectional view of a main part in an inclined face contact form.

[Explanation of symbols]

1 large diameter disc 1a Center hole 2 small discs 2a center hole 3 spacers 4 through holes 4Φ Through hole 4 bottom hole diameter 5 slope 6 Cylindrical part 6a Lower inner end part 7 Flat plate part 8 steps 8A cylindrical surface 8B plane 8AΦ Outside diameter of cylindrical surface 8A 8BΦ Flat surface 8B outer diameter 19 Disc changer 20 Device body 21 Horizontal transport means 22 tray base 23 trays 30 disk holding means 31 upper spindle 35 holding claw 41 Lower spindle 42 Lifting base 60 Recording / reproducing means 61 Lifting platform 62 recording / reproducing apparatus 64 disc clamp par 70 Spindle drive means 71 plate 81 plates 87 Connection lever 100 horizontal drive means 140 drive source 141 Reduction mechanism 149 gear train 151 Vertical drive means 165 Drive switching means 170 Disc clearance securing means A disk storage position B Recording / playback position L distance

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Ota 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-10-208361 (JP, A) JP-A-8- 63863 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 17/22-17/30

Claims (2)

(57) [Claims] 1. 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, and a plurality of spacers are provided on a pair of spindles by holding claws. A disc holding means for supporting the disc in a detachable manner, a vertical driving means for vertically driving the spacer to select an arbitrary position of the plurality of discs held by the plurality of spacers, and the holding claw. Spindle drive means for driving and disengaging the plurality of spacers on the upper spindle; horizontal transport means for supporting and transporting the disc by a tray; and recording / reproducing means for recording / reproducing the disc. A spacer is formed so as to be able to penetrate the spindle and a center hole of the disc. A cylindrical surface having an inclined portion on the outer periphery of the upper end thereof, and a flat plate flat portion formed so as to be able to hold the disc, and a cylindrical surface substantially perpendicular to the flat plate flat portion in a part of the inclined portion. And a ring-shaped step formed by notching on two surfaces of a flat surface substantially parallel to the flat plate portion. 2. The disc changer according to claim 1, wherein a diameter of a lower end hole of the through hole is larger than an outer diameter of a cylindrical surface of the step and smaller than an outer diameter of a flat surface portion of the step.