JP2003109291A - Disk loading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk loading device in which the operating state of a tray and a play-back mechanism unit can be checked from the outside of the casing of a product incorporating the device. SOLUTION: The disk loading device has a first tray movable among a first attachment and detachment position, a first storing position and a first play-back position, and a second tray movable between a second attachment and detachment position, a second storing position and a second play-back position. The disk loading device is further provided with a first housing member to house the first tray at the first storing position, and a second housing member which is located at the lower part of the first housing member and houses the second tray at the second storing position. A cam gear to drive the first tray and the second tray is provided at the lower part of the second housing member, and a notched part is provided at the front part of the second housing member. A mark is provided at the position corresponding to the notched part of the cam gear in the state where the first tray is at the first storing position and the second tray is at the second play-back position.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a disc as an information recording medium such as an optical disc or a magneto-optical disc,
The present invention relates to a disc loading device for loading a disc reproducing device.

[0002]

2. Description of the Related Art Conventionally, with the spread of disks as information recording media such as optical disks and magneto-optical disks,
In order to easily handle a plurality of discs collectively, a disc loading device has been proposed which accommodates the plurality of discs at a time and selectively reproduces from the discs. Further, in this type of disc loading device, during reproduction or recording of a disc,
Other than that, it is important for convenience that a disc that is not related to reproduction or recording can be taken in and out or exchanged, and such a disc loading device has been demanded.

FIG. 30 is a basic operation diagram schematically showing the movement of the tray and the reproducing mechanism unit in an example of a conventional disc loading apparatus which satisfies such a demand. In this example, as shown in the figure, a plurality of trays (in this example, the upper tray 4 and the lower tray 5) on which the disks 9 can be placed are superposed at the storage position in the front part of the housing 1 of the apparatus. And then these trays are selectively placed at a position where the disc can be attached / detached outside the device (attachment / detachment position),
It is configured so as to be moved to and from a position (playback position) at which the disc inside the apparatus is played back.

Here, FIG. 1A shows a state in which the upper tray 4 is at the attaching / detaching position. Further, FIG.
It shows a state in which the upper tray 4 and the lower tray 5 are stacked and stored in the storage position. Further, FIG. 6C shows a state in which the lower tray 5 is at the reproduction position. Then, FIG. 7D shows a state where the disc 9 placed on the lower tray 5 is being reproduced.

In this disc loading device, regardless of which tray the disc 9 to be reproduced is placed, the reproducing mechanism unit 20 in the inner part of the housing 1 is moved up and down so that the target disc 9 is loaded. Play. The reproducing mechanism unit 20 includes a turntable 21 that rotates the disc 9, a pickup that reads information recorded on the disc 9, and a drive mechanism that moves the pickup in the radial direction of the disc 9.

Specifically, as shown in FIGS. 6C to 6D, a reproducing mechanism unit lifting mechanism (not shown) for moving the reproducing mechanism unit 20 in the vertical direction of the apparatus.
As a result, the reproducing mechanism unit 20, which is normally located below all the trays, rises, and in the process, the disk 9 placed on one tray (the lower tray 5 in this example) at the reproducing position is loaded. Pick up by the turntable 21.

When the reproducing mechanism unit 20 continues to rise, the disc 9 on the turntable 21 comes into contact with the disc retainer 8 mounted on the upper part of the housing 1, and a biasing force is applied toward the turntable 21. At this point, the playback mechanism unit lifting mechanism is stopped and the playback mechanism unit 2
0 means that the playback position has been reached. In the above state, if a drive mechanism for moving the tray from the storage position to the mounting / removing position is separately provided, another disk 9 can be exchanged during reproduction or recording of the disk 9.

[0008]

However, in the conventional disk loading device as described above, the drive mechanism portion for driving each tray and the reproducing mechanism unit elevating mechanism is located at the lower part of the tray storing portion, and the tray storing member is provided. Since it is covered with, etc., the operating state of this drive mechanism cannot be seen from the front of the device. In other words, the operating state of such a disc loading device is difficult to recognize from the outside, and it becomes difficult to confirm the operating state, for example, at the time of shipping when the device is incorporated in the product housing.

In view of such problems, the present invention makes it easy to recognize the operating states of the tray and the reproduction mechanism unit,
An object of the present invention is to provide a disc loading device capable of confirming an operation state from the outside of the housing of a product incorporating the device.

[0010]

In order to achieve the above object, according to the present invention, a first attaching / detaching position at which a disc can be attached / detached, a first storing position at which the disc is stored and waiting, and a disc can be reproduced. The first movable position with respect to the first reproduction position
A tray; a second loading / unloading position where the disc is removable; a second storage position where the disc is stored and waiting; and a second tray which is movable between a second playback position where the disc can be played back. A first storage member that stores the first tray at the first storage position and guides the movement of the first tray between the first attachment / detachment position and the first reproduction position; Located at the bottom of the storage member, the second
While storing the second tray in the storage position,
A disk loading device including a second storage member that guides the movement of the second tray between the second attachment / detachment position and the second reproduction position, and drives the first tray and the second tray. A cam gear is provided at a lower portion of the second storage member, a cutout portion is provided at a front portion of the second storage member, the first tray is at the first storage position, and the second tray is at the second reproduction position. In the state of 1), a mark is provided at a position corresponding to the cutout portion of the cam gear.

Further, the mark is visible from the outside through the cutout portion.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the outer appearance of a disc loading device according to an embodiment of the present invention. FIG. 2 is a perspective view showing the internal structure of the disc loading device according to this embodiment. As shown in these figures, the present disc loading device is provided with a casing 1, and in this casing 1, an upper tray storage portion 2, a lower tray storage portion 3, an upper tray 4, a lower tray 5, and a disc holder are held. 8 and the like are incorporated.

FIG. 3 is an exploded perspective view showing the structure of each part around the housing. As shown in the figure, on the left and right of the rear part of the housing 1, a tray guide 1k for restricting the vertical movement of the upper tray 4, a tray guide 1L for restricting the horizontal movement of the lower tray 5, and this tray guide 1L. And a tray guide 1d which is continuously provided and which tilts upward on the inner side of the apparatus and guides the lower tray 5 to incline. In addition, the reproducing mechanism unit 20, the motor 13 and the like are attached to the lower surface of the housing 1. Details will be described later.

FIG. 4 is a perspective view showing the structure of the lower tray storage portion. The lower tray storage portion 3 is attached to the front portion of the housing 1. As shown in the figure, in the lower tray housing portion 3, tray guides 3a for restricting the vertical movement of the lower tray 5 are provided so as to project inward from both left and right ends. Further, tray guides 3b for restricting the lateral movement of the lower tray 5 are provided so as to project above the vicinity of the left and right ends of the bottom surface.

FIG. 5 is a perspective view showing the structure of the upper tray storage portion. The upper tray storage section 2 is attached to the upper side of the lower tray storage section 3. As shown in the figure, in the upper tray storage portion 2, tray guides 2a for restricting the vertical movement of the upper tray 4 are provided so as to project inward from both left and right ends. Further, tray guides 2b for restricting the horizontal movement of the upper tray 4 are provided so as to project above the vicinity of the left and right ends of the bottom surface.

FIG. 6 is a plan view showing two types of disks mounted on the disk loading device according to the present embodiment. The figure (a) shows the large-diameter disk 9, and the figure (b) shows the small-diameter disk 10. The upper tray 4 is slidably mounted in the upper tray housing portion 2 in a substantially horizontal front-rear direction (direction of arrow A in FIG. 1) of the housing 1, and serves as a disc 9 or a disc 10 as an information recording medium.
Is conveyed between the disk mounting / demounting position outside the front of the housing 1 and the first tray disk reproducing position located at the back of the housing 1.

On the other hand, the lower tray 5 is slidably mounted in the lower tray accommodating portion 3 substantially parallel to the upper tray 4, and the disk 9 or 10 serving as an information recording medium is attached to the outside of the housing 1 in the front. And a tray holding position on the lower tray storage portion 3, and between the second tray disk playback position near the first tray disk playback position and the lower tray storage portion 3. Transport.

FIG. 7 is a perspective view showing the structure of the upper tray. As shown in the figure, the upper tray 4 has substantially circular recesses 4a and 4b having different diameters on its upper surface in a concentric manner. The recess 4a is formed so as to accommodate the large-diameter disk 9, and the recess 4b is formed so as to accommodate the small-diameter disk 10.

The upper tray 4 has a hole 4d at the center of the recess, and a hole 4e connected to the rear of the hole 4d. The hole 4d is the reproduction mechanism unit 2 shown in FIG.
The turntable 21 on the 0 is introduced, and the hole 4e also introduces the pickup 22 on the reproducing mechanism unit 20. Further, the upper tray 4 is provided with a positioning hole 4f at the inner right end of the recess 4b. This is at the playback position T3, as will be described later.
A positioning boss 7c integrally provided on the reproduction unit holder 7 is fitted therein.

Further, the upper tray 4 is provided with guide grooves 4g on both side surfaces along the moving direction, and guide grooves 4h on the lower surface side of both side edge portions along the moving direction. The guide groove 4g is provided in the upper tray storage portion 2 shown in FIG.
And guides the operation of the upper tray 4 by engaging with a tray guide 2a which is integrally provided in the tray. The guide groove 4h is provided on the tray guide 2 that is integrally provided in the upper tray storage portion 2.
Engage with b to guide the movement of the upper tray 4.

FIG. 8 is a perspective view showing the structure of the lower tray. As shown in the figure, the lower tray 5 has substantially circular recesses 5a and 5b having different diameters on its upper surface in a concentric manner. The recess 5a is formed so as to accommodate the large-diameter disk 9, and the recess 5b is formed so as to accommodate the small-diameter disk 10.

The lower tray 5 has a hole 5d at the center of the recess, and a hole 5e connected to the rear of the hole 5d. The hole 5d corresponds to the reproduction mechanism unit 2 shown in FIG.
The turntable 21 on the 0 is introduced, and the hole 5e also introduces the pickup 22 on the reproducing mechanism unit 20. Further, the lower tray 5 is provided with a positioning hole 5f at the inner right end of the recess 5b. This is at the playback position T6, as will be described later.
A positioning boss 7c integrally provided on the reproduction unit holder 7 is fitted therein.

Further, the lower tray 5 is provided with guide grooves 5g on both side surfaces along the moving direction, and with guide grooves 5h on the lower surface side of both side edge portions along the moving direction. The guide groove 5g is provided in the lower tray storage portion 3 shown in FIG.
And guides the operation of the lower tray 5 by engaging with a tray guide 3a which is integrally provided in the tray. The guide groove 5h is provided on the tray guide 3 which is integrally provided in the lower tray storage portion 3.
Engage with b to guide the movement of the lower tray 5.

In the following description, only the disk 9 will be used for the sake of convenience, unless the characteristics specific to either the disk 9 or the disk 10 are mentioned.

FIG. 9 is a basic operation diagram schematically showing the movement of the tray and the reproducing mechanism unit in the disc loading apparatus according to this embodiment. As shown in the figure,
In this apparatus, the upper tray 4 conveys the disc 9 to the loading / unloading position T1, the storage position T2, and the reproducing position T3, and the lower tray 5 transports the disc 9 to the loading / unloading position T4, the storage position T5.
And to the reproduction position T6.

The attachment / detachment position T1 shown in FIG.
This is a position where the disc 9 is attached to and detached from the upper tray 4 in front of the outside of. In the storage position T2 shown in FIG. 2B, the upper tray 4 is located in the front part of the apparatus.
At a position held by a disk holding mechanism described later. A reproduction position T3 shown in FIG. 3D is a position where the disc 9 on the upper tray 4 has been completely conveyed to a position where it can be reproduced by the reproduction mechanism unit 20 located on the inner side of the housing 1.

The attachment / detachment position T4 shown in FIG.
This is a position where the disc 9 is attached to and detached from the lower tray 5 at the outside front of In the storage position T5 shown in FIG. 6E, the lower tray 5 is located at the front part of the apparatus.
At a position held by a disk holding mechanism described later. A reproduction position T6 shown in FIG. 9A is a position where the disc 9 on the lower tray 5 has been completely conveyed to a position where it can be reproduced by the reproduction mechanism unit 20 located on the inner side of the housing 1.

As shown in FIG. 7, a rack 4c is formed on one side surface (left side when viewed from the front) of the upper tray 4 over substantially the entire length in the moving direction. Rack 4c
On the front side of the device, it meshes with a first tray drive gear 26, which will be described later, to move the upper tray 4 between the attachment / detachment position T1 and the storage position T2. Further, the rack 4c has a storage position T2.
And a reproduction position T3, the upper tray 4 is moved by meshing with a second tray drive gear 28 described later.

Further, as shown in FIG. 8, the lower tray 5
On one side surface (right side when viewed from the front), a rack 5c is formed over substantially the entire length in the moving direction. Rack 5c
Is a third tray drive gear 30 which will be described later on the front side of the apparatus.
Engages with the lower tray 5 to attach / detach the lower tray 5 to the storage position T4.
Move between 5 and. Further, the rack 5c meshes with a fourth tray drive gear 32 described later between the storage position T5 and the reproduction position T6 to move the upper tray 4.

By the way, as shown in FIG. 3, the rack portion 18 is provided at the lower front part of the rack member 18 for raising and lowering in the form of a vertical plate.
a is provided, which is fitted in a guide groove 1b provided near the center of the housing 1 and is slidably arranged in the lateral direction of the apparatus. The elevating rack member 18 is provided with slanted guide grooves 18b on the left and right.
This moves the reproduction mechanism unit 20 between the reproduction position P1 shown in FIG. 9A and the non-reproduction position P2 shown in FIG. 9C.

Further, the rear portion of the substantially flat plate-shaped reproducing mechanism unit 20 is screwed to the rear portion of the lower surface of the casing 1 through the anti-vibration rubbers 23 provided at the left and right ends of the reproducing mechanism unit 2,
A substantially box-shaped reproduction unit holder 7 is screwed to the front part of 0 through vibration-proof rubbers 23 (not shown) provided on the left and right ends thereof. On the front of the playback unit holder 7,
Left and right raising and lowering bosses 7a are respectively projected forward,
This is fitted in the guide groove 18b of the lifting rack member 18.

Rotation guide projections 7b are integrally provided on both side surfaces of the reproduction unit holder 7 so as to project to the respective sides, and the rotation guide groove is provided near the center of the housing 1. 1a is engaged. This guides the movement of the reproduction mechanism unit 20 between the reproduction position P1 and the non-reproduction position P2. Further, a positioning boss 7c is integrally provided on the upper surface of the reproduction unit holder 7 so as to project upward. This is for positioning the upper tray 4 at the reproduction position T3 or the lower tray 5 at the reproduction position T6.

Here, the basic operation of the disk loading apparatus will be outlined with reference to the basic operation diagram of FIG. First, the standby state is shown in FIG. In the standby state, the upper tray 4 is at the storage position T2,
The lower tray 5 is at the reproduction position T6, and the reproduction mechanism unit 20 is at the reproduction position P1. Next, when the disc is to be attached to or detached from the upper tray 4 from the standby state, the first tray drive gear 26 is driven to attach the disc to the upper tray 4 at the attachment / detachment position T as shown in FIG.
Move to 1. Here, the upper tray 4 on which the disk 9 is placed is driven by the first tray drive gear 26.
It is returned to the storage position T2.

When reproducing the disc 9 on the upper tray 4, the reproducing mechanism unit 20 first moves to the non-reproducing position from the state shown in FIG. 11B as shown in FIG. , The lower tray 5 becomes movable.
Then, as shown in FIG. 7D, the upper tray 4 is moved to the reproduction position T3 by driving the second tray drive gear 28, and the lower tray 5 is moved to the storage position by driving the fourth tray drive gear 32. Move to T5.

After that, as shown in FIG. 7E, the reproducing mechanism unit 20 moves to the reproducing position P1 and the disc 9 on the upper tray 4 is reproduced. Further, when the disk is attached to or detached from the lower tray 5, the lower tray 5 is moved to the attachment / detachment position T4 by driving the third tray drive gear 30, as shown in FIG. The above is the outline of the basic operation of the disc loading apparatus.

Next, the structure of each part of the driving force transmission mechanism will be described. This is a mechanism for transmitting a driving force from the motor serving as a drive source to the above-mentioned upper tray 4, lower tray 5, and reproducing mechanism unit 20. As shown in FIG. 3, a motor 13 serving as a drive source is mounted on the lower surface side near the center of the front part of the housing 1, and a pinion gear 14 is mounted on its rotation shaft.

FIG. 10 is a plan view showing the internal structure of the portion related to the tray and the reproducing mechanism unit in the disc loading apparatus. FIG. 11 is an exploded perspective view showing the structure of the portion related to the tray and the reproduction mechanism unit in the disc loading device. As shown in these drawings, the driving force of the motor 13 is transmitted from the pinion gear 14 to the drive cam 17 via the reduction gear mechanism of the intermediate gear 15 and the intermediate gear 16.

The drive cam 17 is a rotating body which is located in the lower part of the tray housing and is rotatably attached to the housing 1. Further, the motor 13, the rotating shaft portion of the intermediate gear 15, and the rotating shaft portion of the intermediate gear 16 are arranged inside the rotating shaft portion 1j of the drive cam 17.
A gear portion 17 a that meshes with the intermediate gear 16 is provided on the inner side surface of the drive cam 17, and the driving force is transmitted to the drive cam 17. Further, a gear is provided on the outer surface of the drive cam 17, an intermediate gear for moving the upper tray 4 and the lower tray 5, and an elevating rack member 1 for moving the reproducing mechanism unit 20 up and down.
The drive force is transmitted by meshing with an intermediate gear group that transmits the drive force to the drive gear 8. Details will be described later.

FIG. 12 is a diagram showing a structure of a portion related to the drive cam in the disc loading apparatus. The same figure (a) is a perspective view and the same figure (b) has shown the development view of an outer side gear part. In the figure, the center O of the drive cam 17
A certain azimuth (front side of the device in this case) viewed from 0 ° is set to 0 °, and the side surface is expanded to 360 °. The meshed state of each gear is shown.

As shown in the figure, a gear portion 17b is provided at the uppermost stage around the side surface of the drive cam 17. This meshes with the intermediate gear 25 and the intermediate gear 27 that transmit the driving force for driving the upper tray 4. The gear portion 17b includes a tooth portion 17b1 including a plurality of teeth that mesh with the gear portion 25a of the intermediate gear 25 and the gear portion 27a of the intermediate gear 27, and an arc-shaped toothless portion 17b2 having a diameter of the pitch circle of the tooth portion 17b1. And are configured as a gear group that is continuously provided.

On the side surface of the drive cam 17, the gear portion 1
A gear portion 17d is provided below the 7b. This meshes with the intermediate gear 29 and the intermediate gear 31 that transmit the driving force for driving the lower tray 5. The gear portion 17d includes a tooth portion 17d1 formed of a plurality of teeth that mesh with the gear portion 29a of the intermediate gear 29 and the gear portion 31a of the intermediate gear 31, and an arc-shaped toothless portion 17d2 having a diameter of the pitch circle of the tooth portion 17d1. And are configured as a gear group that is continuously provided.

On the side surface of the drive cam 17, the gear portion 17
A rotation holding portion 17c is provided between b and 17d. The rotation holding portion 17c has a large outer diameter.
1 and a separating portion 17c2 having a small outer diameter. In the present embodiment, the spacing portion 17c2 includes the toothless portion 17b2 of the gear portion 17b and the toothless portion 17 of the gear portion 17d.
It has the same diameter as d2.

By the way, the first tray drive gear 26 and the intermediate gear 25 are both intermediate transmission members rotatably arranged on the left front part of the housing 1. Similar to the intermediate gear 27 described later, the gear portion 25a of the intermediate gear 25 that meshes with the gear portion 17b of the drive cam 17 is provided with a plurality of teeth having a shape in which the tips of the teeth are cut off along the pitch circle diameter. The toothless portion 17b2 of the gear portion 17b described above is preset so as to hold the rotational position.

Further, the gear portion 2 of the first tray drive gear 26
6a meshes with the gear portion 25b of the intermediate gear 25, and the gear portion 26b meshes with the rack portion 4c provided on one side surface of the upper tray 4 to form the intermediate gear 2
The driving force of 5 is transmitted to the upper tray 4. As a result, the upper tray 4 is moved between the attachment / detachment position T1 and the storage position T2.

On the other hand, the second tray drive gear 28 and the intermediate gear 27 are both intermediate transmission members rotatably arranged in the left central portion of the housing 1. Here, FIG. 13 is a plan view showing a configuration of a portion related to the holding mechanism of the upper tray in the disc loading apparatus. As shown in FIG. 7A, the gear portion 27a of the intermediate gear 27 that meshes with the gear portion 17b of the drive cam 17 is provided with a plurality of teeth having a shape in which the tip portions of the teeth are cut off along the pitch circle diameter. The toothless portion 17b2 of the gear portion 17b described above is preset so as to hold the rotational position.

Further, as shown in FIG. 6B, the held portion 27c provided on the intermediate gear 27 and protruding in the radial direction is
It is configured to contact the holding portion 17c1 having a larger diameter than the toothless portion 17b2 and hold the rotational position. Also,
Although not shown here, the gear portion 28a of the second tray drive gear 28 meshes with the gear portion 27b of the intermediate gear 27, and the gear portion 28b meshes with the rack portion 4c provided on one side surface of the upper tray 4. As a result, the driving force of the intermediate gear 27 is transmitted to the upper tray 4. As a result, the upper tray 4 is moved between the storage position T2 and the reproduction position T3.

Further, both the third tray drive gear 30 and the intermediate gear 29 are intermediate transmission members rotatably arranged on the right front part of the housing 1. Similarly to the intermediate gear 31 described later, the gear portion 29a of the intermediate gear 29 that meshes with the gear portion 17d of the drive cam 17 is provided with a plurality of teeth having a shape in which the tips of the teeth are cut off along the pitch circle diameter. The toothless portion 17d2 of the gear portion 17d described above is preset to hold the rotational position.

The gear portion 3 of the third tray drive gear 30
0a meshes with the gear portion 29b of the intermediate gear 29, and the gear portion 30b meshes with the rack portion 5c provided on one side surface of the lower tray 5 to form the intermediate gear 2.
The driving force of 9 is transmitted to the lower tray 5. As a result, the lower tray 5 is moved between the attachment / detachment position T4 and the storage position T5.

On the other hand, both the fourth tray drive gear 32 and the intermediate gear 31 are intermediate transmission members rotatably arranged in the right central portion of the housing 1. Here, FIG. 14 is a plan view showing the configuration of a portion related to the holding mechanism of the lower tray in the disc loading apparatus. As shown in FIG. 3A, the gear portion 31a of the intermediate gear 31 that meshes with the gear portion 17d of the drive cam 17 is provided with a plurality of teeth having a shape in which the tips of the teeth are cut off along the pitch circle diameter. The toothless portion 17d2 of the gear portion 17d described above is preset to hold the rotational position.

Further, as shown in FIG. 6B, the held portion 31c provided on the intermediate gear 31 and protruding in the radial direction is
It is configured to contact the holding portion 17c1 having a diameter larger than that of the toothless portion 17d2 and hold the rotational position. Also,
The gear portion 32 a of the fourth tray drive gear 32 is the intermediate gear 3
1 is engaged with the gear portion 31b, and the gear portion 32b
Engages with a rack portion 5c provided on one side surface of the lower tray 5 to transmit the driving force of the intermediate gear 31 to the lower tray 5. As a result, the lower tray 5 is moved between the storage position T5 and the reproduction position T6.

FIG. 15 is a plan view showing a structure of a portion related to the lifting drive of the reproducing mechanism unit in the disc loading apparatus. As shown in FIG. 11, FIG. 11 and FIG. 12, a gear portion 17e is provided outside the drive cam 17 and below the gear portion 17d. This is the first to transmit the driving force for moving the reproduction mechanism unit 20.
It meshes with the reproduction unit drive gear 33. The gear portion 17e is the gear portion 3 of the first reproduction unit drive gear 33.
3a, a tooth portion 17e1 formed of a plurality of teeth that mesh with each other, and an arc-shaped toothless portion 17 having a diameter of a pitch circle of the tooth portion 17e1.
a gear group in which e2 and e2 are continuously provided, and a gear portion 33a.
It is composed of a gear separating portion 17e3 that does not contact with.

In addition, at the bottom of the side surface of the drive cam 17,
A gear portion 17f is provided. This meshes with the second reproduction unit drive gear 34 that transmits the drive force for moving the reproduction mechanism unit 20. Gear part 1
Reference numeral 7f denotes a tooth portion 17f1 formed on the outer surface of the drive cam 17 and having a plurality of teeth meshing with the gear portion 34a of the second reproduction unit drive gear 34, and an arc-shaped portion having a diameter of the pitch circle of the tooth portion 17f1. A gear group in which a toothless portion 17f2 is continuously provided, and a gear separating portion 1 that does not contact the gear portion 34a.
7f3.

The first reproduction unit drive gear 33 and the second reproduction unit drive gear 34 are intermediate transmission members rotatably attached to the housing 1, and the gear portion 33b of the first reproduction unit drive gear 33 is , And is arranged so as to mesh with the gear portion 34a of the second reproduction unit drive gear 34.

As shown in FIG. 15C, the gear portion 33a
When the drive force from the drive cam 17 is transmitted to the second reproduction unit drive gear 34 via the first reproduction unit drive gear 33, the gear portion 17f is separated from the gear part 17f. 17f3, which is set in advance so that the gear portion 17f and the gear portion 34a do not come into contact with each other. Further, as shown in FIG. 15B, when the gear portion 34a and the gear portion 17f mesh with each other and the drive force from the drive cam 17 is transmitted to the second reproduction unit drive gear 34, the gear portion 17e is a separating portion 17e3, which is preset so that the gear portion 17e and the gear portion 33a do not come into contact with each other.

FIG. 15A shows a state in which the rotational positions of the first reproduction unit drive gear 33 and the second reproduction unit drive gear 34 are held. Similar to the intermediate gear 27, the gear portion 33a is provided with a plurality of teeth having a shape in which the tip end portions of the teeth are cut off along the pitch circle diameter, and in the toothless portion 17e2 of the gear portion 17e described above. , Is preset to hold the rotational position. Further, similarly, the gear portion 33a is also provided with a plurality of teeth having a shape in which the tip end portions of the teeth are cut off along the pitch circle diameter, and the rotational position is maintained at the toothless portion 17f2 of the gear portion 17f described above. Is set in advance.

Gear portion 3 of second reproduction unit drive gear 34
4b is a rack portion 18 of the lifting rack member 18 described above.
The driving rack 17 is configured to mesh with a and the driving force from the driving cam 17 is passed through the second reproduction unit drive gear 34, or the first reproduction unit drive gear 33 and the second reproduction unit drive gear 34 to raise and lower the rack. It is transmitted to the member 18.

The specific operation of the apparatus will be described below in order. This disc loading device is shown in FIG.
As shown in (b), the upper tray 4 is normally at the storage position T2, the lower tray 5 is at the reproducing position T6, and the reproducing mechanism unit 20 is at the disk reproducing position P1 in the standby state.

In the storage position T2, the upper tray 4 is
It meshes with the first tray drive gear 26 and the second tray drive gear 28. The gear portion 25a of the intermediate gear 25 that meshes with the first tray drive gear 26 holds the rotational position by contact with the toothless portion 17b2 of the gear portion 17b provided on the outer peripheral portion of the drive cam 17. Second tray drive gear 2
The gear portion 27a of the intermediate gear 27 that meshes with the gear 8 is a toothless portion 17b of a gear portion 17b provided on the outer peripheral portion of the drive cam 17.
2 and the held portion 27c is the toothless portion 17
The rotation position of the intermediate gear 27 is held by coming into contact with the holding portion 17c1 having a diameter larger than b2. By holding the rotational positions of the intermediate gear 25 and the intermediate gear 27 as described above, the upper tray 4 is held at the storage position T2.

FIG. 16 is a side view showing the structure of a tray movement guide mechanism in the disc loading apparatus. As shown in FIGS. 8E to 8A, the lower tray 5 is moved between the storage position T5 and the reproduction position T6 by the drive of the fourth tray drive gear 32.
On the other hand, the upper tray 4 is moved between the reproduction position T3 and the storage position T2 by the drive of the second tray drive gear 28.

When the lower tray 5 is moved from the storage position T5 to the reproduction position T6, the lower tray 5 is restricted in vertical movement by a tray guide 3a provided in the lower tray storage unit 3 and is provided in the lower tray storage unit 3. The tray guide 3b and the tray guide 1L provided on the housing 1 move to the inner side of the apparatus while being restricted in the left-right direction.

The tray guide 1L is
It is connected to a tray guide 1d which is inclined toward the upper side of the apparatus. When the movement of the lower tray 5 progresses and its rear end reaches the tray guide 1d, the lower tray 5 moves further toward the inner side of the device according to the inclination of the tray guide 1d while the rear part of the lower tray 5 is inclined upward. To do. As a result, the lower tray 5 is located at the reproduction position T6, which is near the reproduction position T3 of the upper tray 4, as shown in FIG. 9B.

At the reproducing position T6, the lower tray 5 is
A positioning boss 7c integrally provided on the reproducing unit holder 7 at the disk reproducing position P1 is fitted and retained in a positioning hole 5f provided on the lower tray 5. Here, FIG. 17 is a plan view showing a configuration of a portion related to the drive cam in the disc loading apparatus. With the lower tray 5 in the playback position T6,
The rotational position of the drive cam 17 is, as shown in the figure, a state where the black circle portion is at the position on the front side of the apparatus indicated by Tp1. This state is hereinafter referred to as the Tp1 position. Other positions have the same name.

As described above, at the Tp1 position, the upper tray 4 is held at the storage position T2, and the lower tray 5 is held at the reproduction position T6. Since this position is a position that is robust against vibration and shock applied to the device, it is set to the normal state (home position) of the device and at the same time, as a transportation state to be located when the device is transported.

Generally, in the transportation of a mechanical device such as a disc loading device, a transportation state is set in advance so that the damage or the like is unlikely to occur due to the vibration or shock which is considered to be applied to the device in the transportation process. Keep it. However, such a disc loading device is installed inside the housing of the product, and in the confirmation stage at the time of shipping the product, it is determined whether the device is in the transportation state without energizing the product. It's difficult.

Therefore, in the present disc loading apparatus, even if the apparatus is attached to the product case, it is possible to easily determine whether or not the apparatus is in the shipping state, and the following measures are taken. First, as shown in FIG. 4, a cutout portion 3c for confirming the transportation position is provided on the device front surface side of the lower tray storage portion 3. Then, as shown in FIG. 12, on the drive cam 17, a transportation position confirmation convex portion 17L is provided at a position corresponding to the transportation position confirmation notch 3c in the transportation state. This is shown in Figure 1 above.
This is the part indicated by the black circle shown in 7. The cutout portion is not limited to the above, and a hole or a transparent portion may be used as long as the black circle can be visually recognized.

FIG. 29 is a diagram showing a structure of a portion related to a mechanism for confirming the transportation position. FIG. 1A is a front perspective view of the device, and FIG. 1B is a side sectional view of the device incorporated in a product housing. As shown in FIG. 3A, in the above-mentioned transportation state, the transportation position confirmation convex portion 17 is provided.
L can be visually recognized through the transport position confirmation notch 3c. As a result, as shown in FIG.
By simply changing the state of the CD door 24 attached to the product housing 19 from the closed state to the opened state manually, the arrow E
It is possible to observe the inside of the device as shown by, and it is possible to easily judge whether the device is in the transportation state. in this case,
It is not necessary to energize the product to operate the device.

18 to 23 are plan views showing the rotational position of the drive cam and the positions of the trays, the rack members for raising and lowering, etc. in the disk loading apparatus. See also FIG.
4 to 28 are plan views showing the rotational position of the drive cam, the positional relationship of each tray, the lifting rack member, and the like, and the meshing state of each part gear in the present disk loading device. Each figure (a) here is a general view, (b), (c),
(D) is a detailed view of B part, C part, and D part, respectively.

Now, the position Tp1 is shown in FIG. 9 (b).
In order to change the state of the disc on the upper tray 4 from the state of FIG. 19, the drive cam 17 is rotated from the position Tp1 shown in FIG.
Rotate clockwise to position 2. At this time, as shown in FIG. 24, the tooth portion 17b1 of the gear portion 17b provided on the drive cam 17 and the gear portion 25a of the intermediate gear 25 mesh with each other, and the intermediate gear 25 is rotationally driven.

The gear portion 25b of the intermediate gear 25 and the gear portion 26a of the first tray drive gear 26 mesh with each other, and the gear portion 26b of the first tray drive gear 26 and the rack 4c provided on the side surface of the upper tray. By meshing,
The upper tray 4 is driven. When the drive cam 17 reaches the Tp2 position, the upper tray 4 becomes the attachment / detachment position T1 shown in FIGS. 9A and 18, and the disc can be replaced. Further, the upper tray 4 can be moved from the attachment / detachment position T1 to the storage position T2 by the procedure reverse to the above.

During this time, the gear portion 17d provided on the drive cam 17 and meshing with the intermediate gear 31 is a toothless portion 17d2, and the lower tray 5 is held at the disc reproducing position T6. At the same time, as shown in FIG. 15A, the gear portion 17e meshing with the gear portion 33a of the first reproduction unit drive gear 33 is a toothless portion 17e2,
The gear portion 17f that meshes with the gear portion 34a of the second reproduction unit drive gear 34 is a toothless portion 17f2,
The reproduction mechanism unit 20 is held at the reproduction position P1.

Next, the case where the upper tray 4 is moved to the reproducing position from the state shown in FIGS. 9B and 19 will be described. First, the drive cam 17 is Tp1 shown in FIG.
The state during the counterclockwise rotation from the position to the Tp3 position will be described. Here, as shown in FIG. 15B, the gear portion 34a of the second reproduction unit drive gear 34 and the tooth portion 17f1 of the gear portion 17f provided on the drive cam 17 mesh with each other, and the gear portion 34b moves up and down. Rack member 18
Rack member 18 for moving up and down
Is moved toward the right side of the device along the guide groove 1b of the housing 1. During this period, the gear portion 17e of the drive cam 17 that meshes with the first reproduction unit drive gear 33 is separated from the separation portion 17e.
3, the first reproduction unit drive gear 33 only rotates with the driving of the second reproduction unit drive gear 34.

As shown in FIG. 25, the upper tray 4 has the first tray drive gear 26 and the second tray drive gear 26 at the storage position T2.
It meshes with the tray drive gear 28. At this time, the first
Gear part 2 of intermediate gear 25 meshing with tray drive gear 26
5a is a gear portion 17 provided on the outer peripheral portion of the drive cam 17.
By maintaining contact with the toothless portion 17b2 of b,
Holds the rotation position.

The gear portion 27a of the intermediate gear 27 that meshes with the second tray drive gear 28 maintains contact with the tooth-missing portion 17b2 of the gear portion 17b provided on the outer peripheral portion of the drive cam 17, and holds it. The portion 27c is the toothless portion 17b2.
The rotation position of the intermediate gear 27 is held by maintaining contact with the holding portion 17c1 having a larger diameter. As a result, the upper tray 4 is held at the storage position T2.

Further, the lower tray 5 meshes with the fourth tray drive gear 32 at the reproduction position T6. Fourth
Gear part 3 of intermediate gear 31 meshing with tray drive gear 32
1a is a gear portion 17 provided on the outer peripheral portion of the drive cam 17.
By maintaining contact with the toothless portion 17d2 of d,
Holds the rotation position. As a result, the lower tray 5 is held at the reproduction position T6.

When the elevating rack member 18 moves to the right side of the apparatus, the reproducing unit holder 7 and the reproducing mechanism unit 20 are provided in the housing 1 because the guide groove 18b and the elevating boss 7a are engaged with each other. Rotation guide groove 1a
According to the guide of, it rotates to the lower part of the device. As the playback unit holder 7 rotates downward, the positioning boss 7c integrally provided on the playback unit holder 7 comes out of the positioning hole 5f of the lower tray 5, so that the lower tray 5 becomes movable. Then, when the rotational position of the drive cam 17 reaches Tp3, the reproducing mechanism unit 20 is in the non-reproducing position P2 shown in FIG. 7C. The positional relationship between the lifting rack member 18 and the upper tray 4 and the lower tray 5 at this time is as shown in FIG.

Subsequently, the drive cam 17 is turned to the T shown in FIG.
The state during the counterclockwise rotation from the p3 position to the Tp4 position will be described. Here, as shown in FIG. 26, the gear portion 27a of the intermediate gear 27 and the tooth portion 17b1 of the gear portion 17b provided on the drive cam 17 mesh with each other to move the upper tray 4 through the second tray drive gear 28. The storage position T2 is moved to the reproduction position T3. In addition, the gear portion 31 a of the intermediate gear 31 and the gear portion 17 d provided on the drive cam 17
Tooth portion 17d1 of the fourth tray drive gear 3
The lower tray 5 is moved from the reproduction position T6 to the storage position T5 via 2.

Here, the movement operation of both trays will be described with reference to FIG. The position of both trays at the Tp3 position is shown in FIG. From this state,
The upper tray 4 includes a guide groove 4g on both side surfaces and a tray guide 2a provided on the upper tray housing portion 2, and a guide groove 4h on the lower surface portion and a tray guide 2b provided on the upper tray housing portion 2. Is guided by the engagement of and moves to the inner part of the device substantially parallel to the upper surface or the lower surface of the device.
On the other hand, as shown in FIG. 2B, the lower tray 5 has its rear end portion on the lower surface guided by an inclined tray guide 1d provided on the rear portion of the housing 1 and moves toward the front side of the apparatus. , Substantially parallel to the upper tray 4.

In the state shown in FIG. 7C, both trays are substantially parallel to each other, and the guides on the side surfaces of the upper tray 4 are guided by the tray guide 2a of the upper tray accommodating portion 2 and the casing. This is performed by the tray guide 1k provided in No. 1. On the other hand, in the lower tray 5, the guide grooves 5g on both side surfaces are engaged with the tray guides 3a provided in the lower tray housing portion 3, and the lower surface guide grooves 5h and the tray guides provided in the lower tray housing portion 3 are provided. It is guided by engagement with 3b.

Due to the function of each of the above-mentioned guides, both trays reach the state shown in FIG. 7E through the state shown in FIG. That is, when the rotational position of the drive cam 17 reaches Tp4, as shown in FIGS.
Is in the reproduction position T3, and the lower tray 5 is in the storage position T5. During this time,
Drive cam 17 meshing with the second reproduction unit drive gear 34
The gear 17f has a toothless portion 17f2, and the reproducing mechanism unit 20 is held at the non-reproducing position P2.

Further, the drive cam 17 has the T shown in FIG.
The state during the counterclockwise rotation from the p4 position to the Tp5 position is shown. Here, as shown in FIG. 15C, the gear portion 33a of the first reproduction unit drive gear 33,
Tooth portion 17e1 of gear portion 17e provided on drive cam 17
The gear portion 33b and the gear portion 34a of the second reproduction unit drive gear 34 mesh with each other and rotate and drive.

Here, the second reproducing unit drive gear 34
Indicates that the drive cam 17 is rotated in the opposite direction to the case where the drive cam 17 is rotated from the Tp1 position to the Tp3 position, and the lift rack member 18 is moved to the left side of the device along the guide groove 1b of the housing 1. And move. During this period, the gear portion 17f of the drive cam 17 that meshes with the second reproduction unit drive gear 34
Is the separating portion 17f3, and the second reproduction unit drive gear 34 only transmits the drive force to the lifting rack member 18 in accordance with the rotation of the first reproduction unit drive gear 33.

As shown in FIG. 27, the upper tray 4 meshes with the second tray drive gear 28 at the reproduction position T3. At this time, the gear portion 27a of the intermediate gear 27 that meshes with the second tray drive gear 28 maintains the contact with the toothless portion 17b2 of the gear portion 17b provided on the outer peripheral portion of the drive cam 17, thereby changing the rotational position. keeping. As a result, the upper tray 4 is held at the reproduction position T3.

Further, the lower tray 5 meshes with the third tray drive gear 30 and the fourth tray drive gear 32 at the storage position T5. The gear portion 29a of the intermediate gear 29 that meshes with the third tray drive gear 30 maintains the rotational position by maintaining contact with the toothless portion 17d2 of the gear portion 17d provided on the outer peripheral portion of the drive cam 17. There is.
The gear portion 31a of the intermediate gear 31 that meshes with the fourth tray drive gear 32 maintains contact with the toothless portion 17d2 of the gear portion 17d provided on the outer peripheral portion of the drive cam 17, and
The held portion 31c holds the rotational position of the intermediate gear 31 by maintaining contact with the holding portion 17c1 having a larger diameter than the toothless portion 17d2. As a result, the lower tray 5 is held at the storage position T5.

When the raising / lowering rack member 18 moves to the left side of the apparatus, the reproducing unit holder 7 and the reproducing mechanism unit 20 are provided in the housing 1 because the guide groove 18b is engaged with the raising / lowering boss 7a. Rotation guide groove 1a
According to the guide of, it rotates to the upper side of the device. As the playback unit holder 7 rotates upward, the positioning boss 7c integrally provided on the playback unit holder 7 fits into the positioning hole 4 of the upper tray 4, and the upper tray 4 is held at the playback position T3. It Then, when the rotational position of the drive cam 17 reaches Tp5, the reproducing mechanism unit 20 is in the state of the reproducing position P1 shown in FIG. 9E, and the disc 9 placed on the upper tray 4 can be reproduced. Becomes
The positional relationship between the lifting rack member 18 and the upper tray 4 and the lower tray 5 at this time is as shown in FIG.

When the disc on the lower tray 5 is to be replaced from the above state, the drive cam 17 is rotated to move the drive cam 17 from the position Tp5 to Tp6 shown in FIG.
Rotate counterclockwise to position. At this time, as shown in FIG. 28, the tooth portion 17d1 of the gear portion 17d provided on the drive cam 17 and the gear portion 29a of the intermediate gear 29 mesh with each other, and the intermediate gear 29 is rotationally driven.

Then, the gear portion 29b of the intermediate gear 29 meshes with the gear portion 30a of the third tray drive gear 30, and the gear portion 30b of the third tray drive gear 30 and the rack 5c provided on the side surface of the lower tray 5 are connected. The lower tray 5 is driven by the meshing of. Drive cam 17 is Tp6
When it reaches the position, the lower tray 5 is shown in FIGS.
The attachment / detachment position T4 indicated by 3 is reached, and the disc can be exchanged. Further, the lower tray 5 can be moved from the attachment / detachment position T4 to the storage position T5 by the procedure reverse to the above.

During this time, the gear portion 17b provided on the drive cam 17 and meshing with the intermediate gear 27 is a toothless portion 17b2, and the upper tray 4 is held at the disc reproducing position T3. Along with this, the gear portion 17e that meshes with the gear portion 33a of the first reproduction unit drive gear 33 is a toothless portion 17e2, and the gear portion 17f that meshes with the gear portion 34a of the second reproduction unit drive gear 34 has a gap. The tooth portion 17f2 is formed, and the reproducing mechanism unit 20 is held at the reproducing position P1.

As described above, in the present disc loading device, the device is mounted by providing the transport position confirming hole in the lower tray accommodating portion and the transport position confirming convex portion as the mark on the drive cam. It is configured so that it is possible to easily confirm whether or not the device is in a transportation state even from the outside of the product housing. This allows
It is possible to prevent damage to the device during transportation of goods.

The cam gear described in claim 1 corresponds to the drive cam 17 in the embodiment, and the mark corresponds to the transportation position confirmation convex portion 17c.

[0090]

As described above, according to the present invention,
It is possible to provide a disc loading device in which the operating states of the tray and the reproducing mechanism unit can be easily recognized and the operating states can be confirmed from the outside of the housing of a product incorporating the device.

Specifically, a first removable position at which the disc is removable, a first storage position at which the disc is stored and waiting, and a first playback position at which the disc is reproducible are movable. A second movable position between the tray, a second loading / unloading position at which the disc can be loaded / unloaded, a second storage position at which the disc is stored and waiting, and a second playback position at which the disc can be played back.
And a first tray in the first storage position.
The tray is stored, and the
A first storage member that guides the movement of the first tray up to the reproduction position, and a second storage position that is located below the first storage member and that stores the second tray at the second storage position. In a disc loading device including a second storage member that guides the movement of the second tray from the attachment / detachment position to the second reproduction position, a cam gear for driving the first tray and the second tray is provided. It is provided in the lower portion of the second storage member, a notch is provided in the front portion of the second storage member, the first tray is in the first storage position, and the second tray is in the second reproduction position. In this state, a mark is provided at a position corresponding to the cutout portion of the cam gear.

Further, the mark is configured to be visible from the outside through the cutout portion.

As a result, it is possible to easily visually confirm that the device is in the transportation state, and it is possible to confirm the operation state from the outside of the housing of the product incorporating the device. Therefore, it is possible to easily confirm whether or not the device is in a robust state suitable for transportation at the shipping stage of the product, and it is possible to prevent damage to the device during transportation of the product.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outer appearance of a disc loading device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the internal structure of the disc loading device.

FIG. 3 is an exploded perspective view showing the structure of each part around the housing.

FIG. 4 is a perspective view showing a structure of a lower tray storage portion.

FIG. 5 is a perspective view showing a structure of an upper tray storage section.

FIG. 6 is a plan view showing two types of discs mounted on the apparatus.

FIG. 7 is a perspective view showing a structure of an upper tray.

FIG. 8 is a perspective view showing the structure of a lower tray.

FIG. 9 is a basic operation diagram schematically showing movement of a tray and a reproduction mechanism unit.

FIG. 10 is a diagram showing an internal configuration of a portion related to a tray and a reproduction mechanism unit.

FIG. 11 is an exploded view showing a structure of a portion related to a tray and a reproduction mechanism unit.

FIG. 12 is a diagram showing a configuration of a portion related to a drive cam.

FIG. 13 is a plan view showing a configuration of a portion related to a holding mechanism of an upper tray.

FIG. 14 is a plan view showing a configuration of a portion related to a holding mechanism of a lower tray.

FIG. 15 is a diagram showing a configuration of a portion related to lifting and lowering drive of a reproduction mechanism unit.

FIG. 16 is a side view showing the configuration of a tray movement guide mechanism.

FIG. 17 is a plan view showing a configuration of a portion related to a drive cam.

FIG. 18 is a plan view showing the rotational position of the drive cam and the positions of each tray, the lifting rack member, and the like.

FIG. 19 is a plan view showing the rotational position of the drive cam and the positions of each tray, the lifting rack member, and the like.

FIG. 20 is a plan view showing the rotational position of the drive cam and the positions of each tray, the lifting rack member, and the like.

FIG. 21 is a plan view showing the rotational position of the drive cam and the positions of each tray, the lifting rack member, and the like.

FIG. 22 is a plan view showing the rotational position of the drive cam and the positions of each tray, the lifting rack member, and the like.

FIG. 23 is a plan view showing the rotational position of the drive cam and the positions of each tray, the lifting rack member, and the like.

FIG. 24 is a plan view showing the rotational position of the drive cam, the positional relationship between each tray, the lifting rack member and the like, and the meshing state of each part gear.

FIG. 25 is a plan view showing the rotational position of the drive cam, the positional relationship between each tray and the lifting rack member, and the meshing state of each gear.

FIG. 26 is a plan view showing the rotational position of the drive cam, the positional relationship between each tray, the lifting rack member, and the meshing state of each gear.

FIG. 27 is a plan view showing the rotational position of the drive cam, the positional relationship between each tray, the lifting rack member, and the meshing state of the gears.

FIG. 28 is a plan view showing the rotational position of the drive cam, the positional relationship between the trays, the lifting rack member, and the like, and the meshing state of the gears.

FIG. 29 is a diagram showing a configuration of a portion related to a transportation position confirmation mechanism.

FIG. 30 is a basic operation diagram schematically showing movement of a tray and a reproduction mechanism unit in an example of a conventional disc loading device.

[Explanation of symbols]

1 case 2 Upper tray storage 3 Lower tray storage 4 Upper tray 5 Lower tray 7 Playback unit holder 8 disk holder 9,10 disks 13 motor 14 pinion gear 15 Intermediate gear 16 intermediate gear 17 Drive cam 18 Lifting rack member 20 Playback mechanism unit 21 turntable 22 pickup 23 Anti-vibration rubber 25, 27, 29, 31 Intermediate gear 26 First tray drive gear 28 Second tray drive gear 30 Third tray drive gear 32 4th tray drive gear 33 First reproduction unit drive gear 34 Second reproduction unit drive gear

Continued front page    (72) Inventor Yoshifusa Fujioka             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Inside the company (72) Inventor Hironobu Shimomura             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Inside the company F term (reference) 5D072 AB23 AB25 BE03 BG02 BH05                       BH11 EB04

Claims (2)

[Claims] 1. A first attachment / detachment position at which a disc is attachable / detachable,
A first tray that can move between a first storage position where the disc is stored and waiting, and a first reproduction position where the disc can be reproduced, a second attachment / detachment position where the disc can be attached / detached, and a disc is stored. A second tray that is movable between a second storage position that stands by and a second reproduction position that allows the disc to be reproduced, and the first tray is stored at the first storage position; A first storage member that guides the movement of the first tray between the first attachment / detachment position and the first reproduction position, and a second tray that is located below the first storage member and that is located at the second storage position. A disk loading device comprising: a second storage member that stores the second tray and guides the movement of the second tray from the second attachment / detachment position to the second reproduction position. Drive the tray A cam gear is provided in the lower portion of the second storage member, a cutout portion is provided in the front portion of the second storage member, the first tray is in the first storage position, and the second tray is the second reproduction member. A disc loading apparatus, wherein a mark is provided at a position corresponding to the cutout portion of the cam gear in the position. 2. The disc loading device according to claim 1, wherein the mark is visible from the outside through the cutout portion.