JP2000100048A - Disk loading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the mechanism and to reduce the number of parts being used by simplifying the constitution, which is used to press a disk to a loading roller, as much as possible. SOLUTION: A lower disk guide 38 is arranged below an upper disk guide 37 and a loading roller 33 with a gap to form a disk passage 39. The guide 38 is mounted on a stage 30a in a freely rotative manner in the up and down directions by a pair of supporting shafts 38a and is pressed against the side, that is pressed to the roller 33, by a pair of springs 38b. Stoppers 38c, which are projected to the upper direction, are provided to the guide 38 to control the operating range of the pressed side of the guide 38. A recessed section 38d is provided on the surface of the guide 38 to store the roller 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk loading apparatus for transporting a disk using a loading roller in a disk reproducing apparatus.

[0002]

2. Description of the Related Art In a disk reproducing apparatus, a disk loading apparatus using a loading roller is provided for automatically transporting a disk between a disk insertion slot provided in the front of the apparatus and the inside of the apparatus. I have. When a disc is inserted from the disc insertion slot, the disc loading apparatus automatically conveys the disc to a disc playback position or a disc storage position inside the apparatus by rotation of a loading roller. When the disc is ejected from the inside of the apparatus, the disc at the internal position is automatically conveyed to a predetermined disc ejection position (a position where the disc can be ejected by ejecting from the disc insertion slot) by rotating a loading roller. is there.

As such a disk loading apparatus, there are an apparatus of a type in which a pair of loading rollers are vertically combined, and an apparatus of a type in which a single loading roller contacts the upper surface of a disk only. In addition, a disc guide is provided between the loading roller and the disc insertion slot to guide the disc inserted from the disc insertion slot in the left-right direction and the up-down direction to smoothly guide the disc to the loading roller.

In such a disk loading device, the loading roller is formed such that the central portion thereof has a minimum diameter portion, and the diameter increases from this portion toward both end portions in an inclined manner. In an apparatus using only a single loading roller, the lower disk guide extends to a position facing the loading roller. The upper surface of the lower disk guide facing the disk has a lowest portion at the center, and is formed so as to be inclined upward from this portion toward both end portions, thereby forming a lower surface with the disk facing surface of the loading roller. It draws a symmetrical outline.

Therefore, even when a pair of loading rollers are vertically opposed, or when a lower disc guide is opposed to the loading rollers, the distance between the upper and lower members is reduced from the center toward both ends. A space is formed. Further, in order to press the disk against the loading roller, a spring is used to urge the loading roller toward the other loading roller or the lower disk guide, or a dedicated disk pressing means such as a disk pressing member provided on the disk path. In this case, the disk is pressed and pressed against the loading roller.

In the disk loading apparatus having the above-described configuration, when the disk inserted from the disk insertion slot is a large-diameter disk having a diameter corresponding to the size of the disk passage, the large-diameter disk is used as a disk guide. As a result, the roller is guided to the loading roller through a predetermined disk passage centered on an axis orthogonal to the center of the loading roller. In this case, the large-diameter disk is smoothly inserted from the central portion into a space narrowed from the central portion of the loading roller toward both ends, and is smoothly pressed against the loading roller.

If the disk inserted from the disk insertion slot is a small-diameter disk having a diameter smaller than the diameter of the disk passage, the small-diameter disk is moved to the center position of the disk passage by the disk guide. Although it cannot be held, the small-diameter disc is guided and held at the center position of the disc passage by the shape of the above-described loading roller or additionally by the shape of the lower disc guide. That is,
This small-diameter disc is pressed toward the center from both ends of the loading roller, guided to the center position with respect to the loading roller, smoothly inserted into the space from the center, and smoothly pressed against the loading roller. Is done.

[0008] Regardless of the disk having any diameter, by rotating the loading roller while the disk is pressed against the loading roller as described above, the disk can be conveyed according to the amount of rotation. During this conveyance, the large-diameter disk is guided from the left and right by the disk guide, and the small-diameter disk is held at the center position by the shape of the loading roller and the lower disk guide. Therefore, regardless of the diameter of the disk, the disk can be favorably linearly moved along the predetermined disk path.

[0009]

However, in the conventional disk loading apparatus as described above, in order to press the disk against the loading roller, a spring is used to urge the loading roller, or a disk pressing member or the like is used. Since the disk is pressed by the dedicated disk pressing means, there is a problem that the configuration becomes complicated and the number of parts increases.

That is, when the loading roller is urged by using a spring, a portion for supporting the shaft of the loading roller is configured to be movable as an independent support member such as a roller bracket, and this support member is attached by a spring. In addition to this, a member for regulating the positions of the loading roller and the support member is required. The driving of the loading roller is performed by transmitting the driving force of the motor via a gear mechanism or the like. In order to absorb or follow the displacement, it is necessary to increase the diameter of the gears or increase the number of gears, and the configuration of the gear mechanism tends to be complicated. Further, when a dedicated disk pressing means such as a disk pressing member is provided on the disk path, the number of components on the disk path increases, and the configuration tends to be complicated.

The present invention has been proposed to solve the above-mentioned problems of the prior art.
An object of the present invention is to provide a disk loading device that can contribute to simplification of a mechanism and reduction of the number of parts by simplifying a structure for pressing a disk to a loading roller as much as possible.

[0012]

In order to solve the above-mentioned problems, the present invention holds a loading roller in a fixed position and presses a disk against the loading roller by urging a lower disk guide with a spring. The configuration for this is simplified. That is, the disc loading device according to the first aspect basically includes:
The apparatus includes a loading roller for transporting a disk, and a lower disk guide disposed below and facing the loading roller to guide the disk. In such a disc loading device, the loading roller is fixedly supported so as to always rotate at a fixed position, and the lower disc guide is provided rotatably up and down, and is pressed against the loading roller by a spring. It is characterized by being biased to the side that does.

In this configuration, when the disc is inserted between the lower disc guide and the loading roller, the lower disc guide presses the disc against the loading roller by pushing up the disc by the urging force of the spring. When a disc is inserted, the lower disc guide guides the disc in the left-right direction and the lower side, and guides the disc to a position inserted between the disc and a loading roller through a predetermined disc passage. Therefore, the disk can be satisfactorily guided to the loading roller by the lower disk guide, and the disk can be satisfactorily pressed against the loading roller.

In particular, according to this configuration, the mechanism can be simplified and the number of parts can be reduced. That is, an independent supporting member such as a roller bracket is not required as compared with a case where the loading roller is biased by a spring. Further, as compared with the case where the disk is pressed by a dedicated disk pressing means such as a disk pressing member, the lower disk guide also serves as the disk pressing means, so that the dedicated disk pressing means becomes unnecessary.

According to a second aspect of the present invention, in the disk loading device according to the first aspect, a part of a lower disk guide for restricting an operation range of a side of the lower disk guide that is pressed against a loading roller is provided. It is characterized in that a stopper is provided. In this configuration, the operating range of the lower disk guide can be easily regulated by bringing the stopper provided on the lower disk guide into contact with the peripheral member. In particular, according to this configuration, the mechanism can be further simplified and the number of parts can be reduced, since it is not necessary to provide an independent stopper member for regulating the operation range.

According to a third aspect of the present invention, in the disk loading device according to the first or second aspect, a concave portion for accommodating the loading roller is provided at a position facing the loading roller in the lower disk guide. And In this configuration, when the lower disc guide is pushed down by the pushing force when the disc is inserted, the inserted disc is smoothly guided to the position where the disc is pressed against the loading roller by the concave portion of the lower disc guide. be able to.

According to a fourth aspect of the present invention, in the disk loading device according to the third aspect, when the lower disk guide reaches a position closest to the loading roller by a biasing force of a spring when the disk is not inserted. , Characterized in that the loading roller is configured to be able to idle in the recess. According to this configuration, when the disc is not inserted, even when the lower disc guide is at the position closest to the loading roller by the urging force of the spring, the loading roller can idle in the recess, so that the No excessive load is applied due to the urging of the lower disk guide.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a vehicle-mounted disk reproducing apparatus to which the present invention is applied will be specifically described below with reference to the drawings.

[A. Overall Configuration] FIG. 1 is an exploded perspective view schematically showing the entire disc reproducing apparatus. As shown in FIG. 1, the disc reproducing apparatus includes a lower chassis unit 10, an upper chassis unit 20, a stage unit 30, a drive base unit 40, a shutter unit 50, and a damper unit 60.

Here, the lower chassis unit 10 and the upper chassis unit 20 are fixed to each other to form a mechanism chassis. The upper chassis unit 20 has six disk holders 21 (# 1 to ##).
6) is provided so as to be able to move up and down in a stacked state. Further, the stage unit 30 is supported by the lower chassis unit 10 so as to be able to move up and down, and a drive base unit 40 is supported on the lower surface of the stage unit 30 so as to be horizontally movable.

On the other hand, the shutter unit 50 and the damper unit 60 are fixedly mounted on the vehicle side, respectively. The mechanism is designed to be mounted in a floating state.

[B. Outline of Configuration of Each Unit] The outline of the configuration of each unit will be briefly described below with reference to FIG.

[1. Lower Chassis Unit] The lower chassis unit 10 is first provided with a first motor 1, a gear mechanism 2 indicated by a two-dot chain line in the figure, and a rotatable mode plate 3. That is, the mode plate 3 is rotated by the driving force from the first motor 1 via the gear mechanism 2 to switch the stage unit 30 and the disk holder 21 up and down, to open and close the shutter 52 of the disk insertion port 51, Inserting / ejecting a disc into / from the holder 21, switching drive force transmission of the drive base unit 40, fixing / releasing the anti-vibration mechanism, disc holder 21
, And separation position selection. Here, the mode plate 3 is formed with a plurality of cams and pressing portions for controlling various members.

On the other hand, as a drive source for driving the stage unit 30 and the disk holder 21 up and down and a drive source connecting means, a second motor 11 and an up / down gear mechanism 12 indicated by a two-dot chain line in the figure are provided. That is, the driving force from the second motor 11 is transmitted to one of the pair of slide plates 13 and 14 for raising and lowering the stage unit and the disk holder raising and lowering mechanism 22 of the upper chassis unit 20 via the raising and lowering gear mechanism 12. It has become so.
The driving force transmission destination of the lifting gear mechanism 12 is controlled by the rotation position of the mode plate 3.

A pair of slide plates 13 and 14 for elevating and lowering the stage unit are provided on both sides of the lower chassis unit 10, respectively. The slide plates 13 and 14 are engaged with the stage unit 30 by step cams 13 a and 14 a provided respectively, and are integrally connected via a link 15. As a result, the stage unit 30 is integrally slid and moved in the horizontal direction indicated by the arrow in the figure, and the stage unit 30 is moved up and down.

The lower chassis unit 10 further includes
A pair of slidable lower select plates 4 and 5 for selecting a separation position of the disc holder 21, a rotatable door open link 6 for opening and closing a shutter 52 of a disc insertion opening 51, and a rotatable eject for disc ejection. An arm (eject member) 7 and the like are provided, and all of these members are controlled in accordance with the rotation position of the mode plate 3 to switch the operation position.

[2. Upper Chassis Unit] The upper chassis unit 20 is a disk holder elevating mechanism 2
2, the disk holder 21 (# 1 to # 6) is raised and lowered. Here, the disc holder elevating mechanism 22 is connected to the second
When connected to the motor 11, the disk holder 21 is moved up and down by rotating the disk holder screws 23 provided at three locations in synchronization with a plurality of gears by the driving force from the second motor 11. It is configured as follows. In this case, the three disk holder screws 23 are engaged only with the uppermost disk holder # 6, and for the other disk holders # 1 to # 5, the uppermost disk holder # 2 is selected by selecting the separation position of the disk holder 21. Is selectively connected to the disk holder # 6, and is integrally moved up and down.

To select the separation position of the disk holder 21, a pair of upper select plates 24 and 25 (not shown) are slidably provided on the uppermost disk holder # 6. I have. These upper select plates 24 and 25 respectively
It is slidably engaged with the pair of lower select plates 4 and 5 described above in the vertical direction, slides integrally in the horizontal direction, and moves to the selected position of each of the disk holders # 1 to # 6. , Lower select plate 4,
5, the separation position of the disk holder 21 is selected. Disk holders # other than the top row
These select plates 4 are provided on the side surfaces # 1 to # 5.
Protrusions 21a that engage with 5, 24, 25 are provided.

[3. Stage Unit] The stage unit 30 includes a third drive source for driving the disk and the drive base unit horizontally and a third drive source connecting means.
Motor 31 and gear mechanism 3 for horizontal drive indicated by a two-dot chain line in the figure
2, a loading roller 33 constituting a disk insertion / ejection means, and a drive screw 34 constituting a drive conveyance means. That is, the driving force from the third motor 31 is applied to the horizontal drive gear mechanism 32.
, Is always transmitted to the loading roller 33 and is selectively transmitted to the drive screw 34.

In this case, whether or not the driving force is transmitted from the horizontal drive gear mechanism 32 to the drive screw 34 can be switched by the operation of an idler control plate 35, and the operating position of the idler control plate 35 is , And is controlled in accordance with the rotation position of the mode plate 3.

The loading roller 33, when the disc is inserted, pulls the disc into the disc holder 21.
Before reaching a predetermined holding position within the disc. In the vicinity of the loading roller 33, a rotatable stock arm (stock member) 36 for pushing a disc away from the loading roller 33 to a predetermined holding position in the disc holder 21 is provided. The operation position of the stock arm 36 is also switched by the operation of the idler control plate 35. In the drawing, reference numerals 37 and 38 denote an upper disk guide and a lower disk guide which form a disk passage.

[4. Drive Base Unit] The drive base unit 40 is screw-engaged with the drive screw 34, and moves in the axial direction according to the rotation of the drive screw 34. In the drive base unit 40, first, the driving force from the fourth motor 41 is applied to a gear mechanism 42 indicated by a two-dot chain line in FIG.
The pickup unit 44 is transmitted to the lead screw 43 via the lead screw 43, and the pickup unit 44 is moved in the axial direction through the rotation of the lead screw 43. In addition, the turntable unit 45
It is directly driven by a spindle motor 46 arranged below and below.

[5. Shutter Unit] The front panel 50a of the shutter unit 50 has a disc insertion slot 5
1 and a shutter 52 for opening and closing the shutter 1 are provided. The shutter 52 is integrally attached to the door plate 53, and opens and closes the disc insertion opening 51 in accordance with the operation of the door plate 53. Here, the door plate 53 is controlled by the above-mentioned mode plate 3 via the door open link 6. It switches to one.

[6. Damper unit] Damper unit 6
0 has a pair of left and right damper plates 61, 62 attached to the vehicle side.
2 includes a pair of dampers 63 and a damper spring 64
Are provided respectively. That is, the mechanism composed of the chassis units 10 and 20, the stage unit 30, and the drive base unit 40 applies four dampers 63 and four damper springs 64 to the vehicle in order to attenuate external vibration during disc reproduction. It is configured to be supported in a floating state through the intermediary.

[C. Details of Configuration and Function of Each Unit] Further, the configuration and function of each unit will be described in more detail below with reference to FIGS.

[1. Lower Chassis Unit] (1) Mode Switching FIG. 2 is a plan view showing an initial state of the lower chassis unit 10. 2, only the outline of the chassis 10a is shown by a two-dot chain line from the viewpoint of simplification of the drawing. FIGS. 3 to 8 are plan views respectively showing control states of a plurality of members by the mode plate 3.

First, as shown in FIG.
At the upper center, a mode plate 3 for controlling a plurality of members is rotatably disposed, and is driven via a gear mechanism 2 by a driving force of a first motor 1 disposed at one end of a chassis 10a. Is to be done.

The mode plate 3 has an initial position P0 shown in FIG. 2 around the axis 3a and a disk insertion / ejection position Pa which is a clockwise operation position in FIG. 2 (FIGS. 3 to 5). And a disc holder selection position Pb (FIGS. 6 to 8) which is an operation position in the counterclockwise direction in the drawing, and the groove cams 3b to 3e and the pressing portions 3f, 3g
Thus, a plurality of members are respectively controlled. That is, the mode plate 3 includes the cams 3b to 3b.
e controls the lifting power link 8 and the stage power link 9 in addition to the pair of lower select plates 4 and 5 described above.
The door open link 6 and the eject arm 7 are respectively controlled by f and 3g. The configuration and function of these members controlled by the mode plate 3 are as follows.

The pair of lower select plates 4 and 5
They are slidably provided by guide grooves 4a and 5a, respectively. These lower select plates 4,
5 includes corresponding groove cams 3b, 3b of the mode plate 3.
c are provided with pins 4b and 5b, respectively, and are provided with claws 4c and 5c, respectively, which engage with the projections 21a of the disc holder 21. With this configuration, the pair of lower select plates 4, 5 is configured such that each disk holder #
By sliding to the selected positions 1 to # 6, the separation position of the disk holder 21 is selected. That is, the pair of lower select plates 4 and 5
By c and 5c, the disk holder below the separation position is held at the lower position.

The lifting power link 8 is provided so as to be rotatable about a shaft 8a. This lifting power link 8
Is provided with a pin 8b to be inserted into the corresponding groove cam 3d of the mode plate 3, and the lifting gear mechanism 12
A link spring 8c is provided which engages with the link spring 8c. With this configuration, the lifting power link 8 rotates between the stage lifting position and the disk holder lifting position according to the rotation position of the mode plate 3, and the lifting gear mechanism 12 according to the operating position. Is switched to one of the slide plates 13 and 14 and the disk holder elevating mechanism 22.

The stage power link 9 is provided rotatably about a shaft 9a. The stage power link 9 is provided with a pin 9b to be inserted into the corresponding groove cam 3e of the mode plate 3, and is provided with a pressing portion 9c which engages with the idler control plate 35 shown in FIG. With this configuration, the stage power link 9 moves the first operating position (FIGS. 2, 6 to 8), the second operating position (FIGS. 3 and 4) according to the rotation position of the mode plate 3, And a third operating position (FIG. 5), and the idler control plate 35 of the stage unit 30 is rotated according to the operating position.
Is switched between the corresponding three operation positions. The stage power link 9 and the idler control plate 35 connect the drive screw 34 to the third motor 31 in the first operation position,
In the second operating position, the drive screw 34 is disconnected from the third motor 31, and in the third operating position, the disk is pushed by the stock arm 36.

The door open link 6 is provided rotatably about a shaft 6a. This door open link 6
Is provided with a pin 6b for engaging with a corresponding pressing portion 3f of the mode plate 3, and a pressing portion 6c for operating the door plate 53 shown in FIG. Further, the door open link 6 is urged toward the shutter closing side by a spring 6d. With this configuration, the door open link 6 rotates between the shutter closing position and the shutter opening position in accordance with the rotation position of the mode plate 3, and opens and closes the shutter 52 shown in FIG. I have. Further, the door open link 6 is configured to mechanically turn on / off one of the contacts constituting a control circuit of the mechanism in accordance with the operation position.

The eject arm 7 is provided rotatably about a shaft 7a. The eject arm 7 is provided with an engaging portion 7b that engages with the corresponding pressing portion 3g of the mode plate 3, and a spring 7c that urges the eject arm 7 toward the disk releasing side. With this configuration, the eject arm 7 pivots between the disc release position and the disc eject position in accordance with the pivot position of the mode plate 3, and is stored in the disc holder by the operation up to the disc eject position. The disc is pushed out to a position where it is pressed against the loading roller 33.

A position detecting plate 71 for optically detecting the operating position of the mode plate 3 is provided around the mode plate 3 for a mechanism control circuit.
A switch plate 72 for mechanically turning on and off one of the contacts constituting the control circuit according to the operating position of the mode plate 3 is provided.

Here, the position detecting plate 71 is connected to the mode plate 3 by meshing of gears, and rotates around a shaft 71a as the mode plate 3 rotates. The position detection plate 71 includes:
A plurality of slits 71b corresponding to each operation position of the mode plate 3 are provided, and the position of the mode plate 3 can be optically detected using the slits 71b. Also, the switch plate 72 is
a pin 72b that is provided rotatably about a and engages with a cam 3h provided on the periphery of the mode plate 3.
And a spring 72c for urging the switch plate 72 in the direction of engagement with the cam 3h, so that the operating position is switched between when the mode plate 3 is at the initial position and when it is not. .

The operation position of the mode plate 3 will be described in more detail. The mode plate 3 is used as a disc insertion / ejection position Pa, which is the shutter opening position Pa1 which is the end position in the clockwise direction in FIG. Different control is performed at the roller attaching / detaching position Pa2 on the position P0 side and the disc pushing position Pa3, and as the disc holder selecting position Pb, six disc holders are selected from the initial position P0 toward the clockwise end position in the drawing. Positions Pb1 to Pb
At b6, control for selecting one of the disk holders # 1 to # 6 is performed.

Table 1 below shows such a mode plate 3
Operating position and a plurality of members 4 to 9 controlled thereby
3 shows the relationship with the operation position. 3 to 8
Are different operating positions of the mode plate 3 as a shutter opening position Pa1 (FIG. 3), a roller attaching / detaching position Pa2 (FIG. 4), a disc pushing position Pa3 (FIG. 5), and a first disc holder selecting position Pb1 (FIG. 6). , Second disk holder selection position Pb2 (FIG. 7), sixth disk holder selection position P
The control state at each operation position of b6 (FIG. 8) is shown.

[0048]

[Table 1]

(2) Elevating Gear Mechanism FIGS. 9 and 10 show that the elevating power link 8 has the stage unit elevating position (FIG. 2) and the disk holder elevating position (FIG. 3).
FIGS. 8A and 8B are diagrams respectively showing the connected state of the elevating gear mechanism 12 in the cases shown in FIGS. 8A and 8B. In these figures, FIG. It is a side view which shows the state of the corresponding gear mechanism 12 for raising / lowering. Note that, in these figures (B), in order to clearly show the configuration of the elevating gear mechanism 12, a part of the side plate of the chassis 10a and the second motor 11 described in (A) are omitted. ing.

First, as shown in FIGS. 9 and 10B, the elevating gear mechanism 12 includes a gear train 12a on the motor side,
It includes an idler gear 12b, a gear train 12c on the stage unit elevating side, a gear train 12d on the disk holder elevating side, and an idler link 16 and an idler arm 17 for switching the position of the idler gear 12b.

Here, the idler link 16 is connected to the shaft 16a.
And is engaged with the link spring 8c at an engagement portion 16b provided at one end thereof, and is engaged with the idler arm 17 at a groove cam 16c provided at the other end thereof. I have. Also, the idler arm 17
Is provided so as to be rotatable about a shaft 17a, and an idler gear 12b is supported on a free end thereof.
A pin 17b is provided on an extension of the center axis of the idler gear 12b, and the pin 17b is inserted into the groove cam 16c.

With this configuration, the idler link 16 and the idler arm 17 are rotated in accordance with the rotational position of the lifting power link 8, and the position of the idler gear 12b is switched, so that the gear train on the motor side from the second motor 11 is rotated. 12a
The transmission destination of the driving force transmitted to the stage unit is switched to either the gear train 12c on the stage unit elevating side (FIG. 9) or the gear train 12d on the disk holder elevating side (FIG. 10).

(3) Elevation of Stage Unit FIGS. 11 and 12 show a pair of slide plates 13 and 14.
FIG. 3 is a diagram showing a configuration for raising and lowering a stage unit 30 according to the first embodiment. Here, FIGS. 11A and 11B are a plan view and a front view of the mechanism, respectively. In addition, FIG.
11B and 11B are side views showing the operation of the slide plates 13 and 14, and correspond to the X arrow view and the Y arrow view of FIG. 11A, respectively.

First, as shown in FIG. 11A, a pair of pins 30b is provided on both sides of the stage 30a of the stage unit 30.
Is a pair of slide plates 1 as shown in FIG.
The pair of stair cams 13a and 14a are respectively inserted into the pair of step cams 3 and 14a. With this configuration, as shown in FIGS. 11A and 12, the stage unit 30 moves the stair cam 13 with the horizontal movement of the slide plates 13 and 14.
It moves to the height determined by each step of a and 14a.

That is, when the slide plates 13 and 14 are at the initial position as shown by the solid lines in the figure, the stage unit 30 is also positioned at the lowermost position, as also shown by the solid lines in the figure. ing. Then, as shown by the two-dot chain line in the figure, when the slide plates 13 and 14 reach the extreme end positions on the opposite side to the initial position, similarly, as shown in FIG.
As shown by the dashed line, the stage unit 30 reaches the uppermost position.

(4) Fixing / Release of Vibration Isolation Mechanism As shown in FIG.
The lock links 18 and 1 for fixing / releasing the anti-vibration mechanism are provided.
9 are engaged with each other, and the slide plates 13 and 1
The anti-vibration mechanism is released by the operation from the initial position of No. 4. That is, a pair of slide plates 1
The groove cams 13b and 14b are respectively provided on the third and third engagement portions 13 and the engagement portions 13 that engage with the damper unit 60.
c and 14b are provided respectively. On the other hand, the lock links 18 and 19 are provided rotatably about the shafts 18a and 19a, and provided with pins 18b and 19b inserted into the groove cams 13b and 14b of the slide plates 13 and 14, respectively. Engaging portions 18c and 19c that engage with the damper unit 60 are provided, respectively.

With this configuration, the slide plate 13,
A slight stroke between the initial position (FIG. 36) and the release position (FIG. 37) as shown in FIG. 2 causes the lock links 18 and 19 to move the lock links 18 and 19 between the fixed position (FIG. 36) and the release position (FIG. 37). ). Then, as shown in FIG. 2, when the slide plates 13 and 14 are at the initial position and the lock links 18 and 19 are at the fixed position (FIG. 36), the slide plates 13 and 14 are provided.
The engaging portions 13c and 14c of the lock links 18 and 19 engage with the damper unit 60 to fix the mechanism to the damper unit 60. On the other hand, when the slide plates 13, 14 and the lock links 18, 19 reach the release position (FIG. 37), the slide plates 13, 14
When the engaging portions 13c and 14c of the lock members 18c and 19c of the lock links 18 and 19 are separated from the damper unit 60, the vibration damping mechanism of the mechanism by the damper unit 60 acts.

[2. Upper Chassis Unit] (1) Disk Holding by Disk Holder FIG. 13 is a plan view showing a configuration of a disk holder 21 held in a stacked state on the upper chassis unit 20. As shown in FIG. 13, a pair of disk holding springs 21b for holding a disk are arranged on the inlet side (downward in the figure) of the disk holder 21, respectively. This pair of disc hold springs 21b
It has a substantially V shape, and as shown in FIG.
When the disc D is at a predetermined holding position in the disc holder 21, the disc D is pressed and held by the one open end of the V-shape toward the back of the disc holder 21 (upward in the figure).

As shown in FIG. 13, the disk holder 21 has a projection 21 on the uppermost disk holder # 6.
a, and other disk holders # 1 to # 5
Are basically the same shape except that the positions of the protrusions 21a are sequentially shifted (that is, they are arranged in a line).

(2) Disc Holder Elevating Mechanism FIG. 14 is a view showing the structure of the disc holder elevating mechanism 22. FIG. 14A is a plan view, and FIG.

First, as shown in FIG. 14A, a plurality of gears of a disk holder raising / lowering mechanism 22 are arranged in a plane on the upper surface of a chassis 20a of the upper chassis unit 20. The gear train of the disk holder elevating mechanism 22 includes a drive-side gear train 22a that meshes with the disk holder elevating-side gear train 12d of the elevating gear mechanism 12 indicated by a two-dot chain line, a central large-diameter gear 22b, and a large-diameter gear. 22b
And three small-diameter gears 22c each of which meshes with the driving gear train 22c.
a and the large-diameter gear 22b. Each of the three small-diameter gears 22c meshes with a pinion 23a provided at one end of each of the three disk holder screws 23.

Also, three disk holder screws 2
3 respectively penetrate the six-stage disk holders # 1 to # 6, and only the uppermost disk holder # 6 is screw-engaged. That is, as shown in FIG.
A female screw is provided in a penetrating portion of the disk holder screw 23 of the uppermost disk holder # 6, and is engaged with a male screw of the disk holder screw 23. It is supposed to. Then, the other disk holders # 1 to # 5
Has only a hole through which the disk holder screw 23 is slidably inserted.

With such a configuration, when the disk holder elevating mechanism 22 is connected to the second motor 11 via the elevating gear mechanism 12 described above, the disk holder elevating mechanism Are rotated in synchronization with each other, and the uppermost disk holder # 6 is raised and lowered. In this case, the other disk holders # 1 to # 5 are selected with respect to the uppermost disk holder # 6 by selecting the separation position of the disk holder 21 by the pair of upper select plates 24 and 25 as described above. Are connected to each other and move up and down integrally.

(3) Selection of Separation Position of Disk Holder FIGS. 15 to 18 are views showing a configuration for selecting a separation position of the disk holder 21. FIG. Here, FIGS. 15 and 16
Is a plan view showing the disk holder 21 and the lower and upper select plates 4, 5, 24, 25, respectively. FIGS. 17 and 18A and 18B are side views showing the operation of separating the disk holder by the select plates 4, 5, 24, and 25. FIGS. Each corresponds. In addition, since the lower select plates 4 and 5 are shown in detail in FIGS. 2 to 8, in FIGS. I have.

First, as shown in FIGS. 15 and 16, the upper select plates 24 and 25 of the upper chassis unit 20 are provided with the guide grooves 24a and 25, similarly to the lower select plates 4 and 5 of the lower chassis unit 10.
It is slidably provided by a. FIG.
As shown in FIGS. 7 and 18, one upper select plate 25 is provided with a pin 25 b inserted into a corresponding engagement groove 5 d of the corresponding lower select plate 5, and is provided with a protrusion 21 a of the disc holder 21. An engaging claw 25c is provided. Although not shown, the other upper select plate 24 is also provided with similar pins and claws.

The pair of lower select plates 4 and 5 and the pair of upper select plates 24 and 25 which are individually engaged in this manner slide integrally with each other according to the turning position of the mode plate 3, and move downward. N-th disk holder #n (# 1 in FIG. 15, ## in FIG. 16)
The selected position 6) is reached.

At the selected position of the disk holder #n, the lower select plates 4 and 5 move the disk holder # n-1 below the selected disk holder #n.
And the lower disk holder including the disk holder # n-1 is held at the lower position. Further, at the selected position of the disk holder #n, the upper select plates 24 and 25 are engaged with the projections 21a of the selected disk holder #n to move the upper disk holder including the disk holder #n to the uppermost disk. It is connected to the holder # 6 and is raised integrally.

For example, in the selected position of the lowermost disk holder # 1 as shown in FIG. 15, (A) of FIG.
As shown in (1), there is no disk holder with which the lower select plate 5 is engaged. In this case, the claw 25c of the upper select plate 25 is engaged with the projection 21a of the selected disk holder # 1, as shown in FIG. 17B, so that the upper select plate 25 The upper disk holders # 1 to # 5 including the holder # 1 are replaced with the uppermost disk holders #
6 and ascend integrally. Although not shown, the other upper select plate 24 also raises the disk holders # 1 to # 6 integrally.

On the other hand, for example, at the selected position of the uppermost disk holder # 6 as shown in FIG. 16, as shown in FIG.
Is located at a position overlapping the protrusion 21a of the disk holder # 5 below the selected disk holder # 6,
As shown in FIG. 18B, the lower select plate 5 holds the lower disk holders # 1 to # 5 including the disk holder # 5 at the lower position by engagement of the claws 5c and the protrusions 21a. . Although not shown, the other lower select plate 4 also has a disk holder # 1.
To # 5 in the lower position. In this case, there is no disk holder to be engaged with the upper select plate 25, and only the uppermost disk holder # 6 is raised.

(4) Shape of Disk Holder FIGS. 19A and 19B show the disk holder 2 of the present invention.
It is a top view which shows two examples as 1 specific shape. Here, (A) shows a disk holder 21 having the same shape as that shown in FIG. On the other hand, the disk holder 21 shown in (B) has the shape of the disk holder shown in (A) in which the portion on the disk insertion side is omitted. In addition to these, the disk holder 21 of the present invention can have various dimensions and shapes as long as it has a minimum necessary function for holding the disk D.

Further, it is not always necessary that all the disk holders have the same dimensions and shape, and disk holders having different shapes can be stacked. For example, if the disk holder shown in FIG. 19A is used for the uppermost disk holder # 6 and the disk holder shown in FIG. 19B is used for the other disk holders # 1 to # 5, Thus, it is possible to reduce the weight of the entire disk holder while giving sufficient strength to the uppermost disk holder # 6, which requires the highest strength. In this case, there is also obtained an advantage that the driving force required for lifting and lowering the disk holder can be reduced.

[3. Stage Unit] (1) Disk Detection FIGS. 20A and 20B are diagrams showing a configuration around the disk passage portion of the stage unit 30, wherein FIG. 20A is a plan view and FIG. 20B is a front view. As shown in FIG. 20A, in the disk passage portion of the stage unit 30, there are a total of four light transmitting detection elements 81, two at the entrance side and two at the back side with the loading roller 33 interposed therebetween. 84 are connected to the control circuit of the mechanism. As shown in FIG. 20B, these detecting elements 81 to 84 are constituted by a pair of upper and lower light transmitting units and light receiving units arranged so as to sandwich the upper and lower disk guides 37 and 38. Also,
In the figure, reference numeral 30a denotes a stage, and D0 indicated by a two-dot chain line in FIG.

Of these, the two detection elements 81,
Reference numeral 82 is provided for detecting the start of disk loading, and is disposed at a position slightly closer to the entrance distant from the loading roller 33 and at a slightly wider interval than the disk diameter of 8 cm so that the disk diameter can be identified. I have. On the other hand, the two detection elements 83 and 84 on the back side
It is arranged at a smaller interval, and detects completion of disk loading by the loading roller 33 and completion of disk ejection. Hereinafter, the detection operation by these detection elements 81 to 84 will be described with reference to FIGS.
This will be described with reference to FIG.

Here, FIG. 21 is an explanatory diagram for explaining a detecting operation at the time of disk loading, and FIG. 22 is an explanatory diagram for explaining a detecting operation at the time of disk ejection. FIG.
3 is an explanatory diagram for explaining an ejecting operation when an 8 cm disc is inserted from the center of the disc insertion slot, and FIG. 24 is an explanatory diagram for explaining an ejecting operation when an 8 cm disc is inserted from the end of the disc insertion slot.

First, in the initial state at the time of waiting for disk insertion, all of the four detection elements 81 to 84 are in the non-detection state.
Only when two 82s are switched to the detection state at the same time,
It detects "insertion of a 12 cm disk". In other words, the control circuit of the mechanism includes the detecting element 81
Based on these operating conditions of No. to 84, "12 cm disc is detected as the disc loading start detection position D1 (FIG. 2
It is determined that the disc is in the state of “inserted in 1)”, the rotation of the loading roller 33 is started, and disc loading is started.

During the subsequent loading of the disk, the two detection elements 8 on the back side are moved by the movement of the disk.
3, 84 are simultaneously switched to the detection state. Thereafter, as the disk passes, the two detection elements 81 and 82 on the entrance side are switched to the non-detection state again, and
Further, when the two detection elements 83 and 84 on the back side are switched to the non-detection state again, "disc loading by the loading roller" is detected. That is, the control circuit of the mechanism includes the detecting element 8
Based on these operating conditions of Nos. 1 to 84, the "12 cm disk loading completion detection position D2 (FIG. 2
1), and the rotation of the loading roller 33 is stopped.

The disc is separated from the loading roller 33 at the disc loading completion detection position D2, and is simultaneously pushed further inward by the stock arm 36 (FIGS. 1 and 20).
The disk reaches the disk holding position D0 indicated by the dashed line and is held here.

Then, as shown by the two-dot chain line in FIG. 22, when the disk is at the disk holding position D0,
All of the four detection elements 81 to 84 are in a non-detection state. When a disc eject command is received from this state, the control circuit of the mechanism pushes the disc from the disc holding position D0 by the eject arm 7 (FIGS. 1 to 8) and starts rotation of the loading roller 33 in the reverse direction. Disc ejection is started. In this case, when the disk is pushed out, the two detection elements 83 and 84 on the rear side are switched to the detection state, and with the movement of the disk, the two detection elements 81 and 82 on the entrance side are also switched to the detection state. It has become. Thereafter, when the two detection elements 83 and 84 on the back side are switched to the non-detection state again as the disk passes, "disc ejection complete" is detected. That is, the control circuit of the mechanism determines “12 cm” based on such operating conditions of the detection elements 81 to 84.
The disk is at the disk ejection completion detection position D3 (FIG. 2
2), the rotation of the loading roller 33 is stopped.

On the other hand, at the time of waiting for insertion of the disc, at least one of the two detection elements 83 and 84 on the rear side switches to the detection state while the two detection elements 81 and 82 on the entrance side maintain the non-detection state. Or when only one of the two detection elements 81 and 82 on the entrance side is switched to the detection state, and subsequently at least one of the two detection elements 83 and 84 on the back side is switched to the detection state, "12cm
"The insertion of foreign matter other than a disc" is detected.

That is, the control circuit of the mechanism determines “8c” based on such operating conditions of the detection elements 81 to 84.
Foreign matter such as an m-disc has two detection elements 81, 8 on the entrance side.
2 (position D4 in FIG. 23) and inserted to a position (position D5 in FIG. 23) that overlaps the detection elements 83 and 84 on the far side. A position passing through one of the detection elements 81 and 82 on one side on the entrance side and overlapping the detection elements 83 and 84 on the back side (FIG. 2).
4 is inserted into the positions D6 and D7).

As described above, in the stage unit 30, by using the four detection elements 81 to 84, only the 12 cm disc can be reliably identified and inserted.
By removing other foreign matter including the cm disk, malfunction is prevented.

(2) Horizontal drive gear mechanism FIGS. 25A to 25C show the stage power link 9.
Is in the first operating position (FIGS. 2, 6 to 8),
In the second operating position (FIGS. 3 and 4);
FIG. 2 is a side view showing a connected state of the horizontal drive gear mechanism 32 in the operation position (FIG. 5) of FIG.
This corresponds to a view on the arrow X of 0. In FIG. 25, in order to clearly show the configuration of the horizontal drive gear mechanism 25, only the outline of the stage 30a is shown by a two-dot chain line.

First, as shown in FIGS. 25A to 25C, a horizontal drive gear mechanism 32 is a motor-side gear train 32a that constantly connects the third motor 31 and the loading roller 33, Idler gear 32 that comes into contact with and separates from row 32a
b, the idler gear 32b and the drive screw 34
Gear train 32c on the drive screw side that constantly connects
And an idler plate 85 for switching the position of the idler gear 32b.

Here, the idler plate 85 is
The idler gear 32b is rotatably provided about a, and an idler gear 32b is supported at a free end thereof. A pin 85b is provided on an extension of the center axis of the idler gear 32b, and is engaged with the idler control plate 35.

The idler control plate 35
Is slidably provided by a guide groove 35a, and engages with a pressing portion 9c of the stage power link 9 at an engaging portion 35b provided at one end thereof, and an idler is provided at a groove cam 35c provided at the other end thereof. The pins 85b of the plate 85 are controlled. The idler control plate 35 is urged by a spring 35d in a direction to return to the initial position.

With this configuration, the stage power link 9
Idler control plate 3 according to the turning position of
5, the idler plate 81 is rotated to switch the position of the idler gear 32b. That is, when the stage power link 9 is in the first operating position (FIGS. 2, 6 to 8), the idler control plate 35 is also in the first operating position shown in FIG. The gear train 32c on the screw side is connected to the third motor 32. On the contrary,
When the stage power link 9 is in either the second operation position (FIGS. 3 and 4) or the third operation position (FIG. 5), the idler control plate 35 is also in the second position shown in FIG. 2 and the third operation position shown in (C), and in each case, the gear train 32c on the drive screw side is separated from the third motor 31.

(3) Disk Loading / Ejecting Mechanism FIG. 26 is a diagram showing a configuration of a disk loading / ejecting mechanism in the stage unit 30.
(A) is a plan view, and (B) and (C) are side views showing two states. In FIG. 26, in order to clearly show the configuration of the disk passage portion, the horizontal drive gear mechanism 3 is shown.
The second and third motors 31 and the like are omitted.

First, as shown in FIG. 26A, the upper disk guide 37 is fixed to the lower surface of the flat plate of the stage 30a.
The loading rollers 33 are arranged side by side on the back side of. As shown in FIGS. 26B and 26C, a lower disc guide 38 is arranged below the upper disc guide 37 and the loading roller 33 with a space therebetween to form a disc passage 39. In FIG. 26A, the entrance 39a of the disk passage 39 is shown, and the left and right end lines 39b, 39c are shown by dashed lines.

Then, as shown in FIG. 26A, a disk passage 39 in the lower disk guide 38 is provided.
A pair of support shafts 38a are provided at a position near the entrance 39a, and a pair of springs 38b are provided at a position on the back side. That is, FIG.
As shown in (B) and (C) of FIG.
Are mounted to be rotatable in the vertical direction with respect to the loading roller 3 by a pair of springs 38b.
3 is urged to the side to be pressed. Further, in the vicinity of each of the springs 38b in the lower disk guide 38,
In order to regulate the operating range of the lower disk guide 38 on the pressure side, stoppers 38c protruding upward are provided. Further, a recess 38 d for accommodating the loading roller 33 is provided on the surface of the lower disc guide 38.
The concave portion 38d allows the loading roller 33 to rotate even when the lower disk guide 38 is on the pressure side.

With this configuration, the loading roller 33 is rotated by the driving force of the third motor 31 through the horizontal drive gear mechanism 32, and the disk D is pressed against the loading roller 33 by the lower disk guide 38, and D is moved horizontally.
That is, when a disc is not inserted, FIG.
6 (B), the lower disc guide 38
Is loaded by a spring 38b.
Is biased to the uppermost position closest to. As shown in FIG. 26C, the lower disc guide 38
The disc D is pushed down by a pushing force when the disc D is inserted. In this case, the lower disc guide 3
The recess 38d of No. 8 surely guides the inserted disc D to a position where the disc D is pressed against the loading roller 33, so that the loading by the loading roller 33 is started smoothly.

(4) Storage of Disk in Disk Holder As shown in FIG. 20A, the idler control plate 35 is further provided with a pressing portion 35e for pressing the stock arm 36. The stock arm 36 is provided so as to be rotatable about a shaft 36a.
The stock arm 36 is provided with a pressing portion 36b for pushing the disk D, and a spring (not shown) for urging the stock arm 36 to the side where the disk D is released.

With this configuration, the stage power link 9
Idler control plate 3 according to the turning position of
5, the stock arm 36 is rotated, and the disc D
Is pushed into the disk holding position D0.
That is, when the stage power link 9 is in one of the first operation position (FIGS. 2, 6 to 8) and the second operation position (FIGS. 3, 4), the idler control plate 35 is also not shown. 25 (A) and the second operating position shown in FIG. 25 (B). In each case, the stock arm 36 is moved to the position shown in FIG. 20 (A). The disk D is held at the initial position as shown in FIG. On the other hand, when the stage power link 9 moves from the first or second operation position to the third operation position (FIG. 5), the idler control plate 35 also moves to the third position shown in FIG. 20A, the stock arm 36 is rotated, and the stock arm 36 is moved to the pushing position side as shown by a two-dot chain line in FIG.
It is designed to be pushed into.

(5) Horizontal Movement of Drive Base Unit FIG. 27 is a diagram showing a configuration for horizontal movement of the drive base unit 40 in the stage unit 30.
(A) is a plan view and (B) is a side view.

First, as shown in FIG. 27A, a drive screw 34 is arranged along one side plate near one of the two side plates sandwiching the disk passage portion of the stage 30a. . A position plate 86 is attached to a side plate opposite to the stage 30a. The drive screw 34 and the position plate 86 support both ends of the drive base 40a of the drive base unit 40, respectively.

That is, a screw holder 47 is provided at one end of the drive base 40a and is engaged with the drive screw 34. With the rotation of the drive screw 34, the drive base unit 40 moves along the drive screw 34. It is designed to move. A position spring 48 is provided on the upper surface of the other end of the drive base 40a.
The drive base unit 40 is elastically supported on the lower surface of the drive base unit 6. The distal end of the position spring 48 protrudes upward, and this portion engages with slits 86 a provided at three places of the position plate 86, and the screw holder 4 of the drive base unit 40 is
The portions opposite to 7 are positioned at predetermined positions.

With this configuration, the drive screw 34
, The drive base unit 40 is slid along its axial direction and moved to one of an initial position indicated by a solid line on the entrance side, a play position at the center, and a chucking position indicated by a two-dot chain line on the back side. It is made to let. In this case, the portion of the drive base unit 40 on the screw holder 47 side is positioned at any one of the initial position, the play position, and the chucking position according to the rotation amount of the drive screw 34. Also,
A portion opposite to the screw holder 47 is provided with a position spring 48 and a slit 86 of a position plate 86.
By the engagement with a, it is positioned at a position corresponding to the position on the screw holder 47 side.

[4. Drive Base Unit] (1) Feeding Mechanism of Pickup Unit FIG. 28 is a diagram showing a configuration of a feeding mechanism of the pickup unit 44 in the drive base unit 40.
(A) is a plan view, (B) is a front view, (C) is X in (A).
It is an arrow view. In FIG. 28, from the viewpoint of simplifying the drawing and clearly showing the feed mechanism, components not directly related to the feed mechanism are omitted.

First, as shown in FIG. 28A, a lead screw 43 is arranged on the entrance side of the drive base 40a along the longitudinal direction thereof. One end of the pickup unit 44 is supported by the lead screw 43, and the other end is supported by the drive base 40a.

That is, a screw holder 91 is provided at one end of the pickup unit 44 as shown in FIG. 28A, and the lead screw is driven by the urging force of a screw holder spring 92 shown in FIG. 43. With this configuration, the pickup unit 44 moves along with the rotation of the lead screw 43. As shown in FIG. 28C, a leaf spring 93 is provided on the lower surface of the other end of the pickup unit 44, and elastically supports the pickup unit 44 with respect to the drive base 40a.

FIGS. 29A and 29B are views showing in detail the main part of the feed mechanism of FIG. 28, wherein FIG. 29A is an enlarged plan view, FIG. 29B is an enlarged front view, and FIG. FIG. As shown in FIG. 29C, the screw holder 91 has a substantially L-shaped cross section composed of a vertical plate and a horizontal plate.
It is slidably inserted vertically. That is,
As shown in FIGS. 29A and 29C, the screw holder 91 has a guide projection 91a extending in the vertical direction on the back surface of the vertical plate, and the guide projection 91a is provided on the pickup unit 44 side. Guide groove 44a
, And can slide up and down with respect to the pickup unit 44.

The upper surface of the horizontal plate of the screw holder 91 is a surface facing the lower surface of the lead screw 43. Is provided. Further, on the lower surface of the horizontal plate of the screw holder 91, a single hemispherical projection 91c is provided substantially at the center of the arrangement area of the plurality of engagement projections 91b. This hemispherical projection 91
c is a screw holder spring 9 provided on the pickup unit 44 side, as shown in FIG.
2 pushed upwards.

Due to the positional relationship between the plurality of engaging protrusions 91b and the single hemispherical protrusion 91c, and the pressing of the hemispherical protrusion 91c by the screw holder spring 92, the plurality of engaging protrusions 91b of the screw holder 91 are changed. ,
The lead screw 43 is evenly pressed against the screw portion. As a result, the horizontal movement of the pickup unit 44 with respect to the lead screw 43 is possible without play.

(2) Turntable Unit FIGS. 30A and 30B are diagrams showing the configuration around the turntable unit 45 of the drive base unit 40, wherein FIG. 30A is a plan view and FIG. is there. In FIG. 30, the gear mechanism 42, the screw holder 43, and the like are omitted as appropriate in order to clearly show the configuration around the turntable unit 45.

As shown in FIG. 30A, on the top of the turntable unit 45, there are provided three disk hooks 94 for engaging with the inner diameter of the disk. The disc hook 94 is attached to the turntable unit 45 main body so as to be rotatable in the vertical direction as shown in (B). It is designed to move between a lower disk release position that is not pressed.

The disk hook 94 is urged toward the upper disk holding position by a disk hook sleeve 94a and a disk hook spring 94b provided below the disk hook 94. Among them, the disc hook sleeve 94a is mounted on the turntable unit 45 so as to be slightly slidable in the vertical direction around the central shaft portion, and is formed by an upper plate, a tapered bottom plate, and a central cylindrical portion connecting these. ing. A disk hook spring 94b is mounted around the central cylindrical portion of the disk hook sleeve 94a, and urges the disk hook 94 upward through the disk hook sleeve 94a. That is, the disk hook sleeve 94a
The disc hook 94 is engaged with the disc hook 94 by its upper plate, and is pushed up by the urging force of the disc hook spring 94b. On the other hand, the disk hook sleeve 94a is provided with a release plate 95 described later by a tapered surface of a tapered bottom plate.
, And the release plate 95 is pushed down in accordance with the horizontal movement of the release plate 95.

(3) Load release mechanism of disk hook FIG. 30 shows the drive base unit 4 as described above.
FIG. 3 is a diagram showing the configuration around the turntable unit 45 of FIG. 0, particularly showing an initial state in which the load releasing mechanism of the disk hook 94 is locked and the disk hook 94 is on the upper disk holding position side. FIG. 30 (A)
As shown in FIG. 7, a release plate 95 for releasing the disk hook 94 and a cam gear 96 for driving the release plate 95 are provided around the turntable unit 45, and a lock link for locking the cam gear 96 is provided. 97, pickup unit 4
A lock plate 98 is provided which is pressed by 4 to release the lock link 97. Hereinafter, details of these members will be described.

The release plate 95 has an engaging portion 95a which engages with the cam gear 96 and a turntable unit 45.
And a load release portion 95b for releasing the load on the disk hook 94 by pressing down the disk hook sleeve 94a of the disk drive.

The cam gear 96 has a cam 96a on its upper surface for driving the release plate 95 every half rotation (180 degrees), and an engaging portion 96b on its lower surface for engaging with the lock link 97 every half rotation. have. Also,
The cam gear 96 is provided with one gear 4 constituting the gear mechanism 42.
By engaging with 2a, the driving force of the fourth motor 41 is transmitted, but is separated from the gear 42a every half rotation by a pair of intermittent portions provided in the gear portion.

The lock link 97 is provided rotatably about a shaft 97a. One end of the lock link 97 is engaged with the cam gear 96, and the lock link 97 is engaged with the lock plate 98 by a pin 97b provided at the other end. ing. The lock link 97 is urged by a spring 97c in a direction to engage with the cam gear 96.

The lock plate 98 is adapted to move horizontally along the longitudinal direction of the drive base 40a, similarly to the pickup unit 44. The lock plate 98 has a pin 97b of the lock link 97 at one end.
And the other end bent portion 98a is arranged to engage with the pickup unit 44. When the pickup unit 44 moves in the disk inner circumferential direction (left direction in the figure), the pickup unit 44 is pressed by this. Move in the same direction
The lock link 97 is released.

Hereinafter, the operation of releasing the load of the disk hook 94 with this configuration will be described with reference to FIGS. Here, FIG. 31 and FIG. 32 are views showing the load releasing mechanism of the disk hook, similarly to FIG. FIG. 31 shows a state in which the lock of the cam gear 96 is released from the initial state in FIG. 30, and FIG.
Respectively show the load released state.

First, as shown in FIG. 30A, in the initial state, the cam gear 96 is locked by the lock link 97 at the engagement portion 96b, and is separated from the gear 42a on the fourth motor 41 side. Is held in a closed state. In this state, the release plate 95
Due to the cam 96a of the cam gear 96, the cam gear 96 is at the non-operating side position (the position on the left side in the figure), and the load releasing portion 95b is
0 (B), the turntable unit 45
Of the disk hook sleeve 94a. As a result, the disc hook 94 is made up of the disc hook sleeve 94a and the disc hook spring 9.
4b holds the disc at an upper disc holding position that pushes the inner diameter of the disc. Further, at this time, as shown in FIG. 30A, the pickup unit 44 is at an initial position slightly outward from the innermost peripheral position of the disk.
Since the lock plate 95 is not pressed, the lock plate 95 is held at a position corresponding to the lock position of the lock link 97.

From such an initial state, FIG.
(A), when the pickup unit 44 is slightly moved in the disk inner circumferential direction (left direction in the figure) by the driving force of the fourth motor 41, the pickup unit 44 causes the bent portion 95a of the lock plate 95 to move. Is pressed, the lock plate 95 moves in the same direction, and the lock link 97 is released. As a result, the cam gear 96
By the urging force of the spring 95c of the release plate 95, it becomes possible to mesh with the gear 42a of the gear mechanism 42.

When the rotation direction of the fourth motor 41 is reversed from the state shown in FIG. 31A, the state shown in FIG.
As shown in FIG. 8, the moving direction of the pickup unit 44 is switched to the outer peripheral direction of the disk, and the cam gear 96 meshing with the gear 42a of the gear mechanism 42 rotates clockwise in FIG.
To the turntable unit 45 side. As a result, as shown in FIG.
5 is released from the disk hook sleeve 94.
Since the disk hook 94 is pressed down by the disk hook spring 94b because the disk hook 94 is pressed down by engaging with the tapered surface of the tapered bottom plate a, the disk hook 94 is free to rotate and does not press the inner diameter of the disk. Move to the lower disk release position.

[5. Shutter unit] FIGS. 33 and 34
Are the shutter units 5 when the door open link 6 is at the shutter closed position and when the door open link 6 is at the shutter open position.
0A is a plan view showing a door open link 6 in each of FIGS.
(B) is a front view showing the state of the shutter unit 50 corresponding to (A).

First, as shown in FIG. 33B, the door plate 53 is provided slidably up and down with respect to the front panel 50a of the shutter unit 50 by a guide groove 53a, and is provided by a spring 53b. The insertion port 51 is urged downward on the closed side. A door link 54 connecting the door open link 6 and the door plate 53 is rotatable about a shaft 54a between a step 53c provided on a part of the door plate 53 and the front panel 50a. It is provided in. The door link 54 is provided with an engaging portion 54b that engages with the corresponding pressing portion 6c of the door open link 6, and a pin 54c that engages with the door plate 53. In the figure, reference numeral 50b denotes a front panel 50 for inserting the pressing portion 6c of the door open link 6.
a is an insertion groove provided in a. That is, as shown in FIGS. 34A and 34B, when the door open link 6 rotates to the shutter open position, the pressing portion 6c is moved from the back to the front of the front panel 50a through the insertion groove 50b. The door link 54 is made to protrude so as to be engaged with the engagement portion 54b of the door link 54.

With this configuration, the door plate 53 is moved up and down via the door link 54 in accordance with the turning position of the door open link 6, and the shutter 52 is opened and closed. That is, when the door open link 6 is at the shutter closing position (FIGS. 2, 4 to 8) as shown in FIG. 33A, as shown in FIG. 54 is at a clockwise rotation position in the figure, the door plate 53 is held at the lower closed position by the urging force of the spring 53a, and the shutter 52 is
1 is closed. When the door open link 6 is in the shutter open position (FIG. 3) as shown in FIG. 34A, the door link 54 is turned counterclockwise as shown in FIG. The door plate 53 is held at the upper open position, and the shutter 52 opens the disc insertion port 51.

[6. Damper Unit] (1) Mechanism Anti-Vibration Mechanism As described above, as shown in FIG.
The mechanism consisting of the 0, 20, the stage unit 30, and the drive base unit 40 attenuates external vibrations during disc playback, so that four dampers 63 and four damper springs 6 of the damper unit 60 are provided to the vehicle.
4 and is supported in a floating state.

(2) Fixing / Release of the Vibration Isolation Mechanism At the time of disk loading / ejecting, the vibration elimination mechanism is adjusted to match the position of the disk insertion port 51 of the shutter unit 50 with the disk passage 39 of the stage unit 30 of the mechanism. With the mechanism fixed, the damper unit 6
The mechanism is fixed to zero. Therefore, during disk reproduction following disk loading, the anti-vibration mechanism is released and the mechanism is brought into a floating state. Such fixing / releasing of the vibration isolation mechanism will be specifically described with reference to FIGS.

FIGS. 35A and 35B are side views showing the positions of the slide plate 13 corresponding to the fixed position and the released position of the anti-vibration mechanism, respectively. FIG.
And FIG. 37 are views showing a fixed state and a released state of the vibration isolating mechanism, respectively. FIG. Further, FIGS. 38 (A) and (B)
5 is a front view showing a fixed state and a released state of the vibration isolating mechanism, respectively. In order to clearly show the state of the lock portion and the damper spring 64, the damper 63 and the like are omitted.

First, as shown in FIGS. 36 (A) and (B), one damper plate 61 has an engaging portion 13c of the slide plate 13 and an engaging portion 18c of the lock link 18 on the same side, respectively. Lock portions 61a and 61b that engage and lock this are provided respectively. FIG.
(B) and (C), the other damper plate 62 also has the engaging portion 14 of the slide plate 14 on the same side.
Lock portions 62a and 62b are provided to engage and lock the engaging portions 19c of the lock link 19 and the lock link 19, respectively.

As described above, the pair of lock links 18 and 19 move the slide plates 13 and 14 due to the engagement relationship between the pins 18b and 19b and the groove cams 13b and 14b of the slide plates 13 and 14. With this, it is turned. More specifically, as shown in FIGS. 35A and 35B, the lowermost step of the step cam 13a of one slide plate 13 is longer than the other step, and the moving stroke corresponding to the lowermost step Within the range, the operation of the lock link 18 by the groove cam 13b as shown in FIGS. 36 and 37 is performed. Although not shown, the lowermost step of the step cam 14a of the other slide plate 14 is similarly set. That is,
As shown in FIG. 35B, the slide plate 13,
When the pin 14b of the stage unit 30 moves from the initial position and the pin 30b of the stage unit 30 reaches the lowermost inner end (the end closer to the next step) of the stair cams 13a, 14a, the lock links 18, 19 become The release position is reached as shown in FIG.

With this configuration, FIG. 35A and FIG.
(A), a pair of slide plates 13,
36B is the initial position, that is, when the pin 30b of the stage unit 30 is at the outermost end of the lowermost step of the stair cams 13a and 14a and the lock links 18 and 19 are at the fixed position. And (C), the engaging portions 13c and 14c of the slide plates 13 and 14 and the engaging portions 18c and 19c of the lock links 18 and 19 correspond to the corresponding lock portions 61a, 61b and 6 of the damper plates 61 and 62.
2a and 62b, respectively. In this case, as shown in FIG. 36B, the engaging portion 13c of one slide plate 13 and the engaging portion 18c of the lock link 18 are connected to the lock portion 6 of the damper plate 61 on the same side.
36 (a) and 61 (b), respectively, so as to be sandwiched from the outside, and as shown in FIG. 36 (C), the engaging portion 14c of the other slide plate 14 and the lock link 1 are engaged.
9 engages with the lock portions 62a, 62b of the damper plate 62 on the same side.
Each engages so as to enter from the space between 2b. When the anti-vibration mechanism is locked as described above, the mechanism is moved to a predetermined position with respect to the shutter unit 50 and the damper unit 60, that is, the disk insertion port 51 of the shutter unit 50 and the stage unit 3 of the mechanism.
0 is fixed to a position where the position of the disc passage 39 coincides with the position of the disc passage 39.

On the other hand, as shown in FIGS. 35 (B) and 37 (A), the slide plates 13 and 14 move, and the release position, that is, the pin 30b of the stage unit 30 is moved to the stair cam 13a. , 14a reach the inner end of the lowermost stage (the end closer to the next stage), and lock links 18, 19 are reached.
Is reached the release position, the slide plate 13,
14 and the lock links 18 and 19
When the engaging portions 18c and 19c are separated from the damper unit 60, the lock of the anti-vibration mechanism is released, and the anti-vibration mechanism is operated. In this case, as shown in FIG. 37B, the engaging portion 13c of the one slide plate 13 and the engaging portion 18c of the lock link 18 are separated from the lock portions 61a and 61b of the damper plate 61 on the same side. 37, the engaging portion 14c of the other slide plate 14 and the engaging portion 19c of the lock link 19 are connected to the lock portion 62a of the damper plate 62 on the same side as shown in FIG. , 62b so that the locking portions 62a, 62b
Each moves to the space between b. When the lock of the anti-vibration mechanism is released in this manner, the mechanism is supported by the vehicle in a floating state via the damper 63 and the damper spring 64.

[D. Operation] Hereinafter, a series of operations from storage of a disk to reproduction of the disk, a return operation after the reproduction of the disk, and an operation of ejecting the disk will be sequentially described as operations of the disk reproduction apparatus of the present embodiment as described above. .

[1. Operation up to disk playback] FIG.
Outlines a series of operations in the disk reproducing apparatus of the present embodiment, including a preparatory operation for storing a disk and setting a reproduction standby state, and a disk selection / reproduction operation from the disk reproduction standby state to the disk reproduction. It is a flowchart shown. The outline of the operation flow will be described below with reference to FIG.

First, in step 101, the disk holder 21 is positioned at a position where a disk can be loaded according to the position of the empty disk holder #n into which a disk is to be inserted. Prepare for insertion (waiting for disk insertion). Then, in this state, when a disc is inserted from the disc insertion slot 51, the inserted disc is pulled in by the loading roller 33 in the next step 103, and in the subsequent step 104, the stock arm 36 is inserted into the disc holder #n. To be stored. Here, when inserting a plurality of disks, steps 101 to 104 are repeated according to the number of disks. Then, after the disk is stored, in step 105, the lock of the anti-vibration mechanism of the mechanism is released, and the mechanism is brought into a floating state to prepare for disk reproduction (disk reproduction standby state).

Following the above preparation operation, or based on a disc reproduction command, a selection command, or the like, step 10
6 to 113 are performed. That is, first, the process proceeds to step 106, where the stage unit 3
0 is positioned at a disk reproduction position corresponding to the disk to be reproduced. Next, in step 107,
By using the select plates 4, 5, 24, and 25, the separation position of the disk holder 21 is selected according to the disk to be reproduced. In the subsequent step 108, the disk holder 21 above the separation position is raised to form a space. .
Then, in step 109, the drive base unit 40 is inserted into the space by separating the disk holder 21, and in the following step 110, the turntable unit 45 is operated by a combination of the operation of the disk hook 94 and the slight lowering of the disk holder 21. Chucking disc on top.

Further, in step 111, after slightly raising the disk holder 21, the drive base unit 40 is slightly moved outward, so that the disk holder 2
1 Pull out the disk from inside. Finally, step 11
After raising the disk holder 21 in 2, the disk is reproduced in step 113. Hereinafter, the operation of each of steps 101 to 113 will be individually described.

[Step 101: Positioning of Disk Holder] First, the mode plate 3 at the initial position P0 as shown in FIG. 2 is rotated clockwise in FIG. 5), the lifting power link 8 is moved to the disk holder lifting position, and the idler gear 12b of the lifting gear mechanism 12 is switched to the gear train 12d on the disk holder lifting side (FIG. 10). Subsequently, the second motor 11 raises the disk holder 21 via the lifting gear mechanism 12 and the disk holder lifting mechanism 22 as shown in FIG. 14, and positions the disk holder 21 at a position where a disk can be loaded. That is, the position of the n-th vacant disk holder #n into which the disk is to be inserted is aligned with the position of the disk insertion port 51 of the shutter unit 50.
And hold it in this position.

[Step 102: shutter release] Following the positioning of the disk holder as described above, the first
By rotating the motor 1 to move the mode plate 3 to the shutter open position Pa1 (FIG. 3) which is the end position, the door open link 6 is moved to the shutter open position, and the shutter unit fixed to the vehicle side The shutter 52 of 50 is opened (FIG. 34). At this point, the mechanism is in a disk insertion waiting state.

[Step 103: Disk Loading] In the above-described disk insertion standby state, a disk is inserted from the disk insertion port 51, and the two detection elements 81 and 82 on the entrance side are switched to the detection state, and the disk is loaded. When the insertion is detected (FIG. 21), the third motor 31
By rotating the loading roller 33, the disk D is pulled in. When one end of the disk D moves beyond the loading roller 33 to the inside of the mechanism by the start of the pulling in, the two detection elements 83 on the back side,
84 also switches to the detection state. When the operation proceeds further and most of the disk D moves deeper than the loading roller 33, the two detection elements 81 and 82 on the entrance side are switched to the non-detection state again.

At the time of such disk loading, since the mode plate 3 is at the shutter open position Pa1 as shown in FIG. 3, the stage power link 9 is at the second operating position, and As shown in (B), the idler control plate 35 is also in the second operating position. Therefore, as shown in FIG. 25 (B), the horizontal drive gear mechanism 32 includes the drive screw 3
4 is separated from the third motor 31, and the drive screw 34 does not rotate unnecessarily.

[Step 104: Disk Storage] By the rotation of the disk loading roller 33 as described above,
When the disk D reaches the disk loading completion detection position D2 shown in FIG. 21 and moves away from the loading roller 33, the two detection elements 83 and 84 on the rear side are switched to a non-detection state, and the completion of disk loading by the loading roller 33 is completed. Is detected. In response to this detection, the mode plate 3 at the shutter open position Pa1 as shown in FIG. 3 is rotated counterclockwise in the figure by the first motor 1 to move from the roller attaching / detaching position Pa2 (FIG. 4) to the disk pushing position. By moving to the position Pa3 (FIG. 5), the stock arm 36 is rotated through the operation of the stage power link 9 and the idler control plate 35, and the disk D is pushed.

That is, as shown in FIG. 5, when the mode plate 3 moves to the disk pushing position Pa3, the stage power link 9 moves to the third operating position, and as shown in FIG. Idler control plate 3
5 also moves to the third operating position. Therefore, as shown in FIG. 25C, the idler control plate 3
With the movement of 5, the stock arm 36 moves to the pushing position as shown by the two-dot chain line in FIG. 20A, and pushes the disk D into the disk holding position D0. As a result, the disk D is stored in the disk holder 21 as shown in FIG.
Is held by At this time, the gear train 32c on the drive screw side of the horizontal drive gear mechanism 32 is disconnected from the third motor 31 as shown in FIG.

[Step 105: Unlocking of Anti-Vibration Mechanism] The storage of all (one or a plurality of) disks in the disk holder 21 is completed by the above steps 101 to 104 or by repetition thereof. Thereafter, the mode plate 3 at the disc pushing position Pa3 as shown in FIG. 5 is further rotated counterclockwise in the drawing by the first motor 1 and moved to the initial position P0, thereby moving the power link 8 up and down. Is moved to the stage elevating position, and the idler gear 12b of the elevating gear mechanism 12 is switched to the gear train 12c on the stage elevating side (FIG. 9). In this case, since the stage power link 9 moves to the first operation position, the gear train 32c on the drive screw side of the horizontal drive gear mechanism 32 as shown in FIG.
The motor is connected to the third motor 31 via a gear train 32a. Subsequently, the slide plates 13 and 14 are slid horizontally by the second motor 11 via the elevating gear mechanism 12 to release the lock of the anti-vibration mechanism.

That is, at the time of disc loading, the slide plates 13 and 14 are set in the state shown in FIG.
36 and the initial position as shown in FIG.
As shown in (B) and (C) of FIG.
3, 14 of the engaging portions 13c, 14c and the lock link 18,
The engagement portions 18c, 19c of the damper plates 61, 6
2 corresponding lock portions 61a, 61b, 62a, 62b
, Respectively, and the anti-vibration mechanism is locked.

From this state, the slide plate 1
35, (B) and (A) of FIG.
, Ie, the stage unit 3
When the zero pin 30b reaches the lowermost inner end of the stair cams 13a, 14a (the end closer to the next step), the lock links 18, 19 also reach the release position, and the slide plates 13, 14 are reached. When the engaging portions 13c and 14c of the lock members 18c and 19c of the lock links 18 and 19 are separated from the damper unit 60, the lock of the vibration isolation mechanism is released. As a result, the mechanism will be
3 is supported in a floating state via the damper spring 64, and the disk playback standby state is established.

[Step 106: Stage Unit Positioning] In the above-described disk reproduction standby state, the stage unit 30 corresponding to the disk to be reproduced is set.
Is performed. Here, the target disk is determined automatically according to a preset reproduction program, or manually based on a disk reproduction command, a selection command, or the like.

That is, the second motor 11 is further rotated to raise the stage unit 30, and the disk reproducing position corresponding to the disk to be reproduced, that is, according to the n-th stage disk holder #n holding the disk. The disc playback position. In this case, FIG.
(A) and (B), as shown in FIG.
The pin 30b moves sequentially from the lowermost stage to the uppermost stage of the stair cams 13a, 14a according to the moving distance of the slide plates 13, 14, so that the target position of the disk holder #n at the nth stage , The moving distance of the slide plates 13 and 14 is controlled.

For example, when the uppermost disk holder # 6 (FIG. 1) is targeted, the slide plates 13, 14 are moved to the opposite extreme positions as shown by the two-dot chain line in FIG. Therefore, the moving distance becomes the maximum. In this case, the stage unit 30
As shown by the dashed line, it rises to the highest position. Conversely, when the lowermost disk holder # 1 is targeted, the slide plates 13 and 14 are stopped at the unlock position of the anti-vibration mechanism as shown in FIG. It will be kept at the initial position.

[Step 107: Selection of Disk Holder Separation Position] As described above, the target disk holder #
After the stage unit 30 is raised in accordance with the position n, the first motor 1 is again rotated to rotate the mode plate 3 at the initial position P0 as shown in FIG. Selection position P of target disk holder #n
By moving to bn, select plate 4,
5, 24, and 25 are moved to the selected position of the disk holder #n, and the separation position of the disk holder is selected.

Here, the select plates 4, 5, 24,
In the initial state, 25 is at the selected position of the lowermost disk holder # 1 as shown in FIG. 15, so that when the mode plate 3 is moved to the disk holder selected position Pb1 as shown in FIG. , Select plate 4,
5, 24 and 25 are held at the same position. On the other hand, when the mode plate 3 is moved to the disk holder selection position Pb6 as shown in FIG.
The select plates 4, 5, 24, and 25 move to the position where the uppermost disk holder # 6 is selected as shown in FIG.

When the mode plate 3 moves to any of the disk holder selection positions Pb1 to Pb6, as shown in FIGS. 6 to 8, the lifting power link 8 is moved to the disk holder lifting position. Then, as shown in FIG. 10, the idler gear 12b of the lifting gear mechanism 12 is switched to the gear train 12d on the disk holder lifting / lowering side. That is, the disk holder elevating mechanism 22 is connected to the second motor 11 via the elevating gear mechanism 12.

On the other hand, similarly to the case where the mode plate 3 is at the initial position P0 (FIG. 2), the case where the mode plate 3 is at any of the disk holder selection positions Pb1 to Pb6 is shown in FIGS. Like, stage power link 9
Is held in the first operating position, and as shown in FIG. 25A, the idler control plate 35 is also held in the first operating position. And is connected to the third motor 31.

[Step 108: Disc Holder Separation]
Following the selection of the separation position as described above, the second motor 11
By rotating the disk holder, the disk holder elevating mechanism 22 as shown in FIG. 14 is operated, the disk holder screw 23 is rotated, and the disk holder above the separation position is raised. As a result, a space for inserting the drive base unit is formed at the separation position of the disk holder.

For example, as shown in FIG. 15, when the lowermost disk holder # 1 is selected, as shown in FIG.
The upper disk holders # 1 to # 5 including the disk holder # 1 are connected to the uppermost disk holder # 6 by the engagement between the claws 25c and the protrusions 21a of the disk holder # 1, and are integrally raised. Let it. Similarly, the other upper select plate 24 (not shown) has a disk holder # 1.
Disk holder # 1 to ascend ~ # 6 integrally
# 6 rises to an upper position as shown in FIG. 17B in a stable state. As a result, a space for inserting the drive base unit is formed below the lowermost disk holder # 1.

On the other hand, as shown in FIG. 16, when the uppermost disk holder # 6 is selected, FIG.
As shown in (B) of FIG.
The engagement between the pawl 5c and the projection 21a of the disk holder # 5 holds the lower disk holders # 1 to # 5 including the disk holder # 5 at the lower position. Similarly, the other lower select plate 4 (not shown) holds the disk holders # 1 to # 5 at the lower position, so that only the uppermost disk holder # 6 is in the upper position as shown in FIG. To rise. As a result, a space for inserting the drive base unit is formed between the uppermost disk holder # 6 and the second upper disk holder # 5.

[Step 109: Inserting Drive Base Unit] Subsequently, the drive base unit 40 is inserted into the space formed as a result of the above-described disk holder separation. That is, at the time of disk holder separation,
As described above, since the drive screw 34 is connected to the third motor 31 via the horizontal drive gear mechanism 32, by rotating the third motor 31, the drive screw 34 rotates and the drive base unit 40 moves horizontally. This horizontal movement causes the drive base unit 40 to move from the initial position shown by the solid line in FIG. 27 to the chucking position shown by the two-dot chain line in FIG. Is positioned at the chucking position. As a result, the drive base unit 40 is inserted into the space formed by the disk holder separation, and the turntable unit 45 is held at a position overlapping the disk held by the disk holder 21.

[Step 110: Disk Chucking] After inserting the drive base unit 40 into the space as described above, the fourth motor 41 is rotated through the gear mechanism 42 as shown in FIG. Then, the lead screw 43 is rotated, and the load release mechanism of the disk hook 94 is operated using the movement of the pickup unit 44.

That is, as shown in FIG. 30, in the initial state, the pickup unit 44 is at the initial position adjacent to the turntable unit 45, the cam gear 96 of the load release mechanism is locked by the lock link 97, and the fourth motor 41. From this state, the fourth motor 41 is rotated to move the pickup unit 44 to the innermost position slightly overlapping the turntable unit 45 as shown in FIG. 95 moves in the same direction to release the lock link 97, and the cam gear 96 can mesh with the gear 42a of the gear mechanism 42.

Subsequently, the fourth motor 41 is reversed to obtain the state shown in FIG.
2, the cam gear 9 meshed with the gear mechanism 42
6 is rotated 90 degrees to release plate 9.
The cam 5 is slightly moved toward the turntable unit 45 by cam driving, and the disc hook sleeve 94a is pushed down to release the load of the disc hook 94. As a result, the disk hook 94 moves from the upper disk holding position that presses the inner diameter of the disk to the lower disk release position that does not press the inner diameter of the disk, so that the disk can be positioned on the turntable unit 45.

Following the release of the load on the disk hook as described above, the second motor 11 is rotated to lower the disk holder above the separation position, and the disk held by the selected disk holder #n Is positioned on the turntable unit 45. In this case, the selected disk holder #n is
By lowering the disk holder slightly below the position corresponding to the height corresponding to 5, the disk can be pressed onto the turntable unit 45 by utilizing the elasticity of the disk holder, and the disk can be reliably positioned.

Following the above-described positioning of the disk, the fourth motor 41 is further rotated, and the cam gear 96 is further rotated by 90 degrees, so that the release plate 95 is returned to the initial position, and the disk hook sleeve 9 is rotated.
Release 4a. As a result, the disc hook 94 is held at the upper position by the disc hook sleeve 94a and the disc hook spring 94b, and the disc D is pushed by pressing the inner diameter of the disc D to turn the disc D into the turntable unit 4.
5 securely.

[Step 111: Pulling out a disk] Following the above-described disk chucking, the second motor 11 is rotated to rotate the disk holder above the separation position to the selected disk holder #n. It is slightly raised to a position corresponding to the height of the table unit 45. From this state, by rotating the third motor 31 and the drive screw 34, the drive base unit 40 is slightly moved from the chucking position as shown by the two-dot chain line in FIG. 27 to the initial position. To a play position between these positions. This play position is determined by the drive base unit 40
Of the position spring 48 is the position plate 86
This is the position where it engages with the central slit 86a. Then, by such horizontal movement of the drive base unit 40, the disk D chucked on the turntable unit 45 is pulled out from the disk holder 21 against the urging force of the disk hold spring 21b as shown in FIG. .

[Step 112: Disk Holder Raising]
Following the above-described disc chucking and disc pulling, the second motor 11 is rotated to raise the disc holder above the separation position again to the upper position so that they do not hinder disc reproduction. Let it.

[Step 113: Disc Playback] After a series of operations as described above, normal disc playback is performed.
That is, the turntable unit 45 is rotated by the spindle motor 46 and the pickup unit 44 is horizontally moved by the fourth motor 41 to reproduce the disk D.

[2. Return Operation After Disc Playback] FIG.
In the disc reproducing apparatus of the present embodiment, after the disc is reproduced, the disc is stored in a disc holder, and the outline of the return operation until returning to the disc reproduction standby state in preparation for the next disc reproducing operation is outlined. It is a flowchart shown. In the following, referring to FIG.
The outline of the operation flow will be described.

First, in step 201, the disk holder 21 at the raised position is lowered. Next, in step 202, the disk on the turntable unit 45 is stored in the disk holder 21 by moving the drive base unit 40 inward. afterwards,
In step 203, the disk is removed from the turntable unit 45 by releasing the load of the disk hook 94 and raising the disk holder 21. Thereafter, in step 204, the drive base unit 40 is returned to the initial position. In the subsequent step 205, the disk holder 21 is lowered to return to the initial position.

Then, when another disc stored in the mechanism is subsequently reproduced after reproducing the disc,
By performing the above-described series of disc selection / playback operations (steps 106 to 113) following the return operation in steps 201 to 205 as described above, the next disc can be played. The following describes each of steps 201 to 205
Will be described individually.

[Step 201: Disc Holder Down]
At the end of the disk reproduction, the mode plate 3
As shown in FIG. 8, since the disc is at the selected position Pbn of the disc holder #n holding the reproduced disc, as shown in FIG. 10, the lifting power link 8 is located at the disc holder lifting and lowering position. The gear mechanism 12 includes the second motor 1
1 is connected to a disk holder elevating mechanism 22.

By rotating the second motor 11 from such a state, the disk holder at the upper position (the disk holder above the separation position) is lowered to a height corresponding to the reproduced disk. That is, the disk holder is lowered to a position where the disk holder #n holding the disk has a height corresponding to the disk held on the turntable unit 45.

[Step 202: Disk Storage] As described above, at the end of the disk reproduction, the mode plate 3 is at the selected position Pbn of the disk holder #n as shown in FIGS. As shown in FIG. 6A, since the mode plate 3 is at the selected position Pbn of the disk holder #n, as shown in FIGS. 6 to 8, the stage power link 9 is at the first operating position, and Gear mechanism 32 connects the third motor 31 to the drive screw 34
It is connected to.

Therefore, following the lowering of the disk holder as described above, the third motor 31 is rotated to allow the drive base unit 4 at the disk reproducing position to rotate.
0 is again horizontally moved to a chucking position as shown by a two-dot chain line in FIG. By such horizontal movement of the drive base unit 40, the disc held on the turntable unit 45 is inserted into the corresponding disc holder #n. In this case, as shown in FIG. 13, the disk D gets over the disk hold springs 21b on both sides and reaches the disk holding position in the disk holder 21, and is held at that position by the disk hold spring 21b.

[Step 203: Removal of Disk] As described above, after the disk is stored in the disk holder, the fourth motor 41 is rotated through the gear mechanism 42 as shown in FIG. By rotating the screw 43 and utilizing the movement of the pickup unit 44, the load releasing mechanism of the disk hook is operated.

That is, similarly to the above-described disc chucking, the rotation of the fourth motor 41 moves the pickup unit 44 from the initial position as shown in FIG.
By moving the lock plate 95 to the innermost position as shown in FIG.
The cam gear 96 can be connected to the gear mechanism 42. Subsequently, the fourth motor 41 is reversed to rotate the cam gear 96 by 90 degrees as shown in FIG.
Side, and the disk hook sleeve 94a is pushed down to release the load on the disk hook 94. As a result, the disk hook 94 moves to a lower disk release position where the inner diameter of the disk is not pressed, and the disk can be removed from the turntable unit 45.

Following the release of the load on the disk hook as described above, by rotating the second motor 11, the disk holder above the separation position is raised again, and the disk held by the disk holder #n is turned. Remove from the table unit 45. Following the removal of the disk, the fourth motor 41 is further rotated to rotate the cam gear 96 further by 90 degrees, thereby returning the release plate 95 to the initial position and releasing the disk hook sleeve 94a. As a result, the disk hook 94 returns to the upper disk holding position.

[Step 204: Returning the Drive Base Unit] Following the removal of the disk as described above, the drive base unit 40 at the chucking position is indicated by a solid line in FIG. 27 by rotating the third motor 31. It is returned to such an initial position.

[Step 205: Return Disk Holder]
Following the return of the drive base unit 40 as described above, by rotating the second motor 11, the disk holder 21 above the separation position is lowered again, and FIG.
4 (B), and return to the lower position as shown in FIGS. 17 and 18 (A). Thereafter, by rotating the first motor 1, the mode plate 3 is placed in the disk holder #.
The selected position Pbn (FIGS. 6 to 8) is returned to the initial position P0 (FIG. 2). As a result, the mechanism returns to the disk reproduction standby state as described above.

[3. Disc Ejecting Operation] FIG. 41 is a flowchart schematically showing a disc ejecting operation when a disc eject command is issued when the disc reproducing apparatus of the present embodiment is in a disc reproducing standby state. The outline of the operation flow will be described below with reference to FIG.

First, in step 301, the stage unit 30 is returned to the initial position.
In step 2, the mechanism is locked and the mechanism is fixed. Next, in step 303, the disk holder 21 is positioned at a position where the disk can be ejected according to the position of the disk holder #n from which the disk is to be ejected. Thereafter, in step 304, the shutter 52 is opened, and the disc is pushed out of the disc holder #n by the eject arm 7, and in step 305, the disc holder #n
The disc pushed out of the disc is ejected by the loading roller 33 and moved to a position where the disc can be taken out from the disc insertion slot 51.

If the disc eject command is issued at the time after the reproduction of the disc, the above-mentioned return operation after the reproduction of the disc (steps 201 to 205) is performed, and then the above steps 301 to 205 are performed. The disk ejection operation of 305 will be performed. Hereinafter, the operation of each of the steps 301 to 305 will be individually described.

[Step 301: Return of Stage Unit] First, at the end of the disk storage operation, the mode plate 3 has returned to the initial position P0 as shown in FIG. The power link 8 is
The stage unit is in the elevating position and the elevating gear mechanism 12
Connects the second motor 11 to the slide plate 13.

Therefore, when the stage unit 30 is located at a position corresponding to one of the disk holders # 2 to # 6 other than the disk holder # 1 at the lowermost stage, the second motor 11 is rotated to ,
14 to return the stage unit 30 to the initial position. On the other hand, when the stage unit 30 is at the initial position corresponding to the lowermost disk holder # 1, the stage unit 30 is held at the initial position without rotating the second motor 11. .

[Step 302: Locking of anti-vibration mechanism] Following the return of the stage unit 30 as described above, the second motor 11 is further rotated to return the slide plates 13 and 14 to the initial position, and the mechanism is released. Lock the anti-vibration mechanism.

That is, when the stage unit 30 is returned, the slide plates 13 and 14 are at the release positions as shown in FIGS. 35B and 37A, and together with the lock links 18 and 19. Damper plate 6
1 and 62, the anti-vibration mechanism is unlocked, and the mechanism is supported in a floating state with respect to the vehicle. From this state, the slide plate 13,
The slide plates 13 and 14 are moved to the initial positions as shown in FIGS. 35A and 36A by moving the step 14 by a movement stroke corresponding to the lowermost step of the stair cams 13a and 14a. It returns and (B) of FIG.
(C), the slide plates 13 and 14 and the lock links 18 and 19 are engaged with the damper plates 61 and 62, respectively, and the anti-vibration mechanism is locked. as a result,
The mechanism is fixed at a position where the disc insertion port 51 of the shutter unit 50 and the disc passage 39 of the stage unit 30 coincide.

[Step 303: Positioning of Disk Holder] Following the locking of the anti-vibration mechanism as described above, the mode plate 3 at the initial position P0 as shown in FIG.
By rotating the motor 1 to the disc pushing position Pa3 (FIG. 5), the lifting power link 8 is moved.
Is moved to the disk holder elevating position to switch the elevating gear mechanism 12, and the second motor 11 is connected to the disk holder elevating mechanism 22 (FIG. 9). Subsequently, the second motor 11
By rotating the disk holder elevating mechanism 22
The disk holder 21 is lifted up through the position, and positioned at a position where the disk can be ejected. That is, the disc holder 21 is raised to a position where the position of the disc holder #n at the n-th stage where the disc is to be ejected coincides with the disc insertion port 51 of the shutter unit 50, and is held at this position.

[Step 304: Opening the shutter and pushing out the disk] Following the positioning of the disk holder as described above, the first motor 1 is further rotated to move the mode plate 3 to the shutter opening position Pa1 (FIG. By moving the door open link 6 to 3), the door open link 6 is moved to the shutter open position, and the shutter 52 of the shutter unit 50 fixed to the vehicle side is opened (FIG. 34). At the same time, the movement of the mode plate 3 to the shutter open position Pa1 causes the eject arm 7 to move from the disk release position to the disk eject position as shown in FIG. And is pressed against the loading roller 33.

[Step 305: Disk Eject]
As described above, when the disk D is pushed out from the disk holder #n, the third motor 31 is started, the rotation of the loading roller 33 is started, and the discharge of the disk is started. When the ejection of the disk is started in this way, the two detection elements 83 and 84 on the rear side are switched to the detection state. When the operation further proceeds and a part of the disk D projects from the entrance 39a of the disk passage 39 of the mechanism, the two detection elements 81 and 82 on the entrance side also switch to the detection state. Finally, when the disc D reaches the disc ejection completion detection position D3 shown in FIG. 22 and most of the disc D projects from the entrance 39a of the disc passage 39,
The two detection elements 83 and 84 on the far side are switched to the non-detection state, and the completion of the disc ejection by the loading roller 33 is detected. At this point, by stopping the third motor 31 and stopping the loading roller 33,
The disc D is held by the loading roller 33 at a position where the disc D can be removed from the disc insertion slot 51. That is, the mechanism is in a disk removal standby state.

At the time of such a disk ejection, the mode plate 3 is at the shutter open position Pa1 as in the case of the disk loading, so that the stage power link 9 and the idler control plate 35 are at the second operating position. Therefore, the horizontal drive gear mechanism 32 separates the drive screw 34 from the third motor 31 and the drive screw 34 does not rotate unnecessarily.

[E. Effects] The effects of the disk reproducing apparatus according to the present embodiment as described above are as follows. First,
According to the present invention, by holding the loading roller 33 in a fixed position and biasing the lower disk guide 38 by a spring, the disk loading / ejection mechanism can be simplified and the number of parts can be reduced. That is, as compared with the case where the loading roller 33 is biased by a spring, the mechanism can be simplified by the amount that an independent supporting member such as a roller bracket for movably supporting the loading roller 33 is unnecessary, and the number of parts can be reduced. it can. Further, as compared with the case where the disk is pressed by a dedicated disk pressing means such as a disk pressing member, the lower disk guide serving as the disk guide means also serves as the disk pressing means, so that the dedicated disk pressing means becomes unnecessary. The mechanism can be simplified and the number of parts can be reduced.

In this embodiment, a stopper 3 projecting upward is provided on a part of the lower disc guide 38.
8c is brought into contact with the lower surface of the stage 30a,
Since the operation range of the lower disk guide 38 is regulated, the mechanism can be further simplified and the number of parts can be reduced because an independent stopper member is not required.

Further, a concave portion 38d is provided at a position facing the loading roller 33 in the lower disk guide 38.
When the disk is inserted, the disk can be inserted into the concave portion, so that the disk can be smoothly guided to a position where the disk is pressed against the loading roller 33. Therefore, disk loading by the loading roller 33 can be started smoothly.

In this connection, when the disc is not inserted,
Even when the lower disk guide 38 is at the position closest to the loading roller 33, the loading roller 33 can idle in the recess 38d, so that an excessive load due to the urging of the lower disk guide 38 with respect to the loading roller 33 is applied. Is not added. This also leads to the advantage that the operation timing for starting / stopping the loading roller 33 can be freely selected.

[F. Other Embodiments] The present invention
The present invention is not limited to the above embodiment, and various other embodiments can be implemented within the scope of the present invention. That is, the specific configuration of each unit can be appropriately selected,
The specific configuration of the loading roller and the disc guide can be appropriately selected.

For example, in the above-described embodiment, the stopper 38c is provided on the lower disk guide 38. However, peripheral members of the lower disk guide 38, for example, the lower surface of the upper disk guide 37 and the stage 30a, It is also conceivable to provide a protruding stopper that abuts. In addition, lower disk guide 3
A configuration in which the concave portion 38d is not provided in the disk 8 is also possible. In this case, the disk can be pressed against the loading roller 33 by the pushing force accompanying the insertion of the disk.

Further, in the above-described embodiment, an example of the operation of the disk reproducing device has been described. However, the specific operation of the disk reproducing device can be appropriately selected according to the configuration. In addition, various different operation programs can be appropriately set for an apparatus having an equivalent mechanism.

In the above embodiment,
As an example, a disk reproducing apparatus capable of supporting a plurality of disk holders in a stacked state, forming a space by using the elevating operation of the disk holder, and inserting a drive base unit into the space to reproduce a disk. The disc loading device of the present invention was applied to
The present invention can be similarly applied to various types of disk reproducing devices as long as the disk reproducing device includes a disk loading / ejecting mechanism using a loading roller, and similarly excellent effects can be obtained. .

[0189]

As described above, according to the present invention,
By holding the loading roller at a fixed position and biasing the lower disk guide by a spring, it is possible to provide a disk loading device that can contribute to simplification of the mechanism and reduction in the number of parts.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view schematically showing an entire disc reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view showing an initial state of the lower chassis unit of FIG. 1;

FIG. 3 is a plan view showing a control state when the mode plate of FIG. 2 is at a shutter open position.

FIG. 4 is a plan view showing a control state when the mode plate of FIG. 2 is at a roller attaching / detaching position.

FIG. 5 is a plan view showing a control state when the mode plate of FIG. 2 is at a disc pushing position.

FIG. 6 is a plan view showing a control state when the mode plate of FIG. 2 is at a first disk holder selection position.

FIG. 7 is a plan view showing a control state when the mode plate of FIG. 2 is at a second disk holder selection position.

FIG. 8 is a plan view showing a control state when the mode plate of FIG. 2 is at a sixth disk holder selection position.

FIG. 9A is a plan view showing a lifting power link at a stage unit lifting position similar to FIG. 2; FIG.
FIG. 4 is a side view showing a state of the lifting gear mechanism corresponding to FIG.

FIG. 10A is a plan view showing a lifting power link at a disk holder lifting position as in FIGS. 3 to 8;
(B) is a side view showing the state of the lifting gear mechanism corresponding to (A).

11A and 11B are diagrams showing a configuration for elevating and lowering the stage unit using the slide plate of FIG. 1, wherein FIGS. 11A and 11B are a plan view and a front view of a mechanism, respectively.

12 (A) and (B) are side views showing the operation of the slide plate of FIG. 11, and correspond to the views of arrows X and Y of FIG. 11 (A), respectively.

FIG. 13 is a plan view showing the configuration of the disk holder of FIG.

14A is a plan view showing the configuration of the disk holder elevating mechanism of FIG. 1, and FIG. 14B is a view taken in the direction of arrow X in FIG.

15 is a diagram showing an operation position of a select plate for selecting a separation position of the disk holder of FIG. 1, and is a plan view particularly showing a selection position of a lowermost disk holder.

FIG. 16 is a plan view showing a selected position of the uppermost disk holder by the select plate of FIG. 15;

17 is a side view showing the operation of separating the disk holder by the select plate at the selected position in FIG. 15,
(A) shows the state before the disk holder is raised, and (B) shows the state after the disk holder is raised.

18 is a side view showing the operation of separating the disk holder by the select plate at the selected position in FIG. 16,
(A) shows the state before the disk holder is raised, and (B) shows the state after the disk holder is raised.

FIGS. 19A and 19B are plan views showing two examples of a specific shape of the disk holder of the present invention.

20A and 20B are diagrams showing a configuration around a disk passage portion of the stage unit in FIG. 1, wherein FIG. 20A is a plan view and FIG. 20B is a front view.

FIG. 21 is an explanatory diagram illustrating a detection operation at the time of disk loading in the stage unit of FIG. 20;

FIG. 22 is an explanatory diagram illustrating a detection operation at the time of disc ejection in the stage unit in FIG. 20;

FIG. 23 shows the stage unit of FIG.
FIG. 9 is an explanatory diagram illustrating an ejection operation when a disc is inserted from the center of the disc insertion slot.

FIG. 24 shows the stage unit of FIG.
FIG. 9 is an explanatory diagram illustrating an ejection operation when a disc is inserted from an end of a disc insertion slot.

FIGS. 25 (A) to (C) show the second operation position (FIG. 2, FIG. 6 to FIG. 8) when the stage power link of FIG. 2 to FIG. 8 is in the first operation position (FIG. 2, FIG. 6 to FIG. 8). 3, Fig. 4)
FIG. 21 is a side view showing a connected state of the horizontal drive gear mechanism (FIG. 20) in the case where the horizontal drive gear mechanism is in the third operation position (FIG. 5).

26 is a diagram showing a configuration of a disc loading / ejection mechanism in the stage unit of FIG. 1,
(A) is a plan view, and (B) and (C) are side views showing two states.

FIG. 27 is a view showing a configuration for horizontal movement of a drive base unit in the stage unit of FIG. 1;
(A) is a plan view and (B) is a side view.

28 is a diagram illustrating a configuration of a feed mechanism of a pickup unit in the drive base unit of FIG. 1,
(A) is a plan view, (B) is a front view, (C) is X in (A).
It is an arrow view.

29A and 29B are diagrams showing details of a main part of the feed mechanism of FIG. 28, wherein FIG. 29A is an enlarged plan view, FIG. 29B is an enlarged front view, and FIG.
FIG. 3 is a view taken in the direction of the arrow X in FIG.

30A and 30B are diagrams showing an initial state in which the load releasing mechanism of the disk hook is locked, in particular, of the configuration around the turntable unit of the drive base unit in FIG. 28, FIG. () Is a front view including a cross section of a main part.

31 is a view showing a state where the lock of the load release mechanism is released, following FIG. 30; FIG.
(B) is a front view including a cross section of a main part.

32 is a view showing a state where the load on the disk hook is released, following FIG. 31; FIG. 32 (A) is a plan view, FIG.
(B) is a front view including a cross section of a main part.

FIG. 33 (A) is a plan view showing a door open link at a shutter closing position as in FIGS. 2 and 4 to 8;
(B) is a front view showing the state of the shutter unit corresponding to (A).

34A is a plan view showing a door open link at a shutter open position as in FIG. 3, and FIG.
It is a front view showing the state of the shutter unit corresponding to (A).

FIGS. 35A and 35B are side views showing the slide plate of FIG. 1, and FIGS. 35A and 35B respectively correspond to the fixed position and the released position of the vibration isolating mechanism shown in FIGS.

36A and 36B are diagrams showing a fixed state of the vibration isolating mechanism configured between the damper unit and the mechanism of FIG. 1, wherein FIG. 36A is a plan view, and FIGS. It is explanatory drawing which respectively shows.

37A and 37B are diagrams illustrating a released state of the vibration isolating mechanism in FIG. 36, wherein FIG. 37A is a plan view, and FIGS. 37B and 37C are explanatory diagrams illustrating states of locking portions on both sides.

38 (A) and (B) are front views showing a fixed state and a released state of the vibration isolating mechanism of FIG. 36, respectively.

39 is a flowchart showing an outline of a series of operations up to the reproduction of a disk as the operation of the disk reproduction device of FIG. 1;

FIG. 40 is a flowchart showing an outline of a return operation after disk reproduction as an operation of the disk reproduction apparatus of FIG. 1;

FIG. 41 is a flowchart showing an outline of a disc ejection operation as an operation of the disc reproducing apparatus of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st motor 2 ... Gear mechanism 3 ... Mode plate, 3a ... shaft, 3b-3e, 3h ... Cam, 3f, 3g ... Press part 4,5 ... Lower select plate, 4a, 5a ... Guide groove, 4b, 5b ... Pin, 4c, 5c ... Claw, 5d ... Engagement groove 6 ... Door open link, 6a ... Shaft, 6b ... Pin, 6c
... Pressing part, 6d ... Spring 7 ... Eject arm, 7a ... Shaft, 7b ... Engaging part, 7c
... Spring 8 ... Power link for lifting and lowering, 8a ... Shaft, 8b ... Pin, 8c
... Link spring 9 ... Stage power link, 9a ... Shaft, 9b ... Pin, 9
c ... pressing part 10 ... lower chassis unit, 10a ... chassis 11 ... second motor 12 ... lifting gear mechanism, 12a ... gear train on the motor side, 1
2b: idler gear, 12c: gear train on the ascending / descending side of the stage unit, 12d: gear train on the ascending / descending side of the disc holder 13, 14: slide plate, 13a, 14a: step cam, 13b, 14b: groove cam, 13c, 14c: engagement Part 15: Link 16: Idler link, 16a: Shaft, 16b: Engagement part,
16c: Groove cam 17: Idler arm, 17a: Shaft, 17b: Pin 18, 19: Lock link, 18a, 19a: Shaft, 18
b, 19b: Pin, 18c, 19c: Engagement part 20: Upper chassis unit, 20a: Chassis 21: Disk holder, 21a: Projection, 21b: Disk hold spring 22: Disk holder elevating mechanism, 22a: Drive side gear train , 22b: large-diameter gear, 22c: small-diameter gear 23: disk holder screw, 23a: pinion 24, 25: upper select plate, 24a, 25
a: guide groove, 25b: pin, 25c: claw 30: stage unit, 30a: stage, 30b ...
Pin 31: Third motor 32: Gear mechanism for horizontal drive, 32a: Gear train on the motor side, 32b: Idler gear, 32c: Gear train on the drive screw side 33: Loading roller 34: Drive screw 35: Idler control plate, 35a ... Guide groove, 35b engaging portion, 35c groove cam, 35d spring, 35e pressing portion 36 stock arm, 36a shaft, 36b pressing portion 37 upper disk guide 38 lower disk guide, 38a support shaft , 38b ...
Spring, 38c: stopper, 38d: recess 39: disk passage, 39a: inlet, 39b, 39c ...
End line 40 ... Drive base unit, 40a ... Drive base 41 ... Fourth motor 42 ... Pickup drive gear mechanism, 42a ... Gear 43 ... Lead screw 44 ... Pickup unit, 44a ... Guide groove 45 ... Turn table 46 ... Spindle motor 47 ... Screw holder 48 ... Position spring 50 ... Shutter unit, 50a ... Front panel, 5
0b: insertion groove 51: disk insertion opening 52: shutter 53: door plate, 53a: guide groove, 53b: spring 54: door link, 54a: shaft, 54b: engaging portion, 54
c: Pin 60: Damper unit 61, 62: Damper plate, 61a, 61b, 62
a, 62b: lock portion 63: damper 64: damper spring 71: position detecting plate, 71a: shaft, 71b: slit 72: switch plate, 72a: shaft, 72b: pin,
72c spring 81-84 detection element 85 idler plate 85a shaft 85b pin 86 position plate 86a slit 91 screw holder 91a guide protrusion 91b
… Engaging projection, 91c… hemispherical projection 92… screw holder spring 93… plate spring 94… disk hook, 94a… disk hook sleeve, 94b… disk hook spring 95… release plate, 95a… engaging portion, 95b… load release Part, 95c: spring 96: cam gear, 96a: cam, 96b: engaging part 97: lock link, 97a: shaft, 97b: pin, 97
c: spring 98: lock plate, 98a: bent portion

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Momose F-term (reference) 5D072 AB22 AB23 BB39 BG05 BG07 BG10 EB15 EB18 5-35-2 Hakusan, Bunkyo-ku, Tokyo

Claims (4)

[Claims] 1. A disk loading apparatus comprising: a loading roller for transporting a disk; and a lower disk guide disposed below and facing the loading roller to guide the disk, wherein the loading roller always rotates at a fixed position. The lower disc guide is fixedly supported so that the lower disc guide is rotatable up and down, and is urged by a spring to a side that presses against the loading roller. 2. A disk according to claim 1, wherein a stopper is provided at a part of said lower disk guide for restricting an operation range of a side of said lower disk guide which is pressed against said loading roller. Loading device. 3. The disc loading device according to claim 1, wherein a recess for accommodating the loading roller is provided at a position of the lower disc guide facing the loading roller. 4. When the lower disc guide reaches a position closest to the loading roller by the urging force of the spring when the disc is not inserted,
4. The disc loading device according to claim 3, wherein the loading roller is configured to be able to run idle in the recess.