JPH07107770B2 - Multi-disc player - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player, and more particularly to a multi-disc player capable of accommodating a plurality of discs and sequentially selecting any of the discs contained therein for continuous performance. .

Conventional technology In recent years, various digital audio discs have been released,
The amount of use is also increasing rapidly, and various multi-disc players that can successively play 6 to 10 discs have been developed. For this multi-disc player,
Many of the types that continuously play while moving the entire optical pickup block that reads the signal using a laser beam move the heavy optical pickup block up and down, so the mechanism for driving this is complicated and expensive. Was becoming.

The conventional multi-disc player described above will be described below.

FIG. 13 shows a conventional multi-disc player. In FIG. 13, the disc 102 placed on the disc carrying portion 101a of the tray 101 is a shelf 103a formed in six stages of a magazine 103.
It is arranged and stored in order, and can be freely pulled out and stored.

Reference numeral 104 denotes a mechanism main body of a multi-disc player, and a magazine base 105 for accommodating a magazine formed in a U shape always accommodates the magazine 103 in a fixed position.

Reference numeral 106 denotes a magazine push-out lever, which is always pushed in the direction A by inserting the magazine 103, but is pushed out by the pulling spring 107 in the direction B.

Reference numeral 108 denotes a magazine lock lever for locking the magazine, and is configured to be engaged with a recess 103b formed in the side wall of the magazine 103 by a pulling spring 109 so as to prevent the magazine 103 from being pushed out in the B direction.

Reference numeral 110 denotes a plunger, which is configured to release the engagement between the lock lever 108 and the recess 103b formed in the side wall of the magazine 103 when the magazine 103 is taken out, and the magazine 103 is pushed out by the magazine pushing lever 106. ing.

Reference numeral 111 denotes a speed control device for controlling the pushing speed of the magazine, which is configured to press the magazine pushing lever 106 and control the pushing speed of the magazine 103.

Reference numeral 112 denotes a tray hook, which is configured to slide in the arrow direction by being guided by a guide shaft 114 provided on a loading base 113 for supplying the tray 101 to a performance start position. 115 is a tray hook drive motor provided on the loading base and is a pulley 116 and a belt.
By 117, the tray hook 112 is driven in the arrow direction, and the recess 101b provided in the tray 101 is inserted into the tray hook 112.
The tray 101 is pulled out from the magazine 103 by being engaged with and is stored.

118 is a tray guide provided on the loading base 113 for guiding the tray 101 onto the turntable 120 of the optical pickup block 119 to start playing the disc 102.

Reference numeral 121 denotes a screw screw, which vertically moves the loading base 113 while holding the loading base 113 horizontally, so that the loading base 113 can be vertically moved by engaging with the female screw portions 122 provided at three places around the loading base 113. It is configured.

A timing belt 123 is a timing belt for driving the three screw screws by engaging with a small gear 124 provided under the three screw screws 121, and is configured to be driven by a lifting drive motor 125.

The operation of the multi-disc player configured as described above will be described below.

Magazine 10 containing 6 discs 102 and tray 101
When 3 is inserted into the magazine base 105, it is locked in place by the pushing force of the magazine push-out lever 106 and the magazine lock lever 108. Then loading base 11
3 moves up and down by the rotation of the lifting drive motor 125, and stops at the height at which the tray hook 112 and the recess 101b of the tray 101 are engaged.

Then, the tray hook drive motor 115 rotates forward,
The tray hook 112 pulls out the tray 101 in the direction a, and when the center of the disc 102 comes to the center of the turntable 120, it stops and the performance is started.

When the performance ends, the tray hook drive motor 115 reverses and the tray hook 112 pushes the tray 101 back in the arrow B direction and stores it in the magazine 103.

When the plunger 110 is energized, the magazine lock lever 108
And the concave portion 103b of the magazine 103 are released, the magazine 103 is pushed out in the direction of the arrow by the magazine pushing lever 106, and can be taken out from the multi-disc player main body 104.

SUMMARY OF THE INVENTION However, the above-described configuration requires a strong lifting structure to lift and lower the heavy optical pickup block 119, the loading base 113 incorporating the tray hook drive motor, etc. by the three screw screws 121. In addition, the entire structure was complicated and expensive.
Further, since the entire weight of the loading base 113 is heavy, it is difficult to increase the lifting speed.

Further, since the pushing-out structure of the magazine is constituted by the combination of the plunger, the pushing-out of the magazine, the lever, the speed control device and the like, there are problems such as generation of a plunger sound and a slight lack of stabilization of the pushing speed.

Furthermore, it was difficult to tell which shelf in the magazine the disc was in.

In view of the above problems, the present invention configures a heavy optical pickup block, a tray hook, a tray hook drive motor, and the like on the main body side to lighten the entire loading base, thereby increasing the lifting speed and simplifying the lifting structure. At the same time, the present invention provides an inexpensive, low-noise multi-disc player that can share a tray hook drive motor to push out a magazine and does not require a separate member for preventing tray ejection.

Means for Solving the Problems And the technical means of the present invention for solving the above problems are engaged with a drive gear to take out and convey a disc from a magazine, a drive rack for carrying and storing, and a constant lengthwise direction of the drive rack. A differential rack that is slidable by a certain amount, and after the drive rack stores a disk in a magazine, the drive gear is disengaged from the drive rack and starts meshing with the differential rack to start the magazine. It is configured to push out.

Action The action of this technical means is as follows. That is, the drive rack stores the discs in the magazine by the drive rack that engages with the drive gears and takes out and conveys the discs from the magazine, and stores and conveys the discs, and the differential rack that is slidable in the longitudinal direction of the drive racks. After that, the engagement with the drive gear is terminated and then stopped, and the drive gear starts to engage with the differential rack to drive the differential rack, and the magazine can be pushed out by the differential rack.

Embodiment A multi-disc player according to an embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the discs 2 mounted on the disc carrying portion 1a of the tray 1 are arranged and stored in order on a shelf 3a formed in six stages of a magazine 3, and can be pulled out and stored respectively.

Reference numeral 4 is a mechanism main body of the multi-disc player of the present invention, and a magazine base 5 for accommodating a magazine formed in a U-shape always has a position where the magazine 3 comes into contact with a stopper 5a formed on the magazine base 5. Has been inserted up to.

Reference numeral 6 denotes a magazine lock lever for preventing the magazine 3 inserted in the magazine base 5 from protruding, and is configured so as to be rotatable around a mounting shaft 8 on a magazine base substrate 7 provided below the magazine base 5. ing.

Reference numeral 9 is a lock lever pulling spring for rotating the magazine lock lever 6, and is biased between a spring hooking pin 6a provided on the upper portion of the magazine lock lever 6 and a spring hooking portion 7a provided on the magazine base substrate 7. ing.

Reference numeral 6b denotes a hook portion formed at the tip of the magazine lock lever 6, which penetrates the opening 5b provided in the magazine base 5 and engages with the recess 3b formed in the side wall of the magazine 3 to prevent the magazine 3 from protruding. It is configured like this.

Reference numeral 10 denotes a tray hook, which engages with the concave portion 1b of the tray 1 housed in the magazine 3 and pulls out the tray 1. The bent portion of the loading base 12 is provided with tray guides 11 for guiding the tray 1 at both ends. Tray hook and block configured to slide along the 12a in the air direction
It is provided in 13.

The tray 14 drives the tray 1 in the direction of the arrow and stores it by taking it out of the magazine 3 and storing the tray hook block 13.
It is a drive rack which is driven in the direction of (b), and is configured so that guide portions 14a and 14b provided at the lower part engage with the bent portion 4a of the mechanism main body 4 and can slide in the direction of arrow.

Reference numeral 14c denotes a column portion having a concave cross-section which is provided at one end of the drive rack 14 and which faces upward, and which has a convex portion 13 of the tray hook block 13.
It is configured so that a can be combined and slid up and down. FIG. 2 is an exploded view of the multi-disc player of the present invention. 15 rotates about a shaft 16 provided on the mechanism main body 4 and engages with teeth 14c of the drive rack to drive the drive rack in the ero direction. It is a drive gear that

Reference numeral 17 is an intermediate gear configured to engage with the drive gear 15 and the drive pulley 18 for deceleration, and is configured to rotate about a shaft 19.

20 is a drive pulley 18 provided so as to rotate around a shaft 21
And a pulley 23 provided above the motor 22 for transmitting the rotation of the motor 22 to the drive pulley 18.

A gear set lever 24 is provided so as to be rotatable around a shaft 25, and a gear set spring 26 is urged between a recess 24a at one end and a spring hook portion 4b provided on the mechanism body 4. .

Reference numeral 24b is a convex portion provided on the other end of the gear set lever 24, and when the drive rack 14 is fed in the direction B by the drive gear 15 as shown in FIG. 3A, the slope 1 of the convex portion 14d of the drive rack 14
It is configured to further push 4e in the direction of B to separate the toothless portion 14f of the drive rack 14 from the drive gear 15.

At this position, the tray hook 10 is fitted in the concave portion 1b of the tray 1 housed in the magazine 3 with a certain clearance.
It is configured to be movable in two directions.

27 is a differential rack that pushes out the magazine 3 in the right and left directions. The differential rack is slidably provided under the drive rack 14 and engages with the drive gear 15 to drive in the right and left directions. The center line and the center line of the teeth 27a of the differential rack 27 are configured to be the same line in a plane.

27b is a push-out portion that pushes out the surface of the elongated hole 14h of the drive rack 14 and the magazine 3 protruding upward, and is configured to be constantly pulled up to the end 14h 'of the elongated hole of the drive rack 14 by the pulling spring 28. At this time, the teeth 14g of the drive rack 14 and the teeth 27a of the differential rack 27 are configured so that the peaks and valleys are aligned.

FIG. 3A shows a state in which the tray hook 10 stores the tray 1 in the magazine 3, and the switch 29 provided on the mechanism body 4 is pushed by the switch pushing portion 27c provided on the differential rack 27. Switch to the ON state and switch 30
Is configured to be in the OFF state.

When the drive gear 15 rotates in the direction of the arrow in FIG. 3B, the differential rack 27 is first driven in the A direction, and then the differential rack 27 together with the drive rack 14 meshes with the drive gear 15 and advances in the B direction to differential. When the engagement with the rack 27 is completed and the drive rack 14 is further driven in the a direction, the end portion 27d of the differential rack 27 comes into contact with the stopper portion 4c of the mechanism body 4 and stops, and the drive rack 14 is further moved in the a direction. As it advances, the differential rack 27 slides on the drive rack 14, and when the state shown in FIG. 3B is reached, the tray hook 10 pulls out the tray 1 from the magazine 3 in the direction B, and the disc 2 loaded on the tray 1 is loaded. The center
As shown in FIG. 2, the state is shown in which the known optical pickup block 31 provided on the mechanism body 4 is stopped at the center of the turntable 32.

At this time, the switch 29 is in the OFF state, and the switch 30 is pushed by the convex portion 14d of the drive rack 14 to be in the ON state.

Next, when the drive gear 15 rotates in the reverse direction as shown by the arrow in FIG. 3C, the drive rack 14 is driven in the B direction, and the pushing portion 27b of the differential rack 27 is pulled by the pulling spring 28 so that the end portion of the long hole of the drive rack 14 is pulled. Abut 14i.

Further, when the drive rack 14 is driven in the direction B, it is a differential rack.
27 and drive rack 14 both mesh with drive gear 15
As shown in FIG. A, when the drive gear 15 and the drive rack 14 disengage from each other and the gear set lever 24 pushes the drive rack 14 further in the B direction, the end 14j of the drive rack 14 contacts the stopper 4d of the mechanism body 4. Stop.

When the drive gear 15 further rotates in the direction of the arrow in FIG. 3C, only the differential rack 27 is driven in the direction of B, and the pushing portion 27b 'having the inclined surface formed on one side of the pushing portion 27b as shown in FIG.
However, the concave rib 3b formed on the side wall of the magazine 3 is pushed by pushing the curved rib portion 6c formed below the magazine lock lever 6 and rotating the magazine lock lever 6 in the direction of the arrow.
When the lock of the hook portion 6b formed at the tip of the magazine lock lever 6 is released, and the differential rack 27 is driven in the direction B, the pushing portion 33a of the eject lever 33 provided on the magazine base board 7 is pushed. Push part 27b of differential rack 27
Then, the magazine 3 is pushed out in the direction of B to push the magazine 3 into the state shown in FIG. 3C.

The eject lever 33 is a shaft provided on the magazine base board 7.
The long hole 33b and the long hole 33b are fitted to each other so that they can slide a certain amount in the direction of the arrow, and the bent portion 33c at one end pushes out the lower portion of the magazine 3.

At this time, the switch 29 is the switch pushing portion 27e of the differential rack 27.
The switch 30 is in an ON state by the switch pushing portion 27f of the differential rack 27, and is in an ON state by the switch pushing portion 27f.

When the magazine 3 is inserted into the magazine base 5 as shown in FIGS. 3D and 5, the magazine lock lever 6 is pulled by the pulling spring 9.
By this, it rotates in the direction of arrow E, and the hook portion 6b engages with the concave portion 3b provided on the side wall of the magazine 3 so that the magazine 3 is locked so as not to come out in the direction B.

The eject lever 33 is pushed in the Y direction to drive the push-out portion 27b of the differential rack 27 in the Y direction.

At this time, the switch 30 is the switch pushing portion 27f of the differential rack 27.
Is separated from the motor 22 and the switch 29 is separated from the switch pushing part 27e of the differential rack 27 and turned off.
Is rotated to rotate the drive gear 15 in the direction of the arrow in FIG. 3D so that only the differential rack 27 is driven in the direction a and stops in the state of FIG. 3A.

When the differential rack 27 is driven by the motor 22 and moves in the direction a, the pushing portion 27 having an inclined surface as shown in FIG.
The slanted surface of b ′ pushes up the rib portion 6c of the magazine lock lever 6 in the T direction and passes it.

The magazine lock lever 6 is made of a spring-like resin material such as polyacetal resin, and the thin spring portion 6d bends when pushing up the rib portion 6c in the direction of T, and the pushing portion 27b 'is bent so that the pushing portion 27b'. When the rib portion 6c is passed, the rib portion 6c is configured to return in the C direction again.

35 is a lifting motor, which is a pulley installed at the top
A belt 39 is provided between 36 and a pulley gear 38 configured to rotate around a shaft 37 provided in the mechanism body 4.

The intermediate gear 41, which is provided so as to rotate about the shaft 40, is configured to engage with the gear portion 43a of the elevating cam 43, which is provided so as to rotate around the shaft 42, and the pulley gear 38.

In FIG. 5, reference numeral 44 denotes an elevating rack provided below the loading base 12, which is configured to engage with the elevating cam 43 to elevate the loading base 44 in the honey direction.

Reference numeral 43b denotes a sensor wall portion formed in a ring shape on the lower portion of the elevating cam 43, and has a slit portion 43b '.

A photoelectric switch 45 is configured to count the number of rotations of the elevating cam by passing through the slit portion 43b '.

The space between the teeth of the lifting rack 44 is the shelf 3a of the magazine 3.
The shelves are formed in the same manner as the shelves and are configured to feed one tooth by one rotation of the elevating cam 43.

Reference numeral 46 denotes a limit switch, and when the elevating rack 44 descends in two directions and the tray hook 10 falls below the position of the lowermost shelf of the magazine 3, the convex portion 44a formed on the elevating rack 44 turns on the limit switch 46. It is configured like this.

Reference numeral 47 is a timing gear for preventing the loading base 12 from tilting, and is fixed to both ends of a gear shaft 48 that penetrates through holes 12b provided on both sides of the loading base 12.

Numeral 5b is a tooth portion provided at both ends of the magazine base 5, and is constituted so as to engage with the timing gear 47, and guide portions 48a formed at both ends of the gear shaft 48 so as to protrude from the timing gear 47 are provided on the magazine base 5. The timing gear 47 is configured to be fitted in the guide grooves 5c formed at both ends so as not to be disengaged from the tooth portion 5b of the magazine base.

49 and 50 are lifting levers for lifting and lowering while holding the loading base 12 horizontally, and lifting assist levers,
One pair is provided on each side of the loading base 12.

A shaft 51 provided in the loading base 12 is fitted into a hole 49a provided at one end of the elevating lever 49 to support the shaft, and a shaft 52 provided at a central portion of the elevating lever 49 is provided at a central portion of the elevating auxiliary lever 50. The shaft 53 provided at the other end of the elevating lever 49 is fitted to the elongated hole 50a,
The supporting portion 5 provided on the mechanism main body 4 is inserted into the elongated holes 54a and 54a 'of 4'and the hole 50b provided at one end of the lifting assist lever 50 is provided on the mechanism main body 4.
The shafts 55a and 55a 'of 5 and 55' are inserted to support the shafts, and the shaft 56 provided on the loading base 12 is inserted into the elongated hole 50c provided at the other end of the lift assist lever 50.
When the shaft 51 is driven in the C direction, the shaft 52 of the lift lever 49 lifts the upper part of the elongated hole 50a of the lift assist lever 50, and only the amount that the shaft 51 is driven in the C direction loads the elongated hole 50c of the lift assist lever 50. The loading base 12 is horizontally held by driving the shaft 56 provided on the base 12 in the direction of C.

FIG. 6 shows the whole of the multi-disc player of the present invention. The front panel 58 of the player housing 57 is shown in FIG.
In the player housing 57, there is provided an opening 58a for mounting the magazine 3 for storing the disk. Further, an operation button group 59 and a display section 60 for operating the multi-disc player are provided on the front panel 58.

Reference numeral 4 denotes the mechanism main body of the multi-disc player of the present invention, which is formed in the player housing 57.

FIGS. 6 to 9 explain another embodiment of the multi-disc player of the present invention with reference to the drawings.

In FIG. 6, reference numeral 61 denotes a disc display portion provided on the front panel 58, and when the magazine 3 is mounted in the player housing 57, only the place where the discs of the six shelves 3a of the magazine 3 are placed is turned on. The six contact points 62a of the six-series switch 62 are connected to the six contacts of the magazine 3 respectively.
It is arranged at a position corresponding to the shelf 3a.

Reference numeral 63 is a disk switch lever configured to be rotatable about a shaft 64 provided on the magazine base substrate 7, and is configured to insert and fix the six-switch 62 into a recess 63a provided at one end.

Reference numeral 65 denotes a disk switch auxiliary lever, which is attached so as to be rotatable around a shaft 64, and is pulled so that the spring hook portion 65a formed in the central portion is brought closer to the spring hook portion 63b of the disk switch lever 63. Spring 66 is biased.

Reference numeral 65b denotes a push portion provided at one end of the disc switch auxiliary lever 65, and when the magazine 3 is inserted into the magazine base 5, the push portion 65b is pushed by the inclined portion 33d formed at the tip of the eject lever 33, and the disc switch auxiliary lever 65b is pushed. 6
It is configured to rotate 5 in the arrow direction. At this time, the disk switch lever 63 is rotated in the redirection together by a tension spring 66 urged between the disk switch auxiliary lever and the disk switch auxiliary lever, and one end of the disk switch lever 63 is pivotally supported by a switch shaft 62b so that the disk switch lever 63 can be rotated to the 6-switch 62. Six switch pieces provided
The distal end 62c 'of the 62c abuts against the disk 2 and stops, and when the disk switch lever 63 further rotates in the re-direction, the other end 62C "of the switch piece 62c pushes the contact 62a to turn it off.

Reference numeral 67 is a tension spring urged between a spring hook portion 65c provided on the disk switch auxiliary lever 65 and a spring hook portion 7b of the magazine base substrate 7, and when the magazine 3 is not always in the magazine base 5, The switch lever 63 is rotated in the direction n so that the six-series switch 62 is separated from the disc 2.

Reference numeral 14k denotes a cam portion formed on the upper part of the drive rack 14, and when the drive rack 14 is driven in the arrow A direction and the disc 2 is taken out from the magazine 3 and conveyed, the disc 2 is moved before the movement in the A direction. The roller portion 63c provided at the other end of the switch lever 63 is provided on the slope 14 at one end of the cam portion 14k.
It is constructed so as to rotate in the direction of the arrow by k'and prevent the disc 2 from contacting the switch piece 62c.

At this time, as shown in FIG. 9, a slide piece provided with a convex portion 68a that slides a predetermined amount in the concave portion 13a provided in the tray hook block 13 and fits into a column portion 14c having a concave cross section of the drive rack 14.
A slide piece 68 configured such that one end of the 68 is retained by the seat of the stopper screw 69 and the other end is constantly pressed by the compression spring 70 in the direction a is a column portion 14 having a concave cross section of the drive rack 14.
When the tray 1 is returned to and housed in the magazine 3 by the tray hook 10 by being driven in the arrow B direction by c, one end 13b of the tray hook block 13 is loaded into the loading base 12.
The drive rack 14 is configured so as to stop by hitting a stopper portion 12c provided on the bent portion 12a, and further, the drive rack 14 drives the slide piece 68 in a certain amount in the direction b and compresses the compression spring 70 by a certain amount to stop. Even if 14 is driven in the direction a by a certain amount, the tray 1 does not start moving in the direction a, and the roller portion 63c of the disk switch lever 63 is driven during a certain amount of drive of the drive rack 14. The inclined surface 14k 'at one end of the cam portion 14k of the rack 14 is rotated in the arrow N direction to prevent contact between the disk 2 and the switch piece 62c, and the disk 2 is pulled out in the arrow A direction to a position where it does not contact the switch piece 62c. When moved, the roller portion 63c moves along the inclined surface 14k ″ at the other end of the cam portion 14k, and the disc switch lever 6
3 is configured to rotate and return in the redirection.

FIG. 10 shows another embodiment of the multi-disc player of the present invention, which will be described with reference to the drawings.

In FIG. 10, 71 is the eject lever A, which has two holes.
Two shafts 34 provided on the lower surface so as to be caulked and fixed to 71a are slidably fitted in the elongated holes 7'a of the magazine base substrate 7'in the arrow arrow direction.

72 is an eject lever B, which is configured so that the shaft 34 that fits in the two elongated holes 72a is caulked and fixed in the two holes 71B of the eject lever A71 so that the eject lever B72 can slide on the eject lever A71 by a certain amount. ing.

Reference numeral 73 denotes a pulling spring, which is biased between a spring hooking portion 71c provided on the eject lever A71 and a spring hooking portion 72b of the eject lever B72 so as to pull each other.

Reference numeral 71d is an L-bent portion provided at one end of the eject lever A71. When the magazine 3 is inserted into the magazine base 5, the lower portion of the magazine 3 is pushed to eject the eject lever A71.
And the eject lever B72 are both configured to move in the arrow Y direction, and the inclined portion 71e provided on the eject lever A71 rotates the disc switch auxiliary lever 65 in the arrow direction, and is provided at one end of the eject lever B72. The pushing portion 72c is configured to push the pushing portion 27b of the differential rack 27 in the arrow A direction.

74 is a magazine pushing spring, which is a magazine base substrate 7 '.
Of the spring hooking portions 7'b, 7'c, 7'd of the one end 74a.
Is configured to push back a certain amount of the pushing portion 71f of the eject lever A71 in the B direction. When the magazine 3 is inserted into the magazine base 5 by this spring force and the magazine 3 is locked by the magazine lock lever 6, the magazine 3
The play between the recessed portion 3b formed on the side wall and the hook portion 6b of the magazine lock lever 6 is eliminated.

Also, when the magazine 3 is inserted into the magazine base 5 at a rapid speed, the tension spring 73 is stretched by the load of the differential rack 27, the insertion speed of the magazine 3 is moderated, and it is transmitted to the pushing portion 27 of the differential rack. It is configured.

11 to 12 show another embodiment of the multi-disc player of the present invention, which will be described with reference to the drawings.

In the figure, the magazine 3 is a flat box-shaped magazine case 3-
1 and a bottom plate 3-2 and a tray lock base block 75 for locking and clamping the tray 1.

To explain the configuration of the magazine 3 in more detail, the lock base block 75 has a lock lever shaft provided on the lock base 76 in order to prevent the tray 1 from popping out when the tray 1 is stored along the shelf 3a of the magazine 3. The lock lever 78 is attached to 77 so that it can be rotated.
One end 78a is formed in a hook shape so as to prevent the tray 1 from moving in the direction of the arrow a by engaging with the convexly formed lock portion 1c of the tray 1, and the other end 78b is outside the magazine 3. The lock base 76 corresponds to the position of the hole 3c of the magazine 3 by pushing with a finger from the one end 78a of the lock lever 78 and the lock portion 1c of the tray 1 so that the lock base 76 corresponds to the position of the hole 3c of the magazine 3. 1 and attached to the bottom plate 3-2.

The magazine case 3-1 and the bottom plate 3-2 are fixed by welding to form the magazine 3.

Reference numeral 79 denotes a lock spring, which constantly rotates the lock lever 78 in the direction of arrow E, so that the center portion is inserted into the lower portion of the lock lever shaft 77 and one end 79a is brought into contact with the bent portion 76a of the lock base 76 and the other end
79b is applied to a convex portion 78c formed on the lower portion of the lock lever 78 to bias the spring pressure.

Reference numeral 80 denotes a tray set lever, which is formed with a recessed portion 1d formed in the tray 1 on the tray set lever 80 in order to correctly determine the storage position when the six trays 1 stored in the magazine 3 are put in and taken out one by one. The protruding portion 80a is configured to be pushed, and the pushing portion 80b of the tray set lever 80, which is attached to the tray set lever shaft 81 provided on the lock base 76 at all times so as to be rotatable, is an L-shaped portion formed on the lock base 76. The L-shaped leaf spring 82 attached to the bent portion 76b is configured to push.

The leaf springs 82 are formed by press-forming one leaf spring into a comb shape and bending the central portion 82a into an L shape. Six leaf springs are provided, one for each of the six trays 1. The six comb-shaped portions 82b of the leaf spring 82 individually push the tray set lever 80.

Reference numeral 76c is a detent portion that is bent upward on the lock base 76, and is configured so that one end 80c of the tray set lever 80 abuts on it to deter the detent.

Reference numeral 3d is a rib provided in the inner part of the magazine case 3-1, and is a stopper when the tray 1 is inserted into the magazine 3.

Reference numeral 83 denotes a lock release lever provided between the pushing portion 27b of the differential rack 27 and the lock lever 78, which can be rotated in a predetermined amount in the arrow work direction about a shaft 84 provided on the magazine base substrate 7. It is configured like this.

Reference numeral 83a denotes a convex portion provided at one end of the lock release lever 83, and a convex inclined portion 83b provided at the other end of the lock release lever 83 causes a push portion 27b of the differential rack 27 by moving the differential rack 27 in the direction a. When the tray 1 is pushed by and is rotated in the arrow w direction, the lock release piece 78b of the lock lever 78 is pushed to unlock the tray 1 and the tray 1 can be pulled out from the magazine 3 in the direction a.

Reference numeral 85 is a pulling spring and is a spring hook portion 83 of the lock release lever 83.
The lock release lever 83 is always urged between the c and the spring-loaded portion 7'd of the magazine base substrate 7 so as to rotate the lock release lever 83 in a fixed direction by a certain amount.

86 is a wire spring, and the lock release lever 83 is formed of a spring-like resin material that is configured to bend in the arrow w direction to bend as shown by the 83 detailed view in FIG. 11.
In order to protect the thin portion 83d of 83 from permanent deformation, the thin portion 8
It is inserted in U-shaped spring receiving portions 83e, 83f formed on the left and right of 3d.

Reference numeral 86a is a Z-shaped bent portion formed at one end of the wire spring 86, and is configured to be inserted into a small hole 83g provided in the lock release lever 83 so as not to come out upward.

Reference numeral 83f 'is an upward stopper for the wire spring 86 formed on the U-shaped spring receiving portion 83 of the lock release lever 83.

Fig. 11d shows the eject lever A from the concave portion 3b of the magazine 3,
When the magazine 3 is pushed out in the B direction, the hook portion 6b of the magazine lock lever 6 shown in FIG. It is constructed so as to prevent the overrun of the magazine 3 in the B direction by pushing the concave portion 3d.
Reference numeral 3e is an opening provided on the side wall of the magazine 3 for detecting the presence or absence of the disk 2.

The operation of the multi-disc player configured as described above will be described below with reference to FIGS. 1 to 12.

First, when a disk to be played is designated by operating the operation button group 59 shown in FIG. 6, a driving voltage is supplied to the lifting motor 35, and the lifting cam 43 and the lifting rack 44 are driven to load the disk. The base 12 rises in the direction of "c" and stops at the designated disc position. This position is determined by the count of the photoelectric switch 45 in combination with a known microcomputer.

Next, the drive voltage is supplied to the motor 22 and the drive rack
14 and the differential rack 27 are driven in the A direction by the engagement with the drive gear 15, and the switch 30 is turned on in the state of FIG. 3B.
Then stop.

At this time, the tray hook block 13 is driven in the direction a by the fitting of the convex portion 13a and the pillar portion of the drive rack 14, so that the center of the turntable 32 of the optical pickup block 31 and the center of the disc 2 on the tray 1 are driven. Tray hook 10 pulls out tray 1 until they almost match.

Next, the reverse voltage is supplied to the lifting motor 35, the loading base 12 is lowered in the two directions and the limit switch 46 is pushed, and then further lowered by a certain amount and then stopped. The parallelism between the magazine and the loading base is maintained by the engagement of the timing gear and the teeth of the magazine base. This lowering position is performed in combination with a known microcomputer by the count number of the photoelectric switch 45.

At this time, the disc 2 is supplied to the turn of the optical pickup block 31 and onto the table 32, and the performance is started while keeping a certain amount of clearance between the disc 2 and the tray 1.

When the performance ends, a drive voltage is supplied to the lifting motor 35 by a known combination of the end detection means and the microcomputer, and the loading base 12 moves upward in the direction of "c" and stops at the position where it is first taken out and stored in the computer. .

Next, the reverse voltage is supplied to the motor 22, the drive rack 14 and the differential rack 27 are driven in the direction of B, stop at the position shown in FIG. 3A, and the switch 29 is turned on. At this time, the tray 1 and the disc 2 are stored in the magazine 3.

Then, the reverse voltage is supplied to the lifting motor 35, the loading base 12 descends in the two directions, and the limit switch 46 is turned on.
Turn it on to stop the operation. By designating the operation button group 59, the six discs in the magazine can be successively played in succession, the program performance of only the favorite disc, the repeated performance of one disc, etc. can be performed in combination with a known microcomputer.

Sixth when removing magazine 3 from player housing 57
When the eject button of the operation button group 59 shown in the figure is operated, only the operation rack 27 is driven in the direction B as shown in FIG. 3C, and then the magazine lock lever 6 and the magazine 3 are driven.
After the lock is released, the eject lever 33 is pushed in the direction B so that the magazine 3 can be pushed out in the direction B and taken out. At this time, the switches 29 and 30 are both turned on.

Third when inserting magazine 3 into player housing 57
As shown in FIG. D, when the magazine 3 pushes the eject lever 33 in the Y direction and the eject lever 33 pushes the differential rack 27 in the A direction, the switch 30 causes the switch pushing portion 27f of the differential rack 27.
The differential rack 27 is driven in the direction a until the switch 29 is turned on by the switch pushing portion 27c of the differential rack 27 as shown in FIG. 3A.

Further, each shelf of the magazine 3 in which the disks 2 are arranged and stored in order.
Switch piece of 6-series switch 62 provided at the position corresponding to 3a
When 62c inserts the magazine 3 into the player housing 57, the disc 2 approaches the disc 2 to detect the presence or absence, and the disc display 61 displays a light.

Next, before the disc 2 is taken out of the magazine 3, the disc switch lever 63 is rotated by the cam portion 14k of the drive rack 14 to allow the switch piece 62c not to come into contact with the disc 2 and then the disc is taken out of the magazine 3. The switch piece 62c is transferred to the disk switch lever 6
When the disk 2 is taken out and conveyed to the position where it does not touch the disk 2 by the rotation return of 3, the disk switch lever 63 can be returned again by the pulling spring 66. Further, when the magazine 3 is rapidly inserted into the magazine base 5, the tension spring 73 is extended by the load of the differential rack 27 and the insertion speed of the magazine 3 is moderated. It is possible to prevent an erroneous operation of pulling out the tray by pushing the oblong hole 14b 'of 14 too much and the drive rack 14 moving too much in the direction a.

The positional relationship between the drive rack 14 and the differential rack 27 shown in FIG. 11 is the third.
At the position shown in FIG. A, in this state, when the drive gear 15 is driven to drive the differential rack 27 and the drive rack 14 in that order in the direction of arrow a, the pushing portion 27b of the differential rack 27 causes the unlocking lever 83 to move. The convex portion 83b is pushed and rotated in the arrow w direction to unlock the tray 1 and the lock lever 78.

Since the tray hook block 13 is pressed against the stopper portion 12c of the loading base 12 and the compression spring 70 is compressed at the initial stage when the drive rack 14 is driven in the direction a, as described with reference to FIG. Even if the drive rack 14 moves in the Y direction, the tray hook 10 does not move in the Y direction even if it advances in the A direction. Therefore, the tray 1 is not pulled out in the direction a. At this timing, tray 1 and lock lever 78
When the lock is released and the drive rack is further driven in the a direction, the slide piece 68 pushes the stopper 69, drives the tray hook block 13 in the a direction, and pulls out the tray 1. When the drive rack 14 is further driven in the direction a, the 11th
The pushing part 27b of the differential rack shown
The lock release lever 83 is pivotally returned by the pulling spring 85 to the tray 1 in the magazine 3 and is locked again by the lock lever 78.

When the tray 1 is driven in the B direction and stored in the magazine 3 after the performance is finished, the pushing portion 27b of the differential rack pushes the convex inclined portion 83b of the lock release lever 83 to rotate it in the w direction. , And returns to the original position shown in FIG. 3A.

When the lock release lever 83 is pushed by the pushing portion 27b of the differential rack and pivots in the arrow w direction, the convex portion 83a at one end pushes the lock lever 78 and the thin portion 83d bends, but the U-shaped spring receiving portion 8
The wire springs 86 inserted through 3e and 83f prevent permanent deformation of the thin portion 83d and prevent deterioration of the spring effect.

Further, the hook portion 6b of the magazine lock lever 6 pushes the concave portion 3d, so that the overrun of the magazine 3 in the direction B can be prevented.

EFFECTS OF THE INVENTION As described above, according to the present invention, a drive rack that engages with a drive gear to take out, conveys, and stores a disc from a magazine, and a differential that is slidable by a certain amount in the longitudinal direction of the drive rack. And a drive gear that includes a rack and is disengaged from the drive rack, starts engagement with the differential rack, and pushes out the magazine. It is possible to inexpensively provide a multi-disc player that has no structure, is quiet, and has a simple structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mechanism of a multi-disc player according to an embodiment of the present invention, FIG. 2 is an exploded view of the mechanism, and FIG. 3 is a plan view for explaining horizontal driving operation of the multi-disc player. 4 is a perspective view for explaining locking and unlocking of the magazine, FIG. 5 is a perspective view showing a vertical drive structure of a loading base, and FIG. 6 is a perspective view showing the whole multi-disc player of the embodiment of the present invention. FIG. 7 (A) is a plan view for explaining another embodiment, (B) is a front view thereof, (C) is a right side view, and FIGS. 8 and 9 are perspective views for explaining the details. 10 and 11 are perspective views for explaining another embodiment, FIG. 12 is an enlarged perspective view and plan view of a tray portion, and FIG. 13 is a perspective view showing a conventional multi-disc player. . 3 ... Magazine, 5 ... Magazine base, 14 ... Drive rack, 15 ... Drive gear, 27 ... Differential rack, 28 ... Extension spring, 29, 30 ... Switch.

Claims (1)

[Claims] 1. A drive rack that engages with a drive gear to take out and convey a disc from a magazine and conveys the disc, and a differential rack that is slidable by a predetermined amount in the longitudinal direction of the drive rack. A multi-disc player characterized in that after the discs are stored in the magazine, the drive gear is disengaged from the engagement with the drive rack to start the engagement with the differential rack and push out the magazine.