JP2698257B2 - Disc loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc loading apparatus for a compact disc or the like.

[0002]

2. Description of the Related Art A conventional compact disc loading apparatus is provided with a tray which is provided on a base so as to protrude forward and which conveys a disc, and a pickup and a turntable. Pivoted to
The sub-chassis includes a sub-chassis rotatable up and down, a sub-chassis lifting drive (9), and a tray drive.

The sub-chassis driving device causes the sub-chassis to stand by at a lowered position so as not to hinder the transfer of the tray while the tray is being slid. When the tray reaches the storage position, the turntable and the pickup face the tray opening. Rotate the tray to take it out.

[0004]

In the above-mentioned conventional loading device, the sub-chassis lifting / lowering drive device (9) is disposed on the side of the base, so that the width of the device is widened, which hinders downsizing. Had become.

According to the present invention, a loading device including a tray cannot have a width and a depth smaller than a diameter of a disc, and there is a limit to miniaturization. Paying attention to the fact that there is a little space on the base, and contriving to accommodate the sub-chassis lifting drive (9) and the tray slide drive (91) in this space, the width and depth can be reduced as much as possible. It identifies a loading device that can approach the diameter of the disc.

The present invention also discloses a means for automatically locking the tray by utilizing the movement of the sub-chassis lifting / lowering drive (9) when the tray is stored.

Further, according to the present invention, an auxiliary slide rod is interposed between the base and the tray to secure stability when the tray is pulled out, and the tray and the auxiliary slide rod are connected at the drawer end of the tray. When the tray is manually pushed in the storage direction by providing the auxiliary slide rod with a ball that can be engaged and disengaged between the tray and the slide rod, the tray and the slide rod always move together at the start of pushing, so that the tray storage operation is automatically performed. It is an object of the present invention to clarify a loading device capable of reliably operating a switch for operation.

According to a first aspect of the present invention, a tray (5) is provided so as to protrude forward on a base (1) and transports a disk;
A sub-chassis (3), which is provided with a pickup (23) and a turntable (26) and is pivotally supported by the back of the base (1) below the transition path of the tray and can rotate up and down, and a sub-chassis (3) While the tray 5 is being slid and the tray 5 is being slid, the sub-chassis 3 is kept at the lowered position so as not to hinder the transfer of the tray, and when the tray reaches the storage position, the sub-chassis 3 is rotated up and turned. Sub-chassis lifting drive (9) for exposing table (26) and pickup (23) to tray opening (51)
A disk loading device having a tray slide drive device (91);
In (9), a slider (7) is provided at the front of the base (1) so as to be slidable at right angles to the sliding direction of the tray (5), and the slider (7) has a cam groove (70) in the lateral direction. And a protruding shaft (33) protruding from the free end of the sub-sub-chassis (3) is slidably fitted in the cam groove (70), and a slide driving device (91) for the tray includes a base. Rack gear (55) formed in tray with tray drive gear (44) arranged in front of (1)
The driving source of the sub-chassis elevating drive device (9) and the tray slide drive device (91) is a common loading motor (13) provided at the front of the base (1). On the lower surface of 5), a notch (56) engaging with the slider (7) is opened at the storage position of the tray (5) corresponding to the transition end of the slider (7). The engagement of 7) locks the tray (5) in the storage position.

[0009]

According to a second aspect of the present invention, the auxiliary slide rods (6) (60) are slidable on the base (1) in the sliding direction of the tray (5).
Is provided, and the tray (5) is placed on the auxiliary slide rods (6) (60).
The auxiliary slide rod (6) is provided with a hole (61) which penetrates vertically and has a narrowed lower end, and a ball (62) is formed in the lower part of the lower surface of the auxiliary slide rod (6). From the ball, but does not fall, and hits the lower surface of the ball (62) on the base (1) corresponding to the withdrawal advance end of the auxiliary slide rod (6). A contact piece (19) is provided on the upper surface of the tray (5), and a receiving hole (54) in which the ball (62) fits at the lower end of the tray (5) is formed at the lower end of the tray (5), At the front end of the tray (5),
A front contact portion (58) is provided to abut the auxiliary slide rods (6) and (60) in the storage direction of (5) to push the auxiliary slide rods (6) and (60) in the storage direction. A detection switch (66) for detecting the full opening of the tray is provided corresponding to the forward transition end of.

[0011]

According to the first aspect of the present invention, the sub-chassis elevating drive unit (9) and the tray slide drive unit (91) are provided in the space in front of the base (1). The width of the device can be reduced as compared with a conventional loading device in which the devices are provided.

Even if there is a space at the front of the base (1), it is impossible to make the depth of the loading device smaller than the diameter of the disc, so the present invention makes effective use of this space. Even if the sub-chassis lifting / lowering drive device (9) and the tray slide drive device (91) are incorporated in the front part of the base, the depth does not become larger than that of the conventional loading device. Further, as the tray (5) moves in the storage direction, the slider (7) moves orthogonally to the movement direction of the tray (5), and at the storage slide end of the tray, a part of the slider (7) moves. The tray (5) fits into the notch (56) and locks the tray securely.
(5) can be prevented from being pulled out, and the mechanism can be prevented from being damaged. Since the slider (7) for driving the sub-chassis up and down is also used as the locking means for the tray (5), no special component is required for locking the tray (5).

[0013]

In the second invention, the ball (62) on the auxiliary slide rod (6) is provided at the drawer forward end of the tray (5).
When the tray (5) is lifted up by the contact piece (19) and fitted into the receiving hole (54) of the tray (5), and the tray (5) is manually pressed to the storage side, the tray (5) starts to be pushed out of the tray (5). 5) and the auxiliary slide rod (6) are retracted integrally. This allows the detection switch
(66) reliably detects the retreat of the auxiliary slide rod (6), activates the tray slide driving device (91), and automatically drives the tray in the storage direction. When the tray (5) is driven in the storage direction, the ball (62) comes off the contact piece (19) and
Only (5) moves in the storage direction. At this time tray (5)
Can move stably because it moves on the auxiliary slide rod (6). While the tray (5) is moving, the front contact portion (58) of the tray (5) pushes the auxiliary slide rod (6) and moves together in the storage direction.

[0015]

1 shows a tray slide drive (91) and a sub-chassis lift drive (9) at the front of a base (1).
FIG. 2 is an exploded view of the tray slide drive (91), the sub-chassis elevating drive (9), the base (1) and the sub-chassis (3), and FIG. 6) is an exploded perspective view of the base chassis (2), the pickup (23) and the turntable (26) attached to the base chassis (1), and FIG. 6 is a perspective view of the base (1) with the tray (5) removed.

A tray (5) for transporting a disc on a top surface of the base (1) via a pair of auxiliary slide rods (6) (60).
Are slidably provided.

A sub-chassis (3) is provided on the base (1) below the tray (5) so as to be rotatable, and its free end is oriented in the direction in which the tray (5) is pulled out.

On the sub-chassis (3), a pickup (23) and a turntable (26) are provided via a base chassis (2).

A tray slide driving device (91) and a sub-chassis lifting / lowering driving device (9) are provided at a front portion of the base (1).

The loading device according to the embodiment can handle two types of compact discs of 8 cm size and 12 cm size.

Hereinafter, each component will be described in detail.

As shown in FIG. 2, the base (1) is formed in a substantially rectangular frame shape, the horizontal length is substantially equal to the diameter of the large-diameter disk, and the depth is slightly larger than the diameter of the disk.

The front portion of the base (1) serves as a mounting portion (10) for a tray slide drive device (91) and a sub-chassis elevating drive device (9) to be described later over the entire length in the width direction. An opening (11) is provided behind the parentheses.

The sub-chassis (3) is formed in a substantially rectangular frame shape which fits into the opening (11) of the base (1) with a little extra space, and pivots outwardly projecting from both sides of the base end. (32) (32) is fitted to receiving portions (12) (12) formed on both sides of the back end of the opening of the base (1), and the pivot (3) is
It is arranged so that it can rotate around 2).

A protruding shaft (3) fitted in a cam groove (70) of a slider (7) described later in the center of the front part of the sub-chassis (3).
3) is protruded.

The base chassis (2) is attached to the opening (31) of the sub-chassis (3) via a cushion rubber (34) shown in FIG.

An opening (21) is provided in the base chassis (2), and a parallel guide shaft (22) provided in the opening.
A mounting table (24) is provided so as to be slidable back and forth over (22), a pickup (23) on the upper surface of the mounting table (24), and a rack gear (25) via a mounting piece (25a) on the side surface. Is attached.

Rack gear (25) and mounting piece (25a)
Are formed integrally by injection molding of resin, and the rack gear (25) is formed by the elasticity of resin as described later.
5) The final stage pinion gear (2) of the gear train (28) for driving
8a) to prevent backlash.

If necessary, rack gear (25) with a spring
To the pinion gear (28a).

A turntable (26) is provided on the front upper surface of the base chassis (2) and communicates with a spindle motor (27) mounted on the lower surface of the base chassis (2).

A sled motor (29) is mounted on the base chassis (2) close to the spindle motor (27), and a gear train (28) is continuously connected to the motor. The pinion gear (28a) at the end of the gear train (28) meshes with the rack gear (25), and thus the spindle motor (2).
The pickup (23) slides by the rotation of (7).

As shown in FIG. 6, guide portions (111) and (112) are formed on both sides of the upper surface of the base (1) in the front-rear direction.
An auxiliary slide rod (6) is attached to the guide portions (111) and (112).
(60) is slidably provided. Each slide rod is
The auxiliary slide rod (6) has a lower surface contact portion (63) and an upper surface contact portion (64) formed at a position approximately one-third the length from the front end of the base (1). ing.

A contact piece (19) projects upward from a front portion of the guide portion (111) of the base (1), and as shown in FIG. 13C, the auxiliary slide rod (6) is about ３ of the total length. When it slides forward in length, the lower surface contact portion (63) comes into contact with the contact piece (19).
No further advancement is prevented.

The auxiliary slide rod (6) has, at its forward end, a switch kicker (65) for operating a tray detection switch provided on the base (1).

The other auxiliary slide rod (60) and the base (1) are also provided with stoppers for restricting the slide amount of the auxiliary slide rod (60) to about 1/3 of the total length. Details are omitted.

A tray (5) is provided so as to straddle the two auxiliary slide rods (6) and (60) and to be slidable in the slide direction of the slide rod.

FIG. 10 is a diagram in which the tray (5) is turned upside down. The following description of the tray is a description of the tray shown in FIG. 6 in a correct orientation.

The tray (5) is formed to be substantially the same size as the base (1), and has two circular recesses (52) and (53) on which two types of large and small discs are placed slightly forward from the center. And an opening (5) through which the turntable (26) and the pickup (23) appear and disappear from the center toward the rear.
1) is provided.

As shown in FIG. 10, one auxiliary slide rod (6) is provided on the lower surface of the tray (5).
Are provided along the vertical wall plate (59), and a rack gear (55) for sliding drive is formed over the entire length of the wall plate.
The wall plate (59) is provided with a notch (56) for a tray lock to be described later on the front side.

As shown in FIG. 13C, the tray (5)
When the slide rod (6) (60) is slid forward about ト レ ー of the depth of the tray, the rear contact portion (57) formed at the rear end of the tray (5) becomes the auxiliary slide. The abutment on the upper surface contact portion (64) of the rod (6) prevents the advancement.

As described above, the depth of the base (1), the total length of the auxiliary slide rods (6) and (60), and the depth of the tray (5) are substantially equal to each other. The auxiliary slide rods (6) and (60) can project forward 1/3 of the depth length, and the tray (5) can project forward 2/3 of the depth length relative to the auxiliary slide rods (6) and (60). As a result, even if substantially the entire tray (5) projects forward from the base (1), the tray can be stably supported on the base (1) by the auxiliary slide rods (6) and (60). .

One of the auxiliary slide rods (6) has holes (6) vertically penetrating slightly forward of the lower surface contact portion (63).
1) is opened, and a ball (62) is provided in the hole so as to be vertically movable. The lower edge of the opening of the hole (61) is slightly narrowed to prevent the ball from falling. Usually, the lower portion of the ball is exposed from the hole, and the upper end of the ball is aligned with the upper surface of the slide rod (6).

The lower surface of the tray (5) is provided with a receiving hole (54) in which the ball (62) fits at the maximum advance position of the tray (5) with respect to the auxiliary slide rod (6).

Therefore, as shown in FIG. 13A, immediately before the tray (5) is fully opened, the ball (62) of the auxiliary slide rod (6) is used.
Is pressed upward by hitting the upper surface of the contact piece (19) on the base (1), and as shown in FIG. 13B, the upper part of the ball fits into the receiving hole (54) waiting at the position facing the ball. The tray (5) and the auxiliary slide rod (6) are integrated via the ball.

As shown in FIG. 13C, even when the tray is fully pulled out, the ball (62) does not come off the upper surface of the hitting piece (19).

When the tray (5) in the fully opened state is manually pushed in, the pushing starts with the tray (5) and the auxiliary slide rod (6).
When the ball (62) comes off the upper surface of the contact piece (19), the integration of the tray (5) and the auxiliary slide rod (6) is released.

As described above, the tray (5) and the auxiliary slide rod (6) are securely retracted integrally at the start of pushing the tray, so that the switch kick portion (65) of the auxiliary slide rod (6) is fully opened. Open (66) to automatically store the tray as described below.

At the front end of the tray (5), a front contact portion (58) is provided downward, and during the retreat of the tray (5), the front contact portion (58) is attached to the auxiliary slide rod (6) (6).
0), the auxiliary slide rods (6) and (60) can be retracted to their original positions on the base (1).

As shown in FIGS. 3 and 14, a bracket (8) is provided on the base (1) so as to cover the sub-chassis (3) and the base chassis (2). A through hole (82) is opened at a position facing the table (26).

A disk (83) for disc chuck is provided on the inner surface of the bracket (8), and a peripheral wall (84) protruding from the center of the disk is formed with a through hole (82) of the bracket (8).
The disc (83) is supported so as to be able to move up and down by mounting a retaining plate (86) from above.

The ring-shaped magnet (85) is housed in the peripheral wall (84) of the disk (83).

The turntable (26) is made of a magnetic material. When the turntable (26) rises with the elevation of the sub-chassis (3), the magnet (8)
The disk (83) presses the disk supported on the turntable (26) by pressing from above to chuck the disk by the suction force of 5).

Next, the sub-chassis elevating and lowering driving device (9) and the tray slide driving device will be described.

As shown in FIG. 2, the mounting portion (1) of the base (1) is
In (0), a sub-chassis elevating slider (7) is provided on the opening (11) side so as to be slidable horizontally in a direction perpendicular to the sliding direction of the tray (5).
Approaching the guide portion (111) of the tray drive gear (44)
And a control gear (4) for driving the slider (7) and the tray drive gear (44) is rotatably provided in a horizontal plane.
A loading motor (1) is provided on the lower surface of the mounting portion (10).
3) is mounted, and the motor shaft penetrating the mounting portion (10) is driven via a drive pulley (14), a belt (15), a driven pulley (16), and two reduction two-stage gears (17) and (18). It is continued to the control gear (4).

The slider (7) shown in FIG. 5 has a rack surface (74) formed on the right guide portion (111) side of the base (1) on the control gear (4) side. The tooth at the end is a protruding tooth (76) in which two teeth protrude, and three teeth from the protruding tooth (76) are missing teeth (75).

The tip of the prosthetic tooth (76) is missing the upper part compared to the other teeth.

A penetrating cam groove (70) is formed adjacent to the rack surface (74). The cam groove (70) has a stationary valley surface (72) on the rack surface (74) side and a stationary valley surface (7) on the opposite side.
1), and the valley surface (72) and the mountain surface (71) are continuous on the inclined surface (73).

The projecting shaft (33) of the sub-chassis (3) is slidably fitted in the cam groove (70), and the sliding of the slider (7) causes the sub-chassis (3) to pivot about its pivot (32). Rotate.

A switch kicking portion (77) is projected from the back surface of the slider (7). As shown in FIG. 11D, when the slider (7) reaches the transition end on the guide portion (111) side, the switch kicking portion (77) is formed. 77) closes the loading completion switch (78) provided on the base (1).

The height of the upper end of the slider (7) on the rack surface (74) side is lower than the transition path of the auxiliary slide rod (6), and the height of the vertical wall plate (59) on which the rack gear (55) of the tray is formed. Since the height is higher than the lower end height, when the slider (7) slides toward the auxiliary slide rod (6),
There is no hindrance to the movement of the auxiliary slide rod (6).

Also, just before the slider (7) reaches the transition end, the tip of the slider (7) on the rack surface (74) fits into the cut (56) of the vertical wall plate (59) of the tray (5). Timing is set.

FIG. 9 is a view in which the tray drive gear (44) is upside down, but the following description of the tray drive gear is in the correct orientation of the gear.

The tray drive gear (44) is formed in two stages, upper and lower, and the large-diameter gear (45) in the upper stage meshes with the rack gear (55) of the tray (5).

The lower small-diameter gear (46) is formed with a toothless portion (47) in which one lower half is missing two teeth at one location, and both sides of the toothless portion (47) have two teeth each. Protrusive teeth (48) (48) are formed between the roots of the teeth corresponding to the pitch circle diameter.

FIG. 7 is a perspective view of the control gear (4), FIG. 8 is a view in which the control gear (4) is turned upside down, and FIG. 15 is a development view of the control gear in FIG. The description of the gear (4) is in the direction of FIG.

The control gear (4) is located at the lower stage (4
a), a middle stage (4b), and an upper stage (4c). The lower stage is provided with a gear surface (43) meshing with the small-diameter gear (18a) of the reduction two-stage gear (18). Are formed.

The middle area (4b) is a control area of the slider (7), and this control area is composed of two upper and lower areas (411).
(412). In the lower area (411), the rack surface (7)
4) is formed with a slider driving gear surface (42a) meshing therewith, and a tooth (42b) having a length in which three teeth of the gear surface are adjacent to the gear surface (42a) in a clockwise direction. And the remaining area is a missing tooth portion (42d).

The tooth (42b) meshes with a toothless portion (75) between the rack surface (74) of the slider (7) and the tooth (76).

In the upper region (412) of the middle stage (4b), the slider drive gear surface (42a) of the lower region (411) extends in the length direction of the tooth tip, and the remaining portion is a true part corresponding to the tooth height. It is a circle (42c).

The upper section (4c) is a control area of the tray (5), and the control area is an upper and lower area (413) (41).
4), a tray drive gear surface (41a) is formed in a range of about 280 ° over the lower area (413) and the upper area (414), and the lower area (41) is formed in the remaining area.
3) is a perfect circle (41c) corresponding to the tooth tip, and the upper region (41)
4) is a missing tooth portion (41b).

The tray drive gear (44) meshes with the tray drive gear surface (41a), and the teeth (48) of the tray drive gear (44) prosper on the tray drive gear surface (41a). Low teeth (41d) are formed at predetermined intervals so as to fit.

The height of the round portion (41c) of the upper stage (4c) corresponds to the height of the lower toothless portion (47) of the tray drive gear (44).

Between the teeth (42b) of the middle stage (4b) of the control gear (4) and the missing teeth (41c) of the upper stage (4c),
It is about 30 degrees clockwise from the leading tooth (42b).

The operation of the loading device will be described below. (A) Loading operation of tray FIG. 13C shows a state where the tray (5) is loaded and unloaded from the player.

The tray full-open switch (65) is pushed by the switch kicking portion (65) of the auxiliary slide rod (6), and is in a makeup state.

At this time, the slider (7) is located at the left end, and the projecting shaft (33) of the sub-chassis (3) is fitted in the right stationary valley surface (72) of the cam groove (70). The chassis (3) is waiting at the lowered position.

Therefore, as shown in FIG. 14C, the base chassis (2) is also in a lowered state, and the chuck disc (8)
3) and the turntable (26) are separated.

Further, the pickup (23) stands by at a position closest to the turntable (26).

When the tray for loading the tray (5) is manually pushed in from the above state, the auxiliary slide rod (6) is pushed as described above.
Is separated from the tray full open detection switch (66), whereby the loading motor (13) is driven, and the driving pulley (14), the belt (15), and the driven pulley (1) are driven.
6) The control gear (4) is driven clockwise via the two reduction two-stage gears (17) and (18), and the tray drive gear (44) rotates counterclockwise in conjunction with this. The loading of the tray (5) is started.

The above operation can be performed by pressing a separately provided carry-in switch (not shown).

On the other hand, in the slider (7), the crest of the right end tooth of the standard tooth profile on the rack surface (74) is in contact with the perfect circle (42 c) of the middle stage (4 b) of the control gear (4). (7) keeps the position as it was moved to the left end.

As the tray (5) is carried in, the auxiliary slide rods (6) and (60) are pushed and stored by the front contact portion (58) on the front surface of the tray (5).

The loading of the tray (5) proceeds, and FIGS.
As shown in the figure, the middle tooth (4b) of the control gear (4)
2b) meshes with the toothless portion (75) of the slider (7), and drives the leading tooth (76) and thus the slider (7) to the right.

Then, when the slider (7) moves rightward, the inclined surface (73) of the cam groove (70) pushes up the protruding shaft (33) of the sub-chassis (3) and raises the sub-chassis (3). .

As shown in FIG. 11C, immediately after the slider (7) starts sliding, the toothless portion (41 b) and the perfect circle portion (41 c) of the upper stage (4 c) of the control gear (4) correspond to the tray drive gear (44). The teeth (46a) having a half tooth width and the roots on the left and right sides engage the leading teeth (48) (48) up to the pitch circle.

When the control gear (4) is further rotated clockwise, the left and right tooth bottoms of the tray drive gear (44) have two teeth (48) and (48) up to the pitch circle. The rotation of the tray drive gear (44) is prevented by coming into contact with the round portion (41c) of the control gear (4), so that the tray (5) is held in the stowed state. (B) Disc clamping operation When the clockwise rotation of the control gear (4) further proceeds from the above state, the switch kicker (77) of the slider (7) in FIG. 11D presses the loading completion switch (78). To detect the completion of loading.

During this time, the slider (7) further moves to the right, and as shown in FIG. 14A, the protrusion (3) of the sub-chassis (3)
3) is pushed up by the stationary mountain surface (71) of the cam groove (70). At this time, the turntable (26) and the magnet (85) mounted on the chuck disk (83) are attracted to the disk (FIG. (Not shown). With this operation, the raising of the base mechanism, that is, the chucking operation of the disk is completed.

At this time, as shown in FIG. 12, the slider (7)
The upper right edge of the tray (5) fits into a notch (56) formed in the vertical wall plate (59) of the tray (5) to lock the tray (5) and prevent the tray (5) from jumping out. (C) Disk Unloading Operation The disk is unloaded by the reverse procedure. That is, when the loading motor (13) is driven in the direction opposite to the direction in which the disc is loaded, the control gear (4) is driven counterclockwise, and in conjunction with this, the slider (7)
Is driven to the left to lower the sub-chassis (3) and thus the turntable (26). As a result, the chucking of the disc is released, and the disc is placed in the circular concave portion (52) or (53) of the tray (5). When the control gear (4) further rotates counterclockwise, the slider (7) is moved to the left end, and the crest of the right end tooth (74a) of the standard tooth shape of the rack surface (74) is moved to the control gear (4). (4b) in the middle (4b).

Immediately before this, the upper stage (4c) of the control gear (4)
Tray drive gear surface (41a) and tray drive gear (4
4) The small-diameter gear (46) meshes and the tray (5) is driven in the projecting direction.

When the tray (5) is driven in the protruding direction, and when the tray (5) is protruded to some extent, the upper contact portion (64) of the auxiliary slide rod (6) (60) is moved to the rear contact portion (57) of the tray (5).
And the auxiliary slide rods (6) and (60) are driven in the protruding direction.

As shown in FIG. 13A, immediately before the tray (5) projects maximally, the ball (62) provided in the auxiliary slide rod (6) hits the hitting piece (19) on the base (1). Receiving hole (54) lifted and provided on the back of tray (5)
And the auxiliary slide rod (6) and the tray (5) move forward integrally.

Next, the switch kicking portion (65) of the auxiliary slide rod (6) puts the tray fully open switch (66) into the make state, and the disk unloading operation is completed.

As described above, the sub-chassis lifting drive (9) and the tray slide drive (91) are provided in the front space of the base (1). The width of the device can be made smaller than that of the loading device.

Even if there is a space at the front of the base (1), the depth of the loading device cannot be made smaller than the diameter of the disk. Even if the sub-chassis elevating drive device (9) and the tray slide drive device are incorporated in the front part of the base, the depth does not become larger than that of the conventional loading device.

Further, the slider (7) moves orthogonally to the moving direction of the tray (5) with the retreating movement of the tray (5) in the storing direction, and the slider (7) moves at the storing slide end of the tray. Can be fitted into the notch (56) of the tray (5) to lock the tray, prevent the tray (5) from being pulled out during play, and prevent damage to the mechanism.

Further, the ball (62) on the auxiliary slide rod (6) fits into the receiving hole (54) of the tray (5) at the drawer forward end of the tray (5), and the tray (5) is moved toward the storage side. When the manual slide is pressed, the tray (5) and the auxiliary slide rod (6) are retracted integrally when the auxiliary slide rod (6) starts to be pressed, so that the detection switch (66) retreats the auxiliary slide rod (6). Is detected, the tray slide driving device is operated, and the tray can be automatically stored.

The present invention is not limited to the configuration of the above embodiment, and various modifications are possible within the scope of the claims.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a tray slide driving device and a sub-chassis elevating driving device are incorporated in a base.

FIG. 2 is an exploded view and a perspective view of a sub-chassis according to the first embodiment;

FIG. 3 is an exploded perspective view of a base chassis, a pickup, and a turntable.

FIG. 4 is a perspective view of the sub-chassis driving device as viewed from a rear oblique direction.

FIG. 5 is a perspective view of a slider.

FIG. 6 is an exploded perspective view of a base, an auxiliary slide rod, and a tray.

FIG. 7 is a perspective view of a control gear.

FIG. 8 is a perspective view in which a control gear is inverted.

FIG. 9 is a perspective view in which a tray driving gear is inverted.

FIG. 10 is a perspective view in which a tray is inverted.

FIG. 11 is an explanatory diagram of a relationship between rotation of a control gear and movement of a slider and a tray.

FIG. 12 is an explanatory view of a state where the slider is fitted into the notch of the tray and locked.

FIG. 13 is an explanatory view of drawing out a tray and an auxiliary slide rod, and locking and unlocking the two.

FIG. 14 is an explanatory diagram of the elevating operation of the sub-chassis.

FIG. 15 is a development view of a control gear.

[Explanation of symbols]

 (1) Base (23) Pickup (26) Turntable (3) Subchassis (4) Control gear (5) Tray (6) Auxiliary slide rod (7) Slider

Claims (2)

(57) [Claims] 1. A tray (5) which is provided on a base (1) so as to protrude forward and transports a disk, and comprises a pickup (23) and a turntable (26). Sub-chassis pivotally supported at the back of the base (1) and rotatable up and down
The sub-chassis is connected to (3) and the sub-chassis (3) so that the tray (5) does not hinder the transition of the tray while sliding.
(3) waits at the lowered position, and when the tray reaches the storage position, the sub-chassis (3) is rotated upward to turn the turntable (2).
6) and a sub-chassis elevating drive (9) for exposing the pickup (23) to the opening (51) of the tray, and a sub-chassis elevating drive (9) for loading a disk having a tray slide drive (91). 9) is provided with a slider (7) at the front of the base (1) so as to be slidable perpendicular to the sliding direction of the tray (5), and the slider (7) is provided with a cam groove (70) in the lateral direction. Open and the sub-sub-chassis
A projecting shaft (33) protruding from the free end of (3) is slidably fitted in the cam groove (70), and a tray slide driving device is provided.
(91) is a tray drive gear (44) arranged in front of the base (1).
The sub-chassis lifting drive (9) and the tray slide drive (91) are driven by a common loading provided at the front of the base (1). The motor (13) is provided with a notch (56) on the lower surface of the tray (5), which engages with the slider (7) at the storage position of the tray (5), corresponding to the transition end of the slider (7). And a disc loading device for locking the tray (5) in the storage position by engaging the slider (7) with the notch (56). 2. An auxiliary slide rod (6) (60) is provided on a base (1) so as to be slidable in a sliding direction of a tray (5).
A tray (5) is slidably mounted on the auxiliary slide rod (6) (60), and a hole (61) is formed in the auxiliary slide rod (6), which penetrates vertically and has a narrowed lower end. A ball (62) is fitted so that the lower part thereof protrudes from the lower surface of the auxiliary slide rod (6) but does not fall, and the base (1) is provided with a ball corresponding to the withdrawal end of the auxiliary slide rod (6). A contact piece (19) for contacting the lower surface of (62) with the ball and projecting to the upper surface of the auxiliary slide rod (6)
The lower surface of the tray (5) is provided with a receiving hole (54) in which the ball (62) is fitted at the drawing forward end of the tray (5), and the tray (5) is provided at the front end of the tray (5). 5) The auxiliary slide rod is brought into contact with the auxiliary slide rods (6) and (60) during storage.
(6) A front contact portion (58) for pushing the (60) in the storage direction is provided, and a detection switch (66) for detecting full opening of the tray is provided corresponding to the forward transition end of the auxiliary slide rod (6). Disc loading device.