JP2003217210A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily perform an operation for manually unloading a disk tray. <P>SOLUTION: A disk device 1 is provided with an opening portion 40b located at the left side 40a of a chassis 40 and used for manually operating a loading mechanism 50. A slide cam 51 has a rack 51b engaging with a gear 63 for driving the disk tray. Sliding the slide cam 51 in the right direction (X<SB>2</SB>direction) with pressing force F2 by inserting a tool or the like formed in a wide- width plate shape from the opening portion 40b at the left side 40a releases locking to the disk tray to allow the disk tray to move by a prescribed distance in the injection direction (Y2 direction). The result directly draws out the disk tray in the injection direction (the Y2 direction). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc device, and more particularly, to an improvement of a disc device configured to move a disc tray to mount or replace a disc.

[0002]

2. Description of the Related Art CD players, CD-ROM drives,
A disc device such as a CD-R drive or a DVD drive is a device for recording or reproducing a disc-shaped recording medium (hereinafter referred to as “disc”) such as a compact disc or a CD-ROM.

The disc device moves a disc tray on which a disc is placed between a disc recording / reproducing position for recording or reproducing and a disc attaching / detaching position for exchanging the disc. The disc tray is configured to be moved to a disc recording / reproducing position or a disc mounting / removing position when the rotational driving force of the motor is transmitted via a transmission mechanism including a rack and pinion. Then, the disc is placed on the disc tray pulled out to the disc attaching / detaching position by the motor drive, and after the disc is placed, the disc tray is carried to the disc recording / reproducing position.

At this time, the disc is clamped between the turntable and the disc clamper by the raising operation of the lifting base on which the pickup and the turntable are mounted. Then, when an operation such as recording or reproduction is performed, the spindle motor is started to rotationally drive the turntable, the rotation of the turntable rotates the disk, and recording or reproduction of the disk is performed by the pickup.

[0005]

However, in the tray type disk device configured as described above, when a power failure occurs with a disk mounted or the motor for driving the disk tray fails, The disc tray cannot be moved and the disc loaded inside the device cannot be ejected. for that reason,
The disc device is provided with a manual eject mechanism for ejecting the disc tray by manual operation.

In the conventional manual eject mechanism, a small hole is provided in the front surface of the apparatus, and a long rod such as a wire is inserted into this small hole to rotate the gear of the internal tray drive mechanism to slightly move the disc tray. Each of them is configured to move in the eject direction.

However, conventionally, there is a problem that the hole for ejecting operation is extremely small due to the manual operation from the front surface of the apparatus, which makes it difficult to operate.

In particular, when the disc tray is ejected while the motor cannot be driven during the assembling work of the disc device, it is difficult to operate and it takes time to move the disc tray to the mounting / removing position.

Therefore, an object of the present invention is to provide a disk device which solves the above problems.

[0010]

In order to solve the above problems, the present invention has the following features. The invention according to claim 1 has a disc mounting portion on which a disc is mounted, and is movably supported between a disc recording / reproducing position for recording or reproducing and a disc attaching / detaching position for exchanging the disc. A disc tray, a pickup that faces the disc placed on the disc mounting portion when the disc tray moves to the disc playback position, an elevating base to which the pickup is attached and which moves up and down according to the movement position of the disc tray, A disk device including: a slide member that is slidably supported by engaging an end portion of an elevating base; and a drive mechanism that slides the sliding member to elevate the elevating base and move a disk tray. , The disc tray is ejected by manually sliding the slide member from a direction other than the front of the disc device body. Equipped with an eject mechanism, it can be operated from a direction other than the front of the device when manually pulling out the disc tray, so not only the troublesome operation of passing a wire through a small hole as in the past is not necessary, but it can be operated. It is possible to move the disc tray to the disc attachment / detachment position by manual operation from an easy direction.

According to the second aspect of the present invention, the eject mechanism slides the slide member by the pressing operation from the side surface of the disk device body to eject the disk tray, and the slide member is operated from the side of the device. It is possible to easily move the disc tray to the disc attaching / detaching position by pressing.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the disc tray of the present invention,
And, a preferred embodiment of a disk device using the same will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view of a disc device with a disc tray in a disc reproducing position according to the present invention.
FIG. 2 is a plan view of the disc device in which the disc tray is at the disc loading / unloading position.

As shown in FIGS. 1 and 2, the disc device 1 is a device such as a CD-ROM drive or a CD-R / RW drive for reproducing or recording / reproducing an optical disc at least, and comprises a device body 2 and It is composed of a disc tray 70 that conveys an optical disc (not shown) to the apparatus main body 2.

The apparatus main body 2 is formed of a hard resin or the like, has a chassis 40 having a loading mechanism 50 for moving the mechanism unit 42 in and out, and a mechanism 40 for loading and unloading the disc tray 70. A circuit board (not shown) on which (CPU) is installed,
And a mechanical unit 42 mounted on the chassis 40.
Further, the apparatus main body 2 may include a casing (not shown) that covers the components, and an opening (not shown) for loading / unloading the disc tray 70 (loading and unloading of the optical disc) is provided on the front surface of the casing. No)
Is provided.

3 and 4 are a plan view and a front view of the chassis 40, respectively. As shown in FIGS. 3 and 4, the chassis 40 has a substantially rectangular outer shape, and a metal plate defining the bottom surface of the chassis 40 is attached to the chassis 40. A wall portion is erected in a U-shape along the left and right edges and the rear edge of the bottom surface. No wall is formed on the front surface of the chassis 40, and the chassis 40 is in an open state.

In general, the chassis 40 is provided with a loading mechanism storing portion 41 for accommodating the loading mechanism 50 in the front portion and a left and right wall portion for movably supporting the disc tray 70. Left and right disc tray support surfaces 44, a mechanical unit mounting portion 45 for mounting the mechanical unit 42 behind the loading mechanism storing portion 41, and a disc installed above the mechanical unit mounting portion 45 and between the left and right wall portions. And a disk clamper storage portion 48 for mounting the clamper 80.

Further, the chassis 40 has projecting portions 43L and 43R which project from the left and right wall portions of the chassis 40 and regulate the displacement of the disc tray 70 in the upward direction (Z1 direction in FIG. 4). The left and right disc tray support surfaces 44 include a substantially horizontal same plane, and the disc tray support surface 44 is a guide for guiding the movement of the disc tray 70 and regulating the position in the left and right direction (X1 and X2 directions in FIG. 3). As a member, a guide protrusion 44a and a guide rib 44b,
44c is formed.

A detection mechanism 82 for detecting the operation of a slide cam 51, which will be described later, is provided on the disc tray support surface 44.
A rectangular hole 44d for allowing the detection knob 84 to project from below is provided. The detection mechanism 82 detects the operating position of the slide cam 51 and supplies the detection signal to a control circuit (not shown). Then, the control circuit which has received the detection signal from the detection mechanism 82 recognizes the position of the disc tray 70.

Further, as shown in FIG.
The front surface 40c of 0 has an opening 40d that opens to the front of the device.
Is provided. The opening 40d is provided at a position facing a gear 64 (see FIG. 3) of the loading mechanism 50 described later. Therefore, by inserting a slender wire or the like from the opening 40d and pressing the gear 64 with the pressing force F1 to rotate it counterclockwise, the locking with respect to the disk tray 70 is manually released from the front of the device, and the disk tray 70 is released. The tray 70 can be pulled out. The opening 40d of the chassis 40 and the gear 64 constitute a first manual eject mechanism 46A.

FIG. 5 is a left side view of the chassis 40. FIG. 6 is a plan view of the loading mechanism 50 showing an operation state when the disc tray 70 is ejected manually. As shown in FIG. 5, the left side surface 40 of the chassis 40
An opening 40b for manually operating the loading mechanism 50 is provided in a. This opening 40
b is provided at a position facing the end portion 53a of the slide cam (slide member) 51 of the loading mechanism 50.

The slide cam 51 has a rack 51b (see FIG. 6) with which a gear 63 for driving the disc tray 70 meshes, as will be described later, and has a plate shape wide from the opening 40b of the left side surface 40a. By inserting a tool or the like (not shown) formed on the disk and sliding it in the right direction (X2 direction) in FIG. 6 with a pressing force F2, the locking with respect to the disk tray 70 is released, and the disk tray 70 is moved to a predetermined position. It is possible to move only the distance in the eject direction (Y2 direction). Therefore, the opening 40b of the chassis 40
And the slide cam 51 constitute a second manual eject mechanism 46B.

In the second manual eject mechanism 46B,
The disc tray 70 can be moved from the recording / reproducing position in the eject direction (Y2 direction) by sliding a slide cam 51 through a tool having a wide plate shape from the left side surface 40a of the chassis 40 through the opening 40b. Therefore, the eject operation can be easily performed especially during the assembling work. Incidentally, as the above tool, a minus driver,
Alternatively, any size may be used as long as it can pass through the opening 40b such as a wide metal plate.

The disc tray 70 is normally constructed to move in the Y1 or Y2 direction by the loading or unloading operation of the loading mechanism 50. Therefore, the manual eject mechanism 46
Although A and 46B are not usually used, they are effective when a power failure occurs, when the motor 61 of the loading mechanism 50 fails, or when the disc tray 70 is manually pulled out during assembly work.

FIGS. 7, 8A and 9 are a bottom view, a right side view and a sectional view taken along line MM in FIG. 7 of the disc tray 70, respectively. As shown in FIG. 7, FIG. 8A, FIG. 9 and FIG. 2, the disc tray 70 is formed of resin or the like and has a concave disc mounting portion 71 adapted to mount an optical disc. The optical disc is placed on the disc placing portion 71 of the disc tray 70, and is transported from the disc attaching / detaching position to the disc recording / reproducing position in a state where the position is regulated to a predetermined position.

Further, the disc tray 70 has a substantially rectangular opening 711 formed from the substantially central portion of the disc mounting portion 71 toward the rear portion (Y1 direction in FIG. 6). When the disc tray 70 is at the recording / reproducing position, the turntable 49 (which is hidden behind the disc clamper 80 and is not visible in FIGS. 1 and 2) and the optical pickup 47 are mounted below the opening 711 so as to descend. .

Optical pickup 47 and turntable 4
9 is a base frame 421 (see FIGS. 11 and 1) described later.
2 (A) and (B)), and after the disc tray 70 moves to the recording / reproducing position, the base frame 4
The front end of 21 rotates upward to enter the opening 711 to clamp the disc, and the optical pickup 47 closely faces the lower surface of the disc to enable recording or reproduction. The optical pickup 47 is supported so as to enter the opening 711 and be movable in the disc radial direction (tracking direction).

When an eject operation is performed, the front end of the base frame 421 pivots downward so that the movement of the disc tray 70 is not hindered, and the optical pickup 47 and the turntable 49 are lowered below the opening 711. . The raising / lowering operation of the base frame 421 is performed by the sliding operation of the slide cam 51 that slides in conjunction with the movement of the disc tray 70, as will be described later.

As shown in FIG. 9, the disc tray 70 is provided with left and right side portions 72L and 72R which are supported by the left and right disc tray support surfaces 44 which are provided so as to project from the left and right side surfaces 79 of the disc tray 70. . The bottom surfaces of the left and right side portions 72L and 72R have the disk tray support surface 44.
And a guide rib 44 on each of the surfaces.
Sub guide grooves 72b and 72c guided by b and 44c
Are formed respectively. Further, on the back surface of the disc tray 70, a guide protrusion 44a of the disc tray support surface 44 is formed.
A main guide groove 72a that slides with the groove sandwiched is further formed.
With this configuration, the disc tray 70 can smoothly move along a predetermined path without directly contacting the disc tray support surface 44, and rattling of the disc tray 70 in the left-right direction is prevented.

The upper surfaces of the left and right side portions 72L and 72R are reference surfaces 75a parallel to the disc tray support surface 44.
In the same manner, in order to ensure the smooth sliding of the disc tray 70, the protrusions 43L and 43R of the chassis 40 are provided.
A small gap is set between the reference surface 75a and the reference surface 75a, and the protrusions 43L and 43R are not in contact with the reference surface 75a.

FIG. 8 (B) is an enlarged view of the N portion of the disc tray 70 of FIG. 8 (A). As shown in FIGS. 8 (B) and 7, the left and right side portions 72L, 7 of the disc tray 70.
Elastic pressing portions 77L and 77R for pressing the protruding portions 43L and 43R of the chassis 40 upward are formed at the front end portion of the 2R so as to prevent the vibration of the disc tray 70.

The elastic pressing portions 77L and 77R respectively apply pressing surfaces 771 slightly offset from the reference surface 75a to the protruding portions 43L and 43R in order to apply a desired pressing force to the protruding portions 43L and 43R. Have. Further, in order to make the elastic pressing portions 77L and 77R have a flexible structure, at least the supporting ends of the elastic pressing portions 77L and 77R are formed thin.

In this embodiment, the elastic pressing portions 77L and 77R are used.
Elastic pressing parts 77L, 77 to make the structure flexible.
As shown in FIG. 7 and FIG. 8A, R is the meat under the side portions 72L and 72R of the disc tray 70 (the sub guide groove 7).
2b, 72c forming portion) is thinly formed. Further, structurally, the elastic pressing portions 77L, 77R have slits formed between the side edges of the elastic pressing portions 77L, 77R and the side surface 79 of the disc tray 70.
It has a cantilever structure that is not supported by the side surface 79 (see FIG. 7).

Pressing surfaces 771 of the elastic pressing portions 77L and 77R
Is preferably an inclined surface 7 inclined from the reference surface 75a.
It is continuously formed from the reference surface 75a via 72 (see FIG. 8B). Thereby, for example, when the disc tray 70 is pulled out to the disc recording / reproducing position, the protrusions 43L, 43 of the disc tray 70 and the chassis 40 are formed.
Since the positional relationship with R shifts from the reference surface 75a of the disc tray 70 to the pressing surface 771 via the inclined surface 772, the elastic pressing portion 77 begins to elastically deform, and the disk tray 70 is gradually increased. The pressing force to move the protrusion 43
It is received from L and 43R, and is securely restrained by the chassis 40 at the disc reproducing position.

FIG. 10 is a schematic view for explaining the relationship between the protruding portion 43 of the chassis 40 and the disc tray 70 when the disc tray 70 moves to the disc reproducing position. It is the side view seen from. Figure 10
The states A, B, and C shown in (A), (B), and (C) show the states of the elastic pressing portion 77 of the disc tray 70 at each position where the disc tray 70 moves to the reproduction position.

In the state A (see FIG. 10A), the reference surface 75a of the disc tray 70 is not in contact with the protruding portion 43 of the chassis 40, and the disc tray 70 is moving smoothly.

In the state B (see FIG. 10B), the inclined surface 772 of the disc tray 70 begins to come into contact with the projecting portion 43 of the chassis 40 and gradually elastically deforms.

In the state C (see FIG. 10C), the pressing surface 771 of the disc tray 70 is elastically deformed by the desired amount by the protrusion 43.

As is apparent from these, the disc tray 70 is displaced in the vertical direction by the pressing force of the elastic pressing portion 77 elastically deformed between the guide projection 44a and the guide projections 44b and 44c of the chassis 40 and the projecting portion 43. Is restrained, and the vibration of the disc tray 70 due to the rotation of the optical disc is completely prevented.

As shown in FIG. 7, the disc tray 70 is provided on the back side of the disc tray 70.
The slide cam 5 is formed along the moving direction of 0 and engages with the protrusion 51c of the slide cam (slide member) 51.
1 is formed in the back surface of the disc tray 70 along the moving direction of the disc tray 70, and the regulation grooves 78a and 78b provided with inclined portions for sliding 1 in the left-right direction (X1 and X2 directions in FIG. 7). 70 further includes a rack 74 for driving between the disc reproducing position and the disc loading / unloading position.

FIG. 11 is an exploded perspective view schematically showing the mechanism unit 42. As shown in FIG. 11, the mechanism unit 42 includes a base frame (elevation base) 421.
And a base plate 422 supported on the base frame 421 via an elastic member 441 as a damper. Further, the mechanism unit 42 is rotatably attached to the mechanism unit mounting portion 45 behind the chassis 40 (see FIGS. 12A and 12B).

On the front surface of the base frame 421 (on the side of the loading mechanism 50), the guide pin 4 inserted into the cam groove 51a of the slide cam 51 of the loading mechanism 50.
Rotating shafts 431, which are formed to project, are provided on both rear sides of the base frame 421 and serve as a center of rotation when performing an ascending / descending operation.
Are formed so as to project in the left-right direction. The rotating shaft 431 is rotatably inserted into a bearing portion 432 (see FIG. 2) formed on the chassis 40 side. With this configuration, as will be described later, the mechanism unit 42 is rotated around the rotation shaft 431 by the slide movement of the slide cam 51 that slides in the left-right direction in conjunction with the movement of the disc tray 70, and the guide pin 430. The front end portion having the
(See (A)) or lowered position (see FIG. 12 (B))
Moves up and down between and.

The base plate 422 generally has a turntable 49 that holds an optical disc between it and a disc clamper 80, and a turntable 49 that reproduces or records the optical disc.
An optical pickup 47 for reproduction and a guide mechanism 4 for guiding the optical pickup 47 in the radial direction of the optical disc.
71, a spindle motor 491 that rotates the turntable 49, and a thread motor 472 that drives the optical pickup 47 via a gear mechanism (not shown) are mounted.

The optical pickup 47 aligns the laser light emitted from a laser light source such as a laser diode into parallel light rays by a collimation lens or the like, focuses the light on a disc surface by an objective lens, and reads out the recorded information. It plays a role of separating the reflected laser light by a prism or the like and guiding it to a light receiving element such as a photo diode.

As shown in FIG. 11, the spindle motor 491 is screwed to the front rear side of the base plate 422. Further, the spindle motor 491 can rotate at a high speed, and for example, an optical disc is 180 to 300.
It can rotate at about 0 rpm.

The turntable 49 is fixed to the rotary shaft of the spindle motor 491. This turntable 49
Is a disk-shaped member, and a center hub 492 formed by a ring-shaped projection is formed at the center of the disk. The center hub 492 is fitted in the center hole of the optical disc to guide the clamp position of the disc.

A ring-shaped permanent magnet for attracting the disk clamper 80 is provided inside the center hub 492 and around the rotation shaft of the spindle motor 491. A ring-shaped pad 493 is adhered to a portion around the center hub 492 on the upper side of the turntable 49 (on which the optical disc is clamped). The pad 493 is made of a material having elasticity and a relatively large friction coefficient, such as various rubbers, soft resins, and porous materials. This prevents the optical disc from slipping when the optical disc is nipped and rotated.

With this structure, the optical disc mounted on the disc tray 70 is conveyed to the recording / reproducing position by the disc tray 70, clamped between the turntable 49 and the disc clamper 80, and rotated by the rotation of the spindle motor 491. It is driven to rotate together with the table 49.

The spindle motor 491 and the sled motor 472 are controlled by a control circuit (not shown) provided on the circuit board together with a loading motor 61 described later.

12A and 12B are views showing the raising / lowering operation state of the mechanism unit 42. FIG. 12A is a side view showing a state where the front end of the mechanism unit 42 is raised, and FIG. 12B is a mechanism unit 42.
It is a side view showing a state in which the front end of is lowered.

The mechanism unit 42 is raised to the loading mechanism storage portion 41 of the chassis 40 (see FIG. 12A).
(See FIG. 12B) and the lowered position (see FIG. 12B), the disc tray 7 is rotated about the rotation shaft 431.
A loading mechanism 50 is provided for moving 0 between the disc playback position and the disc loading / unloading position.
The loading mechanism 50 includes a slide cam 51 that moves the mechanism unit 42 up and down, and a drive mechanism 60 that drives the disc tray 70 and the slide cam 51.

The slide cam 51 is made of resin or the like, and has a horizontal surface 52 facing the upper surface of the loading mechanism storing portion 41 of the chassis 40 and a vertical surface facing the vertical wall behind the loading mechanism storing portion 41 of the chassis 40. 53
It has an inverted L-shaped cross section and is slidably mounted behind the loading mechanism storage portion 41 of the chassis 40.

FIG. 13 is a view for explaining the structure of the slide cam 51, (A) is a plan view showing a horizontal plane 52,
(B) is a front view showing the vertical surface 53 of the slide cam 51.

As shown in FIGS. 13A and 13B, the slide cam 51 has a loading mechanism 50 on the horizontal plane 52.
Rack 51b that engages with the drive mechanism 60 and the protrusion 51 that engages with the restriction grooves 78a and 78b of the disc tray 70.
and the vertical surface 53 has a cam groove 51a into which the guide pin 430 of the base frame 421 is inserted.

The cam groove 51a is formed in the left-right direction (see FIG. 13).
A straight line receiving portion 511a extending in the X1 and X2 directions shown in (B), and an inclined receiving portion 511b continuously inclined from the straight line receiving portion 511a in the upward direction (Z1 direction shown in FIG. 13B). Have.

On the horizontal plane 52, the disc tray 7
When 0 moves in the Y1 direction and reaches the disc recording / reproducing position (see FIG. 1), the upper portion 8 of the detection knob 84 to be described later
A rectangular opening 51d is provided at a position facing 4a.

The slide cam 51 moves in the left-right direction (see FIG. 13).
When sliding in the X1 and X2 directions shown in (B),
Regarding the guide pin 430 inserted into the cam groove 51a, the guide pin 430 has a linear receiving portion 511a and an inclined receiving portion 511.
It is supported by b and moves.

When the guide pin 430 moves in the straight line receiving portion 511a, the mechanical unit 42 mounted on the base frame 421 is held in the lowered state, and the guide pin 430 is held.
When moving the tilt receiving portion 511b, the mechanical unit 4
2 is moved up and down, and when the guide pin 430 is located at the end point of the tilt receiving portion 511b, the mechanical unit 42
Is held in an elevated state.

Further, the driving mechanism 6 of the loading mechanism 50
As shown in FIG. 3, reference numeral 0 refers to a loading motor 61, which is provided on the back side of the front portion of the chassis 40 and includes a DC motor capable of forward / reverse rotation, and a transmission mechanism 65 for transmitting the rotation of the loading motor 61. Composed.

The transmission mechanism 65 includes a first pulley 621, a second pulley 622 fixed to the rotating shaft of the loading motor 61, a coaxial gear A (not shown) integrally formed under the second pulley 622, and A pulley mechanism 62 including a belt 624, a second gear 63 that is integrally formed on an upper portion of a gear B631 that meshes with the gear A623, is coaxial with the gear B631 and has a smaller diameter, and a second gear 63.
And a third gear 64 that meshes with.

Further, the rack 51b projects at a substantially intermediate position in the width direction of the horizontal plane 52 with a predetermined width dimension, and the slide cam 51 is directed to the right (X2 direction shown in FIG. 13B).
When it is positioned at, the transmission mechanism 65 is separated from the second gear 63. Immediately before the disc tray 70 arrives at the recording / reproducing position, the protrusion 51c is moved to the disc tray 7
The slide cam 51 is slid in the left direction (X1 direction shown in FIG. 13B) by engaging with the 0 restriction groove 78b.

As a result, the slide cam 51 slides to the position where the rack 51b meshes with the second gear 63 of the transmission mechanism 65. After that, it is driven by the loading motor 61 that rotationally drives the second gear 63 and slides in the X1 direction. As a result, the front portion of the mechanical unit 42 is raised.

When the third gear 64 meshes with the rack 74 of the disc tray 70, this transmission mechanism 65 moves the disc tray 70 between the disc mounting / removing position and the disc recording / reproducing position. Further, in the transmission mechanism 65, the second gear 63 is used in the rack 51 of the slide cam 51.
When meshed with b, the operation of sliding the slide cam 51 is performed, and as a result, the guide pin 430 of the mechanism unit 42 moves the tilt receiving portion 59.

Here, the disk device 1 according to the above embodiment
The operation of will be described. When the operator places an optical disc on the disc placing portion 71 of the disc tray 70 pulled out from the opening of the disc device 1 and performs a predetermined loading operation, the loading motor 61 rotates. While the protrusion 51c of the slide cam 51 is engaged with the restriction groove 78a extending in the moving direction of the disc tray 70, the rack 74 of the disc tray 70 meshed with the third gear 64 of the transmission mechanism 65 The disc tray 70 is moved toward the disc loading / unloading position and the disc recording / reproducing position. At this time, since the mechanism unit 42 is held in the lowered position, the disc tray 70 is not moved to the mechanism unit 4.
It moves to the disc playback position without interfering with 2.

Immediately before the disc tray 70 reaches the disc recording / reproducing position, the protrusion 51c of the slide cam 51 moves from the first regulating groove 78a to the second regulating groove 78b. At this time, the slide cam 51 is connected to the mechanical unit 42.
Guide pin 430 of the slide cam 51 is slid so as to move from the straight line receiving portion 511a to the branch portion between the straight line receiving portion 511a and the inclined receiving portion 511b.
b is the position immediately before meshing with the second gear 63 of the transmission mechanism 65.

When the disc tray 70 further moves and reaches the point where the protrusion 51c of the slide cam 51 engages with the second restriction groove 78b, the third gear 64 of the transmission mechanism 65 becomes in contact with the rack 74 of the disc tray 70. The engagement is released.
Then, due to the rotation of the second gear 63 of the transmission mechanism 65 that meshes with the rack 51b, the slide cam 51 is slid so that the guide pin 430 of the mechanism unit 42 moves in the tilt receiving portion 511b. As a result, the mechanism unit 42 rises and the attracted member made of iron embedded in the disc clamper 80 is attracted to the permanent magnet embedded in the turntable 49, so that the optical disc is moved between the disc clamper 80 and the turntable 49. The operation for reproducing or recording the disc is completed.

During this clamping operation, the disc tray 70
Are guided by guide protrusions 44a and guide ribs 44b and 44c on the disc tray supporting surface 44 of the chassis 40. Then, when the disc tray 70 moves to the disc reproducing position, the elastic pressing portions 77L and 77R of the disc tray 70 are protruded from the chassis 43.
The disc tray 70 is securely restrained to the chassis 40 by pressing L and 43R upward respectively.

After that, when the operator performs a recording or reproducing operation, the motor 491 is rotationally driven and the optical disc clamped between the disc clamper 80 and the turntable 49 starts to rotate. At this time, since the disc tray 70 is restrained with respect to the chassis 40 as described above, the vibration of the disc tray 70 due to the rotation of the optical disc and the impact from the outside does not occur.

FIG. 14 is a vertical sectional view showing the structure of the detection mechanism 82 for detecting the operation of the slide cam 51. As shown in FIG. 14, the detection mechanism 82 includes a detection knob 84 that detects the position of the slide cam 51, a coil spring 85 that biases the detection knob 84 upward, and a detection switch that is arranged below the detection knob 84. And 86. The detection knob 84 has an upper portion 84a formed in a trapezoidal shape like an umbrella, and the upper portion 84a has a hole 44 in the disc tray support surface 44.
It projects above d. A shaft 84b extending below the detection knob 84 is inserted into a shaft holding portion 44e extending below the disc tray support surface 44 and is held slidably in the vertical direction.

Further, both ends 84c and 84d of the upper portion 84a of the detection knob 84 project laterally.
4c and 84d are holes 44d in the disc tray support surface 44.
The contact with the locking portions 44f projecting to both sides of the is restricted to move upward. The detection knob 84 is formed of a resin material, and both end portions 84c and 84d are provided inside so as to be elastically deformable.

Therefore, when attaching the detection knob 84,
The coil spring 85 wound around the shaft 84b is inserted into the shaft holding portion 44e, and the upper portion 84a is press-fitted into the hole 44d of the disc tray support surface 44. At this time, both end portions 84c and 84d of the upper portion 84a are deformed inward along the inclined surfaces 44g provided on both sides of the hole 44d, and when passing through the locking portion 44f, the state of protruding outward is restored. With this, the detection knob 84 is biased upward by the coil spring 85, and
Both end portions 84c and 84d contact the locking portion 44f from below and are prevented from protruding upward.

Therefore, it is not necessary to attach a separate member for preventing the detection knob 84 from popping out into the hole 44d of the disc tray support surface 44, and the number of parts is reduced.

The detection switch 86 is composed of a micro switch or the like, and the movable contact piece 86a has a shaft 84b of the detection knob 84.
Are mounted on the substrate 87 so as to closely face each other. The detection switch 86 may be a switch (for example, a membrane switch) other than the micro switch.

Here, the operation of the detection mechanism 82 configured as described above will be described with reference to FIGS.

As shown in FIG. 15A, when the disc tray 70 is pulled out to the disc loading / unloading position (see FIG. 2), the slide cam 51 is moving to the right side (X2 direction). , Horizontal part 5 of slide cam 51
2 is to the right of the detection knob 84. In this state, since the detection knob 84 is biased upward by the spring force of the coil spring 85, the shaft 84b of the detection knob 84 is separated from the movable contact piece 86a of the detection switch 86.

As shown in FIG. 15B, the disc tray 70 is moved from the disc loading / unloading position (see FIG. 2) to Y1.
Just before moving to the disk recording / reproducing position, the projection 51c of the slide cam 51 extends from the first restricting groove 78a extending in the Y1 and Y2 directions to the second restricting groove 78b inclined with respect to the moving direction. Transition to.

As a result, the slide cam 51 starts moving to the left side (X1 direction). Therefore, the horizontal portion 52 of the slide cam 51 presses the upper portion 84a of the detection knob 84 protruding from the disc tray support surface 44 downward. As a result, the detection knob 84 descends and the shaft 84b pushes down the movable contact piece 86a of the detection switch 86, and the detection switch 8
Switch 6 from off to on.

As shown in FIG. 15C, when the disc tray 70 further moves in the Y1 direction and reaches the disc recording / reproducing position (see FIG. 1), the slide cam 51 is moved.
The opening 51d faces the upper portion 84a of the detection knob 84.

As a result, the detection knob 84 has an upper portion 84a.
Moves upward so as to fit into the opening 51d of the slide cam 51. As a result, the detection knob 84 is raised and the shaft 8
4b separates from the movable contact piece 86a of the detection switch 86, and switches the detection switch 86 from on to off. In this way, the control circuit can determine the operating state of the disc tray 70 from the change (ON or OFF) of the signal output from the detection switch 86.

Further, in the process in which the disc tray 70 moves from the disc recording / reproducing position to the disc loading / unloading position, the detection mechanism 82 performs a detection operation reverse to the above.

Here, the operation of pulling out the disc tray 70 by a manual operation when the loading mechanism 50 for driving the disc tray 70 fails or when the motor 61 of the loading mechanism 50 cannot be supplied with power is shown in FIGS. This will be described with reference to 16.

When the disc tray 70 is inserted in the disc recording / reproducing position (see FIGS. 1 and 3), the slide cam 51 is moving to the right (X2 direction), and the protrusion of the slide cam 51 is moved. A wall surface 78 in which 51c extends in the lateral direction (X1, X2 direction) after passing through the second restriction groove 78b.
It is at a position P1 where it abuts c (see FIG. 7). Therefore, even if the front surface of the disc tray 70 is grasped and pulled out, the wall surface 78c of the disc tray 70 comes into contact with the protrusion 51c of the slide cam 51 and the movement in the Y2 direction is restricted.

Therefore, in the loading mechanism 50, the slide cam 51 is slid in the X2 direction so that the protrusion 51c is separated from the wall surface 78c of the disc tray 70 and moved to the position P2 which fits into the second restriction groove 78b. There is a need. Then, the protrusion 51 of the slide cam 51
If c is in a position where it fits into the second restriction groove 78b, the protrusion 51c can pass through the second restriction groove 78b and move to the P3 position of the first restriction groove 78a.
It becomes possible to directly grasp 0 and manually move it in the Y2 direction.

Therefore, when ejecting the disc tray 70 by manual operation, the first manual eject mechanism 4 is used.
The slide cam 51 is slid by 6A or the second manual eject mechanism 46B.

For example, after the disk device 1 is installed in the housing (not shown) of the personal computer, the wire is inserted from the opening 40d provided in the front surface 40c of the chassis 40 constituting the first manual eject mechanism 46A. A long and narrow object such as the gear 64 of the loading mechanism 50
Is rotated to slide the slide cam 51 to the right (X2 direction).

Further, before the disk device 1 is incorporated into a housing (not shown) of a personal computer, for example, a slide cam is passed from the left side surface 40a of the chassis 40 constituting the second manual eject mechanism 46B through the opening 40b. Slide 51 to the right (X2 direction).

Here, the second manual eject mechanism 46
The eject operation by B will be described in detail. First, the operator inserts a wide plate-shaped tool or the like into the opening 40b of the left side surface 40a and pushes the end 53a of the slide cam 51 with the pressing force F2 toward the right direction (X2 direction) in FIG. Press. At this time, the slide cam 51 moves to the rack 51b.
The gear 6 (see FIG. 6) that drives the disc tray 70
3, the disc tray 70 is slid rightward (X2 direction) to move the disc tray 70 a predetermined distance YL.
Only (see FIG. 16) can be moved in the eject direction (Y2 direction).

As a result, the horizontal plane 5 of the slide cam 51 is
2 is a wall surface 78c (see FIG. 7).
(See (1)) to the P2 position where the second restricting groove 78b is fitted. as a result,
Since the protrusion 51c of the slide cam 51 passes through the wall surface 78c and is fitted into the second restriction groove 78b, the locking (movement restriction) with respect to the disc tray 70 is released.

After this, the operator directly grips the disc tray 70 and manually pulls it out in the Y2 direction to move it to the disc loading / unloading position (P3 position). In this way, when the end portion 53a of the slide cam 51 is pressed from the opening 40b formed in the left side surface 40a of the chassis 40, the slide cam 51 can be slid, and the disc tray 7
It is possible to easily release the lock (movement limitation) of 0 and pull out the disc tray 70 manually.

Since the opening 40b is wider than the small hole and has a sufficiently large vertical height, it can be easily slid even with a wide tool (for example, a flat-blade screwdriver or a plate-shaped metal piece). Since the cam 51 can be slid, the eject operation of the disc tray 70 can be performed in a shorter time than when the eject operation is performed from the front side.

In the above embodiment, the eject operation opening 40b is formed on the left side surface 40a of the chassis 40, but the invention is not limited to this, and the eject operation can be performed from a direction other than the front side. It can also be configured to.

[0092]

As described above, according to the first aspect of the present invention, it has a disc mounting portion for mounting a disc, and a disc recording / reproducing position for recording or reproducing and a disc attaching / detaching position for exchanging the disc. A disc tray that is movably supported between the disc tray and a disc tray that moves when the disc tray moves to the disc playback position. A lift base that moves up and down according to a position, a slide member that engages with an end of the lift base and is slidably supported, and a drive that slides the slide member to move the lift base up and down and move the disc tray. A disk device including a mechanism, wherein the slide member is slid by a manual operation from a direction other than the front of the disk device body. Equipped with an eject mechanism for ejecting B, you can operate the disc tray from a direction other than the front of the device when you pull it out manually, so you do not have to do the troublesome operation of inserting a wire through a small hole like in the past. Besides, it becomes possible to move the disc tray to the disc attaching / detaching position by releasing the lock on the disc tray by the manual operation from the direction easy to operate.

According to the second aspect of the invention, since the eject mechanism slides the slide member by the pressing operation from the side surface of the disc device body to eject the disc tray, the slide member is pushed from the side of the device. It is possible to easily release the lock on the disc tray and move the disc tray to the disc attachment / detachment position by pressing.

[Brief description of drawings]

FIG. 1 is a plan view of a disc device according to the present invention with a disc tray in a disc reproducing position.

FIG. 2 is a plan view of a disc device according to the present invention with a disc tray in a disc loading / unloading position.

3 is a plan view of the chassis of FIG. 1. FIG.

FIG. 4 is a front view of the chassis of FIG.

5 is a left side view of the chassis 40. FIG.

FIG. 6 is a plan view of the loading mechanism 50 showing an operation state when ejecting the disc tray 70 by a manual operation.

FIG. 7 is a bottom view of the disc tray.

8A and 8B are views for explaining the configuration of a disc tray, FIG. 8A is a right side view of the disc tray according to the present invention, and FIG. 8B is an enlarged view of an N portion of the disc tray shown in FIG. 8A. is there.

9 is a sectional view of the disc tray taken along line MM in FIG. 7. FIG.

10 is a schematic view for explaining the operation when the disc tray moves to the disc reproducing position, and is a side view seen from the arrow L in FIG.

11 is an exploded perspective view showing a schematic configuration of a mechanism unit 42. FIG.

12A and 12B are diagrams showing a raising / lowering operation state of the mechanism unit, wherein FIG. 12A is a side view showing a state where a front end of the mechanism unit is raised, and FIG. It is a side view.

13A and 13B are views for explaining the configuration of the slide cam 51, FIG. 13A is a plan view showing a horizontal plane 52, and FIG. 13B is a front view showing a vertical plane 53 of the slide cam 51.

14 is a vertical cross-sectional view showing the configuration of a detection mechanism 82 that detects the operation of the slide cam 51. FIG.

15A and 15B are views for explaining the operation of the detection mechanism, in which FIG. 15A is a vertical cross-sectional view showing an operation state when the disc tray is in the disc recording / reproducing position, and FIG. FIG. 6C is a vertical cross-sectional view showing the operating state immediately before the position, and FIG. 6C is a vertical cross-sectional view showing the operating state when the disc tray reaches the disc loading / unloading position.

FIG. 16 is a plan view showing drawing positions P1 to P3 of the disc tray.

[Explanation of symbols]

1 disk device 2 device body 40 chassis 40a left side 40b opening 40c front 40d opening 41 Loading mechanism storage area 42 mechanical unit 421 base frame 422 base plate 43L protrusion 43R protrusion 430 guide pin 431 rotation axis 432 Bearing 44 Disc tray support surface 44a Guide protrusion 44b Guide rib 44c Guide rib 44d hole 44e Shaft holder 44f Locking part 44g slope 441 elastic member 45 Mechanical unit mounting area 46A First manual eject mechanism 46B Second manual eject mechanism 47 Optical pickup 471 guide mechanism 472 thread motor 48 Disk clamper storage area 49 turntable 491 Spindle motor 50 loading mechanism 51 slide cam 51a cam groove 51b rack 51c protrusion 52 Horizontal 53 vertical plane 53a end 60 drive mechanism 61 loading motor 62 pulley mechanism 621 first pulley 622 second pulley 623 Gear A 624 belt 63 Second Gear 631 Gear B 64 3rd gear 65 Transmission mechanism 70 disc tray 71 Disk mount 711 opening 72L left side 72R Right side 72a Main guide groove 72b Sub guide groove 72c Sub guide groove 74 racks 78a, 78b restriction groove 78c wall surface 80 disk clamper 82 Detection mechanism 84 Detection knob 84a upper part 84b axis 84c, 84d end 85 coil spring 86 detection switch 87 substrate

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tokio Tsubata             2 Mitsu, 8-8, Kokuryo-cho, Chofu-shi, Tokyo             Mi Electric Co., Ltd. head office (72) Inventor Hisataka Usui             2 Mitsu, 8-8, Kokuryo-cho, Chofu-shi, Tokyo             Mi Electric Co., Ltd. head office F-term (reference) 5D046 AA16 CB11 CC02 EB04 HA02

Claims (2)

[Claims] 1. A disc tray having a disc placing portion for placing a disc and movably supported between a disc recording / reproducing position for recording or reproducing and a disc attaching / detaching position for exchanging the disc, A pickup that faces the disc mounted on the disc mounting portion when the disc tray moves to the disc reproducing position; and an elevating base to which the pickup is attached and which moves up and down according to the moving position of the disc tray. A slide member engaged with an end of the elevating base and slidably supported, and a drive mechanism for sliding the slide member to elevate the elevating base and move the disc tray. A disk device, wherein the slide member is manually operated to slide from a direction other than a front surface of the disk device body. A disk device comprising an eject mechanism for ejecting a tray. 2. The disc device according to claim 1, wherein the eject mechanism causes the disc tray to be ejected by sliding the slide member by a pressing operation from a side surface of the disc device main body.