JP2531641Y2 - Disk ejection position storage device for multi-disc player - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a multi-disc player capable of arbitrarily selecting and playing a plurality of discs stacked vertically in a magazine. An apparatus for storing an ejection position for returning a disk to a step.

(Prior Art) A conventional apparatus counts and electrically stores a gear rotation number, a rotation angle, and the like of an elevating mechanism that rotates according to a disk mounting stage.

(Problems to be Solved by the Invention) However, in this method, the memory is lost when the power switch is turned off during the performance or during the loading / unloading of the disc.

Even if an auxiliary power supply for memory is provided, the memory will be lost after a long time, and such an electrical storage device cannot cope with the problem.

This invention aims to overcome such disadvantages of the prior art devices.

(Means for Solving the Problems) The disk ejection position storage device of the multi-disc player according to the present invention includes a disk tray 6 on which a disk 27 is placed.
A plurality of magazines 8 stacked and stored vertically are mounted on the chassis 5, and a loading arm 46 for transferring the disk tray 6 together with the disk 27 from the storage position to above the playing position is mounted on the loading chassis 19. A slider provided and slidable with respect to the loading chassis 19 only in the transfer direction of the disc tray 6
The hook 59 of the slider 57 is transferred to the disk tray 6 by engaging the loading chassis 19 with the loading arm 19 and moving the loading chassis 19 up and down so that the loading chassis 19 faces one of the tray mounting stages of the magazine 8. In the multi-disc player configured to engage only in the direction, the number of engaging steps C ₁ , C ₂ , C ₃ ,. Engages with one of the engaging pieces 71 provided freely, and one of the engaging steps C ₁ , C ₂ , C ₃ ,. , Is pushed by the slider 57 of the loading arm 46 at the storage position and at a position vertically overlapping the storage position so that the engagement with _{one of} the engagement steps C ₁ , C ₂ , C ₃ ,. A detection piece 74 provided on the loading chassis 19 is provided at the And Luo loading chassis 19 is moved upward in which has a step detection switch S ₃ which is actuated by the engagement piece 71 when the loading chassis 19 to the facing position reaches.

(Operation) When the loading arm 46 is located at the storage position and a position vertically overlapping the storage position, the detection piece 74 is a slider.
Since it is pushed by 57 and disengaged from the above engagement with the engagement piece 71, it does not hinder the vertical movement of the loading chassis 19.

When the loading chassis 19 faces one of the designated tray mounting stages and the slider 57 is displaced from the storage position or a position vertically overlapping the storage position, the pushing motion is lost and the detection piece is biased by a spring. 74 vertically engages with one of the engaging stages C ₁ , C ₂ , C ₃ ,... Corresponding to the designated tray mounting stage, whereby the loading arm 46 is pulled out of the magazine 8. Disc tray 6
Is mechanically stored.

Performance begins to loading chassis 19 ends moves upwards, the loading chassis 19 is returned to the height that matches the specified tray mounting置段, switch S ₃ for stage detected by the engaging piece 71 to operate.

If by stopping the upward movement of the loading chassis 19 on the basis of the actuation of the switch S ₃ for this stage detection, loading chassis to a height that matches the above specified tray mounting置段(original tray mounting置段) Disc 27 because 19 matches
The disk tray 6 can be returned to the original tray mounting stage of the magazine 8 without fail.

Thus, even if the power is turned off for a long time during each operation, the storage of the extraction position is not erased.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

FIGS. 6 and 7 show overall plan views at respective operating positions.
8 and 9 are left and right side views, respectively, of the main parts of FIG. 6, FIG. 10 is a front view of the main parts of FIG. 6, and FIG. 11 is a rear view of the main parts of FIG. Are shown respectively.

The left and right sub-chassis 1 and 2 which are abbreviated when viewed from the front and the front parts of the sub-chassis 3 and the left and right sub-chassis 1 and 2 after being joined and screwed to the rear ends (right side in FIG. 6) of the left and right sub-chassis 1 and 2 A box-shaped chassis 5 is constituted by the front-view-type magazine holder 4 fitted inside and screwed (in the left side in FIG. 6).

The magazine holder 4 can vertically mount a plurality of disk trays 6 vertically (six in the illustrated example, the left and right guides 7, 7).
Form six mounting stages, and each disk tray 6
Is stored slidably back and forth) Magazine 8
Hold detachably along 9,9.

A holder upper plate 10 is provided above the left and right side plates of the magazine holder 4.
Are screwed, and a magazine lock mechanism 11 and a magazine discharge mechanism 12, which will be described later, are assembled to the holder upper plate 10.

At the lower part on the rear side (right side in FIG. 6) of the chassis 5,
The rear bottom plate 13, attached with screws 14, a turntable motor M ₁ having a turntable 15, the optical pickup 17 and the pickup feed motor M _4, an optical pickup feed mechanism 18 (for example a pinion, a rack mainly) and left and right The reference pins 64, 65 are mounted on the upper surface of the rear bottom plate 13.

On the left and right sides of the loading chassis 19, the upper horizontal axis 20
And the lower horizontal shaft 21 is protrudingly provided in the front and rear and left and right, and the lower horizontal shaft 21 is provided with the horizontal holes 22a of the left and right slide plates 22 and 23 located outside the left and right sub-chassis 1 and 2. 23a (horizontal), the upper horizontal axis 20 is the vertical holes 1b, 2b of the left and right sub-chassis 1, 2.
(Vertical) and inclined holes 22b, 2 in left and right slide plates 22, 23
3b (which is inclined with respect to the horizontal and has horizontal portions 22d and 23d at the lowest position), and is located above the rear bottom plate 13.

The loading chassis 19 includes an upper plate 24, a lower plate 25, and guides 26, 26 provided on left and right sides therebetween.

Insert the disc tray 6 with the disc 27 on it into the magazine 8
Guide 26 of loading chassis 19
And a tray moving mechanism 28 having a function of inserting the disk tray 6 into the magazine 8, which is pulled out from the guides 26 or 26, and from the height position (tray insertion / removal position) where the disk tray 6 is pulled out or inserted. When the loading chassis 19 is lowered and the disc 27 reaches a height position (play position) where the disc 27 rides on the turntable 15, the turntable is turned.
A loading unit including a clamp mechanism 29 for clamping the disc 27 to 15 is attached to the loading chassis 19.

The vertical movement of the loading chassis 19 is controlled by the slide plates 22 and 2
3 is guided by the lower horizontal shafts 21 and 21 to move forward or backward, and the lift drive mechanism 31 for moving the slide plates 22 and 23 back and forth is screwed to the lower front side of the chassis 5 with screws 32. It is attached to the upper surface of the attached front bottom plate 33.

The front bottom plate 33 and the rear bottom plate 13 substantially close the lower part of the chassis 5 and reinforce the framework of the chassis 5.

Next, the structure of each of the above mechanisms, such as the lift drive mechanism 31, will be described.

 The lift drive mechanism 31 is shown in a perspective view in FIG.

The illustrated lift drive mechanism 31 supports a semi-circular large-diameter gear 35 that always meshes with a rack 34 attached to the lower part of the slide plates 22 and 23, and a shaft 36 to the front bottom plate 33, engaging with the pinion 37 to the gear 35, worm 38 and worm wheel 39 and, via the belt transmission mechanism 40, and driven by a lift motor M _2.

When the gear 35 is rotated, for example, in the direction of the arrow in FIGS. 6 and 12, the slide plate 22 moves backward (moves to the right in FIGS. 6 and 8),
The slide plate 23 moves forward (moves leftward in FIGS. 6 and 9), and the loading chassis 19 rises.

When the horizontal axis 20 is located at the entrance of the horizontal portions 22d, 23d of the inclined holes 22b, 23b, it is in the playing position (FIGS. 6, 8, and 9), and is located at the back of the horizontal portions 22d, 23d. When it is located, it is the magazine attaching / detaching position (FIG. 7).

The height position control unit 42 that controls the loading chassis 19 to the respective height positions of the tray loading / unloading position and the playing position (magazine detaching position) will be described as an example.

That is, the fan-shaped shutter 44 having the slits l ₁ ,... L ₆ , H, E and the cam 43 corresponding to the respective positions is attached to the gear 35,
Slit l _1, the optical sensor PH ₁ for detecting the ... presence of the cam 4
3 of the small-diameter portion 43a and the example-off operation, the large diameter portion of the optical sensor PH ₁ is formed in a range capable of detecting slits l ₁ to l ₆
Switch S ₁ to ON operation in 43 b (e.g. Micro)
And an input key K for manually inputting an operation to each of the above positions, and a control unit CPU including a microcomputer (see FIG. 13).

Power switch P is turned on and instructs the performance of the disk 27 in the second stage input key K from the bottom for example, gear 35 and the lift motor M ₂ are stopped at the playing position as the initial position (FIG. 6) is since the switch S ₁ is off the small-diameter portion 43a, to rise the rotation of the arrow by the movement of the slide plates 22 and 23, the loading chassis 19 is moved upward.

Switch S ₁ is turned on enter the large-diameter portion 43 b, which subsequent slits l _1, l ₂ ... number of counts in the control unit CPU,
When the second counting is performed, that is, the optical sensor PH ₁
There when detecting a slit l _2, the lift motor M ₂ out command of the control unit CPU stops, the loading chassis 19
The upper surface of the guide 26 is substantially the same height as the second stage from the bottom of the magazine 8.

The tray moving mechanism 28 is located at the tray insertion position, and a disc ejection position storage device 45 described later stores the ejection position of the second stage from the bottom.

When the motor M ₂ stops lift, command starts rotating movement motor M ₃ of the tray moving mechanism 28 is in the pull-out direction by the control unit CPU, pull the disc tray 6 of the second stage in the magazine 8, the turntable 15 When the disc tray 6 reaches just above the switch S ₂ by the loading arm 46.
Movement motor M ₃ and (Micro) is actuated to stop.

According to an instruction from the control unit CPU, the lift motor M ₂ rotates the shutter 44 rotates in the lowering direction in Han'ya line direction, with the movement of the slide plates 22 and 23, the loading chassis 19 is moved downward, the switch Setsu換Ri S ₁ is from on the large diameter portion 43b off of the small diameter portion 43a, the lifting motor M ₂ when the optical sensor PH ₁ the first slit H is detected stops, playing position the loading chassis 19 be stopped Thus, the disk 27 on the disk tray 6 is transferred to the turntable 15, and the disk 27 is clamped by the clamp mechanism 29.

Then, to rotate the turntable motor M ₁ is according to the instruction of the control unit CPU, recording and by the optical pickup 17, the feed operation by the optical pickup feed mechanism 18 is made, play is performed.

When the performance is completed, the lift motor M
₂ rotates in the ascending direction, and immediately before the guide 26 of the loading chassis 19 becomes substantially the same height as the second stage from the bottom of the magazine 8 again, the switch S of the disk ejection position storage device 45 is turned on.
₃ Lift motor M ₂ by (Micro) operates so to speak in a stopped waiting state, the immediately slits l ₂ photosensor PH
Lift motor M ₂ when ₁ is detected stops.

According to an instruction from the control unit CPU, moving motor M ₃ are rotated in the direction of insertion, the magazine toward the second stage 6 the disc tray 6 starts to insertion, the switch S ₄ by the loading arm 46 at a position where the insertion ends ( movement motor M ₃ micro) is operated is stopped.

If there is a disc 27 in the disc tray 6 taken out from the magazine 6 onto the loading chassis 19, the rear bottom plate
Photosensor PH ₂ which is attached to the 13 turned on by the reflection light from the disk 27 through the hole 6e in the disc tray 6.

An example of the tray moving mechanism 28 is shown in a perspective view in FIG.

A gear portion 52, an arc hole 53, and front and rear switch pieces 54, 55 are formed on a loading arm 46 that is supported by a fulcrum shaft 51 on the upper plate 24 of the loading chassis 19, and the loading arm 46 rotates. The groove 57a of the slider 57 is movably engaged in the left and right directions with the pin 56 attached to the tip, and the lower part of the slider 57 is inserted into the long hole 24a provided in the front and rear direction on the upper plate 24, and attached to the slider 57. Balls 58, 58 are in sliding contact with the elongated holes 24a.

The hook 59 formed on the slider 57 is accommodated in the magazine 8 inserted into the magazine holder 4 and the hook holes 8a, 6a of the respective disc trays 6 at the time of the tray storage position shown in FIG. When the above-described vertical movement occurs, the hook 59 also moves up and down without contacting the hook holes 8a, 6a, and when the loading chassis 19 is substantially at the same height as the selected one of the above-mentioned respective stages of the magazine 8, the hook 59 is engaged with the hook hole 6a of the disc tray 6 on the mounting stage and the slider 57 moves back and forth to perform the pulling-out operation or the inserting operation of the disc tray 6, and the loading chassis 19 is attached to and detached from the lowest magazine. position when in (photosensor PH ₁ slit E is the position of Figure 7 to detect), the hook 5
Reference numeral 9 denotes a structure located below the hook hole 8a on the bottom side of the magazine 8 so that the hook 59 does not hinder the attachment and detachment of the magazine 8.

Loading arm 46, between the tray pull-out position of the switch piece 54 is activated the tray storage position and the switch piece 55 the switch S ₂ on the rear side is to operate the front side of the switch S _4,
It reciprocates.

The reciprocating operation of the loading arm 46 is performed by moving the pinion 60 meshing with the gear portion 52 to the moving motor M ₃ mounted on the upper plate 24.
And a belt transmission mechanism 61 and a gear transmission mechanism 62 (both supported on the upper plate 24). Smooth reciprocating movement of 46.

Next, the disk ejection position storage device 45 which is a feature of the present invention will be described in detail.

The disc tray 8 and the disc 27 taken out of the magazine 6 are returned to the guide 7 of the original stage of the magazine 6 after playing, so that the disc ejection position is set to the shutter 44.
The control unit CPU counts and stores the number of detections of the slits l _{1 to} l ₆ of the disk, and configures the disk unloading position storage device so as to control the rotation of the gear 35 by this stored value prior to insertion into the magazine 6. However, even if the power switch P is turned off during a performance or loading operation and an auxiliary power supply for memory is provided, if the extraction position memory disappears after a long time, such an electric storage device can handle the problem. Can not.

FIGS. 1, 3, and 4 are side views of respective operation position islands of the mechanically configured disk ejection position storage device 45 for solving such a problem, and FIGS. Each is shown in FIG.

Guide pieces 71a of the engaging piece 71 of the engaging step C ₁ -C ₆ equal to the number of stages of the magazine 8 is provided in the vertical direction, the 71a, is loosely fitted to the vertical pin 72 attached to the left and right sub-chassis 2, the engaging piece The inner guide piece 71b and the outer guide piece 71c of the right and left sub-chassis 2
The inner guide piece 71b and the outer guide piece 71c into the hole 2a of the left and right sub-chassis 2 so as to penetrate between the engagement piece 71 and the left and right sub-chassis 2. the bundled 73, the connecting portion uppermost position corresponding within the upper end of the hole 2a (Figure 1, Figure 3) engaging piece 71 is stopped, the left and right switches S ₃ for stage detection mounted on the sub chassis 2 , The uppermost engaging piece 71 is turned on.

An intermediate portion of the detection piece 74 in which the engaging portion 74a and the pressing portion 74b are formed in the front and rear direction is pivotally supported to the upper plate 24 by the vertical pin 75,
By a coil spring 77 having both ends locked to a stopper 76 and a detection piece 74 protruding from the upper plate 24, the pressing portion 74b pivotally urges the detection piece 74 in a direction approaching the elongated hole 24a, and the stopper 76 At the position where the detection piece 74 hits (FIGS. 6 and 5), the pushing portion 74b
7 with protruding in the movement locus of, such that a portion of the engagement portion 74a overlaps the engagement step C ₁ -C ₆ in a plan view, also, the slider 57
2 and 7, the pushing portion 74b is pushed by the slider 57, and the detecting piece 74 is pushed by the slider 57 to a position where the overlapping of the engaging portion 74a is eliminated. Rotates.

Therefore, for example, the loading chassis 19 is
When the loading arm 46 is located at the tray storage position, the engaging portion 74a of the detection piece 74 is located at the second stage from below the engagement piece 71, and the loading arm 46 is positioned at the tray storage position. The engagement piece 74a of the detection piece 74
Are not engaged with the _second engagement step C2 from the bottom, but are at positions facing each other (FIGS. 2 and 7).

Next, when the loading arm 46 rotates backward and starts to pull out the second-stage disc tray 6, and the slider 57 separates from the pushing portion 74b, the detecting piece 74 rotates and the engaging portion 74a engages. It engages the stage C _2.

Disc tray 6 is completely transferred to the loading chassis 19, the engagement piece is engaged with the low dengue chassis 19 and the engagement step C ₂ by the operation of the lift drive mechanism 31 71
Also move down to reach the playing position (FIG. 4), and when the playing ends, the loading chassis 19 rises.

The engagement piece 71 engaged with the detection piece 74 also moves upward integrally, and immediately before the loading chassis 19 becomes substantially the same height as the second step from the bottom of the magazine 8, the engagement piece 71 is switched to a step detection switch. S ₃
It operates the (FIG. 3), lift motor by a command of the optical sensor PH ₁ is detected by the control unit CPU slits l ₂ immediately thereafter
M ₂ is stopped, the upper surface of the guide 26 of the loading chassis 19 is stopped in a substantially same height as the second stage of the magazine 8.

The loading arm 46 pivots forward, the hook 59 inserts the disc tray 6 into the second stage of the magazine 8, the slider 57 pushes the pushing portion 74b, and the detecting piece 74 pivots left in FIG. disengaged from the engaging step C _2, the loading chassis 19 waits back to playing position.

Thus, since the disk unloading position is stored by the mechanical component made of the detection piece 74 and the engaging piece 71 and the switch S ₃ for stage detection, even when the power is turned off by playing the course or the like, the next power-on Thereafter, the disc tray 6 can be correctly inserted into the original take-out stage.

The illustrated magazine lock mechanism 11 and magazine discharge mechanism 12 will be outlined. When the magazine 8 is inserted, the front end of the magazine 8 pushes the ejection slider 97 rearward, and the cam pin 98 also moves backward, and when the end of the entrance 91a of the cam groove 91 is near the end, the front end of the magazine 8 is locked. Passing inside the claw 81,
When the cam pin 98 enters the inner part 91b of the cam groove 91, the engagement groove 84 of the lock arm 85 reaches the position where the detection arm 94 can be slightly separated from the engagement pin 89 of the detection arm 94. The detection arm 94 is released, and the lock arm 85 is slightly rotated leftward by the spring 88 so that the lock claw 81 contacts the left side surface 8b of the magazine 8.

Locking pawl 81 in the left portion of the lock anti 8c is fitted in reaches the insertion completion position the magazine 8, the magazine 8 engages is locked, the switch piece 83 will switch off away from the operating piece of the switch S _5, the discharge The spring 99 is fully extended.

The ejection key J is operated to remove the magazine 8 from the magazine holder 4.

First, if the disk tray 6 has been pulled out, the tray moving mechanism 28 operates to return the disk tray 6 to the original stage of the magazine 8.

Next, the loading chassis 19 is lowered lift driving mechanism 31 is operated, the switch S ₁ is turned off, when the second slit E photosensor PH ₁ detects, lift driving mechanism 3
1 is stopped and the loading chassis 19 is at the magazine discharge position (the same height as the playing position).

When the lift moving mechanism 31 moves to the magazine discharge position, the left slide plate 22 moves further forward than the playing position, and the operating portion 82 of the lock arm 85 is pushed right inward by the pushing portion 22c to lock. Arm 85 turns clockwise 81
Is removed from the lock hole 8c of the magazine 8.

Thus the magazine 8 is discharged pushed from the magazine holder 4 to the discharge slider 97 which is biased to a discharge spring 99, the switch piece 83 is switched on by pressing the switch S _5.

Next was the lift drive mechanism 31 to increase the loading chassis 19, one sputum switch S ₁ is lowered to the loading chassis 19 is switched on, the optical sensor PH ₁ 1
When the second slit H is detected, the loading chassis 19 is detected.
Stops at the playing position.

The illustrated clamping mechanism 29 includes the loading chassis 19
Are in their respective tray loading and unloading positions.
As a result, the disc clamper 121 comes into contact with the stopper 24e of the upper plate 24 to be in the non-clamp position, and the loading chassis
When 19 descends to the playing position, the operating screw is
The disc clamper 121 moves downward with the 129 pushed up, and the disc 27 is clamped by the turntable 15 and the disc clamper 121.

 Next, the operation will be described.

When the magazine 8 is inserted into the magazine holder 4, the magazine lock mechanism 11 is operated, the lock claws 81 are engaged with the lock holes 8c, the magazine 8 is locked, and the tray lock release arm 10
Lock claw 111 by 5 disc tray 6 deviates from the locking recess 6b is unlocked, the discharge slider 97 is discharged spring 99 is pushed rearward stretched, the switch S ₅ is switched off.

When the power switch P is turned on, if there is a disk tray 6 that has been removed, the lift drive mechanism 31 operates by the disk removal position storage device 45 to move the disk tray 6 together with the loading chassis 19 to the original stage of the magazine 8. Align the disc tray 6 with the tray moving mechanism 28.
Into the original column.

The lift drive mechanism 31 lowers the loading chassis 19 and waits at the playing position (FIG. 15).

The input key K, the number of stages in the magazine 8 of the disk 27 to be played is input to the control unit CPU, the loading chassis 19 is raised lift driving mechanism 31 is operated, slit l ₁ by the optical sensor PH _1, l ₂ ... is detected number count of the loading chassis 19 when the count number n is equal to the input number n is stopped.

The tray moving mechanism 28 operates and the slider 57 starts to transfer the disk tray 6 to the loading chassis 19.

Detecting piece 74 when the slider 57 is disengaged from portion 74a of the disk take-out position storage device 45 is engaged with one of the engagement step C ₁ -C ₆ the number of which is equal to the input number n.

Lift driving mechanism 31 when the transfer is complete is to lower the loading chassis 19, the engagement piece 71 is also moved downward together with the detecting piece 74, the optical sensor PH ₁ is first I switched off the switch S ₁ on the slit H Is detected, the lift drive mechanism 31 stops,
The loading chassis 19 reaches the playing position, the reference holes 6c and 6d of the disc tray 6 are fitted with reference pins 64 and 65 (standing on the rear bottom plate 13), and the disc tray 6 is supported.
27 gets on the turntable 15.

Immediately before stopping at this playing position, the operating screw 129 is pushed up by the operating piece 3a, the disc clamper 121 starts to descend, and the disc 27 is pressed against the turntable 15 at the playing position,
Clamped.

If the disc 27 is not in the disc tray 6 at the level indicated by the input key K, when the disc tray 6 has been substantially transferred to the loading chassis 19, the disc tray 6 is positioned below the disc tray 6. incident light photosensor PH ₂ is simply passed through the hole 6e in the disc tray 6 photosensor PH ₂
No reflected light is incident on the disc tray 6, and the disc tray 6 is returned to the original stage of the magazine 8 by the command of the control unit CPU, and then the loading chassis 19 is lowered to the playing position and stands by (FIGS. 16 and 17). ).

At the end of the clamp, the turntable motor M ₁ and the pickup feed motor M ₄ are driven by a command from the control unit CPU, and the performance starts.

 When the performance is over, the device stops and waits for the next command.

FIG. 17 shows the flow when the performance is over and the next disk 27 is instructed, and FIG. 20 shows the timing.

When a new stage number (for example, the second stage from the bottom) is designated by the input key K, the loading chassis 19 is raised (from the previous playing position), and the detection piece 74 is also raised to just before the original stage is matched. in turn on the switch S ₃ for stage detection operation, the lift motor M ₂ when the optical sensor PH ₁ detects the one slit l ₁ to l ₆ in immediately stops.

The tray moving mechanism 28 operates to insert the disc tray 6 back into the magazine 8 at, for example, the third stage, and the moving motor M ₃
Stops.

The control unit CPU compares the previous input stage number N with the current new input stage number N. If the new input stage number N is smaller, the loading chassis 19 is lowered, and conversely, if the new input stage number N is larger. to rise, the rotational direction of the lift motor M ₂ is controlled.

When these up and down of loading chassis 19 start,
As described above, slits l _1, l ₂ by the optical sensor PH _1, ...
, The loading chassis 19 is stopped at a predetermined height, the disc tray 6 is taken out, the disc taking-out position is stored, the playing position is lowered, and the playing operation is performed.

FIG. 18 shows the flow of the operation of discharging the magazine 8 (when the disc tray 6 is present on the loading chassis 19).

When the ejection key J is operated, the above-described series of operations for returning and inserting the disc tray 6 on the loading chassis 19 to the original stage of the magazine 8 is performed by the operation of the disc ejection position storage device 45, and then the lift motor M ₂ slide plates 22 and 23 is lowered to move to the discharge position past the playing position, the lift drive mechanism 31 when the optical sensor PH ₁ the second slit E is detected is stopped.

When the pushing portion 22c of the slide plate 22 pushes the operating portion 82 of the lock arm 85 inward with the movement to the discharge position and the lock claw 81 is disengaged from the lock hole 8c, the magazine 8 is discharged by the restoring force of the discharge spring 99. The tray lock arm 110 which is pushed by the slider 97 and ejected from the magazine holder 4 and comes off the tray unlocking arm 105 locks the disc tray 6 to the magazine 8.

When the lock arm 85 is returned to rotate the switch S ₅ is turned on to rotate the motor M ₂ one sputum upward lift, lift this ON operation of the switch S ₁ to ON in slightly higher position than the playing position motor M ₂ is inverted rotated in the down direction, the first slit H is stopped at a playing position where the light sensor PH ₁ detects, will wait even loading chassis 19 in this position.

When there is no disc tray 6 on the loading chassis 19, there is no reinsertion process of the disc tray 6, so that the loading chassis 19 at the playing position does not move at all and the unlocking operation is performed immediately after the gear 35 rotates a little. Is carried out, and the magazine discharge becomes extremely quick.

(Effect of the Invention) Since the disk ejection position storage device of the multi-disc player according to the invention is configured as described above, when the loading arm 46 is located at the storage position and at a position vertically overlapping the storage position, the detection piece is detected. 74 is pushed by the slider 57 and disengaged from the engagement with the engagement piece 71, so that the vertical movement of the loading chassis 19 is performed without any trouble.

When the loading chassis 19 faces one of the designated tray mounting stages and the slider 57 is displaced from the storage position or a position vertically overlapping the storage position, the pushing motion is lost and the detection piece is biased by a spring. 74 vertically engages with one of the engaging stages C ₁ , C ₂ , C ₃ ,... Corresponding to the designated tray mounting stage, whereby the loading arm 46 is pulled out of the magazine 8. Disc tray 6
Is mechanically stored.

Performance begins to loading chassis 19 ends moves upwards, the loading chassis 19 is returned to the height that matches the specified tray mounting置段, switch S ₃ for stage detected by the engaging piece 71 to operate.

In this way, since the disc removal position is memorized mechanically, even if the power is turned off for a long time during a performance, during the removal or insertion of a disc, etc., the memory does not disappear and the disc is securely placed on the original mounting stage. Can be inserted back.

As described above, the number of components is small, the structure is simple, and it can be implemented at low cost.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1, FIG. 3, and FIG. 4 are side views of respective operation states of a disk ejection position storage device, FIG. 2 is a plan view of FIG. 6 is a plan view of FIG. 4, FIGS. 6 and 7 are plan views of a main part of the multi-disc player, FIGS. 8 and 9 are left and right side views of FIG. 6, and FIGS. 11 is a front view and a rear view of a main part of FIG. 6, respectively. FIG. 12 is a perspective view of a lift drive mechanism, FIG. 13 is a control circuit diagram, FIG. 14 is a perspective view of a tray moving mechanism, and FIG. Figure 15,
FIG. 16, FIG. 17, and FIG. 18 are flowcharts, and FIG. 19 is a timing chart. 1 ... left and right sub-chassis, 1a ... cutout hole, 1b ... vertical hole,
2 ... left and right sub-chassis, 2a ... hole, 2b ... vertical hole, 3 ...
... Rear sub-chassis, 3a ... Working piece, 4 ... Magazine holder, 4a ... Left plate, 5 ... Chassis, 6 ... Disc tray, 6a ... Hook hole, 6b ... Lock recess, 6c, 6d ... …
Reference hole, 6e: Hole, 7: Guide, 8: Magazine, 8a
…… Hook hole, 8b …… Left side, 8c …… Lock hole, 8d ……
Long groove, 9 ... Protrusion, 10 ... Holder upper plate, 10a, 10b ... Long hole, 11 ... Magazine lock mechanism, 12 ... Magazine discharge mechanism, 13 ... Rear bottom plate, 14 ... Screw, 15 ... ... turntable, 17 ... optical pickup, 18 ... optical pickup feed mechanism, 19 ... loading chassis, 20, 21 ... ... horizontal axis, 2
2 ... Slide plate, 22a ... Horizontal hole, 22b ... Slope hole, 22c ...
… Pressing part, 22d… Horizontal part, 23… Slide plate, 23a horizontal hole, 23b …… Slope hole, 23d …… Horizontal part, 24 …… Top plate, 24b
... holes, 25 ... lower plate, 26 ... guides, 27 ... disks,
28: Tray moving mechanism, 29: Clamp mechanism, 31: Lift drive mechanism, 32: Screw, 33: Front bottom plate, 34: Rack, 35: Gear, 36: Shaft, 37 ... Pinion, 38 ……
Worm, 39: Worm wheel, 40: Belt transmission mechanism, 42: Height position control unit, 43: Cam, 43a: Small diameter part, 43b: Large diameter part, 44: Shutter, 45 ... Disk ejection position storage device, 46 ... Loading arm, 51 ...
... fulcrum shaft, 52 ... gear part, 53 ... arc hole, 54, 55 ... switch piece, 56 ... pin, 57 ... slider, 57a ... groove, 5
8… ball, 59… hook, 60… pinion, 61…
Belt transmission mechanism, 62 gear transmission mechanism, 63 guide pin, 64, 65 reference pin, 71 engaging piece, 71a guide piece, 71b inner guide piece, 71c outer guide Piece, 72 ...
… Vertical pin, 73… Spring, 74… Detection piece, 74a… Engagement part, 74b… Pushing part, 75… Vertical pin, 76… Stopper, 7
7 ... winding spring, 81 ... lock claw, 82 ... operating part, 83 ...
... switch piece, 84 ... engagement groove, 85 ... lock arm, 86
… Fulcrum pin, 87… hook, 88… spring, 89… engagement pin, 90… lock lock arm side, 91… cam groove,
91a ... entrance, 91b ... back, 92 ... cam arm, 93 ...
... Guide hole, 94 ... Detection arm, 95 ... Support point pin, 96 ...
… Pin, 97 …… discharge slider, 97a …… guide part, 97b
…… Guide, 97c …… Contact piece, 98… Cam pin, 99…
… Discharge spring, 100… Rack, 101… Discharge damper,
102: Pinion, 103: Release unit, 104: Actuator, 105
… Tray release arm, 106… fulcrum pin, 107… spring, 108… stopper, 109… fulcrum pin, 110… tray lock arm, 111… lock claw, 121… disk clamper, 122… Hold-down spring, 123 …… Clamper arm,
124… Support plate, 125… Support part, 126… Support plate spring, 128… Spring, 129… Actuating screw, M ₁ … Turntable motor, M ₂ … Lift motor, M ₃ …… Moving motor, M ₄ …… Pickup feed motor, S ₁ , S ₂ , S ₃ , S ₄ , S ₅
… Switch, C ₁ , C ₂ ,… engagement stage, PH ₁ , PH ₂ … Optical sensor, l ₁ , l ₂ ,… l ₆ , H, E… slit, P… power switch, K ... Input keys, J... Ejection keys, CPU... Control unit.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tadashi Ansai 2-17-5 Shibuya, Shibuya-ku, Tokyo Inside Kenwood Co., Ltd. (56) References 90451 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A magazine 8 having a plurality of disk trays 6 on which a disk 27 is placed is vertically mounted and stored, is mounted on the chassis 5, and the disk 8 and the disk 27 extend from the storage position to above the playing position. A loading arm 46 for transferring the tray 6 is provided on the loading chassis 19, and a slider 57 slidable with respect to the loading chassis 19 only in the transfer direction of the disc tray 6.
Is engaged with the loading arm 46, and the loading chassis 19 is moved up and down so that the loading chassis 19 faces one of the tray mounting stages of the magazine 8. In the multi-disc player configured to engage only with the number of engagement stages, the number of engagement stages corresponding to the respective tray mounting stages of the magazine 8 is
An engaging piece 71 provided with C ₁ , C ₂ , C ₃ ,... Movably up and down on the chassis 5, and an engaging step C so as to be able to always move up and down integrally with the engaging piece 71 by spring bias. ₁ , C ₂ , C ₃ , ...
The loading arm 46 is pushed by the slider 57 located at the storage position and at a position vertically overlapping the storage position to release the engagement with _{one of} the engagement steps C ₁ , C ₂ , C ₃ ,. And a detection piece 74 provided on the loading chassis 19 as described above.
Multi-disk player, characterized in that has a step detection switch S ₃ which is actuated by the engagement piece 71 when the loading chassis 19 from the performance position reaches the loading chassis 19 to the facing position moves upward Disk ejection position storage device.