JPH01154361A - Multi-disk player - Google Patents

Abstract

PURPOSE:To obtain an inexpensive multi-disk player by opening and closing switches by means of switch pushing sections respectively provided on outer peripheries of a driving and differential racks and detecting each position of the racks. CONSTITUTION:When a magazine 3 is inserted into a magazine base 5, an eject lever 33 is pushed in the direction (a) and drives the pushing-out section 27b of a differential gear 27 in the direction (a). When the lever 33 drives the section 27b, a switch 30 is separated from the switch pushing section 27b of the differential rack 27 and turned off and another switch 29 is also separated from the switch pushing section 27e of the rack 27 and turned off. As a result, a motor is rotated and rotates a driving gear 15 and only the differential rack 27 is driven in the direction (a) and stopped in the state shown in the figure. When the differential gear 27 is driven by the motor and moves in the direction (a), the rack 27 passes by pushing up the rib section 6c of a magazine locking lever 6 with the slope of its pushing section 27b' provided with the slope.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disc player, and more particularly to a multi-disc player that can store a plurality of discs and can sequentially select any stored disc for continuous play. .

Conventional technology In recent years, various digital audio discs have been released.
Its usage is rapidly increasing, and various multi-disc players that can play 6 to 10 discs in sequence have been developed. Many of these multi-disc players are of the type that performs continuously while moving the entire optical pickup block, which reads signals using laser light, up and down. The mechanism used to do this was complicated and expensive.

The conventional multi-disc player mentioned above will be explained below.

FIG. 7 shows a conventional multi-disc player.

In FIG. 7, the disk holding section 101 of the tray 101
The disks 102 placed on the disks 102a are arranged in order on the shelves 103a formed in six stages of the magazine 103.

It is stored in a drawer and can be stored freely.

Reference numeral 104 denotes a mechanism body of the multi-disc player, and the magazine 103 is always stored in a fixed position in a magazine base 105 which is formed in a U-shape and is used to store a magazine.

106 is a magazine push lever, and the magazine 1 is always
The tension spring 1 is pushed in the A direction by the insertion of 03.
07, it is configured to push out toward the mouth.

Reference numeral 1o8 denotes a magazine lock lever for locking the magazine, and a recess 103b formed in the side wall of the magazine 103 is used as a base by a tension spring 109 to lock the magazine 10.
3 is configured to prevent extrusion toward the mouth.

Reference numeral 110 denotes a plunger, and when the magazine 103 is taken out, the base between the lock lever 108 and the recess 103b formed in the side wall of the magazine 103 is released by energization, and the magazine 103 is pushed out by the magazine push lever 1oθ. There is.

A speed control device 111 is configured to control the extrusion speed of the magazine 103 by pressing against the magazine extrusion lever 108 .

Reference numeral 112 denotes a tray footer, which is configured to slide toward the e-mouth while being guided by a guide shaft 114 provided on a loading base 113 for feeding the tray 101 to the performance start position.

Reference numeral 116 is a tray hook drive motor provided on the loading base, and the pulley 116 and belt 117 operate the tray hook 112 in the direction of the e-port, and the concave portion 101b provided in the tray 101 is connected to the tray hook 112 and the base. From magazine 103 to tray 1o1
It is structured so that it can be pulled out and stored.

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

121 is a screw and is a loading base 11
In order to raise and lower the loading base 113 vertically while holding it horizontally, the loading base 113 is engaged with female screw portions 122 provided at three places around the loading base 113 to raise and lower the loading base 113 up and down.

Reference numeral 123 denotes a timing belt for driving the three screws by meshing with a small gear 124 provided at the lower part of the three screws 121, and is configured to be driven by a lift drive motor 126.

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

When the magazine 103 containing the six disks 102 and the tray 1o1 is inserted into the magazine base 105, it is locked in place by the pushing force of the magazine push lever 106 and the magazine lock lever 108. Next, the loading base 113 is lifted and lowered by the lifting drive motor 1260 rotations, and the tray hook 112 and the tray 101 are moved up and down.
It stops at the height where the concave portion 1o1b of is the base.

Subsequently, the tray hook drive motor 116 rotates normally, the tray hook 112 pulls out the tray 101 in the A direction, and the center of the disk 102 is placed on the turntable 122.
When it reaches the center, it stops and begins playing.

When the performance ends, the tray hook drive motor 116 reverses, and the tray hook 112 pushes the tray 101 back in the direction of the arrow and stores it in the magazine 103.

When the plunger 110 is energized, the base between the magazine lock lever 108 and the recess 103b of the magazine 103 is released, and the magazine 103 is
06 toward the mouth, and can be taken out from the multi-disc player main body 104.

Problems to be Solved by the Invention However, in the above configuration, a strong lifting structure is required because the loading base 113 incorporating the heavy optical pickup block 119, tray hook drive motor, etc. is raised and lowered by the three screws 121. Moreover, the overall structure was complicated and expensive.

Also, since the entire loading base 113 is heavy,
It was also difficult to increase the speed of elevation.

Furthermore, since the magazine ejecting structure is composed of a combination of a plunger, a magazine ejecting lever, a speed control device, etc., there have been problems such as the generation of plunger noise and the stabilization of the ejecting speed.

In view of the above problems, the present invention consists of a heavy optical pickup block, tray hook, tray hook 1 drive motor, etc. on the main body side, thereby making the entire loading base lighter, increasing the lifting speed and simplifying the lifting structure. To provide an inexpensive, low-noise, high-speed multi-disc player that can push out a magazine by sharing a motor for driving a tray hook.

Means for solving the problems and technical means of the present invention for solving the above problems are as follows: 1
A drive rack that engages with a drive gear to take out a disk from a magazine, store and transport the disk, and a differential rack that is slidable by a certain amount in the longitudinal direction of the drive rack and pushes out the magazine, the drive rack and The switch is opened and closed by a switch push portion formed on the outer wall of the differential rack, and each position of the drive rack and the differential rack is detected.

For production The effect of this technical means is as follows.

In other words, the outer periphery of the lower moving rack that engages with the drive gear to take out disks from the magazine, store and transport them, and 5
The disk ejection position is opened and closed by a switch push part formed on the outer periphery of the differential rack, which is slidable a certain amount in the longitudinal direction of the active rack and pushes out the magazine.

It is possible to detect the storage position, magazine push-out position, and magazine insertion position.

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, a disk 2 placed on a disk holding portion 1a of a tray 1 is placed on a shelf 3 formed in six stages of a magazine 3.
They are arranged and stored in order in a, and can be pulled out and stored at will.

Reference numeral 4 denotes the mechanism body of the multi-disk brayer of the present invention, in which the magazine 3 always hits a stopper 6a formed on the magazine base 5 formed in a U-shape for storing a magazine. It is inserted up to the position.

Reference numeral 6 denotes a magazine lock lever that prevents the magazine 3 inserted into the magazine base 5 from coming out, and is configured so that it can rotate around a mounting shaft 8 on the magazine base board T provided at the bottom of the magazine base 6. has been done.

Reference numeral 9 denotes a lock lever pulling spring for rotating the magazine lock lever 6, and is provided between the spring hook pin 6a provided on the upper part of the magazine lock lever 6 and the spring hook part a provided on the magazine pace board a. energized.

6b is a hook formed at the tip of the magazine lock lever 6, which passes through the opening 6b provided in the magazine base 6, engages with the recess 3b formed in the side wall of the magazine 3, and locks the magazine 3. It is constructed to prevent it from popping out.

1o is a tray hook which is connected to the recess 1b of the tray 1 stored in the magazine 3 and pulls out the tray 1, and is used to bend the loading base 12 which is provided with tray guides 11 at both ends to guide the tray 1. A tray hook is provided on the block 13 and is configured to be able to slide along the portion 12a in the direction of the e-mouth.

Reference numeral 14 indicates a tray hook block 1 for driving the tray 1 in the e-inlet direction and storing the tray 1 on a skewer from the magazine 3.
3 in the E-port direction. This is a driving rack, and the guide parts 14a and 14b provided at the lower part are engaged with the bending part 41 of the mechanism main body 4, so that it can slide in the direction of the e-port.

Reference numeral 14c denotes a column having an upwardly concave cross section, which is provided at one end of the drive rack 14, and is configured so that the convex portion 13a of the tray hook block 13 can fit therein and slide up and down. FIG. 2 is an exploded view of the multi-disc player of the present invention. A shaft 15 rotates around a shaft 16 provided on the mechanism body 4, and engages with the teeth 14c of the drive rack to move the drive rack toward the e-mouth. This is the drive gear that drives the motor.

17 is an intermediate gear configured to mesh with the stationary gear 16 and the drive pulley 18 for deceleration;
It is configured to rotate around 9.

2o is a drive pulley 18 provided to rotate around a shaft 21, and a pulley 2 provided above a motor 22.
3 is a belt for transmitting the rotation of the motor 22 to the active pulley 18.

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

24 is a convex portion provided at the other end of the gear set lever 24, and as shown in FIG.
When the drive rack 14 is sent toward the mouth, the slope 14e of the convex portion 14d of the drive rack 14 is further pushed toward the mouth, thereby separating the missing teeth 14b of the drive rack 14 from the drive gear 16.

In this position, the tray hook 1o is fitted into the recess 1b of the tray 1 housed in the magazine 3 with a certain clearance, and is configured to be movable in the hone direction.

Reference numeral 27 denotes a differential rack for pushing the magazine 3 toward the mouth, and is slidably provided at the bottom of the drive rack 14. It engages with the drive gear 16 and is driven toward the mouth, so that the teeth 14q of the drive rack 14 The center line of the tooth 2a of the differential rack 27 and the center line of the tooth 2a of the differential rack 27 are configured to be on the same line in a plane.

27b is the surface of the elongated hole 14b of the drive rack 14.

This is a pushing part that pushes out the magazine 3 that projects upward, and the end 1 of the elongated hole of the constantly driven rack 14 is pushed out by the tension spring 28.
It is configured so that it can be drawn up to the 4th floor. At this time, the teeth 14g of the drive rack 14 and the teeth 27a of the differential rack 27 are configured so that their peaks and valleys match.

FIG. 3 (8) 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 connected to the switch push portion 27c provided on the differential rack 27. The switch 3o is configured in a positional relationship such that it is pressed to be in the ON state, and the switch 3o is in the OFF state.

When the drive gear 15 rotates in the direction of the arrow in FIG. 3(B), it first drives the differential rack 27 in the direction A, and then the differential rack 27 along with the drive rack 14 engages with the drive gear 16 and moves in the direction of the arrow. When the engagement with the differential rack 27 is completed and the drive rack 14 is further driven in the A direction, the end 27d of the differential rack 27 comes into contact with the stopper part 4C of the mechanism body 4 and stops, and the drive rack 14 is further driven. The differential rack 27 slides on the drive rack 14 as it moves in the direction A, and when the state shown in FIG.
This figure shows a state in which the center of the disk 2 placed on the disk 2 is stopped at the center of the turntable 32 of the known optical pickup block 31 provided on the mechanism body 4 as shown in FIG.

At this time, the switch 29 is in the OFF state, and the switch 30 is in the OFF state.
is configured in a positional relationship such that it is pressed by the convex portion 14d of the sounding rack 14 and becomes in the ON state.

Next, as shown by the arrow q in FIG.
The push-out portion 27b of 7 is pulled by the tension spring 28 and comes into contact with the elongated hole end 141 of the drive rack 14.

When the drive rack 14 is further driven in the direction toward the mouth, the differential rack 27 and the drive rack 14 are both engaged with the drive gear 15, and the engagement between the drive gear 15 and the drive rack 14 is disengaged as shown in FIG. 3 (8). When the drive rack 14 is further pushed toward the mouth by the gear set lever 24, the end 14j of the drive rack 14 comes into contact with the stopper 4d of the mechanism body 4 and stops.

Furthermore, when the r-movement gear 16 rotates in the direction of the arrow in FIG. The pushed part 27b' pushes the curved rib part 6C formed below the magazine lock lever 6, rotates the magazine lock lever 6 in the direction of the arrow, and causes the recess 3b formed in the side wall of the magazine 3. When the hook portion 6b formed at the tip of the magazine lock lever is released from the lock lever and the differential rack 27 is further driven in the opening direction, the push portion 33a of the eject lever 33 provided on the magazine base board 7 is released.
is pushed by the pushing part 27b of the differential rack 27 and pushes out the magazine 3 in the direction of the opening, resulting in the state shown in FIG. 3 (q).

The eject lever 33 is configured so that a shaft 34 provided under the magazine base board and a long hole 33b fit together so that it can slide a certain amount in the direction of the earth, and a bent portion 33c at one end is configured so as to push out the lower part of the magazine 3. There is.

At this time, the switch 29 is turned on by the switch pusher 278 of the differential rack 27, and the switch 30 is turned on by the switch pusher 27b of the differential rack 27.

When the magazine 3 is inserted into the magazine base 6 as shown in FIG. 3 p) and FIG. The hook portions b engage to lock the magazine 3 so that it does not come out toward the mouth.

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

At this time, the switch 30 is separated from the switch push part 27b of the differential rack 27 and turned OFF, and the switch 29 is also moved away from the switch push part 27θ of the differential rack 27 and turned OFF.
F, the motor 22 rotates, and the drive gear 15
is rotated in the direction of the arrow shown in FIG. 3, and only the differential rack 27 is driven in the direction A and stopped in the state shown in FIG. 3, 4.

When the differential rack 27 is driven by the motor 22 and moves in the A direction, the rib portion 6c of the magazine lock lever 6 is pushed up in the A direction by the slope of the pushing portion 2W, which has an inclined surface as shown in FIG. pass.

The magazine lock lever 6 is made of a springy acid resin such as polyacetal resin, and has a thin spring part ad.
When pushing up the rib portion θC in the
When passing through, the rib portion 6C is configured to return to the direction shown in FIG.

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

An intermediate gear 41 provided to rotate around the shaft 4o is connected to the shaft 4o.
A gear part 4 of an elevating cam 43 provided to rotate around 2
3a and the pulley gear 38.

In FIG. 5, reference numeral 44 denotes an elevating rack provided at the lower part of the loading base 12, and is configured to engage with the elevating cam 43 to move the loading base 44 up and down in the hone direction.

43b is a sensor wall portion formed in a ring shape at the lower part of the elevating cam, and a slit portion 43b' is formed therein.

Reference numeral 45 denotes a photoelectric switch, which is configured to count the number of revolutions of the elevating cam as it passes through the slit portion 43b'.

The spacing between the teeth of the elevating rack 44 is the same as the spacing between the shelves 3a of the magazine 3, and is configured such that one rotation of the elevating cam 43 advances one tooth.

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

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 passing through holes 12b provided on both sides of the loading base 12.

Reference numeral 6b denotes teeth provided at both ends of the magazine base 5, which are configured to mesh with the timing gear 47. Guide portions 48a, which are configured to protrude outward from the timing gear 47 at both ends of the gear shaft 48, are provided at both ends of the magazine base 6. The timing gear 4 is fitted into the guide groove 6C formed at both ends of the timing gear 4.
7 is constructed so that it does not come off from the tooth portion 5b of the magazine base.

Reference numerals 49 and 50 designate a lifting lever for raising and lowering the loading base 12 while holding it horizontally, and a lifting auxiliary lever, which are provided in pairs on each side of the loading base 12.

A shaft S1 provided on the loading base 12 is fitted into a hole 49a provided at one end of the elevating lever 49 for pivotal support, and a shaft 52 provided at the center of the elevating lever 49 is provided at the center of the elevating auxiliary lever 5o. The shaft 63 provided at the other end of the elevating lever 49 is fitted into the elongated hole 50a, and the elongated holes 54a and 54a' are provided in the mechanism body 4.
into the hole sob provided at one end of the lifting auxiliary lever 6o.
The shafts 55a and 55a' of the support parts 56 and 55' provided on the mechanism main body 4 are inserted and supported, and the shafts provided on the loading base 12 are inserted into the elongated holes 50c provided at the other end of the elevating auxiliary lever 60. By inserting a 6θ angle, when the shaft 61 is driven in the direction, the shaft 62 of the elevating lever 49 lifts the upper part of the elongated hole 50a of the elevating auxiliary lever 60, thereby increasing the amount by which the shaft 61 is driven in the direction. The elongated hole 60C of the lifting auxiliary lever 60 drives a shaft 6e provided on the loading base 12 in the backward direction, thereby holding the loading base 12 horizontally. FIG. 6 shows a multi-disc player according to the present invention. The front panel 68 of the player housing 67 is provided with an opening 58a for mounting the magazine 3 for storing discs in the player housing 67.

Further, on the front panel 68, there is a group of operation buttons 69 for operating the multi-disc player, and a display section e.
4 is the main body of the mechanism of the multi-disc delayer of the present invention, and is constructed within the player housing 67.

The operation of the multi-disc player configured as described above will be explained below with reference to FIGS. 1 to 6.

First, when the disc to be played is specified by operating the operation button group 69 shown in FIG. loading base 1
2 rises in the convex direction and stops at the designated position of the disk. This position is determined by the count of the photoelectric switch 45 in combination with a known microcomputer.

Subsequently, 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 engagement with the drive gear 16. At 060, the switch 30 is turned on and the tray stops in the state shown in FIG. 3B. hook block 1
3 are both driven in the A direction by the fitting of the convex portion 13a and the pillar portion of the drive rack 14, so that the center of the turn tape I of the optical pickup block 31 and the center of the disk 2 on the tray 1 almost coincide with each other. tray hook up to 10
pulls out tray 1.

Next, a reverse voltage is supplied to the lifting motor 36, and the loading base 12 is lowered in two directions, and after pressing the limit switch 4b, it is further lowered by a certain amount and then stopped. This lowering position is determined by the count number of the photoelectric switch 45 in combination with a known microcomputer.

At this time, the disc 2 is fed onto the turn tape/L'32 of the optical pick-up block 31, and playing is started with a certain amount of gap maintained between the disc 2 and the tray 1.

When the performance is finished, a driving voltage is supplied to the lifting motor 35 by a combination of a known end detection means and a microcomputer, and the loading base 12 is raised in the convex direction to the first position stored in the computer. Stop.

Next, a reverse voltage is supplied to the motor 22 and the drive rack 14
, the differential rack 27 is driven in the mouth direction, as shown in FIG. 3 (8).
It stops at the position and the switch 29 turns on. At this time, the tray 1 and the disk 2 are stored in the magazine 3.

Subsequently, a reverse voltage is supplied to the lifting motor 36, the loading base 12 is lowered in two directions, and the limit switch 4e is turned on to stop and complete the operation. By specifying the operation button group 69, it is possible to sequentially play the six discs in the magazine, to play a program of only a favorite disc, to play one disc repeatedly, etc. in combination with a known microcomputer. can.

When the eject button of the operation button group 59 shown in FIG. 6 is operated when taking out the magazine 3 from the player housing 57, only the operating rack 27 is driven in the opening direction as shown in FIG. 3 (q), and then the magazine lock lever is activated. After θ and the lock of the magazine 3 are released, the eject lever 33 is pushed toward the mouth, and the magazine 3 can be pushed out toward the mouth and taken out.At this time, both switches 29 and 30 are turned on.
state.

When the magazine 3 is inserted into the player housing 67, the magazine 3 pushes the eject lever 33 in the A direction as shown in FIG. 9. As shown in FIG. 3 (8), the switch 29 is moved away from the switch pusher 2 of the differential rack 27 to turn it OFF.
The differential rack 27 is driven in the A direction until it is turned ON by 7c.

Effects of the Invention As described above, according to the present invention, the drive rack is provided so as to be slidable by a certain amount in the longitudinal direction of the outer periphery of the drive rack that engages with the drive gear to take out the disks from the magazine, store and transport them, and push out the magazine. The switch can be opened and closed by a switch push part formed on the outer periphery of the differential rack to detect the disk ejection position, the storage position, the magazine push-out position, and the magazine insertion position, and the mounting position of the switch that performs the detection. A multi-disc player with a simple structure that can be placed on the same plane can be provided at low cost.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the mechanism of a multi-disc player according to an embodiment of the present invention, Fig. 2 is an exploded view of the same mechanism, and Fig. 3 is a plan view illustrating the horizontal drive operation of the multi-disc player. , FIG. 4 is a perspective view for explaining magazine locking and release, FIG. 5 is a perspective view showing the vertical drive structure of the loading base, and FIG. 6 is an overall view of the multi-disc derailleur according to the embodiment of the present invention. FIG. 7 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 57...Magazine base board,
8...Mounting shaft, 9...Lock lever pull spring, 10...Tray hook, 11...
...Tray guide, 12...Loading base, 13...Tray hook block, 14...
... Drive rack, 16 ... Drive gear, 1
6...Shaft, 17...Intermediate gear, 18
・・・・・・Drive pulley, 19・・・Shaft, 2゜・・・Belt, 21・・・Shaft, 22・River・
・Motor, 23...Pulley, 24...
・・Gear set lever 125 ・・Shaft, 2e・
... Gear set spring, 27 ... Differential rack, 28 ... Extension spring, 29 ... Switch, 30 ... Switch, 31.・・・・・・
Optical pickup block, 32...Turntable, 33...Eject lever, 34.
·shaft.

Claims (1)

[Claims] The drive rack includes a drive rack that engages with a drive gear to take out, store and transport disks from a magazine, and a differential rack that is slidable by a certain amount in the longitudinal direction of the drive rack and pushes out the magazine. A multi-disc player characterized in that the switch is opened and closed by a switch push part formed on the outer periphery of the differential rack, and each position of the drive rack and the differential rack is detected.