JP2002050167A - Mechanism for supporting and fixing disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve vibration proof by the insulator of a disk device. SOLUTION: The required number of insulators 20 are mounted on a base chassis 16 of a disk device 15 by a mounting piece 21, and a positioning receiving part 22 where the insulators 20 are positioned and supported is arranged in a lower half 2a of a main body cabinet 2 as a mechanical deck chassis, and ribs 22b are radially formed from a central shaft 22a so that the insulators 20 can be supported at the positioning receiving part 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a support mechanism for a disk device for supporting and fixing a disk device for recording and / or reproducing data on and from an optical disk using a laser beam on a mechanical deck chassis.

[0002]

2. Description of the Related Art In a disk drive for performing recording and / or reproduction on an optical disk by using a laser beam, it is necessary to prevent transmission of external vibrations in order to reliably perform recording and / or reproduction. Therefore, in order to fix the disk device to the mechanical deck chassis, the disk device is supported and fixed via a rubber insulator as a damper.

[0003]

However, the conventional disk device is fixed to the mechanical deck chassis by pressing a rubber insulator against the surface of the mechanical deck chassis to support the disk device. In this method, however, the insulator is more than necessary. Therefore, the damper effect could not be sufficiently exhibited, and the vibration resistance was not sufficient.

Accordingly, the present invention has been made in view of the above-described circumstances, and has as its object to improve the vibration resistance of an insulator of a disk device.

[0005]

According to the present invention, there is provided a disk drive for recording and / or reproducing data on and from an optical disk using a laser beam, which is supported and fixed to a mechanical deck chassis via an insulator. A support and fixing mechanism for a disk device, wherein a required number of insulators are mounted on a base chassis of the disk device, a positioning receiving portion for positioning and supporting the insulator is provided on the mechanical deck chassis, and a receiving portion on which the insulator is supported by the positioning receiving portion. The portion is provided radially from the central shaft portion.

In the above structure, the receiving portion for supporting the insulator of the positioning receiving portion provided on the mechanical deck chassis may be formed by radial ribs.

In the above configuration, it is preferable that the receiving portion for supporting the insulator of the positioning receiving portion provided on the mechanical deck chassis is formed by a substantially cross-shaped rib.

Further, in the above configuration, the receiving portion for supporting the insulator may be formed integrally with the mechanical deck chassis by casting.

Therefore, in the disk device supporting and fixing mechanism according to the present invention, the insulator supporting the disk device is not directly pressed against the surface of the mechanical deck chassis, but is received by the radial receiving portion of the positioning receiving portion. Is moderately loosened and the damper effect is brought out, so that the vibration-proof characteristics of the insulator of the disk device are improved.

[0010]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. In this embodiment, the present invention is applied to a mounting portion of a disk device in a DVD player. FIG. 1 shows an example of a DVD player to which the present invention is applied, FIG. 2 is an exploded perspective view of a mounting portion of a disc device in the DVD player shown in FIG. 1 on a cabinet chassis side, and FIG. FIG. 4 is a perspective view showing a state where an insulator of a support portion of the disk device shown is removed, and FIG. 4 is a perspective view showing a state where an insulator is attached to the support portion of the disk device.
Shows a perspective view of an example of a mounting portion on the cabinet chassis side, and FIG. 6 shows a cross-sectional view of a state in which the support portion of the disk device is mounted on the mounting portion on the cabinet chassis side.

A DVD player shown in FIG. 1 is a portable portable DVD player. This DVD player 1 has a lid 4 on which a liquid crystal display 3 is disposed in a main body cabinet 2 so that the lid 4 can be opened at a required angle. The cover 4 has a built-in speaker 5 mounted thereon.

The main body cabinet 2 is composed of a lower half 2a as a cabinet chassis and an upper half 2b integrated with the lower half 2a.
A disc housing recess 6 is formed on the upper surface side of b, and a lid 7 for opening and closing the upper surface side of the disc housing recess 6 is attached. By doing so, the upper surface side of the upper half 2b becomes flat.

An operation key 8 and a lid opening button 9 are arranged on the upper surface side of the upper half 2b of the main body cabinet 2, and the front side is extended to the front edge on the bottom side of the lower half 2a so that each operation button 10 is extended. , A power button 11 and a display unit 12 are arranged,
The side of the main body cabinet 2, that is, the lower half 2a
And each input / output jack 1 straddling the side of the upper half 2b.
3 are arranged.

In the main body cabinet 2,
As shown in FIG. 2, a circuit board 14 on which circuit components are mounted is arranged, and a disk device 15 for recording and / or reproducing an optical disk is incorporated.

The disk device 15 includes a base chassis 16 formed in a substantially rectangular frame shape and a turntable 1 rotatably driven by a spindle motor at one end thereof.
An optical pickup device 18 is provided so as to be movable in the direction of contact and separation with the turntable 17. The optical pickup device 18 performs recording and / or reproduction of an optical disk by using a laser beam. The optical disk is chucked by the turntable 17 and is rotated and driven orthogonally to the optical disk by a two-axis actuator. The laser beam emitted from the semiconductor laser is irradiated through an objective lens driven in a focusing direction in a direction in which the optical disk moves and a tracking direction in a direction parallel to the optical disk. It is driven to move radially with respect to the disk.

The disk device 15 is mounted on the inner surface of the lower half 2a as a cabinet chassis and faces an opening 6b formed in the bottom surface 6a of the disk housing portion 6 of the upper half 2b.

To incorporate and fix the disk device 15 in the main body cabinet 2, a plurality (three in this example) of insulators 20 are interposed between the base chassis 16 and the lower half 2a as the cabinet chassis. To have a damper effect. Therefore, the base chassis 16
In order to attach the insulator 20, FIGS.
As shown in FIG.
2 and 4, an insulator 20 is fitted and attached to the mounting piece 21 as shown in FIGS.

The insulator 20 is formed of rubber or a resin material having elasticity, and has a disk-like shape having a required thickness as shown in FIG.
a, and circular recesses 20b and 20c are formed at the center of the upper and lower surfaces.
Are formed to form arc-shaped deep grooves 20d and 20e around the circular concave portions 20b and 20c (see FIG. 6).
On the other hand, the mounting piece 21 is fitted to the fitting groove 2 of the insulator 20.
A fitting hole 21a having substantially the same diameter as the diameter of the fitting hole 21a is formed, and an opening 21b having a required width is formed from the front edge to the fitting hole 21a. At this time, the fitting is performed by press-fitting from the opening 21b and fitting into the fitting hole 21a.

As shown in FIG. 2, the lower half 2a serving as a cabinet chassis to which the insulator 20 attached to the base chassis 16 of the disk device 15 corresponds.
As shown in FIG. 5, a positioning receiving portion 22 is provided. The positioning receiving portion 22 is formed by forming a rib 22b for receiving the insulator 20 radially at the base of a central shaft portion 22a inserted into the lower circular concave portion 20c of the insulator 20. In this example, four ribs 22b are formed in a cross shape in four directions. On the other hand, on the inner surface side of the upper half 2b, as shown in FIG. 6, a pressing portion 23 is formed in a circular projection shape corresponding to the upper circular concave portion 20b of the insulator 20.

The main body cabinet 2 thus configured
In order to incorporate and fix the disk device 15 therein, as shown in FIG. 6, an insulator 20 attached to the base chassis 16 of the disk device 15 is mounted on a positioning receiving portion 22 provided on the lower half 2a as a cabinet chassis. The lower circular concave portion 20c is fitted into the center shaft portion 22a, and the lower surface side is placed in contact with the cross-shaped rib 22b and placed on the lower half 2a. The holding portion 23 is formed into a circular recess 20b on the upper surface of the insulator 20
And the lower half 2a and the upper half 2b are united.

Thus, the disk device 15 is fixed in the main body cabinet 2 in a state where the insulator 20 is sandwiched between the lower half 2a and the upper half 2b. That is, the disk device 15 is connected to the insulator 2
Fixed through 0. In this state, the insulator 20 is placed and received on the cross-shaped rib 22b of the positioning receiving portion 22 without the lower front surface being in close contact with the lower half 2a side. The area becomes smaller.

Accordingly, the insulator 20 is in a semi-fixed state with respect to the main body cabinet 2 and its restraint is moderately loosened, whereby the damper effect of the insulator 20 itself is efficiently drawn out, and the vibration resistance of the disk device 15 is improved. I do.

For comparison, the support and fixing mechanism for supporting and fixing the disk device 15 to the main body cabinet 2 via the insulator 20 and the other two kinds of support and fixing mechanisms in the main body cabinet 2 configured as described above are described. Was subjected to a vibration resistance test.

As shown in FIGS. 7 and 8, as a first test sample supporting and fixing mechanism, a positioning receiving portion 32 of an insulator provided on a cabinet chassis 31 has a central shaft portion 32a erected on the cabinet chassis 31. A ring-shaped rubber spacer 32b formed by forming a rubber sheet in a ring shape on the cabinet chassis 31 so as to surround the root of the central shaft 32a is attached to the cabinet chassis 31 via an adhesive paper 32c, and this is called a rubber spacer product. .

As shown in FIGS. 9 and 10, the cabinet chassis 4 is used as a support and fixing mechanism for the second test sample.
The insulator positioning receiving portion 42 provided on the cabinet chassis 1 is formed by integrally forming a mounting portion 42b protruding in a disc shape at the base of a central shaft portion 42a erected on the cabinet chassis 41. It is called a disk-shaped modified product.

A rubber spacer product and a mold disk-shaped modified product, which are the first and second test samples, are prepared, and the disk device is connected to each of them via an insulator in the same manner as in the case of the present embodiment shown in FIG. 6 described above. Support and fix. Then, the DVD disk is reproduced and unreadable by applying the vibration in the tracking direction and the vibration in the focus direction to the disk respectively to the rubber spacer product, the cavity disk-shaped modified product and the product of the present invention, which support and fix the disk device in this way. Plot the no longer points.

According to the vibration resistance test, a result as shown in FIG. 11 was obtained in the vibration in the tracking direction, and a result as shown in FIG. 12 was obtained in the vibration in the focus direction.

From the above results, the positioning receiving portion of the insulator attached to the disk device is the positioning receiving portion 2 of this embodiment.
2. That is, it was confirmed that a rib 22b for receiving the insulator 20 was formed in a cross shape at the base of the central shaft portion 22a, which was most ideal.

This is because, when the rubber spacer product shown in FIG. 7, that is, when the insulator receiving portion of the insulator positioning receiving portion 32 is formed by the ring-shaped rubber spacer 32b, elastic deformation occurs more than necessary. It is considered that the vibration is increased and the vibration resistance is reduced. In addition, in the case where the cavity disc-shaped modified product shown in FIG. 8, that is, the insulator receiving portion of the insulator positioning receiving portion 42 is formed as a disc-shaped mounting portion 42b integrated with the central shaft portion 42a, the contact area with the insulator is obtained. It is considered that the insulator is restrained more than necessary and the damper effect cannot be sufficiently exerted, so that the vibration resistance is reduced.

The positioning receiving portion 22 of the insulator 20 attached to the disk device of the embodiment of the present invention configured as described above has four ribs 22b radially formed at the base of the central shaft portion 22a. Not limited to a cross, 4
Even if three or less, four or more, five, six or the like are formed,
The same effect of supporting the insulator 20 as the cross-shaped rib 22b described above can be obtained. However, as shown in FIG. 13, in the positioning receiving portion 23 of the insulator, three ribs 23b formed radially on the central shaft portion 23a are provided. In the case of a book, when the rib 23b is formed integrally with the cabinet chassis by casting or the like, if one rib is missing, the insulator cannot be received.

As shown in FIG. 14, in the positioning receiving portion 24 of the insulator, in the case where the number of ribs 22b radially formed on the central shaft portion 24a is large, such as five or six,
The complexity of the molding dies increases the cost of making the dies and increases the cost of the product. Further, if a large number of ribs 22b are formed radially from the central shaft portion 22a, the receiving portion approaches a disk shape, and the contact area with the insulator becomes large, so that the vibration proof characteristics are deteriorated.

In order to reduce the contact area with the insulator, as shown in FIG. 15, a ring-shaped rib 25b surrounding the root of the central shaft portion 25a and receiving the insulator is formed. 25
In the case of the positioning receiving portion 25, the contact area with the insulator is reduced, and the vibration proof characteristic is improved. However, the rib 25b only comes into contact with the insulator in a circumferential shape and is radially different. Since there is no continuous portion, the height may be unstable, and the stability of supporting and fixing the insulator is lacking.

The embodiment of the present invention has been described above.
The present invention is not limited to this embodiment, but can be variously modified without departing from the gist of the present invention.

That is, the specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment of the present invention. The technical scope should not be construed as limiting.

The present invention is not limited to a DVD player. For example, in the above embodiment, an example of a recording and / or reproducing apparatus using an optical disk as an information recording medium has been described. , A disk using a magnetic disk such as a floppy (registered trademark) disk and a hard disk, and a disk using a magnetic tape.

Further, in the above embodiment, the DVD
Although an example in which the present invention is applied to a player has been described, it is needless to say that the present invention can be applied to various electronic devices such as a portable device such as a video camera incorporating such a recording / reproducing device and an information device such as a handheld computer.

[0037]

As described above, in the disk device supporting and fixing mechanism according to the present invention, the insulator for supporting the disk device with respect to the mechanical deck chassis is not directly pressed against the surface of the mechanical deck chassis, but the radial receiving portion of the positioning receiving portion. As a result, the restraint is moderately loosened and the damper effect is brought out, so that the vibration resistance of the insulator of the disk device is improved.

Accordingly, recording and / or reproducing of the optical disk while receiving the vibration becomes possible, and the optical disk is recorded and / or reproduced in a portable optical disk player or a vehicle such as an automobile receiving the vibration. This is advantageous in designing a disk device.

In particular, by forming the positioning receiving portion of the insulator with a substantially cross-shaped rib, the vibration resistance is further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a DVD player to which the present invention is applied.

FIG. 2 is an exploded perspective view of a mounting portion on a cabinet chassis side of the disk device in the DVD player shown in FIG.

FIG. 3 is a perspective view of the disk device shown in FIG. 2 in a state where an insulator of a support portion is removed.

FIG. 4 is a perspective view showing a state in which an insulator is attached to a support portion of the disk device in FIG. 3;

FIG. 5 is a perspective view of a positioning receiving portion on the cabinet chassis side.

FIG. 6 is a cross-sectional view of a support fixing portion in a state where the disk device is supported and fixed in a main body cabinet.

FIG. 7 is a perspective view of an insulator positioning receiving portion of a first comparative example.

FIG. 8 is a cross-sectional view of the insulator positioning receiving portion shown in FIG.

FIG. 9 is a perspective view of an insulator positioning receiver of a second comparative example.

FIG. 10 is a sectional view of the insulator positioning receiving portion shown in FIG. 9;

FIG. 11 is a graph showing vibration resistance characteristics in a tracking direction.

FIG. 12 is a graph showing vibration resistance characteristics in a focus direction.

FIG. 13 is a perspective view of a first modification of the insulator positioning receiver.

FIG. 14 is a perspective view of a second modification of the insulator positioning receiving portion.

FIG. 15 is a perspective view of a third modification of the insulator positioning receiving portion.

[Explanation of symbols]

1 DVD player, 2 cabinet, 2
a ‥‥ lower half (cabinet chassis), 2b ‥‥ upper half, 15 ‥‥ disk device, 16 ‥‥ base chassis, 17 装置 turntable, 18 ‥‥ optical pickup device, 20 ‥‥ insulator, 21 ‥‥ mounting Piece, 2
2 {Positioning receiving part, 22a} Center shaft part, 22b}
rib

Claims (4)

[Claims] 1. A disk device support and fixing mechanism for supporting and fixing a disk device for performing recording and / or reproduction on an optical disk by using a laser beam to a mechanical deck chassis via an insulator, wherein the base chassis of the disk device is provided. A required number of insulators are mounted on the mechanical deck chassis, and a positioning receiving portion on which the insulator is positioned and supported is provided, and a receiving portion on which the insulator is supported is provided on the positioning receiving portion radially from a central shaft portion. Characteristic support and fixing mechanism for disk devices. 2. The disk drive supporting and fixing mechanism according to claim 1, wherein a receiving portion for supporting the insulator of the positioning receiving portion provided on the mechanical deck chassis is formed by radial ribs. Support and fixing mechanism. 3. The supporting and fixing mechanism for a disk device according to claim 1, wherein a receiving portion of said positioning receiving portion provided on said mechanical deck chassis for supporting said insulator is formed by a substantially cross-shaped rib. Supporting and fixing mechanism for disk devices. 4. A supporting and fixing mechanism for a disk device according to claim 1, wherein said receiving portion for supporting said insulator is formed integrally with said mechanical deck chassis by casting. mechanism.