JPH11283311A - Disk player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized and simply constituted disk player without causing an operation sound and unstable operation due to fluctuation in an operation load. SOLUTION: This dish player is provided with a device main body 20, a disk performing means 60 supported freely ascendably and descendably to the device main body 20 in a disk performing position B, an elevating/lowering means 70 elevating and lowering the disk performing means 60 and a friction pressing means 130 changing friction force answering to the operation load change of the means 70 on a part of the means 70. By driving the means 70, the disk performing means 60 is elevated and low ered in the position B. By adjusting the friction force of the friction pressing means 130, the force pressed to the drive is adjusted freely regardless of a drive direction answering to the load fluctuation of the drive of the means 70, and drive force is assisted, and the operation sound is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk playing device such as a disk changer in which a plurality of disks are loaded, and an arbitrary disk is selected from the loaded plurality of disks for recording and 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-trays in a stocker having a plurality of shelves, and the vertical drive means for selecting a position of an arbitrary disk is provided by the stocker, the plurality of sub-trays, and the plurality of disks. Are driven in the vertical direction.

However, in the above-described conventional disk changer, a stocker having a plurality of shelves, a plurality of sub-tray and a plurality of The disk holding means for driving the entire disk is heavy, consumes a large amount of energy in the vertical drive motor, causes problems with finished product dropping and vibration, increases the cost due to the large number of parts, etc. There was a problem.

Therefore, recently, for example, FIGS.
As shown in FIG.
Disk holding means 204 for detachably supporting a plurality of spacers 203 on 01 and 202, and spacers 203 in a vertical direction for selecting an arbitrary position of a plurality of disks 220 held on the plurality of spacers 203. Vertical driving means 205 for driving the holding claw 200, a spindle driving means 206 for driving the holding claw 200 to disengage the plurality of spacers 203 on the upper spindle 201, and the holding claw 20
Horizontal transport means 207 for transporting the disk 220 to the recording / reproducing position X supported by the sub-tray 215 from an arbitrary spacer 203 held at 0 and disk clamping means 208 for clamping the disk 220 to the recording / reproducing position X
Disc changers with the following have been considered.

According to the disk changer having such a configuration, a plurality of spacers 203 and a plurality of disks 220 mounted on both spindles 201 and 202 are provided.
Is driven in the vertical direction so that any disk 220
From the spindles 201, 202, the recording / reproducing position X, the take-out position Z, and again the spindles 201, 20
The disc can be changed to the storage position Y in the disc 2, and an arbitrary disc 220 can be selected for recording and reproduction.
This eliminates the need for a stocker having a plurality of shelves, a plurality of sub-tray, and the like, resulting in a disc changer that is lightweight, inexpensive, and has excellent storage and operability.

[0006]

However, in the above-described disk changer, the disk holding means 2
The drive for raising and lowering the spindle 04 and raising and lowering the disk 220 at the recording / reproducing position X is performed using separate lifting cams 209 and 210, separate coupling mechanisms 211 and 212, lock mechanisms 213 and 214, and the like. Therefore, the apparatus becomes complicated and large, and the load on the lifting cams 209 and 210 when the spindle 202 of the disk holding means 204 and the disk clamp means 208 are simultaneously driven upward and downward is greatly changed.
Problems such as unstable operation due to insufficient driving force at the time of ascending drive, and an increase in operation noise at the time of descending drive have occurred.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and there is no generation of operation sound or unstable operation due to a change in operation load, and a compact and simple disk player. It is to provide.

[0008]

In order to solve the above-mentioned problems, a disk playing apparatus according to the present invention comprises a part of lifting means for raising and lowering the disk playing means, which is provided with friction corresponding to a change in the operating load of the lifting means. It is provided with friction applying means for changing the force.

According to the present invention, the force applied to the drive can be freely adjusted by the frictional force of the frictional force applying means irrespective of the drive direction by the frictional force of the frictional force applying means in accordance with the load variation of the drive of the lifting / lowering means. Assistance and reduction of operation sound can be achieved.

[0010]

According to the first aspect of the present invention, an apparatus main body, a disk playing means supported by the apparatus main body at a disk playing position so as to be able to move up and down, and the disk playing means are moved up and down. A disc playing apparatus, comprising: lifting means; and a frictional force means for changing a frictional force corresponding to a change in the operation load of the lifting means on a part of the lifting means.

According to the present invention, the disk playing means can be raised and lowered at the disk playing position by driving the lifting means. By adjusting the frictional force of the frictional force applying means, it is possible to freely adjust the force applied to the drive irrespective of the drive direction in response to the load fluctuation of the drive of the lifting / lowering means, thereby assisting the drive force and operating noise. Can be reduced.

According to a second aspect of the present invention, there is provided the disk playing device according to the first aspect, wherein the elevating means includes a pair of left and right plates having cam grooves and a connecting lever for connecting the left and right plates. It is composed.

With this configuration, the force generated in the plate moving direction on the left and right plates by the vertical movement can be balanced, and the force generated by the frictional force means can be easily and efficiently transmitted to the vertical means. .

According to a third aspect of the present invention, there is provided the disk playing apparatus according to the second aspect, wherein the frictional force applying means is rotatably supported on a connecting lever and is provided on a main body of the apparatus. And an elastic member suspended between the auxiliary lever and the connecting lever.

With this configuration, a frictional force is generated on the auxiliary lever from the force of the auxiliary lever pressing against the cam wall provided on the apparatus main body. By adjusting the shape of the cam wall provided on the apparatus main body, the amount of expansion and contraction of the elastic member can be adjusted, and the frictional force generated on the auxiliary lever can be easily adjusted. In addition, by adjusting the angle of the cam wall with respect to the moving direction of the connecting lever, the force received by the auxiliary lever from the cam wall (the resultant force including the frictional force) can be used as an assisting force or a suppressing force for driving the connecting lever. Assistance and reduction of operation sound can be easily performed.

Hereinafter, a disc changer according to an embodiment of the present invention will be described 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 or the like. Key 12, open / close key 1
3, a play key 14, a stop key 15, and the like. Reference numeral 16 denotes an outer case for covering the disk playing device 19 of the present invention, and 17 denotes an insulator provided on the bottom plate 11 side. Reference numeral 22 denotes a tray base protruding from the opening 10a of the front panel 10. Reference numeral 23 denotes a tray which is guided by a tray base 22 and is slidable in the direction of the arrow. On the tray 23, the exchanged disks 1 and 2 are supplied.

2, 4, 27, and 28, the apparatus main body 20 includes a bottom plate 20A, left and right side plates 20B and a rear plate 20C. In the device main body 20, a disk storage position A is formed on the rear plate 20C side,
Then, a disk playing position B is formed on the front side. Here, the disks 1 and 2 stored in the disk storage position A
The distance L between the center of the disc 2 and the centers of the discs 1 and 2 played at the disc playing position B is larger than 10 cm (radius of the large disc 1 + radius of the small disc 2) and 1
It is set smaller than 2 cm (diameter of the large-diameter disc 1).

According to this structure, the disk storage position A and the disk playing position B can be brought close to each other so that the stored large-diameter disk 1 and the playing large-diameter disk 1 can be overlapped in a plane. Thus, the size of the device can be reduced. Also, the stored large-diameter disc 1 and the playing small-diameter disc 2 or the stored 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 transport means 21 will be described with reference to FIGS. That is, the device body 2
0, the disk transport means 2 for transporting the disks 1 and 2 between the disk storage position A and the disk playing position B.
1 is provided. The disk transport means 21 is guided by a side plate 20B of the apparatus main body 20 and is slidable in the arrow direction (front-rear direction), and a tray guided by the tray base 22 and slidable in the arrow direction. 23, and a carrier 27 which is supported and guided by the tray base 22 and is slidable in the arrow direction. The tray base 22 protrudes from an opening 10a formed in the front panel 10 by sliding in the direction of arrow A (forward).

On the upper surface side of the tray 23, a 12 cm disk holder 24 and an 8 cm disk holder 25 are formed concentrically. At this time, in order to reduce the height of the spacer (discussed below) of the disc holding means to obtain a thin disc playing device 19, the 12 cm disc holder 2
4 is formed at a position slightly higher than the 8 cm disk holder 25.

The carrier 27 is mounted on the tray base 22.
The carrier 27 has a strip shape, and a rack 28 is formed 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 transport means 21 is constituted by the above 22 to 29 and the like. According to the disk transport means 21, the carrier 27 is moved forward and backward via the rack 28 by forward and reverse driving of a horizontal drive means (described later), so that the tray 23 integrated with the carrier 27 is moved. It is supported and guided by the tray base 22 and is moved integrally. As a result, in the apparatus main body 20, the discs 1 and 2 are moved to the disc storage position A and the disc playing
Can be transferred between

Next, the structure of the disk holding means 30 will be described with reference to FIGS. 2, 5 to 7, 22, 23 and 28. The disk holding means 3 is located at the disk storage position A.
The disk holding means 30 has an upper spindle 31 and a lower spindle 41, which are a pair of upper and lower spindles for detachably holding a plurality of spacers 38. 38, the disks 1 and 2 are transported by the disk transport means 2
It can be exchanged between the two.

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

The upper spindle 31 has a flange 31b at the upper end of an upper spindle body 31a, and an engagement piece 31c formed on the flange 31b is
2 is engaged with the engagement hole 32a formed in the second hole. A disc holder 33 is fitted into the outer peripheral portion of the upper spindle main body 31a.
It is movable along e. This disc holder 33
Disc holding spring 3 provided between the flange 31b
4 urged downward.

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

The holding claw 35 is attached to the spindle mounting plate 32.
Are biased downward by the claw-opening spring 36 provided therebetween, but are prevented from popping out by the pushing portion 31d. The pushing portion 31d is connected to the upper spindle body 31a.
The tip of a push-down piece 48a of the later-described detachment preventing claw 48 abuts.

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

The lower spindle 41 comprises a lower spindle main body 45 comprising an outer cylinder 43 and an inner cylinder 44, a detachment preventing claw 48 fitted in the inner cylinder 44, and the like. The inner cylinder 44 is fitted into a lower shaft 42 a formed on the elevating base 42, and a locking piece 44 a at the lower end is fixed by engaging with the elevating base 42. The outer cylinder 43 has a flange 43a at a lower end,
A ring 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) to form 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 to the male screw 43c. The outer cylinder 43 is attached to the screw portion 46.
A rotation stopper 47 is attached so as not to rotate with the rotation of. One end of the rotation stopper 47 is supported by the screw portion 46, and the other end is supported by the lifting base 42.

The detachment preventing claw 48 includes three claw portions 48b opened outward, three pressing pieces 48a formed between the claw portions 48b and the claw portions 48b, and a lower stopper 48d protruding downward. It is composed of

At the upper part of the inner cylinder 44, three claw holes 44b are formed to allow the tip of the claw portion 48b to protrude and retreat (see FIG. 7). Small holes are formed between the claw holes 44b so that the tips of the pressing pieces 48a protrude. The disengagement preventing claw 48 is pushed upward by a compression spring 49 in the lower shaft 42a, the tip end 48e of the claw portion 48b projects from the claw hole 44b, and the pushing-down piece 48a projects from the small hole. In the center of the upper part of the inner cylinder 44, a convex part 44c that pushes up the holding claw 35 is formed. On the lower side surface of the convex portion 44c, the claw portion 48b is
It is inclined to make it easy to get in and out of 4b.

The left and right sides of the lifting base 42 are provided with outward pins 50 and 51, with one (right) pin 50 and the other (left) pin 51 Two are provided before and after. Reference numeral 52 denotes a vertical feed detection sensor, which is configured to detect a 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 and the like. The disk holding means 30 is operated as follows. That is, FIG. 5 shows a state where five disks 1 and 2 are stored in the lower spindle 41 and the upper spindle 31 and the lower spindle 41 are separated. When the lifting base 42 is raised (in the direction of arrow C) by lifting means (described later), the lifting base 4
The lower spindle 41 attached to 2 also rises.

By raising the lower spindle 41, 120
The three holding claws 35 arranged at an angle of ° and the separation preventing claws 48 are fitted between each other, and the projections 44c abut against the core 35b of the holding claws 35. Further, the convex portion 44
When c pushes up the holding claw 35 while resisting the force of the claw opening spring 36, the tip 35d of the holding claw 35 enters the upper spindle main body 31a. Therefore, the spacer 38
It is moved toward the upper spindle 31 without being hindered by the tip of the claw 35a.

At the same time, the depressing piece 48 of the separation preventing claw 48
a abuts against the pushing portion 31 d of the upper spindle 31.
When the pushing portion 31 d pushes the release preventing claw 48 downward while resisting the force of the compression spring 49, the claw portion 4 of the release preventing claw 48
The distal end portion 48e of 8b retreats into the inner cylinder 44. Therefore, the spacer 38 can move from the lower spindle 41 to the upper spindle 31 (see FIG. 6).

In the above state, 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 required disks 1 and 2 are located at the lower end of the upper spindle 31.

The disks 1, 2 of the upper spindle 31
Can be moved to the lower spindle 41 by rotating the outer cylinder 43 in the reverse direction and lowering the screw portion 46. The moving amount is controlled by counting the number of rotations of the flange 43a integral with the lower spindle 41 by the up-down feed detection sensor 52 and stopping based on the counted number.

Then, the elevating base 42 is lowered (in the direction of arrow D) by the elevating means, and once the upper spindle 3
After separating the lower spindle 41 from the upper spindle 3, the upper spindle 3
The tray 23 is moved between 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 down by the claw opening spring 36, and the tip 35d of the claw 35a jumps out of the outer peripheral wall of the upper spindle 31 and moves to the upper spindle 31. The spacer 38 and the disks 1 and 2 are held. At the same time, the separation preventing claw 48 is pushed upward by the compression spring 49, and the claw portion 35a projects 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 lifting means. In a state where the lower spindle 41 abuts against the upper spindle 31 and the holding state of the holding claw 35 is released, the spacer 38 is driven vertically to drive down one slit (for one rotation of the lower spindle 41), and then drive down.
When the upper spindle 31 and the lower spindle 41 are separated again, the necessary disks 1 and 2 are placed on the tray 23,
It is carried out to the disk playing position B or outside.

Next, the structure of the disk playing means 60 will be described with reference to FIGS. 2, 4, 8, 24, 27-33. In the disc playing position B, the device main body 20
A 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 a lift 61 which can be moved up and down in the direction indicated by the arrow. The recording / reproducing device 62 for the disks 1 and 2 is fitted on the lift 61. At a plurality of locations between the lifting table 61 and the recording / reproducing device 62, buffer springs 63 for urging the recording / reproducing device 62 upward are provided. The upper cover 67 provided between the upper surfaces in the first half of the side plate 20B has a recording / reproducing device
Two disk clampers 64 are supported with a fixed gap. It should be noted that one pin 65, 66 is provided on each of the left and right sides of the elevator 61, respectively.

An example of the disk playing means 60 is constituted by the above-mentioned 61 to 67 and the like. The elevating table 61 of the disk playing means 60 is raised in the direction of arrow C by the elevating means (described later) to separate the disks 1 and 2 from the upper surface of the tray 23. It is configured so that recording and reproduction can be performed by clamping between them.

Next, the construction of the elevating means 70 for elevating the lower spindle 41 and elevating the disc playing means 60 will be described with reference to FIGS. 4, 8, 21, 21 to 24, 27 and 33.

That is, a pair of left and right plates 71 and 81 which are supported and guided by the side plate 20B of the apparatus main body 20 and are slidable in the direction of the arrow are provided in the apparatus main body 20. Protrusions 72 and 82 in opposing directions are integrally connected from ends of the plates 71 and 81 near the rear plate 20C, and these protruding parts 72 and 82 are elongated holes in opposing directions. 73 and 83 are formed.

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

Here, the cam groove 74 of one plate 71
The front upper cam portion 74 extends from the front side to the rear side.
a, V-shaped cam portion 74b, middle upper cam portion 74c, and rear upper cam portion 74d are formed by continuous grooves (FIG. 9,
See FIG. 21). Note that the middle upper cam portion 74c and the front upper cam portion 74a are 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, and have a front upper cam portion 84a, a middle upper cam portion 84b, and a V-shaped cam portion 8.
4c, formed by a continuous groove of the rear upper cam portion 84d (see FIGS. 25 and 26). The front upper cam portion 84a
Is lower than the middle upper cam portion 84b and the rear upper cam portion 84d.

The front cam groove 85 of the other plate 81 is formed by a continuous groove of a front lower cam portion 85a, a middle upper cam portion 85b, and a rear lower cam portion 85c from the front side to the rear side. (See FIGS. 25 and 28).
The cam groove 96 on the cam gear side is formed in a spiral shape (see FIG. 24).

At a position near the rear plate 20C in the apparatus main body 20, a shaft 86 is erected from the bottom plate 20A.
6 is provided with a connecting lever 87 rotatably supported via an intermediate portion thereof. Pins 88 and 89 are erected on both ends of the connecting lever 87, and the pins 88 and 89 are engaged with the long holes 73 and 83. Thereby, the connecting lever 87 rotatably supported by the apparatus main body 20 allows
The pair of left and right plates 71 and 81 are connected, 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 apparatus main body 20 via a shaft 91 erected from the bottom plate 20A side, and further a cam gear meshing with the intermediate gear 90. 92 is provided rotatably via a shaft 93. A cam cylinder 94 is integrated with the lower surface of the cam gear 92. The cam groove 96 is formed in the outer periphery of the cam cylinder 94 so that the pin 65 provided on one side of the disc playing means 60 is engaged.

An example of the lifting / lowering means 70 is constituted by the above 71 to 96. And according to this lifting / lowering means 70,
By transmitting the gear rotating force of the horizontal driving means (described later) to one of the plates 71 via the upper rack 75, the one of the plates 71 is slid in the direction of the arrow and the connecting lever is moved. 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 opposite directions to each other, and the cam gear 92 is rotated in response to the movement of one of the plates 71, so that the cam gear 92 is rotated through the cam grooves 74 and 84. The raising / lowering base 42 of the lower spindle 41 is moved up and down in the direction indicated by the arrow Harni.
6, 85 through the disk playing means 60
It will be raised and lowered in two directions. Note that the cam grooves 74, 8
The formation positions of 4, 96 and 85 and the above-described cam shapes are set so that the timing described later is suitably performed with the movement of the plates 71 and 81.

That is, FIG. 21 (A), FIG. 26, FIG.
In the play shown in FIG. 7, one pin 50 of the elevating base 42 is engaged with the middle upper cam portion 74c of the cam groove 74, and the other pin 51 of the elevating base 42 is engaged with the middle upper cam portion 8 of the cam groove 84.
4b and the other pin 66 of the disc playing means 60.
Is engaged with the middle upper cam portion 85b of the cam groove 85, and one pin 65 of the disc playing means 60 is engaged with the cam groove 96.

When the lower spindle is lowered and the tray is at the front as shown in FIG.
Engages with the V-shaped cam portion 74b of the cam groove 74, and the other pin 51 of the elevating base 42 is connected to the V-shaped cam portion 84 of the cam groove 84.
c, the other pin 66 of the disc playing means 60 is engaged with the rear lower cam portion 85c of the cam groove 85, and the one pin 65 of the disc playing means 60 is engaged with the cam groove 96. Have been.

When the lower spindle is lowered and the tray is at the rear end as shown in FIG. 30, one pin 50 of the lifting base 42 engages with the V-shaped cam portion 74b of the cam groove 74, and the lifting base 42
The other pin 51 is engaged with the V-shaped cam portion 84c of the cam groove 84, the other pin 66 of the disc playing means 60 is engaged with the rear lower cam portion 85c of the cam groove 85, and One pin 65 is set to engage with the cam groove 96.

Also, at the time of disc stock shown in FIGS. 21C and 31, one pin 50 of the elevating base 42 engages the front upper cam portion 74a of the cam groove 74, and the other pin of the elevating base 42. The pin 51 engages the rear upper cam portion 84d of the cam groove 84, the other pin 66 of the disc playing means 60 engages the rear lower cam portion 85c of the cam groove 85, and the one pin 65 of the disc playing means 60. Is set to engage with the cam groove 96.

In the disc change state shown in FIGS. 21B and 32, one pin 50 of the lift base 42 engages with the middle upper cam portion 74c of the cam groove 74, and the lift base 42
The other pin 51 is a middle upper cam portion 84b of the cam groove 84.
, The other pin 66 of the disk playing means 60 is engaged with the middle upper cam portion 85b of the cam groove 85, and the one pin 65 of the disk playing means 60 is engaged with the cam groove 96. ing.

As described above, the elevating means 70 is configured such that the movement of one plate 71, which is a single component, simultaneously affects the elevating of the lower spindle 41 and the elevating of the disk playing means 60. I have. Therefore, the elevation of the lower spindle 41 of the disc holding means 30 and the elevation of the disc playing means 60 are driven by the same plate 71, so that the timings of the two elevations can be easily adjusted. Since it is possible to move up and down without changing the gap between the holding disks in the storage section, it is possible to prevent the disks from being in contact with each other during ascending and descending.

Further, the lifting and lowering of the lower spindle 41 of the disk holding means 30 and the lifting and lowering of the disk playing means 60 are driven by the plates 71 and 81 having the cam grooves 74, 84 and 85. Can be moved up and down and the disk playing means 60 can be moved up and down with a simple configuration without timing shift.

Further, a pair of left and right plates 71 and 81 and an intermediate gear 90 are connected to a part of the common elevating means 70 of the lower spindle 41 and the disc playing means 60, and rotate in synchronization with the movement of the plate 71. Due to the configuration using the cam gear 92, the pitch in the width direction of the pins 65 and 66 provided on the left and right of the disc playing means 60 and the width of the pins 50 and 51 provided on the left and right of the elevating base 42 of the lower spindle 41. Even when the pitch is different, it is possible to perform the ascending and descending with the simple structure without shifting the timing of the ascending and descending.

Next, the structure of the frictional force applying means 130 for changing the frictional force corresponding to the change of the operation load of the elevating means 70 in a part of the elevating means 70 will be described with reference to FIGS. 8, 16 to 20. I do.

That is, the friction applying means 130 has an auxiliary lever 132 rotatably supported on the connecting lever 87 via a vertical pin 131.
A cam follower 133 is formed at the tip of the. Then, the cam wall surface 134 on which the cam follower 133 is moved is
It is formed by the side surface of the cam body 135 from the bottom plate 20A side. At this time, the cam wall surface 134 is formed by a continuous wall surface of the stock cam portion 134a, the neutral cam portion 134b, the play cam portion 134c, and the close cam portion 134d from the front side to the rear side. .

Thus, the auxiliary lever 132 can slide on the cam wall surface 134 in accordance with the shape of the cam grooves 74, 84, 85, 96 of the elevating means 70 in accordance with the rotation of the connecting lever 87. Become.

An elastic member (tension coil spring) 136 is provided between the auxiliary lever 132 and the connecting lever 87 so as to expand and contract in accordance with the rotation of the auxiliary lever 132. One end of the elastic member 136 is held by the locking portion 132a of the auxiliary lever 132, and the other end is held by the locking portion 87a of the connecting lever 87.

At this time, the elastic member 136 is
33 is extended most when it is positioned on the neutral cam portion 134b, and the cam follower 133 is moved to the stock cam portion 1b.
34a or when the cam portion 134c is positioned at the time of play.
a or when it is guided to the left and right inclined surfaces between the cam portions 134c at the time of play. Further, the elastic member 136 is connected to the cam follower 133.
Is configured to extend when positioned at the closed cam portion 134d.

An example of the friction applying means 130 is constituted by the above-mentioned 131 to 136. According to the frictional force applying means 130, the elastic member 136 is contracted when the cam follower 133 is positioned at the play cam portion 134c as shown by the solid lines in FIGS.

Then, the connecting lever 87 is rotated by the driving of the lifting / lowering means 70, and the cam follower 133 moves from the play cam portion 134c shown by the solid line in FIG. 20 to the stock cam portion 134a shown by the phantom line in FIG. 17 and 20, when the cam follower 133 moves on the inclined surface from the play cam portion 134c to the neutral cam portion 134b, as shown in the imaginary lines in FIGS.
Grows gradually. At this time, the direction of the assist is as shown in FIG.
The direction of the cam portion 134c during play is indicated by the arrow in FIG.

Next, as shown by phantom lines H in FIGS. 18 and 20, when the cam follower 133 is located at the neutral cam portion 134b, the elastic member 136 is extended most. 19 and 20, the elastic member 136 gradually contracts when the cam follower 133 moves on the inclined surface from the neutral cam portion 134b to the stock cam portion 134a. At this time, the direction of the assist is
As shown by the arrow in FIG. 19, the direction is the direction of the stock cam portion 134a. Thereafter, as shown by a virtual line in FIG. 20, the cam follower 133 is moved to the stock cam portion 134a, and at this time, the elastic member 136 is further contracted.

As shown by the solid lines in FIGS. 16 and 20, when the cam follower 133 is positioned at the play cam portion 134c, the connection lever 87 is rotated reversely by the driving of the elevating means 70, and the cam follower is driven. When the portion 133 is moved from the playing cam portion 134c shown by the solid line in FIG. 20 to the closing cam portion 134d shown by the imaginary line in FIG. 20, the elastic member 136 gradually expands.

The frictional force applying means 1 having the above configuration and operation.
According to 30, the frictional force of the frictional force applying means 130 is changed because a part of the elevating means 70 for elevating and lowering the disk playing means 60 changes the frictional force in accordance with the change of the operation load of the elevating means 70. By adjusting the force, it is possible to freely adjust the force applied to the drive irrespective of the drive direction according to the load fluctuation of the drive of the lifting / lowering means 70, and to assist the drive force,
In addition, the operation noise can be reduced.

Further, the elevating means 70 is connected to the cam grooves 74 and 8.
By including a pair of left and right plates 71 and 81 having the right and left plates 4 and 85 and a connecting lever 87 for connecting the left and right plates 71 and 81, the left and right plates 7 and 81 are vertically moved.
The force generated in the plate moving direction can be balanced in the plate moving directions 1, 81, and the force generated by the friction applying means 130 can be easily and efficiently transmitted to the elevating means 70.

Further, the friction applying means 130 is rotatably supported on the connecting lever 87 and is
An auxiliary lever 132 that slides while being pressed against a cam wall surface 134 provided on the
With the elastic member 136 suspended between them, a frictional force is generated on the auxiliary lever 132 from the force of the auxiliary lever 132 pressing against the cam wall surface 134 provided on the apparatus main body 20. Therefore, by adjusting the shape of the cam wall surface 134, the amount of expansion and contraction of the elastic member 136 can be adjusted,
The frictional force generated in the auxiliary lever 132 can be easily adjusted. Further, by adjusting the angle of the cam wall surface 134 with respect to the moving direction of the connecting lever 87, the force (the resultant force including the frictional force) that the auxiliary lever 132 receives from the cam wall surface 134
Can be used as an assisting force or a suppressing force for driving the connecting lever 87, and the assisting of the lifting load and the reduction of the operation sound can be easily performed.

Next, the configuration of the horizontal driving means 100 capable of driving the disk transport means 21 and the elevating means 70 will be described.
This will be described with reference to FIGS. 9 to 15, 22, and 33. That is, the horizontal drive unit 100 is a speed reduction mechanism (described later).
And a driving gear 101 connected to a driving source via a shaft 1 which is provided upright from the bottom plate 20A side.
02 is rotatably mounted. A drive rack 103 which is supported and guided by the carrier 27 side of the disk transport means 21 and the tray base 22 and is relatively slidable in the arrow direction is provided. The rack 104 of the drive rack 103 is provided on the inner side surface. The drive gear 101
And are engaged.

At a predetermined position of the drive rack 103, a speed increasing gear 106 is rotatably provided 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 lifting / lowering means 70 side. The large gear 106 </ b> A meshes with the rack 75 and the rack 28 of the carrier 27 provided on the disk transfer means 21 side.

At the front side of the tray base 22, 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 sliding of the carrier 27 in the direction of arrow B. Tool 112 is provided.

That is, the stopper 110 is in the form of an L-shaped lever, and is rotatably provided on the tray base 22 via the pin 111. One arm of the stopper 110 is attached to the front end of the carrier 27. The formed contact portion 27a is formed on the contactable receiving portion 110a. In the other arm portion, a receiving portion 110b with which a tip contact portion 71d formed at the tip of the plate 71 can contact and a locking portion 110c with which the carrier 27 can be engaged are formed. ing.

The locking portion 110c is connected to the carrier 27
When the stopper part 110 is rotated by a predetermined amount around the pin 111 when the contact part 27a is brought into contact with the receiving part 110a, the stopper part 110 engages with the locking concave part 27b formed on the outer surface of the carrier 27. 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 via a pin 113.
A stopper portion 112a that can be engaged with a stopper concave portion 27c formed on the inner side surface of the carrier 27 is formed. The other arm portion is formed on a rotation receiving portion 112b for unlocking.

A common biasing spring 114 for biasing the stopper 110 and the carrier lock 112 is provided between the stopper 110 and the carrier lock 112. Here, the urging spring 114 is disposed so as to urge the stopper 110 in the releasing direction and urge the carrier lock 112 in the engaging direction.

At the front of the apparatus main body 20, an operation tool 115 for rotating the carrier lock tool 112 in the unlocking direction is provided. The operation tool 115 is of a lever type and is rotatably provided on the apparatus main body 20 via a pin 116.

A receiving portion 115a is formed on the first arm portion of the operating tool 115 so that the front contact portion 71a formed on the one plate 71 side can contact. Further, the second arm portion is formed with a rotation operation portion 115b which can abut on the rotation receiving portion 112b for unlocking the carrier lock device 112 from the rear side. A cam pin 115c is formed on the third arm so as to be able to be disengaged from the locking cam groove 22a provided on the lower surface side of the tray base 22 from the lateral direction. The locking cam groove 22a
Is formed in a curved surface along the movement locus of the cam pin 115c.

A spring 117 for urging the operation tool 115 to rotate is provided.
15a is set to shift to the rear side. An intermediate locking member is provided at an intermediate portion of the apparatus main body 20 to prevent one of the plates 71 most moved in the direction of the arrow B from moving in the direction of the arrow B and to limit the movement limit of the tray base 22 in the direction of the arrow B. 120 are provided. The intermediate locking member 120 is of a lever type, and a central portion thereof is rotatably provided on the apparatus main body 20 side via a pin 121.

A receiving portion 120a is formed at the front end of the intermediate locking member 120 so that an intermediate abutting portion 71b provided at an intermediate portion of the plate 71 can abut. A drive cam portion 22b provided at a position near the rear of the tray base 22 is provided at a position near the rear of the intermediate lock device 120.
(See FIG. 3). At the rear end of the intermediate locking member 120, a stopper portion 120c is formed, which can be brought into 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 protrudes into the movement locus of the rear contact portion 71b.

A rear lock device is provided at the rear of the apparatus main body 20 for temporarily receiving one plate 71 moved in the direction of arrow B and locking the carrier 27 when the one plate 71 further moves most in the direction of arrow B. 1
23 are provided. The rear lock 123 is in the form of an L-shaped lever.
It is rotatably provided on the side via a pin 124. A receiving portion 123a is formed at the front end of the front arm portion of the rear lock member 123 so that a rear end contact portion 71c provided at the rear end of the plate 71 can abut. A contact portion 12 is provided on a laterally-facing arm portion of the rear lock device 123 with a rear end contact portion 27d provided at the rear end of the carrier 27.
3b is formed. The receiving portion 123a is provided with a locking portion 123c which is detachable from the outside with respect to a locking concave portion 27e which is provided at a position near the rear of the carrier 27 and which is open to the outside. Note that the rear lock device 123
Is urged by the spring 125 so that the receiving portion 123a protrudes into the movement locus of the rear end contact portion 71c.

An example of the horizontal drive means 100 capable of driving the disk transport means 21 and the elevating means 70 is constituted by 101 to 125 described above. According to the horizontal driving means 100, the driving gear 101 is driven to rotate in the normal and reverse directions by the driving source via the speed reduction mechanism, so that the driving rack 10 is driven.
3 is slid in the arrow direction. And drive rack 1
By the sliding of 03, the disk transport means 21 and the elevating means 70 are driven via the speed increasing gear 106 and the like.

That is, for example, during the play shown in FIG. 11A, the carrier 27 is moved to the front end, and the contact portion 27a is brought into contact with the receiving portion 110a, so that the stopper 110 is urged. The locking portion 110c is engaged with the locking concave portion 27b of the carrier 27 by being rotated against the spring 114. As a result, the position at which the carrier 27 moves to the front end is maintained. In addition, the rotation receiving portion 112b of the carrier lock device 112
Of the urging spring 1 by being in contact with the
14, the stopper portion 112a is detached from the stopper concave portion 27c.

The intermediate lock 120 is rotated against the spring 122 by the drive cam 22b of the tray base 22 acting on the passive cam 120b, and the receiving portion 120a is moved to the rear contact portion. It is located outside the movement locus of 71b. Further, the rear lock device 123 includes a spring 125
, The receiving portion 123a protrudes into the movement locus of the rear end contact portion 71c. The elevating means 70 is raised by one of the plates 71 being slid toward the front end, thereby raising the lower spindle 41 and the recording / reproducing device 62.

When returning the played disks 1 and 2 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. 11B. As a result, the drive rack 103 is slid in the direction of arrow B. At this time, since the carrier 27 is prevented from moving by the stopper 110, the speed increasing gear 106 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-up gear 106
By the rotation of B, one plate 71 slides in the direction of arrow B via the upper rack 75, and the sliding is performed until the rear end contact portion 71c contacts the receiving portion 123a.

By the sliding of one of the plates 71 in the direction of arrow B, the elevating means 70 is lowered, whereby the lower spindle 41 and the recording / reproducing device 6 are moved.
Lower 2 At this time, the speed increasing gear 106 enters a deceleration transmission state, so that the lowering is performed slowly and stably. As described above, the lower spindle descends as shown in FIG.

In a state in which the sliding of one plate 71 is stopped by the rear end contact portion 71c abutting on the receiving portion 123a, the sliding of the drive rack 103 in the direction of arrow B causes the shaft of the drive rack 103 to rotate. Supported speed increasing gear 106
Thus, the small gear 106B meshes with the fixed upper rack 75 and rotates. As a result, as shown in FIG.
, The carrier 27 is slid in the direction of arrow B via the rack 28, and at this time, the stopper 110 is rotated by the urging spring 114, so that the locking portion 110c locks the carrier 27. It is detached from the concave portion 27b.

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

As a result, the plate 71 can be slid in the direction of arrow B. Therefore, when one of the plates 71 is slid in the direction of arrow B, the lifting / lowering means 70 is raised. The lower spindle 41 and the recording / reproducing device 62 are raised, and the stock state shown in FIG.

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

As a result, the small gear 106 of the speed-up gear 106
Due to the rotation of B, one plate 71 is slid in the direction of arrow A via the upper rack 75. As a result, the lifting / lowering means 70 is lowered, whereby the lower spindle 41 and the recording / reproducing device 62 are lowered.

As described above, in the state where one of the plates 71 is slid in the direction of the arrow A and the leading end 71d of the plate 71 comes into contact with the receiving portion 110d of the lock 110 and is stopped, the lock 123 moves in the unlocking direction. The locking member 123 is rotated in the unlocking direction by the spring 125, and the locking portion 12
3c is released outward. When the drive rack 103 slides in the direction of arrow A, the speed increasing gear 106 supported by the drive rack 103 rotates with the small gear 106B meshing with the fixed upper rack 75.

As a result, the large gear 106 of the speed-up gear 106
By the rotation of A, the carrier 27 is sent out through the rack 28 in the direction of the arrow A, and the carrier 27 is accelerated with the movement of the drive rack 103 and slides in the direction of the arrow A. 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 110. The sliding of the carrier 27 causes the tray 23 to slide in the direction of arrow A with respect to the tray base 22. When the contact portion 27a comes into contact with the receiving portion 110a, the stopper 110 is rotated against the urging spring 114, so that the locking portion 110c
Are engaged with the locking recesses 27b of the carrier 27. As a result, the position at which the carrier 27 moves to the front end is maintained. Note that the locking rotation of the stopper 110 causes the receiving portion 110b to move inward with respect to the leading end contact portion 71d of the plate 71.

As a result, the plate 71 can be slid in the direction of arrow a. Therefore, when one of the plates 71 is slid in the direction of arrow a, the lifting / lowering means 70 is moved up. When the spindle 41 and the recording / reproducing device 62 are raised, the change is performed as shown in FIG.

At the time of the closing shown in FIG. 14A, the one plate 71 is further slid in the direction of the arrow a in the play shown in FIG.
As a result, the lifting / lowering means 70 is moved down,
Thus, the lower spindle 41 and the recording / reproducing device 62 are lowered.

When the drive gear 101 is rotated in the direction indicated by the arrow at the time of closing as shown in FIG. 14A, it can be at the time of opening as shown in FIG. 14B. That is, the rotation of the drive gear 101 causes the drive rack 103 to slide in the direction of arrow A, and
The upper rack 7 on the plate 71 stopped in the direction of arrow a in contact with a stopper (not shown) provided at the front of the
5, the small gear 106B meshes with and rotates, and the rotation of the large gear 106A of the speed increasing gear 106 causes the carrier 27 to slide in the direction of arrow a via the rack 28. At this time, the carrier lock member 112 is rotated by the urging spring 114, and the stopper portion 112a is engaged with the stopper concave portion 27c of the carrier 27 as shown in FIG. 14 (B) and FIG. Thus, the carrier 27 is locked. By the action of the carrier lock device 112, the tray base 22 and the tray 23 integrated with the carrier 27 are protruded and moved in the direction of arrow A.

The movement of the tray base 22 and the tray 23 in the direction of arrow B from the open state shown in FIG. 14B to the closed state shown in FIG. It can be performed by rotating in the direction of arrow E.

According to such a horizontal driving means 100,
Driving of the tray 23 having a greatly different operation load and raising and lowering means 7 of the spindles 31 and 41 and the disk playing means 60
0 is driven by two gears 106A, 106 having the same number of teeth and two stages, large and small.
By freely selecting the module B, that is, the pitch circle diameter, the driving force transmitted from the common driving source can be set freely according to the load of the tray 23 and the lifting / lowering means 70 and the required speed. .

Next, the rotation of the drive source 140 composed of a motor which can be driven forward and backward is controlled by the drive gear 10 of the horizontal drive means 100.
1 and 2, the structure of a gear train 149 provided on the horizontal drive means 100 side, the structure of a gear train 151 provided on the vertical drive system of the spacer 38, and the like. 33 will be described with reference to FIG.

That is, a driving source 140 composed of a motor that can be driven forward and reverse is fixed to the front side of the apparatus main body 20, and a transmission pulley 143 attached to its output shaft 142 and a shaft 144 is provided at an intermediate side of the apparatus main body 20. An elastic belt 146 is suspended between the pulley 145 and a passive pulley 145 that is rotatably provided through the elastic belt 146. A cylindrical gear 147 is fixed to the lower surface of the passive pulley 145. An example of the reduction mechanism 141 that connects the rotation of the drive source 140 to the drive gear 101 is configured by the above 142 to 147.

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

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

An example of the gear train 151 provided in the vertical drive system of the spacer 38 is constituted by the above 152 to 158. The second intermediate gear 157 is always meshed 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 that slides the shaft 61 in the axial direction will be described with reference to FIGS. 22, 23, and 33. That is, the switching gear 161 is provided to face all of the cylindrical 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 in the axial direction with respect to the shaft 162 from the apparatus main body 20 side. And the switching gear 16
Reference numeral 1 denotes a large-diameter gear 161A which is always meshed with the cylindrical gear 147, and a small-diameter gear 161B provided on the lower surface of the large-diameter gear 161A. The switching gear 16
1 is configured to be urged downward by a compression spring 163, and to be raised against the compression spring 163 by the retreating movement of the drive switching means 165 composed of a plunger, a lever, and the like.

Further, the switching gear 161 is connected to the drive switching means 1.
When the non-operating gear 65 is lowered by the elastic force of the compression spring 163, the small-diameter gear portion 161B
When the drive switching means 165 is raised by operation against the elastic force of the compression spring 163, the large-diameter gear portion 161A is configured to mesh 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,
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 any one of the gear trains 151 provided in the drive system for raising and lowering the spacer 38.

The speed reducing mechanism 141 and the gear train 14 having the above configuration
9, the gear train 151, the switching gear 161, etc., the forward / reverse drive of the drive source 140 is transmitted to the cylindrical gear 147 via the reduction mechanism 141 having the elastic belt 146, and the cylindrical gear 147 is decelerated. And rotate it forward and backward. While the switching gear 161 is being slid by the drive switching means 165, the switching gear 161 has at least a switching mode including a rotational drive, a stop, and a reverse drive. At this time, the forward / reverse switching mode described above
Is controlled so as to start from reversal with respect to the rotation direction immediately before the start of switching.

That is, in FIG. 29, the mode switching A is ascending after play or change, or ascending after play or changing. Switch C: Change from stock to rise Mode change D: Change from stock to change Mode change E: Change from stock to change from stock to change F G is a change from the change after the descent to the stock mode switching. H is a change from the ascending change to the play and open, or the change from the stock descent to the change and the open.
During the forward / reverse sliding of the switching gear 161 by No. 5, the driving source 140 is controlled to start from the reverse rotation for the forward rotation or to start from the forward rotation for the reverse rotation.

That is, in the mode switching A, for example, in each of the forward rotation and reverse rotation lines of the drive source 140, the higher order indicates brake-on and the lower order indicates brake-off. Therefore, in the M range, the rotation is stopped because both the forward rotation and the reverse rotation are brake-on, and during the sliding of the drive switching means 165, in the N range, the reverse rotation is turned off and the reverse rotation is started, and In the O range, the normal rotation is brake-off and the reverse rotation is brake-on, and the intended normal rotation is performed.

When the switching gear 161 is raised against the elastic force of the compression spring 163 by the operation of the drive switching means 165, as shown in FIG.
7, the large-diameter gear portion 161A meshes with the passive gear 152. Thereby, the switching gear 1
After the completion of the switching sliding of 61, the forward / reverse drive of the drive source 140 is transmitted to the ring gear 43b of the disk holding means 30 via the gear train 151, and rotates this ring gear 43b in the forward / reverse direction.

When the switching gear 161 is lowered by the elastic force of the compression spring 163 while the drive switching means 165 is not operated, as shown in FIG.
61A is disengaged from the passive gear 152,
Then, the small-diameter gear portion 161B meshes with the passive gear 108. Thus, after the switching sliding of the switching gear 161 is completed, the forward / reverse driving of the driving source 140 is transmitted to the driving gear 101 of the horizontal driving unit 100 via the gear train 149, and the driving gear 101 is rotated forward / reverse. .

In such an operation, while the switching gear 161 is being slid by the drive switching means 165, the switching gear 1
A switching gear 16 for switching between two driving systems by having a switching mode including rotation drive, stop, and inversion drive of 61
The meshing of the drive gear 1 into the gear trains 149 and 151 at the time of switching is performed while slightly rotating, stopping and reversing, so that the teeth of the teeth come into contact with each other to slide the switching gear 161. The operation can be reliably performed without hindrance, 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 driving system when the driving of the drive source 140 is stopped, and the switching gear 161 is switched before the switching. Since the load increases when the drive system is disengaged from the teeth of the drive system connected to the motor, repetition of rotation, stop, and inversion works more effectively.

Further, the switching gear 161 at the time of drive switching is used.
The first rotation direction is controlled to start rotating in the direction opposite to the rotation direction immediately before the stop of the drive system connected before the switching, so that the rotation due to the inertia of the drive after the drive is stopped is stopped. Works, the waiting time from the stop of the drive before the switching to the transition to the switching mode can be reduced, and the disk replacement time can be reduced. In the configuration using the elastic belt 146 as described above, the elastic belt 1
This is particularly effective for 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 disk gap securing means 170 is configured to be able to enter between storage disks vertically adjacent to the performance disk. The disk gap securing means 170 is provided between the disk playing position B and the disk storage position A, and includes a shaft portion 171 rotatably supported by the lifting base 42 of the lower spindle 41; The shaft portion 171 is constituted by a lever 172 provided continuously from two places in the left-right direction.

At the distal end portions of both levers 172, there are provided entry portions 173 which can enter between adjacent storage disks, and these entry portions 173 have joints at acute angles.
It is composed of two smooth planes 173a and 173b, and the planes 173a and 173b can directly contact the end surfaces of the upper and lower disks to spread the adjacent disk up and down. Configuration may be used). At this time, the two entry portions 173 of the disk gap securing means 170 are provided at substantially symmetric positions with respect to a common center line of the performance disk and the storage disk.

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 to raise the lever 172 thereof by the spring 174 provided between the lifting base 42 side and to retract the entry portion 173 from between the end faces of the upper and lower disks. . The end of the shaft portion 171 is provided with a lever-like cam follower 17.
5 is provided, and a cam body 176 is provided on the inner surface of the other plate 81.

The above-mentioned 171 to 176 constitute an example of the disk gap securing means 170. Then, according to the disk clearance securing means 170, the plate 81 moves to the disk playing position B, and the cam follower 175
Acts on the cam body 176 to incline the lever 172 toward the disk storage position A against the spring 174, so that the entry portion 173 enters between the adjacent storage disks.

Therefore, as described above, in order to reduce the size of the apparatus, the disk storage position A and the disk playing position B are brought close to each other so that the stored disks 1 and 2 and the playing disks 1 and 2 are Even if the discs are arranged at overlapping positions, the disc gap securing means 170 enters the gap between the upper and lower storage discs adjacent to the performance disc and prevents the gap from being narrowed even when vibration or the like is applied. In addition, it is possible to prevent sound skipping and disc scratches caused by contact between the playing disc and the storage disc.

Further, since the disk gap securing means 170 is provided with the lever 172, the disk gap securing means 170 can be easily positioned, and the gap can be secured stably with a simple configuration. Further, the disk gap securing means 170 is configured to be driven by the lifting / lowering means 70, so that the timing of raising / lowering the lower spindle 41 by the lifting / lowering means 70, the disc playing means 60
The disk gap securing means 170 can be driven without any deviation from the vertical movement timing.

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

Then, the disk gap securing means 170
The entry portion 173 between the adjacent disks is connected to the disks 1, 2
And the storage disk is prevented from being inclined with respect to the performance disk by the left and right entry portions 173.
The gap can be stably secured regardless of the mode of action such as the inclination or vibration of the device.

Further, since the entry portion 173 of the disk gap securing means 170 is formed by a plane having an acute-angled joint, the disc gap securing means 170 is provided between two storage disks vertically adjacent to the playing disk. When the leading edge enters, the gap between the disks 1 and 2 can be aimed at at a single point, so that a margin for positional displacement when the disk gap securing means 170 enters can be secured. Also,
By making the contact surfaces of the discs smooth flat surfaces 173a and 173b, the load of sliding on the end faces of the discs 1 and 2 can be reduced, and it is possible to prevent the discs 1 and 2 from colliding with the disc edges.

Next, the configuration of the detecting means 180 for controlling a part of the control will be described with reference to FIGS. That is, the detection means 180 includes 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 arranged in order from the front side to the rear side.

On one plate 71, there are provided 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 provided by the above-mentioned 181 to 189.
0 is configured. According to the detecting means 180, when one of the plates 71 moves to the above-described playing position, the first operation cam 185 and the second operation cam 186 simultaneously turn on the first switch 183 and the second switch 184. Thus, the play time due to the movement to the performance position can be detected and controlled (see FIG. 21A). Then, when one of the plates 71 moves to the above-described change position, the third operation cam 187 turns on only the first switch 183, thereby detecting and controlling the change time due to the movement to the change position (FIG. 21 B).

Further, when one of the plates 71 is moved to the stock position described above, the fourth operation cam 188 is moved 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 FIG. 21C). When the tray base 22 is opened with the tray base 22 protruding, the fifth operation cam 1
89 turns on only the open switch 182, so that the open time can be detected and controlled.

The operation of the disc playing device 19 according to the embodiment of the present invention configured as described above will be described. In the description of the operation, the timing chart of FIG. 35 is also referred to. In FIG. 35, the drive rack 1
03, one plate 71 (same as the other plate 81), cam gear 92, carrier 27, tray base 2
2, tray 23, lift base 42, lift base 61, first switch 183, second switch 184, open switch 1
82 driving, open, close, play,
The timings of change, lower spindle lower, tray rear, and stock are shown.

FIGS. 1 and 4 show that the drive source 140 is stopped by the open switch 182 after the tray base 22 and the tray 23 are driven by the horizontal drive means 100 and come out of the front panel 10 in the direction of arrow A. It shows the state in which it is operating.

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, and pressing the open / close key 13, the tray base 22 is moved by an arrow. 2
7. As shown in FIG. 29, the large-diameter disc 1 is transported to the disc playing position B.

Next, the recording / reproducing device 6 is
2, the large-diameter disc 1 is clamped to be in a play state (see FIG. 11A, FIG. 16, FIG. 20, FIG. 21A, and FIG. 28). At this time, the disk gap securing means 1
The reference numeral 70 is rotated toward the disk storage position A as shown in FIG. 21 to secure a desired gap. Then, when the open / close key 13 is pressed again after the play, the tray base 22 moves in the direction of arrow A and is protruded as shown in FIG. The diameter disk 1 can be taken out.

After playing as described above, the large-diameter disc 1 on the tray 23 and the large-diameter disc 1 in the disc storage position A
When changing No. A desired key is pressed from the keys 12. Then, the lowering operation of the elevating means 70 lowers the recording / reproducing device 62 to release the clamp, and lowers the lower spindle 41 to form a gap between the lower spindle 41 and the upper spindle 31.
The tray is in the front state (FIG. 11B, FIG. 19, FIG. 2
9).

Subsequently, by operating the horizontal driving means 100, the tray 23 is moved in the direction of arrow B with respect to the tray base 22, so that the large-diameter disc 1 is positioned in the gap between the spindles 31 and 41, and The center of the large-diameter disk 1 and the center of the large-diameter disk 1 are transported to a position where they coincide with the centers of the spindles 31 and 41, whereby the lower spindle descends and enters the tray rear state (see FIGS. 12A and 30).

Next, by the lifting operation of the lifting / lowering means 70,
The elevating base 42 is lifted, and the large-diameter disc 1 is lifted by the tray 23 to be in a stock state (B in FIG. 12).
FIG. 21C and FIG. 31). Then, after passing through the switching mode, the disk holding means 30 is moved up by one pitch of the spacer through the gear train 151, and thus the large-diameter disk 1
Is held on the upper spindle 31 side via a spacer 38.

Next, by the lowering operation of the lifting / lowering means 70,
After the raising / lowering base 42 is lowered and a gap is formed between the spindles 31 and 41, the tray 23 moves in the direction of arrow A with respect to the tray base 22 by the operation of the horizontal driving means 100, and the tray 23 Returning to the disk playing position B, the lower spindle is lowered and the tray is in a front state (see FIG. 11B and FIG. 29).

Next, the lifting base 42 is raised by the lifting operation of the lifting / lowering means 70, so that the two spindles 31 and 41 are connected to each other, and then a change state is established (FIGS. 13, 21B, 25, and 25). 32). After the switching mode, the disk holding means 30 is rotated via the gear train 151, and the spacer 38 is moved between the spindles 31 and 41 so that the target large-diameter disk 1 is moved to the upper spindle 31 side. To the position where it can be held at the bottom of the.

Next, by the lowering operation of the lifting / lowering means 70,
After the raising / lowering base 42 is lowered to form a gap between the spindles 31 and 41, the tray 23 is moved relative to the tray base 22 in the direction of arrow B by the operation of the horizontal drive unit 100, and the spindles 31 and 41 are moved. Empty tray 2 in the gap between 41
3 is positioned (when the lower spindle is lowered and the tray is rear).

Next, by the lifting operation of the lifting / lowering means 70,
The elevating base 42 moves up, the two spindles 31 and 41 are connected to each other, and returns to the stock state (FIG. 12B, FIG. 2).
1C, see FIG. 31). After passing through the switching mode, the disk holding means 30 is lowered via the gear train 151, and the target large-diameter disk 1 held on the spindle 31 side is transferred onto the tray 23.

Next, by the lowering operation of the lifting / lowering means 70,
After the raising / lowering base 42 is lowered to form a gap between the spindles 31 and 41, the tray 23 moves in the direction of arrow A with respect to the tray base 22 by the operation of the horizontal drive unit 100, and After the large-diameter disc 1 is positioned at the disc playing position B (when the lower spindle is lowered and the tray is in front), the above-described play state is established (A in FIG. 11).
16, FIG. 20, FIG. 21A, FIG. 26, FIG. 28).

As described above, the positions of the plurality of spacers 38 and the plurality of large-diameter disks 1 loaded on both the spindles 31 and 41 are driven in the vertical direction, and the arbitrary large-diameter disk 1 is From above the disc playing position B, the take-out position, and both spindles 31 and 4 again.
1 can be changed to the disc storage position A, and an arbitrary large-diameter disc 1 can be selected for recording and reproduction. This eliminates the need for a stocker having a plurality of shelves and a plurality of sub-trays, thereby providing a disc changer that is lightweight and inexpensive and has excellent storage and operability.

During the above operation, a plurality of modes among the modes shown in FIG. 34 are performed. In the disk changer which is an example of the embodiment of the present invention operated as described above, the order of progress of each state at the time of the disk exchange operation is as follows. (1) Horizontal drive in direction B (= drive of lifting / lowering means + drive of disk transport means) "play state" → (change state: straight through) → (spindle open & tray front) → (spindle open & tray rear) → " Stock state. " . Here, the driving is switched from horizontal to vertical driving of the spacer. (2) Vertical drive in the stock state Ascend by one pitch. . . By this operation, the disc on the tray is moved onto the spacer. After one pitch rise, switch to horizontal drive again (3) Horizontal drive in direction a “Stock state” → (spindle open & tray rear) →
(Spindle open & tray front) → "Change state". . Here, the driving is switched from horizontal to vertical driving of the spacer again. (4) Vertical driving in a change state Ascending or descending to a predetermined position. . . Next, the disk to be played is moved to a position where it can be held at the lowermost portion of the upper spindle. After moving the spacer, switch to horizontal drive again. (5) Horizontal drive in direction B "Change state" → (spindle open & tray front)
→ (Spindle open & tray rear) → “Stock state”. . Here, the driving is switched from horizontal to vertical driving of the spacer again. (6) Vertical driving in the stock state. . . By this operation, the disk on the spacer moves onto the tray. After lowering by one pitch, switch to horizontal drive again. (7) Horizontal drive in direction a “Stock state” → (spindle open & tray rear) →
(Spindle open & tray front) → (Change status:
Pass-through) → "play state". . Disc change is over! The above operation shows the procedure for automatically changing the disc being played to another disc stored in the spindle. Various operations, such as selecting a disc to play or opening, can be performed by key operation.

In the disk changer which is an example of the embodiment of the present invention operated as described above, the large-diameter disk 1 is handled, but the small-diameter disk 2 can be handled similarly. Even if the disc 1 and the small-diameter disc 2 are mixed, they can be handled similarly.

[0149]

According to the present invention, there is provided a disk playing apparatus, comprising: an apparatus main body; a disk playing means supported by the apparatus main body at a disk playing position so as to be movable up and down; an elevating means for raising and lowering the disk playing means; With a configuration in which a part of the means is provided with a friction applying means for changing a frictional force in accordance with a change in the operation load of the elevating means, by driving the elevating means, the disk playing means can be raised and lowered at a disk playing position, and By adjusting the frictional force of the frictional force applying means, it is possible to freely adjust the force applied to the drive irrespective of the drive direction in response to the load fluctuation of the drive of the lifting / lowering means, to assist the drive force and to reduce the operation noise. Reduction can be made possible.

[Brief description of the drawings]

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

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

FIG. 3 shows a tray base and a tray of the disk playing device according to the embodiment of the present invention, wherein A is a plan view, B is a longitudinal side view, and C is a longitudinal front view.

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

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

FIG. 7 shows a disk holding means of the disk playing device according to the embodiment of the present invention, and is a perspective view of a lower spindle portion.

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

FIG. 9 is an exploded perspective view showing a rack and a gear portion, showing a lifting unit and a horizontal driving unit of the disk playing device according to the embodiment of the present invention;

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

11A and 11B show the elevating means and the horizontal driving means of the disk playing device according to the embodiment of the present invention, wherein A is a side view at the time of play and B is a side view at the time of lowering the lower spindle.

12A and 12B show a lifting device and a horizontal driving device of the disk playing device according to the embodiment of the present invention, wherein A is a side view at the time of a tray rear, and B is a side view at the time of stocking.

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

14A and 14B show a lifting device and a horizontal driving device of the disk playing device according to the embodiment of the present invention, 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 disk playing device according to the embodiment of the present invention;

FIG. 16 is a plan view of the friction pressurizing means of the disc playing device according to the embodiment of the present invention, showing a play mode.

FIG. 17 is a plan view showing a friction pressurizing unit of the disc playing device according to the embodiment of the present invention, showing a first half of movement from play to stock.

FIG. 18 is a plan view showing a friction pressurizing unit of the disc playing device according to the embodiment of the present invention, showing a neutral state of movement from play to stock.

FIG. 19 is a plan view of the latter half of the movement from the time of play to the time of stock, showing friction pressing means of the disk playing device according to the embodiment of the present invention.

FIG. 20 is a plan view showing a friction pressing unit of the disk playing apparatus according to the embodiment of the present invention and illustrating movement of a cam follower with respect to a cam wall surface.

21 shows horizontal drive means and switch arrangement of the disk playing device according to the embodiment of the present invention, wherein A is a side view at the time of play, B is a side view at the time of change, and C is a side view at the time of stock.

FIG. 22 is a plan view showing horizontal driving means of the disk playing device according to the embodiment of the present invention;

23 shows horizontal driving means of the disk playing device according to the embodiment of the present invention, wherein A is a developed side view when switching to the disk holding means side, and B is a developed side view when switching to the horizontal driving means side. FIG.

FIG. 24 is a plan view showing a disk gap securing means of the disk playing device according to the embodiment of the present invention.

FIG. 25 is a side view of the disc playing device according to the embodiment of the present invention, showing a disc gap securing unit in an off state.

FIG. 26 is a side view of the disc playing device according to the embodiment of the present invention, showing a disc gap securing means when the disc is on.

FIG. 27 is a plan view showing a disk exchange operation of the disk playing device according to the embodiment of the present invention, during play.

FIG. 28 is a side view showing a disc exchanging operation of the disc playing device according to the embodiment of the present invention, during play.

FIG. 29 is a side view of the disk playing device according to the embodiment of the present invention, showing a disk exchange operation, with the lower spindle lowered and the tray at the front.

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

FIG. 31 is a side view showing a disc exchanging operation of the disc playing device according to the embodiment of the present invention, when the disc is stocked;

FIG. 32 is a side view showing a disk changing operation of the disk playing device according to the embodiment of the present invention, and showing a disk change.

FIG. 33 is an exploded perspective view of the disk playing device according to the embodiment of the present invention.

FIG. 34 is a timing chart for switching each mode of the disc player according to the embodiment of the present invention.

FIG. 35 is a timing chart of each part of the disk playing device according to the embodiment of the present invention.

FIG. 36 is a perspective view of a conventional improved example of a disc changer with an outer case removed.

FIG. 37 is a plan view of a modified example of a conventional disk changer with an outer case removed.

FIG. 38 is a side view of a disk holding means portion of a disk changer in a conventional improved example.

[Explanation of symbols]

 1 Large diameter disk 2 Small diameter disk 12 No. Key 13 Open / Close key 14 Play key 15 Stop key 19 Disc playing device 20 Main unit 21 Disc transport means 22 Tray base 23 Tray 24 12 cm disc holder 258 cm disc holder 27 Carrier 28 Rack 30 Disk holding means 31 Upper spindle 38 Spacer 41 Lower spindle 42 Elevating base 50 pins 51 pins 60 Disk playing means 61 Elevating table 62 Recording / reproducing device 65 pins 66 Pins 70 Elevating means 71 Plate (single part) 74 Cam groove 74a Front upper cam part 74b V-shaped Cam portion 74c Middle upper cam portion 74d Rear upper cam portion 75 Upper rack 76 Lower rack 81 Plate 84 Cam groove 84a Front upper cam portion 84b Middle upper cam portion 84c V-shaped cam portion 84d Rear upper cam portion 8 Reference Signs List 5 cam groove 85a front lower cam portion 85b middle upper cam portion 85c rear lower cam portion 87 connecting lever 92 cam gear 96 cam groove 100 horizontal drive means 101 drive gear 103 drive rack 106 speed increasing gear 130 frictional force applying means 132 auxiliary lever 133 cam Followed portion 134 Cam wall surface 135 Cam body 136 Elastic member (tensile coil spring) 140 Drive source 141 Reduction mechanism 147 Cylindrical gear 149 Gear train 151 Gear train 161 Switching gear 165 Drive switching means 170 Disk gap securing means 180 Detecting means A Disk storage Position B Disc playing position

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeshi Ota 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] An apparatus main body; a disk playing means supported by the apparatus main body at a disk playing position so as to be movable up and down; an elevating means for elevating and lowering the disk playing means; and a part of the elevating means comprising the elevating means A frictional force applying means for changing a frictional force in response to a change in the operation load of the disc. A pair of left and right plates slidably supported by the apparatus main body and having a cam groove, and a connecting lever rotatably supported by the apparatus main body and connecting the left and right plates. 2. The disc playing apparatus according to claim 1, wherein the disc playing apparatus includes: 3. The connecting lever is rotatably supported on the connecting lever, and a frictional force applying means is provided on a cam wall formed in the apparatus body corresponding to a cam groove shape of the elevating means. An auxiliary lever that can slide in response to rotation,
3. An elastic member, one end of which is held by the auxiliary lever and the other end of which is held by the connecting lever, the elastic member being held so as to expand and contract in response to the rotation of the auxiliary lever. The disk playing device according to the above.