JP2008130148A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a tray moved forward most from swinging or falling at its front end. <P>SOLUTION: A disk D loading tray 1 is arranged on a loader chassis 2 to move forward and backward (a and b), a traverse chassis 3 on which a turntable 6 and an optical pickup 8 are mounted is arranged in the loader chassis 2 to be moved up and down, a reference piece 25 is disposed in the front part of the loader chassis 2, and a projection piece 26 is disposed in the backside of the tray 1 facing the reference piece 25 in the forward and backward direction (a and b). When the tray 1 is moved forward most (a), the projection piece 26 is abutted on the pinion facing side surface 25a of the reference piece 25 to prevent swinging of the tray 1. One guide frame 18 is projected in the center of the backside front of the tray 1, and a weight 32 is disposed near a tray rack 16 in the backside rear part of the tray 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a disk device such as a DVD recorder or a DVD player, and in particular,
The tray that has been moved forward most is not swung or its front end is not lowered.

FIG. 8 is a plan view showing the play mode state, FIG. 9 is a longitudinal sectional view, and FIG. 10 is a partially cut view showing the tray open state. FIG. 11 is a rear perspective view of the tray.

As shown in FIG. 8 to FIG. 11, this is a DVD recorder, and a synthetic resin tray 1 for mounting a disk D is disposed on a synthetic resin loader chassis 2 so as to be able to move forward and backward. A synthetic resin traverse chassis 3 including a chassis main body 3a and a lever shift 3b is disposed therein, and the rear portion of the chassis main body 3a can be moved up and down by the loader chassis 2 via a rear elastic body 4 made of rubber. And the front portion of the chassis main body 3a is connected to the lever shift 3b via a front elastic body 5 made of rubber, and the spindle motor 7 with the turntable 6 and the radial direction of the disk D are mounted on the chassis main body 3a. And an optical pickup 8 with an objective lens OL that can be moved to.

As shown in FIGS. 9 and 10, the cam slider 10 is slidably disposed along the left and right directions e and f perpendicular to the forward and backward a and b directions at the front portion of the loader chassis 2 and formed on the cam slider 10. The cam slider 11 and the lever shift 3 are formed by the cam mechanism 11 including the cam groove 11a and the cam pin 11b which is provided in the lever shift 3b and is fitted into the cam groove 11a.
b is linked and linked.

As shown in FIG. 10, the first pinion 13 is rotated forward and backward at the front portion of the loader chassis 2.
, H, and a cam rack 14 that can mesh with the first pinion 13 is provided in the cam slider 10, and a second pinion 15 is formed concentrically and integrally with the first pinion 13.
A tray rack 16 that can mesh with the second pinion 15 is moved forward and backward on the back surface of the tray 1.
A pair of left and right guide pins 17 projecting from the cam slider 10 are formed on the cam slider 10, and a pair of left and right guide frames 18 with inclined surfaces 18 a engageable with the guide pins 17 are formed on the rear surface of the tray 1. Projected.

In FIG. 10, reference numeral 20 denotes a third pinion rotated forward and backward by a feed motor (not shown), which meshes with the rack 21 of the optical pickup 8 to reciprocate the optical pickup 8. In FIG. 8, reference numeral 22 denotes a clamper that is fitted to the central portion of the cross beam 23 installed on the loader chassis 2 so as to be movable up and down within a certain range, and clamps the disk D with the turntable 6.

In the play mode, as shown by solid lines in FIGS. 8 and 9, the tray 1 is moved backward b and stored in the loader chassis 2, and the traverse chassis 3 is moved up c to turn the turntable 6.
The disc D is clamped by the clamper 22, the disc D is rotated at a high speed by the spindle motor 7 via the turntable 6, and the third pinion 2 is rotated by the feed motor.
The optical pickup 8 is reciprocated through 0 and the rack 21, the laser light is projected from the objective lens OL onto the disk D, and information recorded on the disk D is read based on the reflected light.

When the tray is opened, as shown in FIG. 10, the third pinion 20 is fed by the feed motor.
Then, the optical pickup 8 is moved in the forward a direction via the rack 21 and the cam slider 14 is slid in the arrow f direction via a trigger mechanism (not shown) linked thereto, whereby the cam rack 14 is moved to the first pinion 13. The traverse chassis 3 is moved down d via the cam mechanism 11 (see the phantom line in FIG. 9) by causing the first pinion 13 to rotate forward g and further sliding the cam slider 10 in the direction of the arrow f. The disk D on the table 6 is transferred onto the tray 1.

Then, by pressing each guide pin 17 against the inclined surface 18a of each guide frame 18,
The tray 1 is moved forward a slightly so that the tray rack 16 meshes with the second pinion 15, and the second pinion 15 is rotated forward by a predetermined time (for example, 2 to 5 seconds) by a timer control. , The tray 1 is moved forward a, and the tray 1 is stopped at the most forward position a. At the time of tray-in, the operation is performed in the reverse procedure. In addition, there exists a thing described in patent document 1, 2 as a related technique.
JP 2006-155731 A JP 2003-100004 A

In the conventional configuration, as shown by the phantom line T in FIG. 10, when the tray 1 is moved forward a most, the tray 1 is pressed by the rotational force F in the forward rotation g direction of the second pinion 15. Swinged in the horizontal direction, the center axis O2 of the tray 1 is displaced by a slight angle α with respect to the center axis O1 of the loader chassis 2 to make the appearance look worse, or at the most advanced position a. When the tray 1 is moved backward b, the swing of the tray 1 is corrected, and noise may be generated during the correction, which may cause discomfort to the user.

As shown by a two-dot chain line in FIG. 9, when the tray 1 is moved forward a, the center of gravity of the tray 1 moves forward from the loader chassis 2 and its front end becomes heavy. As shown, the front end of the tray 1 has a slight angle β, but the appearance of the appearance deteriorates.

An object of the present invention is to provide a disk apparatus in which the most advanced tray is not swung and its front end is not lowered in view of the above-described conventional drawbacks.

In order to achieve the above object, according to the first aspect of the present invention, a disk mounting tray is disposed so as to be able to move forward and backward in a loader chassis, and a traverse chassis on which a turntable and an optical pickup are mounted is vertically installed in the loader chassis. The cam slider is slidably disposed along the left-right direction perpendicular to the forward / backward direction at the front part of the loader chassis, and the cam slider and the front part of the traverse chassis are interlocked and connected via a cam mechanism. A first pinion is disposed at the front portion of the loader chassis so as to be able to rotate forward and backward, and a cam rack that can mesh with the first pinion is provided on the cam slider, and a second pinion is concentrically integrated with the first pinion. A tray rack formed and meshable with the second pinion is formed on the back surface of the tray along the forward and backward direction, A guide pin is provided on the cam slider, and a guide frame with an inclined surface that can be engaged with the guide pin is provided on the rear surface of the tray. In the play mode, the disc is rotated at high speed by a turntable. The information recorded on the disc is read by an optical pickup, and when the tray is opened, the cam rack is engaged with the first pinion, and the first pinion is rotated forward to slide the cam slider in the left and right directions, via the cam mechanism. By moving the traverse chassis downward, the disc is transferred from the turntable onto the tray, the guide pin is pressed against the inclined surface of the guide frame, and the tray is slightly advanced to engage the tray rack with the second pinion, Advance the tray through the tray rack by rotating the 2 pinion forward In Unishi was disk apparatus, the reference piece is provided at the front of the main chassis, a first of said reference piece, the second
A pinion-facing side surface that opposes the pinion is formed along the forward / backward direction, and a protruding strip is provided along the forward / backward direction on the back surface of the tray so as to face the reference piece. Formed so as to prevent the swinging of the tray by bringing the protruding piece into contact with the pinion-opposing side surface of the reference piece, and only one guide frame protrudes from the center of the back front portion of the tray. A weight is provided in the vicinity of the tray rack at the rear rear portion of the tray.

According to a second aspect of the present invention, a disk mounting tray is disposed so as to be able to move forward and backward in the loader chassis, and a traverse chassis having a turntable and an optical pickup is disposed in the loader chassis so as to be movable up and down. A cam slider is slidably disposed along the left-right direction perpendicular to the forward / backward direction at the front portion of the loader chassis, and the cam slider and the front portion of the traverse chassis are interlocked and connected via a cam mechanism. A cam rack that can mesh with the first pinion is disposed on the cam slider, and a second pinion is formed concentrically and integrally with the first pinion. The second pinion A tray rack that can mesh with the cam slider is formed on the back surface of the tray along the forward / backward direction. And a guide frame with an inclined surface that can be engaged with the guide pin is provided on the rear surface of the tray. In the play mode, the disc is rotated at a high speed by a turntable and recorded on the disc. When the tray is opened, the cam rack is engaged with the first pinion, and the first pinion is rotated forward to slide the cam slider in one direction left and right, and the traverse chassis is moved through the cam mechanism. The disk is moved from the turntable to the tray by lowering it, the guide pin is pressed against the inclined surface of the guide frame and the tray is slightly advanced to engage the tray rack with the second pinion, and the second pinion is moved forward. To a disk device that moves the tray forward through the tray rack by rolling In addition, a reference piece is provided at the front portion of the loader chassis, and a protruding piece is provided on the back surface of the tray so as to face the reference piece. When the tray is moved forward most, the protruding piece is used as a reference piece. The tray is prevented from swinging by contacting the tray.

According to a third aspect of the present invention, in the second aspect of the present invention, only one guide frame projects from the center of the front surface of the back surface of the tray.

The invention according to claim 4 is the invention according to claim 2 or 3, characterized in that a weight is provided in the vicinity of the tray rack at the rear rear portion of the tray.

The invention according to claim 1 corresponds to one embodiment (see FIGS. 1 to 7), and according to this, when the tray is moved forward most, the tray is in the positive position of the second pinion. Even if the tray is pressed in the horizontal direction by the rotational force in the rolling direction, the tray protrudes from the side surface facing the pinion of the reference piece of the loader chassis and resists the pressing force in the horizontal direction. The tray can be moved back and forth linearly with the center axis of the tray aligned with the center axis of the loader chassis without swinging as in the case of noise. Does not occur, and the appearance can be maintained well.

In addition, the guide frame which has been conventionally two on the back surface of the tray is reduced to one, and the front end of the tray becomes lighter by the reduced amount, so that the tray can be smoothly moved forward and backward, It is possible to maintain a good appearance by preventing the tip of the tray from being lowered when the tray is moved forward most.

In addition, since the center of gravity of the tray is moved backward by providing a weight on the back of the back of the tray, the appearance of the tray is improved by preventing the tip of the tray from lowering more reliably when the tray is moved forward most. Can be maintained.

In particular, the weight is provided in the vicinity of the tray rack, and when the tray is moved forward most, the distance from the second pinion to the weight is small, so that it is applied to the weight based on the rotational force caused by the forward rotation of the second pinion. The rotational moment is also reduced, and the protrusion is not excessively pressed against the reference piece, and the tray can be smoothly moved back and forth in a quiet state.

The invention according to claim 2 corresponds to the basic formation, and according to this, when the tray is moved forward most, the tray is moved laterally by the rotational force in the forward rotation direction of the second pinion. Even if pressed, the protruding piece of the tray comes into contact with the side surface facing the pinion of the reference piece of the loader chassis and resists the pressing force in the lateral direction, so the tray does not swing as before, By aligning the center axis of the tray with the center axis of the loader chassis, the tray can be moved back and forth linearly, and no noise is generated when moving back and forth. It can be maintained well.

According to the invention described in claim 3, the guide frame which has conventionally been two on the back surface of the tray is reduced to one, and the front end of the tray becomes lighter by the reduced amount, so that the tray can be smoothly moved. In addition to being able to move forward and backward, the appearance of the tray can be well maintained by preventing the tip of the tray from lowering when the tray is moved forward most.

According to the invention described in claim 4, since the center of gravity of the tray is moved rearward by providing a weight at the rear rear portion of the tray, the tip of the tray is not lowered more reliably when the tray is moved forward most. In this way, the appearance of the appearance can be maintained well.

In particular, the weight is provided in the vicinity of the tray rack, and when the tray is moved forward most, the distance from the second pinion to the weight is small, so that it is applied to the weight based on the rotational force caused by the forward rotation of the second pinion. The rotational moment is also reduced, and the protrusion is not excessively pressed against the reference piece, and the tray can be smoothly moved back and forth in a quiet state.

1 to 7 show a disk apparatus according to an embodiment of the present invention. FIG. 1 is a plan view showing the same play mode state, FIG. 2 is a longitudinal sectional view thereof, and FIG. 4 is a partially cutaway plan view showing the state, FIG. 4 is a rear perspective view of the tray, FIG. 5 is an enlarged perspective view of the vicinity of the reference piece and the protruding piece, and FIG. 6 is an enlarged perspective view of the vicinity of the weight. FIG. 7 is a schematic plan view of a tray showing the action of the same weight.

As shown in FIGS. 1 to 5, an oval reference piece 25 in plan view is integrally provided on the front plate portion 2 a of the loader chassis 2, and the first and second pinions 13, 15 is formed along the forward and backward a and b directions, and the protruding piece 26 that abuts or approaches the pinion opposed side surface 25a is moved back and forth over the substantially entire length of the tray 1 over the entire length. It is integrally projected along the b direction.

Since the play mode, tray open operation, and tray in operation are substantially the same as those in the conventional example (see FIGS. 8 to 11), description thereof is omitted.

According to the above configuration, the tray 1 is moved forward from the tray-in state (see the solid lines in FIGS. 1 and 2).
As a result, the protrusion 26 is moved along the pinion-opposing side surface 25a of the reference piece 25, and when the tray 1 is moved forward most a as shown in FIG. Roll
Even if the ridge piece 26 is pressed in the horizontal direction by the rotational force F in the direction, the tray 1 is in contact with the pinion-opposing side surface 25a of the reference piece 25 and resists the pressing force in the horizontal direction. (See FIG. 10), the central axis O2 of the tray 1 is replaced with the central axis O1 of the loader chassis 2.
, The tray 1 can be linearly moved forward and backward a and b.
In the case of b, noise does not occur as in the conventional case, and the appearance can be maintained well.

As shown in FIG. 3, only one guide frame 18 protrudes from the center of the front portion of the back surface of the tray 1, and correspondingly, only one guide pin 17 protrudes from the center of the cam slider 10.

According to the above configuration, there are two guide frames 18 on the back surface of the tray 1 in the related art (see FIG. 10).
Is reduced to one, and the front end of the tray 1 becomes lighter by the reduced amount.
Can be smoothly moved back and forth a and b, and the appearance of the appearance can be maintained well so that the front end of the tray 1 is not lowered when the tray 1 is moved forward a. reference).

As shown in FIGS. 4 and 6, the cylindrical shaft 2 is disposed in the vicinity of the tray rack 16 at the rear rear portion of the tray 1.
8 is integrally projected, and a pair of slits 29 are provided on the cylindrical shaft 28 at a predetermined interval along the circumferential direction.
A hook 31 is integrally projected on the outer peripheral surface of the tip of the elastic piece 30 left between the slits 29, and has a predetermined weight (for example, 10 g) for moving the center of gravity of the tray 1 to the rear of the tray 1. A ring-shaped weight 32 is used. When the center hole 32a of the weight 32 is fitted to the cylindrical shaft 28 to elastically displace the elastic piece 30, and the hook 31 is engaged with the weight 32, the weight 32 is Locked to the tray rack 16.

According to the above configuration, since the center of gravity of the tray 1 is moved rearward by providing the weight 32 at the rear rear portion of the tray 1, the front end of the tray 1 is not lowered more reliably when the tray 1 is moved forward a. In this way, the appearance of the appearance can be maintained well.

The phantom line in FIG. 7 shows a reference example. When the weight 32 is provided at a position away from the tray rack 16, the weight is moved from the second pinion 15 when the tray 1 is moved forward a. 32
Since the distance L1 is large, the weight 3 based on the rotational force F due to the forward rotation g of the second pinion 15
The rotation moment Ma applied to No. 2 becomes large, and the protruding piece 26 is excessively pressed against the reference piece 25, so that an unpleasant contact sound is generated or it is difficult to smoothly move the tray 1 forward and backward a and b. There is a risk of becoming.

On the other hand, according to one embodiment of the present invention, as shown by a broken line in FIG. 7, the weight 32 is provided in the vicinity of the tray rack 16, and when the tray 1 is moved forward most a, 2 pinions 1
Since the distance L2 from 5 to the weight 32 is small, the rotational moment Mb applied to the weight 32 on the basis of the rotational force F due to the forward rotation g of the second pinion 15 is also small.
Thus, the tray 1 can be smoothly moved back and forth a and b in a quiet state without being excessively pressed against the head 5.

It is a top view which shows the play mode state in the disc apparatus which is one Embodiment of this invention. It is the longitudinal cross-sectional view. It is a partially notched top view which shows the tray open state. It is a back surface side perspective view of the tray. It is an expansion perspective view of the vicinity of the reference | standard piece and a protrusion piece. It is an expansion perspective view of the vicinity of the same weight. It is a schematic plan view of the tray which shows the effect | action of the same weight. It is a top view which shows the play mode state in a prior art example. It is the longitudinal cross-sectional view. It is a partially notched top view which shows the tray open state. It is a back surface side perspective view of the tray.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tray 2 Loader chassis 3 Traverse chassis 6 Turntable 8 Optical pickup 10 Cam slider 11 Cam mechanism 13 First pinion 14 Cam rack 15 Second pinion 16 Tray rack 17 Guide pin 18 Guide frame 18a Inclined surface of guide frame 25 Reference piece 25a Reference piece Side face of pinion 26 Projection piece 32 Weight D Disk

Claims (4)

A disc loading tray is arranged in the loader chassis so that it can move forward and backward, a traverse chassis equipped with a turntable and an optical pickup is arranged in the loader chassis so that it can move up and down, and a cam slider is placed in the front part of the loader chassis. The cam slider and the front part of the traverse chassis are interlocked and connected via a cam mechanism, and the first pinion rotates forward and backward in the front part of the loader chassis. A cam rack that is arranged to be engageable with the first pinion is provided on the cam slider;
A second pinion is concentrically integrated with the first pinion, a tray rack that can be meshed with the second pinion is formed along the back and forth direction of the tray, and a guide pin projects from the cam slider. In addition, a guide frame with an inclined surface that can be engaged with the guide pin protrudes from the back surface of the tray, and in the play mode, the disc is rotated at high speed by a turntable, and information recorded on the disc is displayed. By reading with an optical pickup, when the tray is opened, the cam rack is engaged with the first pinion, the first pinion is rotated forward, the cam slider is slid in one direction left and right, and the traverse chassis is moved downward via the cam mechanism. Move the disc from the turntable onto the tray, and press the guide pin against the inclined surface of the guide frame. In the disk device in which the tray rack is engaged with the second pinion by slightly advancing the tray and the tray is advanced through the tray rack by rotating the second pinion forward, a reference is provided at the front of the loader chassis. A piece is provided, and a pinion-facing side surface facing the first and second pinions of the reference piece is formed along the forward / backward direction, and is opposed to the reference piece along the forward / backward direction on the back surface of the tray. And the guide frame is formed so as to prevent the tray from swinging by abutting the protrusion piece against the pinion-opposing side surface of the reference piece when the tray is moved forward most. A disk device characterized in that only one protrusion is provided at the center of the front part of the rear surface of the tray, and a weight is provided in the vicinity of the tray rack at the rear part of the rear surface of the tray. A disc loading tray is arranged in the loader chassis so that it can move forward and backward, a traverse chassis equipped with a turntable and an optical pickup is arranged in the loader chassis so that it can move up and down, and a cam slider is placed in the front part of the loader chassis. The cam slider and the front part of the traverse chassis are interlocked and connected via a cam mechanism, and the first pinion rotates forward and backward in the front part of the loader chassis. A cam rack that is arranged to be engageable with the first pinion is provided on the cam slider;
A second pinion is concentrically integrated with the first pinion, a tray rack that can be meshed with the second pinion is formed along the back and forth direction of the tray, and a guide pin projects from the cam slider. In addition, a guide frame with an inclined surface that can be engaged with the guide pin protrudes from the back surface of the tray, and in the play mode, the disc is rotated at high speed by a turntable, and information recorded on the disc is displayed. By reading with an optical pickup, when the tray is opened, the cam rack is engaged with the first pinion, the first pinion is rotated forward, the cam slider is slid in one direction left and right, and the traverse chassis is moved downward via the cam mechanism. Move the disc from the turntable onto the tray, and press the guide pin against the inclined surface of the guide frame. In the disk device in which the tray rack is engaged with the second pinion by slightly advancing the tray and the tray is advanced through the tray rack by rotating the second pinion forward, a reference is provided at the front of the loader chassis. A strip is provided on the back surface of the tray so as to face the reference piece. When the tray is moved forward most, the protrusion is brought into contact with the reference piece to swing the tray. A disk device characterized by preventing the above-mentioned problem. 3. The disk device according to claim 2, wherein only one guide frame protrudes from the center of the front part of the rear surface of the tray. 4. The disk device according to claim 2, wherein a weight is provided in the vicinity of the tray rack at the rear rear portion of the tray.

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