JP3585390B2 - Disk unit - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disk device, and more particularly, to a disk loading mechanism in a disk device such as a CD and a DVD.
[0002]
[Prior art]
2. Description of the Related Art Known documents relating to a disk loading mechanism for loading and unloading a disk into and from a device include, for example, those disclosed in JP-A-9-185860 and JP-A-9-293306.
FIG. 4 is a perspective view of an essential part for explaining an example of a conventional disk device. As disclosed in the above-mentioned Japanese Patent Application Laid-Open No. Hei 9-185860, as shown in FIG. 4, the loading and unloading of a disc into and from the apparatus is performed by auto-loading. For example, three types of discs (not shown) having different sizes are placed on the tray 16 and set at the reproducing position. Conveyed. The size of the disc can be 30 cm, 20 cm, or 12 cm in diameter.
[0003]
In order to move the tray 16, a rack portion 16a is provided on the side surface of the tray 16 along the moving direction and over substantially the entire length, and a gear 19 meshing with the rack portion 16a is rotated by a motor or the like. It is supposed to be. Concentric concave portions 16b, 16c, 16d having an arcuate outer shape are formed on the disk carrying surface of the tray 16 with predetermined steps so as to be able to accommodate the above-mentioned disks. In a direction substantially perpendicular to the direction in which the tray 16 protrudes, an arc-shaped external concave portion is formed by cutting.
[0004]
In the player housing 17, a turntable 20 as a first pressing member is provided so that its disk carrying surface faces downward. The turntable 20 is placed on the tray 16 and is parallel to the disk carrying surface of the turntable 20. Each disc housed in the player housing 17 in the direction is located immediately below the disc carrying surface of the turntable 20 at a predetermined interval.
[0005]
The disk that has reached just below the turntable 20 is separated from the tray 16 by being lifted upward by the disk clamp mechanism 21, and is clamped against the disk holding surface of the turntable 20. The disk clamp mechanism 21 is vertically moved, that is, by a disk-shaped pressing member 22 as a second pressing member for contacting the disk and pressing the disk against the disk supporting surface of the turntable 20, and a supporting member 23. A support member 23 rotatably supported in a direction perpendicular to the disk holding surface of the turntable 20 and rotatably supporting the disk-shaped pressing member 22 at a free end; and a drive for swinging the support member 23. Means.
[0006]
A carriage 24 carrying an optical pickup is disposed on the support member 23. The carriage 24 is guided by a guide shaft 25 to move the carriage 24 along the recording surface of the disc mounted on the turntable 20. Drive means for moving the drive 24 are formed.
[0007]
As described above, the tray for loading and unloading the disk into and from the apparatus is formed with an arc-shaped external concave portion corresponding to the size of the disk, so that the workability at the time of loading the disk is improved, and the tray at the time of moving the tray is improved. A method has been provided which enables prevention of disk displacement.
[0008]
5A and 5B are diagrams for explaining another example of the disk device according to the related art. FIG. 5A is a plan view, and FIG. 5B is a view taken along the line BB of FIG. 5A. is there.
Japanese Patent Application Laid-Open No. 9-293306 discloses that a disk is loaded and unloaded to and from the apparatus by a loading mechanism as shown in FIG. A tray body 31 that is horizontally driven so that the front surface of the housing and the inside of the housing can be drawn out and stored through a front opening of the optical disk drive device housing, and a pivot 26 that is erected on the back side of the upper surface of the tray body 31 One end is pivotally supported by the pivot 26 so as to be openable and closable, and the holding groove 27 is formed so as to face the peripheral edge 29 of the disk 32 in the thickness direction from the one end to the other end. And a coil spring 30 wound around the pivot 26 to attract and bias the pair of clamp arms 28 to each other. 29 is inserted between the holding grooves 27 of the pair of clamp arms 28 on the upper surface of the tray body 31 while pushing and expanding the pair of clamp arms 28, and the disc 32 is gripped between the holding grooves 27 of the pair of clamp arms 28. Then, the loading mechanism is driven to house the tray main body 31 in the disk device housing.
[0009]
[Problems to be solved by the invention]
However, in the above-described conventional disk storage method, it is necessary to form three types of concave portions having an arcuate outer shape in the tray main body and to attach a clamp arm to the tray main body. As described above, the tray main body has a certain thickness. It is necessary, and it has not been possible to reduce the thickness and weight of the entire apparatus.
[0010]
The present invention has been made in consideration of the above-described circumstances, and is different from a conventional drawer storage method in storing a disk in a disk device. It is an object of the present invention to provide a disk device capable of reducing the thickness and weight of the device by using a moving storage method.
[0011]
[Means for Solving the Problems]
According to a first aspect of the present invention, in a disk device having a disk holding means for holding a disk, and loading and unloading the disk by the disk holding means, the disk holding means has a range narrower than a half circumference of the disk peripheral portion. three disks abutment support member so as to contact has a disc holding portion of the disposed a circular arc shape, one of the disc contacting the support member abuts against the upper surface of the disc, the remaining 2 The two disk contact support members are in contact with the lower surface of the disk.
[0012]
According to a second aspect of the present invention, in the disk device according to the first aspect, the disk holding portion includes a disk support member having one disk contact support member abutting on a lower surface of the disk, and an upper surface of the disk. consists other disk support members that have a remaining two of the disks contact supporting member abutting against the lower surface, a plurality of said disk support member are coupled by the coupling shaft, and is urged by a biasing means Thus, an arc having an outer diameter larger than the outer shape of the disk is formed.
[0014]
According to a third aspect of the present invention, in the disk device according to the second aspect , a disk guide projection having a truncated cone shape is provided, and a disk elevating means for raising and lowering the disk in conjunction with the rotation of the disk holding means is provided. The disk lifting means may hold the disk by fitting the disk guide projection into the center hole of the disk in conjunction with the operation of rotating the disk holding means to a predetermined position. It is a characteristic.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 to 3 are main part configuration diagrams for explaining one embodiment of a disk drive according to the present invention. FIG. 1A is a plan view showing a state at the time of starting removal or loading of a disk. 2 (B) is a front view thereof, FIG. 2 (A) is a plan view showing a state during the operation of taking out or loading a disk, FIG. 2 (B) is a front view thereof, and FIG. FIG. 3B is a plan view showing the state, and FIG.
[0018]
As shown in FIG. 1, the loading arm 5 and the loading sub-arm 6 are pivotally supported by a shaft 5a in order to abut and support the disk 4, and the loading sub-arm 6 is biased against the loading arm 5. It is biased by a spring 7. The loading sub-arm 6 is rotated by the biasing spring 7 about the shaft 5a, and one end of the loading sub-arm 6 abuts on the stopper 5c and is locked. Thus, an arc having an outer diameter slightly larger than the outer diameter of the disk 4 is formed.
[0019]
The contact support members 5d and 6a support the lower surface of the disk 4, and the contact support member 5e receives the upper surface of the disk 4, whereby the disk 4 is held at a predetermined position in relation to the center of gravity of the disk 4 itself. It has become so. One end of the loading arm 5 is rotatably attached to an arm shaft 14 planted on a base (not shown), and has a partial gear 5b formed integrally therewith. The gear 8, the pulley gear 9, the belt 10, the pulley 11, and the drive motor 12, which are reduction drive systems, are rotationally connected. When the drive motor 12 rotates counterclockwise in the drawing, the disk holding member including the loading arm 5, the loading sub arm 6, and the biasing spring 7 rotates counterclockwise.
[0020]
When the disk 4 comes close to a predetermined position where the disk can be loaded into the mechanical assembly 1, the panel cover 15 rotates in the R direction in conjunction with the panel cover 15 to rotate the panel holding member to the front of the apparatus. The opening closes.
[0021]
As shown in FIG. 2, the mechanical assembly 1 is rotated counterclockwise in FIG. 2 by the slide cam 13 interlocked with the deceleration drive system (the interlocked mechanism is not shown), with the support shaft 1b as the rotation axis. The disc 4 that has come to a predetermined position is picked up from below, and the center hole of the disc 4 is guided and locked on the turntable 1a having a disc guide projection having a truncated cone shape. When the mechanical assembly 1 is further rotated, a clamper 3 rotatably mounted on the top plate 2 and movably in the vertical direction holds the disc 4 firmly and is integrated with the turntable 1a. It is adapted to rotate (see FIG. 3).
[0022]
As shown in FIG. 3, the disk holding member including the loading arm 5, the loading sub arm 6, and the biasing spring 7 continues to rotate further, and the release pin 2 a implanted in the top plate 2 is moved to the end of the loading sub arm 6. The contact of the portion 6b causes the loading sub-arm 6 to rotate about the shaft 5a so as to press the urging spring 7, whereby the contact support members 5d, 5e, 6a are separated from the disk 4, and The disk holding member releases the disk 4. The operation for removing the disk 4 is the reverse of the above description.
[0023]
【The invention's effect】
As is apparent above description or al, according to the present invention, the body portion of the tray that can be thin, the overall thickness of the device, the weight reduction is achieved, the supporting disk and disk storage is rotated Due to the formula, the guide holding part which goes out of the apparatus for loading the disk looks small and simple.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining an embodiment of a disk device according to the present invention, and is a main part configuration diagram showing a state where a disk is taken out or loaded.
FIG. 2 is a main part configuration diagram showing a state in which a disk is being taken out or loaded in the embodiment shown in FIG. 1;
FIG. 3 is a main part configuration diagram showing a state of the embodiment shown in FIG. 1 when the loading of the disk is completed.
FIG. 4 is a perspective view of an essential part for explaining an example of a conventional disk device.
FIG. 5 is a main part configuration diagram for explaining another example of a conventional disk device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mechanical assembly, 1a ... Turntable, 1b ... Support shaft, 1c ... Cam follower pin, 2 ... Top plate, 2a ... Release pin, 3 ... Clamper, 4, 32 ... Disc, 5 ... Loading arm, 5a ... Shaft, 5b: partial gear, 5c: stopper, 5d, 5e, 6a: contact support member, 6: loading sub arm, 6b: end of loading sub arm, 7: biasing spring, 8: gear, 9: pulley gear, 10: belt , 11 ... pulley, 12 ... drive motor, 13 ... slide cam, 14 ... arm shaft, 15 ... panel cover, 16 ... tray, 16a ... rack part, 16b, 16c, 16d ... arc-shaped outer concave part, 17 ... player housing, 18 guide rail, 19 gear, 20 turntable, 21 disk clamp mechanism, 22 disk-shaped pressing member, 23 support member, 24 carriage 5 ... Guide shaft, 26 ... pivot, 27 ... Tsutsumijimizo, 28 ... clamp arm, 29 ... disk periphery, 30 ... coil spring, 31 ... tray body.

Claims (3)

In a disk device having a disk holding means for holding a disk, and loading and unloading the disk by the disk holding means , three disk holding means are provided so as to abut on a narrower area than a half circumference of the disk peripheral portion. An arc-shaped disk holding portion provided with a disk contact support member, one of the disk contact support members abutting on the upper surface of the disk, and the other two disk contact support members A disk device contacting a lower surface of the disk. The disk apparatus according to claim 1, wherein the disc holding portion, and the disc support member having one of the disks contact supporting member abutting the lower surface of the disc, the remaining two abutting the upper and lower surfaces of said disk the disc consists of a another disc support member that have a contact supporting member, a plurality of said disk support member are coupled by a coupling shaft and greater than the outer shape of the disk and is biased by a biasing means A disk device characterized by forming an arc having an outer diameter . 3. The disk drive according to claim 2 , further comprising: a disk guide protrusion provided with a truncated cone-shaped disk guide, and a disk elevating means for moving the disk up and down in conjunction with the rotation of the disk holding means. A disk device for holding the disk by fitting the disk guide projection into a center hole of the disk in conjunction with an operation of rotating the disk holding means to a predetermined position.

Images