JPH07107769B2 - Multi-disc player - Google Patents

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. Regarding

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.
They are arranged and stored in order, and can be pulled out and stored respectively.

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. Reference numeral 115 is a tray hook drive motor provided on the loading base. The pulley 116 and the belt 117 drive the tray hook 112 in the direction of the arrow, and the recess 101b provided in the tray 101 has the concave portion 101b.
The tray 101 is configured to be pulled out from the magazine 103 by engaging with 12, and to be 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 up and down while holding the loading base 113 horizontally. Therefore, the loading base 113 is vertically moved up and down by engaging with female screw portions 122 provided at three places around the loading base 113. It is configured like this.

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-back force of the magazine push-out lever 106 and the magazine lock lever 108. Then loading base
The 113 moves up and down by the rotation of the lifting drive motor 125, and stops at a 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 starts.

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

When the plunger 110 is energized, the magazine lock lever 1
The engagement between 08 and the concave portion 103b of the magazine 103 is released, and the magazine 103 is pushed out by the magazine push-out lever 106 in the B direction 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.

In view of the above problems, the present invention has a structure in which the tray hook drive motor is shared and the magazine is pushed out, so that the tray lock lever is locked by pushing the lock release lever when the tray is pulled out from the magazine, and the reliability is high. The present invention provides an inexpensive, low-noise multi-disc player.

Means for Solving the Problems And the technical means of the present invention for solving the above problems is to form a thin portion in a part of a resin molded component for unlocking a tray lock lever, and to form U-shaped springs at both ends thereof. The receiving portion is formed, and a wire spring is inserted into the U-shaped spring receiving portion to prevent deterioration of the spring effect of the thin portion.

Action The action of this technical means is as follows.

That is, a U-shaped portion formed at both ends of a thin-walled portion formed by resin molding that is easily deformed and has a structure that absorbs the variation in the pushing amount by bending the thin-walled portion formed in a part of the lock release lever that is a resin molded component. It is possible to prevent deterioration of the spring effect of the thin-walled portion by inserting a metal wire spring that is hard to be permanently deformed into the spring-shaped spring receiving portion.

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

In FIG. 2, the discs 2 placed on the disc carrying portion 1a of the tray 1 are arranged and stored in order on the shelves 3a formed in six stages of the 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 denotes a lock lever pulling spring for rotating the magazine lock lever 6, which is urged 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. Has been done.

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

Reference numeral 10 denotes a tray hook, which engages with the concave portion 1b of the tray 1 housed in the magazine 3 to pull out the tray 1, and bends the loading base 12 provided with tray guides 11 for guiding the tray 1 at both ends. It is provided on a tray hook / block 13 which is constructed so as to be slidable in the direction of the arrow along the portion 12a.

Numeral 14 is a drive rack for driving the tray 1 in the direction of the arrow to drive the tray hook block 13 in the direction of the arrow for storing and taking it out from the magazine 3, and the guide portions 14a and 14b provided at the bottom of the rack. It is configured so that it can be slid in the arrow direction by engaging with the bent portion 4a of the mechanism body 4.

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 is a convex portion of the tray hook block 13.
It is configured so that 13a can be engaged and slid up and down. FIG. 3 is an exploded view of the multi-disc player of the present invention, in which 15 is rotated around a shaft 16 provided on the mechanism main body 4 and meshes with teeth 14c of the drive rack to move the drive rack in the direction of the arrow. It is a drive gear to drive.

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
4e is further pushed in the direction B to separate the toothless tooth 14b 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, and is driven in the right and left directions. 14g centerline and differential rack 27 teeth 2
The center line of 7a is configured so as to be flush with the 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. 4A 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 main 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 positive direction, the end portion 27d of the differential rack 27 comes into contact with the stopper portion 4c of the mechanism main body 4 and ascends, and the drive rack 14 further moves in the positive 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. 3, it shows a state 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. 4C, the drive rack 14 is driven in the direction of B, 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 the drive rack 14 are both engaged with the drive gear 15, and the drive gear 15 and the drive rack 14 are disengaged as shown in FIG. 4A, and the drive rack 14 is driven by the gear set lever 24.
When is further pushed in the direction B, the end 14j of the drive rack 14 comes into contact with the stopper 4d of the mechanism body 4 and stops.

When the drive gear 15 further rotates in the direction of the arrow in FIG. 4C, only the differential rack 27 is driven in the B direction, and the pushing portion 27b 'having the inclined surface formed on one side of the pushing portion 27b as shown in FIG.
However, 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, the concave portion formed on the side wall of the magazine 3 is depressed.
When the hook 6b formed at the tip of the magazine lock lever 6 is unlocked from 3b and the differential rack 27 is driven in the B direction, the pusher 33a of the eject lever 33 provided on the magazine base board 7 is pushed. Is the pushing part 2 of the differential rack 27
Pushed by 7b, push out magazine 3 in the direction of B, Fig. 4C
It becomes the state of.

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, and the switch 30 is configured to be in an ON state by the switch pushing portion 27b of the differential rack 27.

When the magazine 3 is inserted into the magazine base 5 as shown in FIGS. 4D and 6, the magazine lock lever 6 is rotated in the arrow E direction by the pulling spring 9 to hook the concave portion 3b provided on the side wall of the magazine 3 in the concave portion 3b. The 6b is engaged and the magazine 3 is locked so that it does not come out in the B direction.

The eject lever 33 is pushed in the direction of
The pushing portion 27b of is driven in the direction a.

At this time, the switch 30 is the switch pushing portion 27b 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. 4D, and only the differential rack 27 is driven in the direction a and stopped in the state of FIG. 4A.

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 motor for lifting and lowering
A belt 39 is provided between a pulley gear 38 configured to rotate around a shaft 37 provided on the mechanism body 4.

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

In FIG. 6, reference numeral 44 is an elevating rack provided below the loading base 12, and 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 be meshed with the timing gear 47, and guide portions 48a formed at both ends of the gear shaft 48 so as to project out from the timing gear 47 are provided on the magazine base 5. The timing gear 47 is configured so as not to be disengaged from the tooth portion 5b of the magazine base by being fitted in the guide grooves 5c formed at both ends.

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 on the loading base 12 is fitted and supported in a hole 49a provided at one end of the elevating lever 49, 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 on the other end of the elevating lever 49, which is fitted into the elongated hole 50a, is attached to the attachment portions 54 and 5 provided on the mechanism main body 4.
4'is inserted into the long holes 54a and 54a ', and the shafts 55a and 55a' of the supporting portions 55 and 55 'provided on the mechanism main body 4 are inserted into the holes 50b provided at one end of the lift assist lever 50 to support the shaft. Then, the shaft 56 provided on the loading base 12 is inserted into the elongated hole 50c provided at the other end of the lifting assist lever 50, so that when the shaft 51 is driven in the direction C, the shaft 52 of the lifting lever 49 is moved.
Lifts the upper part of the long hole 50a of the lifting assistance lever 50, and only the amount that the shaft 51 is driven in the direction c
Is configured to horizontally hold the loading base 12 by driving the shaft 56 provided on the loading base 12 in the direction of C.

FIG. 7 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.
Is provided with a mounting opening 58a of the magazine 3 for storing a disc in the player housing 57.

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. 7 to 10 explain another embodiment of the multi-disc player of the present invention with reference to the drawings.

In FIG. 7, 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-tier shelf 3a of the magazine 3 are 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 disc switch auxiliary lever, which is attached so as to be rotatable about a shaft 64, and a spring for pulling the spring 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. 66 are urged.

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 also rotated in the redirection by a tension spring 66 biased between the disk switch auxiliary lever and the disk switch auxiliary lever, and one end thereof is pivotally supported by a switch shaft 62b.
When the tip ends 62c 'of the six switch pieces 62c rotatably provided on the series switch 62 come into contact with the disk 2 and stop, and when the disk switch lever 63 further rotates in the redirection, the other end of the switch piece 62c. 62C ″ is configured to push 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.

14k is a cam portion formed on the upper part of the drive rack 14,
When the drive rack 14 is driven in the direction of arrow A and the disc 2 is taken out from the magazine 3 and conveyed, the roller portion 63c provided at the other end of the disc switch lever 63 is moved before the disc 2 starts moving in the direction A. Slope at one end of cam section 14k
14k 'is configured to rotate in the direction of arrow N to prevent contact between the disk 2 and the switch piece 62c.

At this time, as shown in FIG. 10, 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 in the direction a by the compression spring 70
When the tray 1 is driven in the direction of arrow B by 14c and the tray 1 is returned and stored in the magazine 3 by the tray hook 10, one end 13b of the tray hook block 13 is loaded into the loading base 1.
Stop by hitting the stopper portion 12c provided on the second bent portion 12a,
Further, since 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, the tray 1 is not moved even if the drive rack 14 is driven in the certain amount in the direction a. It is designed not to start moving in the direction a,
While the drive rack 14 is being driven for a certain amount, the roller portion 63c of the disk switch lever 63 causes the cam portion 14k of the drive rack 14 to move.
When the inclined surface 14k 'at one end of the disk 2 is rotated in the direction of arrow n to prevent contact between the disk 2 and the switch piece 62c, the disk 2 is pulled out in the direction of arrow i and moved to a position where it does not contact the switch piece 62c. Is the cam part 14k
The disk switch lever 63 is structured so as to pivot and return in the rear direction by having the inclined surface 14k ″ at the other end thereof.

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

In FIG. 11, 71 is an 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, and the shaft 34 that fits into the two elongated holes 72a is caulked and fixed to 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. Has been done.

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 A7.
1 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 to move the eject lever B72 to one end of the eject lever B72. The pushing portion 72c provided 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 the pushing portion 71b of the eject lever A71 by a certain amount in the direction of B. 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 extended 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.

FIG. 1, FIG. 11 and FIG. 12 are embodiments showing the characteristics of the multi-disc player of the present invention best, 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 describe the configuration of the magazine 3 in more detail, the lock base block 75 has a lock lever shaft 77 provided on the lock base 76 to prevent the tray 1 from popping out when the tray 1 is stored along the shelf 3a of the magazine 3. Lock lever
The lock lever 78 is mounted so as to be rotatable, and one end 78a of the lock lever 78 is engaged with a convex lock portion 1c of the tray 1 to prevent the tray 1 from moving in the arrow A direction. The other end 78b, which is formed in a circular shape, is a lock releasing piece for releasing the lock between the one end 78a of the lock lever 78 and the lock portion 1c of the tray 1 by pushing with a finger from the outside of the magazine 3 and the hole 3c of the magazine 3. The lock base 76 is attached to the magazine case 3-1 and the bottom plate 3-2 so as to correspond to the position of.

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

Reference numeral 79 is a lock spring, and in order to always rotate the lock lever 78 in the arrow E direction, the central 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 79
It is configured such that b 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 a concave portion 1d formed on the tray 1 in order to correctly determine the storage position when the 6 trays 1 stored in the magazine 3 are taken in and out one by one.
Is configured so that the protrusion 80a formed on the tray set lever 80 pushes, and the push portion 80b of the tray set lever 80 mounted so as to be rotatable on the tray set lever shaft 81 provided on the lock base 76 is always locked. L formed on 76
The L-shaped leaf spring 82 attached to the L-shaped 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 is rotatable about a shaft 84 provided on the magazine base board 7 in a predetermined amount in the arrow work direction. It is configured.

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 constantly urged between the c and the spring hooking portion 7'd of the magazine base substrate 7 so as to rotate the lock release lever 83 by a certain amount in the direction.

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 permanent deformation of the thin portion 83d of 83, the thin portion 83d
It is inserted into U-shaped spring receiving portions 83e and 83f formed on the left and right sides of the.

86a is a Z-shaped bent portion formed at one end of the wire spring 86,
Insert into the small hole 83g provided in the lock release lever 83,
It is structured so that it does not 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.

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

First, when the disk to be played is designated by operating the operation button group 59 shown in FIG. 7, a drive voltage is supplied to the lifting motor 35, and the lifting cam 43 and the lifting rack 44 are driven. , The loading 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
The 14 and the differential rack 27 are driven in the direction of A by the engagement with the drive gear 15, and the switch 30 is turned on and stopped in the state of FIG. 4B.

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, and the center of the turntable 32 of the optical pickup block 31, the tray 1, the upper disc 2, The tray hook 10 pulls out the tray 1 until the centers of the trays are almost aligned.

Next, a reverse voltage is supplied to the lifting motor 35, the loading base 12 descends in the two directions, and after pressing the limit switch 46, it further descends by a certain amount and stops. 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 onto the turntable 32 of the optical pickup block 31, and the performance is started with a certain amount of gap maintained between the disc 2 and the tray 1.

When the performance ends, the driving voltage is supplied to the lifting motor 35 by the known combination of the end detection means and the microcomputer, and the loading base 12 moves up in the direction of "c" and is stored in the computer at the first extracted position. Stop.

Next, the reverse voltage is supplied to the motor 22, the drive rack 14 and the differential rack 27 are driven in the direction B, stop at the position shown in FIG. 4A, 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.

7th when removing the magazine 3 from the 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 of B as shown in FIG. 4C, 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 B direction, and the magazine 3 can be pushed out in the B direction and taken out. At this time, the switches 29 and 30 are both turned on.

Fourth 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 a direction until the switch 29 is turned on by the switch pushing portion 27c of the differential rack 27 as shown in FIG. 4A.

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 from the magazine 3 and conveyed, the disc switch lever 63 is rotated by the cam portion 14k of the drive rack 14 so that the switch piece 62c does not come into contact with the disc 2, and then the disc 2 is ejected from the magazine 3. When the disc 2 is taken out and conveyed, and the disc 2 is taken out and conveyed to a position where the switch piece 62c does not touch the disc 2 due to the rotation return of the disc switch lever 63, the pulling spring 66 can return the disc switch lever 63 again. I can. Further, when the magazine 3 is inserted into the magazine base 5 at a rapid speed, the load of the differential rack 27 causes a tension spring 73.
Since the insertion speed of the magazine 3 is relaxed and the pushing speed of the magazine 3 is moderated, the pushing portion 27b of the differential rack 27 pushes the oblong hole 14h ′ of the drive rack 14 too much, and the drive rack 14 advances too much in the direction a. It can be prevented.

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

At the early stage when the drive rack 14 is driven in the direction a,
As described in FIG. 10, 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, the tray hook 10 moves in the a direction even when the drive rack 14 moves in the a direction. Even if you proceed to, you will not proceed in the i 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 first
The pushing part 27b of the differential rack shown
When the lock release lever 83 is pivoted back in the direction by the pulling spring 85, the tray 1 in the magazine 3 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. 4A.

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.

EFFECTS OF THE INVENTION As described above, according to the present invention, a thin portion is formed in a part of the lock release lever formed of a resin molded part, and U is provided at both ends thereof.
To provide a multi-disc player having a simple structure in which a U-shaped spring receiving portion is formed and a wire spring is inserted into the U-shaped spring receiving portion to prevent deterioration of the spring effect of the thin portion. Can be done.

[Brief description of drawings]

1 and 2 are an enlarged view and a perspective view of an essential part showing a mechanism of a multi-disc player according to an embodiment of the present invention, and FIG.
Fig. 4 is an exploded view of the mechanism, Fig. 4 is a plan view for explaining horizontal driving operation of the multi-disc player, Fig. 5 is a perspective view for explaining magazine locking and unlocking, and Fig. 6 is a vertical view of the loading base. FIG. 7 is a perspective view showing a driving structure, FIG. 7 is a perspective view showing an entire multi-disc player of an embodiment of the present invention, and FIG. 8 is a plan view illustrating another embodiment.
Front view and right side view, FIGS. 9 and 10 are perspective views for explaining the details thereof, and FIGS. 11 and 12 are perspective views and plan views for explaining the embodiment of the present invention. FIG. 13 is a perspective view showing a conventional multi-disc player. 1 ... Tray, 2 ... Disc, 3 ... Magazine, 4 ...
… Mechanism body, 5 …… Magazine base, 6 …… Magazine lock lever, 7 …… Magazine base board, 8 ……
Mounting shaft, 71 …… eject lever, 72 …… eject lever B, 74 …… magazine push spring, 75 …… lock base block, 78 …… lock lever, 80 …… tray set lever, 82 …… leaf spring, 83 ...... Unlock lever, 86 ……
Wire spring.

Claims (1)

[Claims] 1. A thin wall portion is formed at a part of a lock release lever for releasing a lock operation of a tray lock lever, and U-shaped spring receiving portions are formed at both ends thereof, and the U-shaped spring receiving portion is formed. A multi-disc player characterized in that a wire spring is inserted to prevent deterioration of the spring effect of the thin portion.