JP2002230955A - Tray loading device for disk medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem existing heretofore that rotational drive is transmitted to a tray and the tray generates an uncomfortable vibration sound when a disk medium is placed on the tray, conveyed to a prescribed position, and rotationally driven. SOLUTION: This tray loading device for the disk media is provided with a flange 38 having a U-shaped groove at a front end 24 in the loading direction of the tray 11 for conveying the disk medium 31 to a prescribed position and is provided with a columnar boss 38 having a head of a conical surface 38f at a casing 35 having a driving source and driving means which are mounted with the tray 11 and drive the tray 11 and the disk medium 31. The device regulates the position in the transverse direction of the tray 11 and eliminates the uncomfortable vibrations of the tray by fitting the U-shaped groove of the flange 38 to the columnar boss 38 when the tray 11 is conveyed and loaded to a prescribed position of the casing 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray loading apparatus for a disk medium, which stores a disk medium such as a CD or a DVD in a tray and transports the disk medium together with the tray to a predetermined position.

[0002]

2. Description of the Related Art In recent years, information recording capacity is large,
Disc media called CDs and DVDs have been put to practical use because high-quality information can be obtained during reading and reproduction.

In this disk medium, digitized information is recorded on a disk-shaped disk, and information is read by detecting reflected light of a laser beam projected on an information recording surface.

[0004] In a disk medium reproducing apparatus for reading and reproducing information recorded on the disk medium, a tray on which the disk medium is placed and conveyed into the apparatus, and a disk medium conveyed by the tray are rotationally driven. A turntable, an optical pickup that is movable in a radial direction of a disk medium that is rotationally driven by the turntable, projects an information reading laser beam onto an information recording surface, and captures reflected light; It is composed of a digital signal generation circuit and the like for generating a digital information signal from the captured reflected light.

[0005] In the disk media reproducing apparatus, the tray on which the disk media is placed is transported to a predetermined position by a transport loading mechanism. The disk medium conveyed to a predetermined position by the tray is placed on a turntable arranged at a corresponding position, and is rotated at a constant speed by a motor that rotates the turntable.

[0006] The disk medium placed on the turntable and driven to rotate is configured to be in non-contact with the tray.

[0007]

In a conventional disk media reproducing apparatus, a disk medium is placed on a tray, transported to a predetermined position in a housing of the reproducing apparatus, and then turned into a turn. The table is lifted, and the disk medium is placed on the turntable. The disk medium placed on the turntable is rotated at a constant speed by rotation of a motor that drives the turntable.

When the turntable motor is driven and rotated, rotational vibration of the motor is transmitted from the housing to the tray, and a vibration sound is generated between the housing and the tray.

This vibration noise is generated due to a mounting error when the tray is mounted on the housing, and a slight gap provided for quickly carrying the tray into the housing.

For this reason, in a state where the tray is conveyed and loaded at a predetermined position of the housing, a spring member for absorbing horizontal or vertical vibration is provided between the housing and the tray in addition to regulating the position of the tray. It is provided between them.

The structure in which the horizontal and vertical vibrations of the tray are absorbed by such a spring member causes an increase in the number of components constituting the reproducing apparatus, an increase in assembling work time, and an increase in cost. there were.

According to the present invention, the position of the tray is regulated when the disk medium is conveyed to a predetermined position of the housing by the tray, and the vibration generated between the housing and the tray when the turntable is driven to rotate. It is an object of the present invention to provide a tray loading device for disc media capable of eliminating sound.

[0013]

According to the present invention, there is provided a tray loading apparatus for a disk medium having a storage section for storing and mounting the disk medium, and moving the disk medium stored in the storage section to a predetermined position in a housing. A tray provided so as to be able to be provided, a flange provided on the tray, formed of an elastic body having a U-shaped groove at a tip end, and a flange provided on the housing, wherein the tray is located at the predetermined position. At that time,
A cylindrical boss that elastically fits into the U-shaped groove of the flange.

The groove of the flange of the tray loading device for a disk medium according to the present invention is formed in a V-shape.

The cylindrical boss of the tray loading apparatus for a disk medium of the present invention is characterized in that it is a cylindrical boss standing from the bottom of the housing, and has a conical surface with which the groove of the flange fits in the head. And

Further, the flange of the tray loading device for a disk medium according to the present invention is characterized in that the flange has an inclined surface which is fitted and in contact with the conical surface of the cylindrical boss.

Further, the disk medium tray loading device of the present invention has a housing having a bottom surface and a storage portion for storing and mounting the disk medium, and is engaged with a guide mechanism provided in the housing. A tray provided so as to be able to move the disk medium stored in the storage portion to a predetermined position in the housing while maintaining a distance from the bottom surface, and a U-shaped groove provided at the tip end of the tray. A flange formed of an elastic body having, provided on the bottom surface of the housing,
When the tray is located at the predetermined position, the tray elastically fits into the U-shaped groove of the flange to regulate the position of the tray in a direction parallel to the bottom surface of the housing, and And a columnar boss for suppressing displacement in the vertical direction.

According to the present invention, the horizontal regulation of the tray of the tray loading device for the disk media and the elimination of the vibration noise can be realized, and the cost of the disk media reproducing device can be reduced.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a disc medium tray loading apparatus according to the present invention, and FIG. 2 is a plan view showing a state in which a tray of the disc medium tray loading apparatus according to the present invention is transported to a predetermined position. FIG. 3 is an explanatory view showing the relationship between the flange provided on the tray of the tray loading device for disk media according to the present invention and the columnar boss provided on the housing.

Referring to FIG. 1, the configuration of the disc medium tray loading device of the present invention will be described. Tray 11
A flat portion 12 provided with a concave portion 14 forming a storage portion in which a disk medium (hereinafter, referred to as a disk) is mounted; and a tray guide (not shown) formed on a housing 35 at both ends of the flat portion 12. It comprises side portions 13a and 13b having grooves (not shown) formed so as to be fitted to the rails, and has a substantially U-shaped cross section.

The tray 11 is mounted in the housing 35 from a tray insertion opening (not shown) provided in the housing 35 in a loading direction indicated by an arrow L in the figure.
a, 13b is fitted to a rail provided on the bottom surface 37 of the housing 35,
It is incorporated into the housing 35. At this time, the side surface 1 of the tray 11 is provided inside the side surfaces 36a and 37b of the housing 35.
3a, 13b, and projections 36c, 36c for keeping the tray 11 always fitted to the rail of the housing 35.
36d are formed.

Accordingly, the tray 11 is moved between a position where the disk can be stored and removed from the recessed portion 14 drawn out of the housing 35 and a position where the stored disk can be placed on the turntable. You will be guided freely. The tray 11 is transported by transmitting a driving force from a tray transport drive source (not shown) to the tray 11 by a driving mechanism, so that the tray 11 is transported along the rails into the housing 35. Is configured.

An arrow M in the drawing of the flat portion 12 of the tray 11
At the end in the unloading direction side indicated by a front part, when the tray 11 is conveyed into the housing 35, it fits into the tray insertion opening of the housing 35 and seals the tray insertion opening. 15 are provided.

The concave portion 14 provided in the flat portion 12 of the tray 11 is formed in a circular shape having an inner diameter larger than the diameter of the disk, and a first arc portion 16a is provided near the front portion 15 side. A second arc portion 16b is formed on the loading side, and a first and second notch portion 17a is formed in a portion where the first and second arc portions 16a and 16b are in contact with both side portions 13a and 13b. , 17b are formed.

The first and second arc portions 16a and 16b are formed with inclined portions 18a and 18b having surfaces inclined toward the bottom surface of the concave portion 14. This inclined part 1
The reference numerals 8a and 18b are provided to allow the disc 31 to slide under its own weight into the recess 14 when the disc 31 is placed.

The recess 14 is formed to be substantially the same as or slightly larger than the outer periphery of the loaded disk.

The semicircular portion 1 is located at the center of the recess 14.
An opening 19 composed of a semicircular portion 9a and a rectangular portion 19b extending from the semicircular portion and having a diameter width in the direction of arrow L is provided. The semicircular portion 19a of the opening 19 penetrates a disc turntable (not shown) that fits into a turntable fitting hole provided in the center portion of the disc 31. A pickup is provided for projecting a laser beam onto the disk while moving in a radial direction of the disk.

Both ends of the first and second arc portions 16a and 16b of the recess 14 and the first and second notches 17 are provided.
Projections 20a, 20b, 20c, and 20d are provided at positions corresponding to the positions where both ends of a and 17b are in contact with each other. The protrusions 20a to 20d are provided when the tray 11 is arranged vertically so that the surface of the concave portion 14 is vertical.
When the disc is stored in the recess 14, for example, the protrusion 20
b, 20d, by guiding the end of the disk so as to be separated from the surface of the concave portion 14, the protrusion 2
The end on the side of 0a, 20c falls to the side of the concave portion 14, and as a result, it is provided to regulate the disk so as not to come off from the concave portion 14 during storage.

Further, the first and second portions of the first circular arc portion 16a
First claw portions 21a and 21b projecting from the flat portion 12 toward the concave portion 14 are provided at positions near the notches 17a and 17b, and similarly, the first and second notches of the second arc portion 16b are provided. Near the portions 17a and 17b, second claw portions 22a and 22b projecting from the flat portion 12 toward the concave portion 14 are provided. The first claw portions 21a and 21b and the second claw portions 22a and 22b prevent the disk from jumping out of the concave portion 14 or falling off when the disk is mounted in the concave portion 14. Further, the first and second claw portions 2
The tips of 1a, 21b, 22a, and 22b extend toward the concave portion 14 so as not to come into contact with the outer periphery of the disc when the disc is sandwiched between a clamper (not shown) and a turntable.

The arrow L in the drawing of the flat portion 12 of the tray 11
A flange 25a, 2 having a U-shaped groove opened in the loading direction
5b is provided symmetrically with respect to the horizontal center line XX in the figure.

The flanges 25a and 25b have both sides,
Cut grooves 26a and 26b are formed, and have bending elasticity in the front and back directions in the figure.

The tray 11 having such a configuration is formed integrally with a synthetic resin or the like, and is mounted on the housing 35. Although not shown, a rack gear (not shown) parallel to the center line XX in the figure is provided on the back surface of the tray 11, and the side surfaces 13a and 13b have sliding guide grooves as described above. Is provided.

The housing 35 is formed in a substantially rectangular box shape, and has a bottom surface 37 near both side surfaces 36a and 36b.
Although not shown, the side portion 13 of the tray 11
Rails that fit into the sliding guide grooves provided in the a and 13b are provided in parallel with the XX center line in the figure.

The bottom surface 37 of the housing 35 is provided with a loading motor and a pinion gear for transmitting the rotation of the loading motor to a rack gear provided on the back surface of the tray 11. A turntable having a motor for rotating and driving a disk placed on the tray 11, an optical pickup for projecting a laser beam for reading information while moving in a radial direction of the disk, and the loading motor; A turntable motor, a motor drive circuit for driving and controlling a motor for moving the optical pickup, and the like are provided. Further, an optical pickup control circuit for projecting a laser from the optical pickup and receiving reflected light from a disk is provided.

The U-shaped grooves of the flanges 25a and 25b of the tray 11 fit into the bottom surface 37 of the housing 35 when the tray 11 is conveyed and loaded to a predetermined position of the housing 35. The columnar bosses 38a and 38b are planted. The columnar bosses 38a, 38b are
7 has a diameter larger than the width of the U-shaped groove of the flanges 25a and 25b, and has a conical surface 3 on the head.
8e and a small diameter cylindrical portion 38f. The U-shaped grooves of the flanges 25a and 25b are configured to fit into the conical surfaces 38e of the heads of the cylindrical bosses 38a and 38b.

That is, the tray 11 is mounted on the housing 35
When the loading motor is driven in a state where the tray 11 is incorporated, the tray 11 is conveyed and loaded in a loading direction indicated by an arrow L in the drawing. When the tray 11 is transported to a predetermined position of the housing 35 in which the stored disk 31 can be mounted on the turntable, FIG.
The flanges 25a and 25b fit into the conical surfaces 38e of the cylindrical bosses 38a and 38b as shown in FIG. At this time, since the side surface portions 13a and 13b of the tray 11 abut on the protrusions 36c and 36d on the side surface of the housing 35, the interval between the tray 11 and the bottom surface 37 of the housing 35 does not change any more. Only 25b is elastically deformed.

FIG. 2 shows that the disc 3
1 shows a state where the flanges 25a, 25b and the columnar bosses 38a, 38b are fitted when the tray 11 on which the tray 1 is placed is conveyed and loaded into a predetermined position of the housing 35.

After the tray 11 is conveyed and loaded at a predetermined position of the housing 35, the turntable motor and the optical pickup are driven to read the information recorded on the disk 31.

When the information reading from the disk 31 is completed and the disk 31 is taken out, the disk 31 and the turntable are uncoupled and the disk 31
4, the loading motor is driven to rotate in the reverse direction, and the tray 11 is conveyed and loaded in the unloading direction indicated by the arrow M in the drawing to a position where the user can mount and dismount the disc 31 in the recess 14.

Next, the relationship between the flanges 25a and 25b and the columnar bosses 38a and 38b will be described with reference to FIG. In this embodiment, the flange 25a,
25b and the columnar bosses 38a, 38b have the same shape and the same function.
And a columnar boss 38. FIG. 3A is a plan view showing the relationship between the flange 25 and the columnar boss 38 in the unloading state. FIG. 3B is a plan view showing the relationship between the flange 25 and the columnar boss 38 in the unloading state. FIG. 3C is a plan view showing the relationship between the flange 25 and the cylindrical boss 38 in the loading state.
(D) is a side view showing the relationship between the flange 25 and the cylindrical boss 38 in the loading state.

As shown in FIGS. 3B and 3D, the lower surface of the flange 25 is provided with an inclined surface 25e. When the flange 25 is moved in the loading direction indicated by the arrow L, the U-shaped groove of the flange 25 is fitted to the conical surface 38e as shown in FIG. 3 (c, d). The inclined surface 25e of the flange 25 is pushed up by the conical surface 38e of the cylindrical boss 38 in the direction indicated by the arrow Z in the figure. Due to the elasticity of the flange 25 pushed up by the conical surface 38e of the cylindrical boss 38, the flange 25 and the conical surface 38e are closely fitted.

By tightly fitting the flange 25 and the conical surface 38e of the cylindrical boss 38, the tray 11
Vibrates in the direction of arrow Z in the figure, the flange 2
Vibration is absorbed by the elasticity of No. 5. In addition, the flange 2
5 is fitted in the conical surface 38e of the cylindrical boss 38 so that the leading end 24 of the tray 11 is moved in the lateral direction (FIG. 1).
Alternatively, the position can be regulated in the Y-Y direction in FIG.

That is, when the disk 31 is placed on the tray 11 and transported by a loading function to a predetermined position of the housing 35, the flange 2 of the tray 11
The U-shaped grooves 5a and 25b are fitted into the conical surfaces 38e of the cylindrical bosses 38a and 38b provided on the housing 35, and the position is regulated in the YY direction in the figure, whereby the turntable is formed. When the motor is driven to rotate the disk 31, the vibration transmitted to the tray 11 by the rotation drive of the turntable motor is applied to the casing 35.
Is absorbed by the elasticity of the flanges 25a, 25b fitted to the conical surfaces 38e of the cylindrical bosses 38a, 38b, thereby preventing generation of unpleasant vibration noise.

The columnar bosses 38a of the housing 35,
The flanges 25a, 25b of the tray 11 fitted to the conical surface 38e of the tray 38b have been described using an example in which a U-shaped groove is provided, but the flanges 25a, 25b are formed by the cones of the cylindrical bosses 38a, 38b. A groove other than the U-shape, for example, a V-shape, may be used as long as the groove can be pushed up along the inclined surface of the surface 38e.

The flanges 25a and 25b do not necessarily have to have exactly the same size and shape, and similarly, the columnar bosses 38a and 38b do not need to have exactly the same size and shape. Further, the flanges 25a and 25b and the cylindrical boss 3
The positions where the 8a and 38b are provided need not be symmetrical with respect to the center line XX of the tray, and can be variously configured without departing from the spirit of the invention.

[0046]

According to the present invention, a flange provided on a tray,
When the tray is conveyed and loaded to a predetermined position by the columnar boss provided on the housing, it is possible to easily eliminate the unpleasant vibration sound of the tray by the drive motor and to regulate the position of the tray in a direction perpendicular to the loading direction. Has an effect.

[Brief description of the drawings]

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

FIG. 2 is a plan view showing a state in which the tray of the tray loading device for a disk medium according to the present invention is conveyed to a predetermined position and conveyed;

3 (a) is a plan view showing a relationship between a flange and a cylindrical boss in an unloaded state, and FIG. 3 (b) is a view for explaining the operation of the tray loading apparatus for disk media according to the present invention. FIG. 3C is a side view showing the relationship between the unloaded flange and the cylindrical boss, FIG. 3C is a plan view showing the relationship between the loaded flange and the cylindrical boss, and FIG. 3D is the loaded flange. FIG. 4 is a side view showing the relationship between the boss and a cylindrical boss.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Tray, 12 ... Flat part, 13 ... Side part, 14 ... Concave part, 15 ... Front part, 16 ... Arc part, 17 ... Notch part, 18
... Slope part, 19 ... Opening, 20 ... Protrusion, 21 ... First claw part,
22: second claw portion, 23: third claw portion, 24: tip portion, 25
... Flange, 26 ... Cut groove, 31 ... Disk, 35
... housing, 36 ... side surface, 37 ... bottom surface, 38 ... cylindrical boss.

Claims (5)

[Claims] A tray provided with a storage portion for storing and mounting the disk medium, the tray being provided to be able to move the disk medium stored in the storage portion to a predetermined position in a housing; A flange formed of an elastic body having a U-shaped groove in a portion, provided on the housing, and when the tray is located at the predetermined position, the flange is elastically connected to the U-shaped groove of the flange. A disk loading tray for a disk medium, comprising: a cylindrical boss to be fitted; 2. The apparatus according to claim 1, wherein the groove of the flange is formed in a V-shape. 3. The cylindrical boss according to claim 1, wherein the cylindrical boss is a cylindrical shape erected from a bottom surface of the housing, and has a conical surface in which a groove of the flange fits into a head. A tray loading device for a disk medium according to the above. 4. The tray loading device for a disk medium according to claim 1, wherein the flange has an inclined surface that fits into contact with the conical surface of the cylindrical boss. 5. A housing having a bottom surface, and a storage portion for storing and mounting a disk medium, wherein the storage portion is engaged with a guide mechanism provided in the housing while maintaining an interval with the bottom surface. A tray provided so as to be able to move the disk medium stored in the unit to a predetermined position in the housing; and a flange provided on the tray and formed of an elastic body having a U-shaped groove at a tip end. A direction parallel to the housing bottom surface of the tray, provided on the bottom surface of the housing and elastically fitted into the U-shaped groove of the flange when the tray is located at the predetermined position; And a column-shaped boss for restricting the position of the tray and suppressing displacement of the tray in the vertical direction with respect to the bottom surface of the casing.