JP3118952B2 - Tray base mounting mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player capable of loading a disc and playing back the disc continuously, and selecting and playing back a tune arbitrarily. The present invention relates to a moving tray base mounting mechanism.

[0002]

2. Description of the Related Art In recent years, there has been a demand for a simpler configuration for mounting a tray base of a disk player for mounting and reproducing a disk with a small number of parts, easy mounting, and a small number of mounting steps.

An example of the above-described conventional tray-based mounting mechanism will be described with reference to the drawings.

FIG. 16 is an exploded perspective view showing a structure of a disk player using a conventional tray-based mounting mechanism, FIG. 17 is a sectional view taken along line AA of FIG. 16, and FIG. 18 is a line BB of FIG.
It is sectional drawing.

[0005] Referring to FIGS.
Numeral 0 is housed in the hole 51a of the panel chassis 51, and the left and right guide portions 50a of the tray base 50 are fitted into ribs 51b provided on the left and right of the panel chassis 51 so as to be movable in the directions of arrows AB. Has become. The left and right 52 are holding plates, and the amount of upward movement of the tray base 50 in combination with the left and right sliding surfaces 50b of the tray base 50 (up and down play).
It is regulated and prevented from coming off, and is fixed to the panel chassis 51.

Reference numeral 53 denotes a rotary tray. As shown in FIG. 17, a claw portion 50c of a tray base 50 and a receiving rib 50 are provided.
The rib 53c abuts the outer periphery 54b of the three rollers 54 having the shaft portions 54a rotatably attached to the holes 50d and the holes 50i, and the holes 53d are connected to the shaft 50e of the tray base 50.
Are mounted so as to be rotatable in the directions of arrows CD, and a notch 53b is provided at the center of the five disk mounting portions 53a.

At this time, in order to receive the rotary tray 53 stably, the roller 54 and the ribs 53c of the rotary tray 53 as far as possible from the notch 53b of the rotary tray 53 as much as possible. It is arranged on the outer periphery (FIG. 17).
L1 dimension part).

The motor 55 mounted on the tray base 50 changes the teeth 53e of the rotary tray 53 to the teeth of the worm 60 via a reduction mechanism comprising a motor pulley 56, a belt 57, a worm pulley 58, a worm shaft 59, and a worm 60. By driving the unit 60a, the rotary tray 53 is rotated in the direction of the arrow CD. As shown in FIG. 18, the worm 60 is pressed together with the worm pulley 58 into the worm shaft 59, and the worm shaft 59 is attached to the bearing 5 of the tray base 50.
It is rotatably mounted at 0f. 61 is a disk.

The motor 62 mounted on the panel chassis 51 is connected to a rack 50g provided on the lower surface of the tray base 50 via a reduction mechanism including a motor pulley 63, a belt 64, a pulley gear 65, and a drive gear 66 to drive the drive gear 66. The tray base 50 is moved in the direction of the arrow AB by driving the toothed portion 66a.

Numeral 67 denotes a disk reproducing unit, numeral 67a denotes a turntable for carrying the disk 61 placed on the rotary tray 53, and numeral 67b denotes a panel chassis 51.
The disc reproducing section 67 is attached to the supporting section 51c so as to be rotatable in the directions of arrows EF. The pin 67c is connected to the cam 68a of the lifting gear 68,
The rotation of the lifting gear 68 causes the disc reproducing unit 67 to move to the E-
It rotates in the F direction.

The motor 69 rotates the elevating gear 68 via a reduction mechanism including a motor pulley 70, a belt 71, and a pulley gear 72.

Reference numeral 73 denotes a notch 5 of the rotary tray 53.
3b is a clamper that carries the disc 61 between the turntable 67a of the disc reproducing section 67 and the clamp plate 7 attached to the panel chassis 51.
4 is rotatably attached to the hole 74a. In addition,
50h of the tray base 50 is an opening through which the disc reproducing unit 67 enters.

The operation of the tray base mounting mechanism configured as described above will be described below. First, in order to place the disk 61 on the rotary tray 53, when a command is issued to put the tray base 50 and the rotary tray 53 outside the panel chassis 51 (that is, the disk loading / unloading position), the motor 62 rotates and the motor pulley 63 ,
The tooth portion 66a of the drive gear 66 drives the rack 50g of the tray base 50 in the direction of the arrow A via the reduction mechanism including the belt 64, the pulley gear 65, and the drive gear 66.
The tray base 50 moves in the direction A, and stops at the disk mounting / dismounting position where the disk mounting portion 53a of the rotary tray 53 comes out of the panel chassis 51. Also at this time, since the sliding surface 50b of the tray base 50 is held by the pressing plate 52, the amount of upward movement (up and down play) is restricted and the tray base 50 does not come off.

Then, the disk 61 is mounted on the disk mounting portion 53a of the rotary tray 53. (In this embodiment, two discs can be placed at the same time.) When the next disc 61 is placed on the remaining disc placement portion 53a of the rotary tray 53, the motor 55 is rotated by a command, and the motor pulley 56 and the belt 57 are moved. , A worm pulley 58, a worm shaft 59, and a worm 60 through a speed reduction mechanism, the tooth portion 53 a of the rotary tray 53 is driven by the tooth portion 60 a of the worm 60 in the direction of arrow C-D. Together with the disc mounting portion 53a
Rotate in the direction of arrow CD in each section of.

Then, since the disk mounting portion 53a on which the disk 61 has not yet been mounted is stopped at a position outside the panel chassis 51, the next disk 61 can be mounted. By repeating this, the disks 61 can be mounted on the disk mounting portions 53a of all the rotary trays 53.

Next, when a command to reproduce the disc 61 is issued, the motor 62 first rotates in the opposite direction, so that the tray base 50 also moves in the direction of the arrow B opposite to the above, and the panel chassis 51 Stored inside (that is,
Stop at the disc storage position).

Next, the motor 55 rotates to move the disk 61 to be reproduced to the reproduction position.
The rotary tray 53 also rotates in the direction of the arrow CD, and stops when the designated disk 61 comes below the clamper 73 which is the playback position. Next, the motor 69 rotates to rotate the elevating gear 68 via the reduction mechanism including the motor pulley 70, the belt 71, and the pulley gear 72, so that the elevating gear 68
Disc reproducing unit 6 connected by the cam unit 68a
7, the pin 67c moves, and the disc reproducing unit 67 moves the arrow E
The turntable 67a and the clamper 73
And the reproduction is started with the disc 61 being held between them.

When the reproduction is completed, the next disk 6
First, the motor 69 rotates in the opposite direction to rotate the disk reproducing unit 67 in the direction of arrow F in order to reproduce the disk 1.
The disk 61 is rotated in the -D direction to move the next disk 61 to the playback position, and the disk playback unit 67 is rotated in the direction of arrow E to play the disk 61 in the same manner as described above. By repeating this, all the disks 61 placed on the rotary tray 53
Can be played.

Next, when the reproduction of the disk 61 is completed and the disk 61 is to be replaced or removed, when a command is issued, the motor 69 first rotates to rotate the disk reproducing unit 67 in the direction of arrow F, and then the motor 62 Rotation of the tray base 50
Moves in the direction of arrow A, and the disk 61 placed on the rotary tray 53 comes out of the panel chassis 51 (that is, the disk 61 comes to the disk attaching / detaching position). The disk 61 can be replaced or removed while rotating the disk.

When exchanging or taking out another disc 61 while the disc 61 is being reproduced, when a command is issued, the rotation of the motor 62 causes the tray base 50 to move in the direction of arrow A, and the panel chassis 51 to move. The disk 61 placed on the rotary tray 53 comes out (ie, comes to the disk loading / unloading position) outside the disk drive. Or you can take it out.

[0021]

However, in the conventional tray base mounting mechanism as described above, in order to regulate the amount of movement of the tray base 50 in the upward direction, to prevent the tray base 50 from coming off, and to allow the tray base 50 to move in the front-rear direction. The left and right holding plates 52 are required, so that the number of parts is large, the mounting is complicated, and the number of mounting steps is large.

In view of the above-mentioned conventional problems, the present invention can regulate the amount of movement of the tray base in the upward direction, prevent detachment, and move the tray base in the front-rear direction with a small number of parts. It is an object of the present invention to provide a tray-based mounting mechanism that can perform the above-mentioned operations.

[0023]

In order to solve the above-mentioned problems, a tray base mounting mechanism according to the present invention is provided with a sliding surface on both sides of a tray base and claws arranged alongside the sliding surface, and a left and right guide as a fixed portion. The claw of the tray base is inserted into the eaves of the tray base.When the tray base is in the disc loading / unloading position, the sliding surface of the tray base and the eaves of the guide are linked, and the claw of the tray base is visible from the outside. The sliding surface of the tray base and the eaves of the guide are connected even when the tray base is in the disk storage position.

[0024]

According to the present invention, as described above, a sliding surface is provided on the left and right sides of a tray base and claws arranged in parallel with the sliding surface, and the claw portions of the tray base are inserted into eaves of left and right guides which are fixed portions. When the tray base is in the disc loading / unloading position, the sliding surface of the tray base and the eaves of the guide are combined, and the claws of the tray base are not visible from the outside. Even at the position, the sliding surface of the tray base and the eaves of the guide are linked, so that the number of parts can be reduced and the amount of movement of the tray base in the upward direction can be controlled and it can be prevented from disengaging and moving in the front-rear direction. And installation is easy, and the number of installation steps can be reduced.

[0025]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a tray base mounting mechanism according to the present invention.

FIG. 1 is a perspective view showing an entire disc player using a tray base mounting mechanism according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a portion moving in the direction of arrows AB. 3 is an exploded perspective view of a portion that does not move, FIG. 4 is a sectional view taken along line AA of FIG. 2, FIG. 5 is a sectional view taken along line BB of FIG. 2, FIG. 8 is a sectional view taken along line DD of FIG. 2, FIG. 9 is an exploded perspective view of a mechanism block, FIG. 10 is a detailed view of a closed lock gear, and FIG. 11 is a detailed view of an open lock gear. 12 is an operation explanatory view of the mechanism block, FIG. 13 is a detailed view thereof, FIG. 14 is a timing chart of the mechanism block, and FIG. 15 is an operation explanatory view of the closed lock gear and the open lock gear.

1 to 15, the tray base 1 is housed in a hole 3a of a panel 3 fixedly connected to a chassis 2, and as shown in FIGS. 1a and the sliding portion 4a of the guide L4, and the rib 1b and the sliding portion 5a of the mechanical base 5 are fitted together, and in the vertical direction, the right and left receiving portions 1c of the tray base 1, the ribs 4b of the guide L, and the ribs of the guide R due to their weight. 6
a comes into contact, and is movable in the direction of arrow AB. At this time, in the tray base 1, the claw portions 1d (two right and left portions) and the sliding surfaces 1e (left and right) are slightly spaced from the eaves portion 4c of the guide L4 and the eaves portion 6b of the guide R6 (FIG. 4).
5 (L2 dimension portion in FIG. 5), thereby restricting the upward movement amount and preventing disengagement.

The ribs 1a of the tray base 1 coincide with the vertical walls of the sliding surface 1e, so that no sink marks or the like appear on the external surface (the surface A in FIG. 4).

The tray base 1 is assembled at the position shown in FIG. 6A, that is, at the position where the claw 1d of the tray base 1 and the eaves 4c of the guide L4 and the eaves 6b of the guide R6 match. By pressing 1 in the direction of arrow E, the claw portion 1d of the tray base 1 is bent in the direction of arrow F in FIG. The guide L
The guide 4 and the guide R6 are fixed to the chassis 2. 7 is an exterior case.

A rotary tray 8 has a hole 8a fitted into the shaft 1f of the tray base 1 and a claw 1g and a receiving rib 1h of the tray base 1 as shown in FIG.
The rib 8b abuts on the outer circumference 9b of the three rollers 9 to which a is rotatably mounted, and is rotatably mounted in the direction of arrow C-D. At the center of the five disk mounting portions 8c, A notch 8d is provided.

At this time, the roller 9 is
Rotary tray 8
Are arranged on the outer periphery of the rotary tray 8 as much as possible together with the ribs 8b of the rotary tray 8 within a range invisible from the notch 8d. (L1 dimension part in FIG. 7)
1i is a rib for preventing the roller 9 from coming off,
A slight gap (L3 in FIG. 7) is provided on the side surface of the outer circumference 9b of the roller 9.
(Dimensions).

A worm 10 meshes with the spur gear 8e of the rotary tray 8 to rotate the rotary tray 8 in the direction of arrow CD. A worm shaft 11 is pressed into the center of the worm, as shown in FIG. The shaft is a J-shaped groove 12a of the worm base 12 fixed to the tray base 1.
And the bearing portion 12b are rotatable, and the worm 10
At an angle of the advance angle θ. The thrust surface 10a of the worm 10 is
The thrust amount is regulated in combination with the side surface of the J-shaped groove 12a and the side surface of the U-shaped rib 12c. The bearing 1
2b can be bent in the direction of arrow G when the worm shaft 11 is inserted.

Reference numeral 13 denotes a worm pulley whose center is press-fitted into the worm shaft 11, and a belt 14, a motor pulley 15
Through a motor 16 attached to the worm base 12. The worm shaft 11 fits into the specified position of the J-shaped groove 12a of the worm base 12 (the end of the J-shape) by hanging the belt 14. Reference numeral 17 denotes a disk.

The mechanism block is as shown in FIG.
The motor 18 attached to the mechanical base 5 includes a motor pulley 19, a belt 20, a pulley gear 21, and a reduction gear 22.
The elevating gear 23 is driven via a speed reduction mechanism composed of
By driving 4a, the control gear 24 is rotated. The control gear 24 is provided with toothless gears 24b and 24c whose teeth are missing in a certain range. The toothless gear 24b is a tooth 25a of a drive gear A25, and the toothless gear 24c is a tooth of a drive gear B26. It is designed to mesh with the portion 26a. Further, the teeth 25a of the drive gear A25 and the teeth 26b of the drive gear B26 also mesh with each other.
The teeth 25b of the drive gear A25 mesh with the rack 1j of the tray base 1 to move the tray base 1 in the AB direction. Each gear is rotatably attached to the mechanical base 5.

Reference numeral 27 denotes a switch for detecting the position of the control gear 24, and the knob 27a operates in conjunction with the inside 24d and the hole 24e of the upper surface of the control gear 24.

Reference numeral 28 denotes a switch for detecting the position of the tray base 1, and a switch 2 is provided by a P base 29 for connection.
7, is fixed to the mechanical base 5 together with the motor 18.

Numeral 30 denotes a disk reproducing unit, numeral 30a denotes a turntable which carries and rotates the disk 17 placed on the rotary tray 8, numeral 30b denotes an optical pickup for reading the signal of the disk 17, and shaft 30c denotes the mechanical base 5. The disc reproducing unit 30 is attached to the supporting unit 5b so as to be rotatable in the direction of the arrow HI. The pin 30d is connected to the cam portion 23b of the lifting gear 23,
The rotation of the elevating gear 23 causes the disk reproducing unit 30 to rotate in the direction of the arrow HI.

Reference numeral 31 denotes a cutout 8d of the rotary tray 8.
, The turntable 30 of the disc reproducing unit 30
a clamper that supports and rotates the disk 17 between the clamper and a. The clamper is rotatably attached to a hole 32a of a clamp plate 32 fixed to the mechanical base 5. Note that 1k of the tray base 1 is an opening through which the disc reproducing unit 30 enters.

Reference numeral 33 denotes a close lock gear in which a boss 33a is rotatably mounted on the shaft 11 of the tray base 1. The rack 33b is formed as an extension of the rack 1j of the tray base 1 as shown in FIG. The end teeth 33c of the rack portion 33b overlap the end teeth 1m of the rack 1j of the tray base 1 in a planar manner. As shown, the end teeth 1m of the rack 1j have a shape with one side cut. Reference numeral 33d denotes a gear centered on the boss 33a, which meshes with the teeth 25b of the drive gear A25 following the rack 33b.
After the movement of the tray base 1 in the direction of the arrow AB due to the rotation of the end, the close lock gear 33 is rotated in the direction of the arrow JK. Accordingly, the square teeth 33e are formed by combining the rack portion 33b and the gear 33d. Reference numeral 33f denotes an arc-shaped rib centered on the boss 33a, and the toothed portion 25 of the drive gear A25 when rotating in the direction of arrow JK.
b, and a gear 33d of the close lock gear 33 and a driving gear together with the stopper 1n of the tray base 1 which is in contact with the front end of the slide portion 5a of the mechanical base 5 at this time. The meshing pitch of the tooth portions 25b of A25 is appropriately maintained. Reference numeral 33g denotes a square pin which extends downward through the hole 1o of the tray base 1, and rotates the close lock gear 33 in the J direction in combination with the rib 5c of the mechanical base 5. Reference numeral 33h denotes a long hole for preventing rotation in the direction of arrow JK, which comes into contact with the pin 1p of the tray base 1. A spring hook 33i is urged to rotate in the direction of arrow K by a spring 34 attached to the spring hook 1q of the tray base 1.

An open lock gear 35 has a boss 35a rotatably attached to the shaft 1r of the tray base 1. The rack 35b is formed as an extension of the rack 1j of the tray base 1 as shown in FIG. The end teeth 35c of the rack portion 35b overlap the end teeth 1s of the rack 1j of the tray base 1 in a planar manner. The end teeth 1s of the rack 1j have a shape with one side cut as shown in the figure. Reference numeral 35d denotes a gear centered on the boss 35a, which meshes with the teeth 25b of the drive gear A25 following the rack 35b.
After the movement of the tray base 1 in the direction of the arrow AB due to the rotation of the end, the open lock gear 35 is rotated in the direction of the arrow LM. Therefore, the square teeth 35e are formed by combining the rack 35b and the gear 35d. Numeral 35f is an arcuate rib centered on the boss 35a, and when rotating in the direction of the arrow LM, the teeth 25 of the drive gear A25.
and a gear 35d of the open lock gear 35, together with the stopper 1t of the tray base 1 which is in contact with the rear end of the slide portion 5a of the mechanical base 5 at this time. The meshing pitch of the teeth 25b of the gear A25 is appropriately maintained. 35g is a square pin which extends downward through the hole 1u of the tray base 1 and is linked with the rib 5d of the mechanical base 5 so that the open lock gear 35 does not rotate in the M direction except when necessary. It has become. 35h is the arrow LM
It is an elongated hole for preventing rotation in the direction, and comes into contact with the pin 1v of the tray base 1. Reference numeral 35i denotes a downwardly extending rib which, when rotated in the direction of the arrow M, operates in conjunction with the knob 28a of the switch 28 of the mechanism block.

The operation of the tray base mounting mechanism configured as described above will be described below. First, in order to place the disk 17 on the rotary tray 8, the tray base 1 and the rotary tray 8 are moved from the initial state shown in FIGS. 6C, 14B and 15A to the panel 3. When a command is issued to output to the outside (that is, the disk attaching / detaching position), the motor 18 rotates in the direction of arrow a as shown in FIGS.
Since the elevating gear 23 is driven in the direction a through the reduction mechanism including the pulley gear 21 and the reduction gear 22, the control gear 2
4 also rotates in the direction a, and the toothless gear 24b is driven by the drive gear A25.
, And the drive gear A25 rotates in the direction a.

Then, the close lock gear 33 rotates in the J direction from the state shown in FIG. 15A, and changes to the state shown in FIG. 15C through FIG.
3h comes into contact with the pin 1p of the tray base 1 to stop the rotation in the J direction, and the rack portion 33 of the close lock gear 33
b and the rack 1j of the tray base 1 are aligned on the same line, and the driving of the drive gear A25 in the direction a is shifted from the gear 33d to the rack portion 33b, so that the tray base 1 moves in the direction of arrow A next.

In the open lock gear 35, the square pin 35g is engaged with the rib 5d of the mechanical base 5 so that the rotation in the direction of arrow M is restricted and the open lock gear 3
From the state where the rack portion 35b of No. 5 and the rack 1j of the tray base 1 are substantially aligned on the same line, the rack portion 35b meshes with the tooth portion 25b of the drive gear A25, resulting in FIG.

At this time, the end teeth 1s of the rack 1j of the tray base 1 have a shape in which one side is cut as shown in the figure, so that the open lock gear 35 is slightly rotated in the direction of arrow M, and the tray is rotated. End teeth 1s of rack 1j of base 1 and end teeth 35c of rack portion 35b of open lock gear 35
Does not hinder the engagement of the drive gear A25 with the teeth 25b.

Then, the stopper 1t of the tray base 1 comes into contact with the rear end of the slide portion 5a of the mechanical base 5 so that the movement of the tray base 1 in the direction of arrow A is completed, and the open lock gear 35 is connected to the square pin 35g. Mechanical base 5
And the drive gear A25 moves in the direction a from the rack portion 35b to the gear 35d, so that the drive gear A25 rotates in the direction of arrow M and the slot 35h is inserted into the pin of the tray base 1. The state shown in FIG. 15 (E) comes into contact with 1v,
Since the rib 35i of the open lock gear 35 presses the knob 28a of the switch 28, the switch 28 is turned on, and the rotation of the motor 18 stops.

This state is the disk mounting / dismounting position shown in FIGS. 6 (B), 14 (A) and 15 (E). At this time,
As shown in FIG. 6 (B), the claw portion 1d of the unsightly tray base 1 is housed inside the panel 3 so as not to appear on the outside. Also, at this time, the tray base 1
Eaves 4c of guide L4 and eaves 6 of guide R6.
The restriction of the amount of upward movement of b and the prevention of disengagement are formed not by the weak claw portion 1d but by the sliding surface 1e having sufficient strength. Further, the open lock gear 35 and the drive gear A2
5 indicates that the tray base 1 has an arrow B even when an external force is applied.
Locked to prevent movement in the direction.

Then, the disk 17 is mounted on the disk mounting portion 8c of the rotary tray 8. (In this embodiment, two discs can be placed at the same time.) When placing the next disc 17 on the remaining disc placement section 8c of the rotary tray 8, the motor 16 rotates when a command is issued, and the motor pulley 15 The worm 10 drives the spur gear 8e of the rotary tray 8 in the direction of the arrow CD through the speed reduction mechanism including the belt 14 and the worm pulley 13, so that the rotary tray 8 is mounted on the disk together with the roller 9 in the direction of the arrow CD. The disk 8 rotates every section of the mounting portion 8c and stops when the disk mounting portion 8c on which the disk 17 has not yet been mounted is outside the panel 3, so that the next disk 17 is mounted. By repeating this, the disks 17 can be mounted on the disk mounting portions 8c of all the rotary trays 8.

At this time, the roller 9, the claw portion 1 g of the tray base 1 and the receiving rib 1 h are not visible from the notch 8 d of the rotary tray 8 as an external appearance, and even if a force due to dropping during transportation is applied. The roller 9 does not come off the tray base 1 because the side surface of the outer periphery 9b comes into contact with the rib 1i.

Next, when a command is issued to put the tray base 1 and the rotary tray 8 inside the panel 3 (that is, the disc storage position), the motor 18 first rotates in the direction b opposite to the above, and The gear 23, the control gear 24, and the drive gear A25 also rotate in the direction b opposite to the above.

Then, the open lock gear 35 rotates in the L direction from the state of FIG. 15 (E) to the state of FIG. 15 (D), and the elongated hole 35h of the open lock gear 35 contacts the pin 1v of the tray base 1. Then, the rotation in the L direction is stopped, and the rack portion 35b of the open lock gear 35 and the rack 1j of the tray base 1 are aligned on the same line, and the drive gear A2
5 in the direction b moves from the gear 35d to the rack 35b, so that the tray base 1 moves in the direction of arrow B next. Accordingly, the square pin 35 of the open lock gear 35
Since g is connected to the rib 5d of the mechanical base 5, the rotation of the open lock gear 35 in the direction of the arrow M is restricted.

When the tray base 1 further moves in the direction B, the square pin 3
3g contacts the rib 5c of the mechanical base 5, the close lock gear 33 rotates in the J direction, and the rack portion 33b of the close lock gear 33 and the rack 1 of the tray base 1 are rotated.
From the state where j is substantially aligned on the same line, the rack portion 33b meshes with the tooth portion 25b of the drive gear A25, and FIG.
become.

At this time, the end teeth 1m of the rack 1j of the tray base 1 have a shape with one side cut as shown in the figure, so that the close lock gear 33 slightly rotates in the direction of arrow K, End teeth 1m of the rack 1j of the base 1 and end teeth 33c of the rack portion 33b of the close lock gear 33
Does not hinder the engagement of the drive gear A25 with the teeth 25b.

Then, the stopper 1n of the tray base 1 comes into contact with the front end of the slide portion 5a of the mechanical base 5, so that the movement of the tray base 1 in the direction of arrow B is completed, and the driving of the drive gear A25 in the direction b is performed by the rack. Since the shift from the portion 33b to the gear 33d, the close lock gear 33 is
15 (B).

Then, the toothless gear 24b of the control gear 24 is disengaged from the tooth portion 25a of the drive gear A25, and the drive gear A25 is not driven. The hole 24e of the control gear 24 is connected to the knob 27a of the
When the WN side is turned off, the switch 27 is reversed and rotated in the direction a, and when the DOWN side of the switch 27 is turned on again,
That is, since the rotation of the motor 18 stops in the state of FIG. 14B, the rotation of the control gear 24 also stops.

On the other hand, the close lock gear 33 is disengaged from the toothless gear 24b of the control gear 24 and the tooth 25a of the drive gear A25 by the urging force of the spring 34.
The drive gear A25 is further rotated in the K direction together with the drive gear A25, and the state shown in FIG. 15A is reached in which the elongated hole 33h contacts the pin 1p of the tray base 1. This state is shown in FIG.
(C), the initial state shown in FIG. 14 (B) and FIG. 15 (A), and also the disk storage position.

At this time, the stopper 1n of the tray base 1 is in contact with the front end of the slide portion 5a of the mechanical base 5, and the circular rib 33f of the close lock gear 33 is in contact with the ring-shaped rib 25c of the drive gear A25. As a result, the gear 33d of the close lock gear 33 and the drive gear A
Since the engagement pitch of the 25 teeth 25b is properly maintained, the rotation of the close lock gear 33 in the direction of the arrow K can be completed with a small urging force of the spring 34. Further, the tray lock 1 is locked by the close lock gear 33 and the drive gear A25 so that the tray base 1 does not move in the direction of the arrow A even when a force due to dropping during transportation or the like is applied, as shown in FIG. And tray base 1
The restriction of the amount of upward movement and the prevention of disengagement from the eaves 4c of the guide L4 and the eaves 6b of the guide R6 are formed not by the weak claw 1d but by the sliding surface 1e having sufficient strength. .

Further, if the power is turned off while the tray base 1 is moving in the direction of the arrow AB, the tray base 1 temporarily assumes the position shown in FIG.
Even if external force may be applied to the tray base 1 as shown in FIG. 5, the claw portion 1d of the tray base 1 has the fulcrum B located outside the fulcrum A (opposite side of the arrow F direction). Since it does not rotate in the F direction, the upward movement of the claw portion 1d of the tray base 1, the eaves portion 4c of the guide L4, and the eaves portion 6b of the guide R6 and the prevention of disengagement remain.

Next, when a command is issued to reproduce the disk 17, the motor 18 first rotates in the direction b from the state shown in FIG. 14B as shown in FIGS. The gear 24 also rotates in the direction b. Then
The pin 30d of the associated disc reproducing unit 30 is moved by the cam portion 23b of the elevating gear 23, and the disc reproducing unit 30 rotates in the direction of arrow H to move the disc 17 between the turntable 30a and the clamper 31. Carry. Thereafter, the connection between the control gear 24 and the knob 27a of the switch 27 is changed from the hole 24e to the inside 24d of the upper surface, and the switch 27
Is turned ON, and the rotation of the motor 18 is stopped, so that the rotation of the lifting gear 23 and the control gear 24 is also stopped.
The state becomes 4 (C). Then, the reproduction of the disk 17 is started.

When the reproduction is completed, the motor 18 is first moved from the state shown in FIG.
Rotates in the direction a opposite to the above, so that the elevating gear 23 and the control gear 24 also rotate in the direction a, and the disc reproducing unit 30 rotates in the direction of arrow I. Then, the connection between the control gear 24 and the knob 27a of the switch 27 is changed from the hole 24e to the inside upper surface 24d on the opposite side from the above, and the DOWN
14 is turned ON, and the rotation of the motor 18 is stopped, so that the rotation of the elevating gear 23 and the control gear 24 is also stopped.
The state shown in FIG.

Thereafter, the rotary tray 8 is rotated in the direction of the arrow CD by the rotation of the motor 16 and the next disk 17 is moved below the clamper 31 which is the reproduction position. 14, the disk reproducing unit 30 rotates in the direction of arrow H, and
The state of (C) is reached, and the disk 17 is reproduced. By repeating this, all the disks 17 placed on the rotary tray 8 can be reproduced.

Next, in the state where the disk 17 is being reproduced, that is, in the state of FIG. 14C, when exchanging or taking out another disk 17, first, when a command is issued, the motor 18 b
, The lifting gear 23 and the control gear 24 also rotate in the direction b. Then, the missing gear 2 of the control gear 24
4c begins to mesh with the teeth 26a of the drive gear B26,
The tooth 26b of the drive gear B26 is the tooth 2 of the drive gear A25.
Since the drive gear 5a is driven, the drive gear A25 rotates in the direction a.

Then, as described above, the tray base 1 moves from the state of FIG. 15A to the direction of arrow A via FIGS. 15B and 15C, and the state shown in FIG. Later, FIG.
5 (E) and FIG. 14 (D), and FIG.
(B), since the disc is at the disc loading / unloading position shown in FIGS. 14 (D) and 15 (E), a command is issued thereafter, and the rotation of the motor 16 rotates the rotary tray 8 in the direction of the arrow CD to play. The disk 17 other than the medium can be replaced or taken out.

After the disk 17 is replaced or removed, a command is issued to place the tray base 1 and the rotary tray 8 inside the panel 3 (ie, the disk storage position). , The lifting gear 23, the control gear 24, and the driving gear A
25 also rotates in the a direction opposite to the above.

Then, after that, the tray base 1 moves from the state of FIG. 15E to the direction of arrow B via FIG. 15D in the same manner as above, and after FIG. ), The missing gear 24c of the control gear 24 and the drive gear B
26 is disengaged from the teeth 26a, and the drive gear A2
5 is not driven, but the control gear 24 rotates in the direction a as it is, and the control gear 2 is turned to the knob 27a of the switch 27.
The hole 24e of No. 4 is connected and the UP side of the switch 27 is OFF
, This time, it reverses and rotates in the b direction.
7 is turned on again, that is, the rotation of the motor 18 is stopped in the state of FIG.
Rotation also stops.

On the other hand, after the close lock gear 33 is disengaged from the toothless gear 24c of the control gear 24 and the tooth portion 26a of the drive gear B26, the close lock gear 33 is no longer driven by the urging force of the spring 34 as described above. It is further rotated in the K direction together with the gear A25 and the driving gear B26, and
15A is brought into contact with the pin 1p of the tray base 1, and FIG. 6C, FIG. 14C and FIG.
The disk storage position shown in FIG.

As described above, the close lock gear 33 is rotated in the direction of arrow K by the urging force of the spring 34, and the elongated hole 33h always comes into contact with the pin 1p of the tray base 1 in FIG.
Drive gear A meshed to stop at position (A)
25 and the stop position of the drive gear B26 are also limited.
As shown in FIG. 13, the drive gear A25 enters the toothed portion 25a of the control gear 24 and the drive gear B2
The entry of the toothless gear 24c of the control gear 24 into the sixth tooth 26a is performed without interference of the teeth.

Next, when a command to end the reproduction of the disk 17 and give it an initial state is issued, the motor 18 first rotates in the direction a in the same manner as described above, so that the lifting gear 23 and the control gear 24 also rotate in the direction a. The disk reproducing unit 30 rotates in the direction of arrow I. Then, the knob 2 of the switch 27 of the control gear 24
7a is connected to the upper surface inside 24d on the opposite side from the hole 24e.
As the DOWN side of the switch 27 is turned ON and the rotation of the motor 18 stops, the rotation of the elevating gear 23 and the control gear 24 also stops, and the state shown in FIG.
(C), the initial state shown in FIG. 14 (B) and FIG. 15 (A).

As described above, according to this embodiment, the sliding surfaces 1e and the claws 1d are provided on the left and right sides of the tray base 1, and the eaves 4c of the guide L4 and the eaves of the guide R6, which are fixed parts, are provided. The claw portion 1d of the tray base 1 is inserted into the tray base 6b. When the tray base 1 is in the disk mounting / dismounting position, the sliding surface 1e of the tray base 1, the eaves 4c of the guide L4, and the eaves 6b of the guide R6 are connected. In addition, the claw portion 1d of the tray base 1 is not visible from the outside, and the sliding surface 1e of the tray base 1, the eaves portion 4c of the guide L4, and the guide R6 are provided even when the tray base 1 is in the disk storage position. Since the eaves 6b are connected, the tray base 1 has a small number of parts.
In addition to being able to regulate the amount of movement upward and to prevent disengagement, and to move in the direction of arrows AB, mounting is easy and the number of mounting steps can be reduced.

The fulcrum b when the claw portion 1d of the tray base 1 is bent and rotated is adjusted by the eave portion 4c of the guide L4, the eave portion 6b of the guide R6, and the claw portion 1d of the tray base 1.
6A is provided outside (the opposite side to the direction of arrow F) of the point of force a at the time of contact, so that the tray base 1 can be temporarily mounted in the state where the tray base 1 shown in FIG.
Even if external force is applied to the tray base 1, the claw 1d of the tray base 1 does not rotate in the direction of the arrow F. Therefore, the claw 1d of the tray base 1, the eaves 4c of the guide L4, and the eaves of the guide R6. The regulation of the amount of movement of the portion 6b in the upward direction and the prevention of disengagement do not come off.

[0070]

As described above, according to the present invention, the sliding surfaces and the claws are arranged on the left and right sides of the tray base, and the claws of the tray base are inserted into the eaves of the left and right guides, which are fixed portions. When the tray base is in the disc loading / unloading position, the sliding surface of the tray base and the eaves of the guide are combined, and the claws of the tray base are not visible from the outside. Even at the position, the sliding surface of the tray base and the eaves of the guide are linked, so that the number of parts can be reduced and the amount of movement of the tray base in the upward direction can be controlled and it can be prevented from disengaging and moving in the front-rear direction. And installation is easy, and the number of installation steps can be reduced.

Further, the fulcrum at the time of bending and rotating at the time of insertion of the claw portion of the tray base is located outside the force point when the eaves portion of the guide comes into contact with the claw portion of the tray base (opposite to the above-mentioned rotation direction). Side), the claw portion of the tray base does not rotate in the rotation direction even if an external force is applied to the tray base in the state where the tray base is installed. Therefore, the amount of upward movement of the claw portion of the tray base and the eaves portion of the guide and the prevention of disengagement do not come off.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire disc player according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a movable portion of a disk player using a tray-base mounting mechanism according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view of a chassis portion of the disc player in one embodiment of the present invention.

4 is a cross-sectional view of the tray base mounting mechanism according to the embodiment of the present invention, taken along the line AA in FIG. 2;

5 is a cross-sectional view of the tray base mounting mechanism according to the embodiment of the present invention taken along line BB of FIG. 2;

FIG. 6 is a diagram illustrating the operation of the tray base of the tray base mounting mechanism according to the embodiment of the present invention.

FIG. 7 is a sectional view taken along the line CC of FIG. 2;

FIG. 8 is a sectional view taken along line DD of FIG. 2;

FIG. 9 is an exploded perspective view of a mechanism block of the disc player in one embodiment of the present invention.

FIG. 10 is a detailed view of a close lock gear of the disc player in one embodiment of the present invention.

FIG. 11 is a detailed view of an open lock gear of the disc player in one embodiment of the present invention.

FIG. 12 is a diagram illustrating the operation of a mechanism block of a disc player according to an embodiment of the present invention.

FIG. 13 is a detailed view of FIG.

FIG. 14 is a timing chart of a mechanism block of a disc player according to an embodiment of the present invention.

FIG. 15 is an explanatory view of the operation of the close lock gear and the open lock gear of the mounting mechanism of the disc player in one embodiment of the present invention.

FIG. 16 is an exploded perspective view showing the entirety of a disc player using a conventional tray-based mounting mechanism.

FIG. 17 is a sectional view taken along line AA of FIG. 16;

18 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 Reference Signs List 1 tray base 2 chassis 3 panel 4 guide L 5 mechanical base 6 guide R 7 outer case 8 rotary tray 9 roller 10 worm 11 worm shaft 12 worm base 13 worm pulley 14 belt 15 motor pulley 16 motor 17 disk 18 motor 19 motor pulley 20 belt 21 pulley gear DESCRIPTION OF SYMBOLS 22 Reduction gear 23 Elevating gear 24 Control gear 25 Drive gear A 26 Drive gear B 27 Switch 28 Switch 29 P base 30 Disc reproducing part 31 Clamper 32 Clamp plate 33 Close lock gear 34 Spring 35 Open lock gear

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-44662 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 17/22-17/30

Claims (2)

(57) [Claims] 1. A left and right slide of a tray base which is movable in the front-rear direction between a disk mounting / dismounting position where a disk can be mounted and the disk protrudes from the housing and a disk storage position where the disk is stored in the housing. A moving surface and pawls arranged in line with the moving surface are provided so that the pawls of the tray base are inserted into the eaves of the left and right guides, which are fixed portions. The eaves of the tray base are connected to each other, and the claws of the tray base are not visible from the external appearance, and the sliding surface of the tray base and the eaves of the guide are connected even when the tray base is in the disk storage position. A tray-based mounting mechanism characterized in that: 2. A fulcrum at the time of bending and rotating at the time of insertion of the claw portion of the tray base is located outside (a force point at which the eaves portion of the guide and the claw portion of the tray base come into contact with each other). The tray base mounting mechanism according to claim 1, wherein the tray base mounting mechanism is provided on the opposite side of the rotation direction.