JPH067480Y2 - Disk device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a disk device, and more particularly to improvement of a disk clamp mechanism.

[Prior Art] As a disc device, for example, a compact disc device for reproducing a compact disc has been proposed. And this compact disc device has a diameter of 12 cm.
General compact disc (hereinafter referred to as "CD")
And a compact disc with a diameter of 8 cm (hereinafter referred to as "CD single"). FIG. 2 shows the whole of such a disk device.

In the figure, reference numeral 100 denotes a disk device body, and 10
Reference numeral 1 is the disc mounting portion. Reference numeral 200 denotes a lid body attached to the disc mounting portion 101 of the disc device main body 100 at a corresponding position.

3 and 4 show a state in which the lid body 200 is opened and a state in which it is closed, respectively.

In the figure, 102 is a spindle motor, and 103 is a spindle rotated by the spindle motor 102. A turntable 104 that constitutes a disk clamp mechanism is provided above the spindle 103. And 105 is a taper guide which is widened toward the lower part, and this taper guide 105 is formed integrally with the spindle 103, for example.

In this case, the tape guide 105 passes through a positioning hole (not shown) formed in the center of the CD or CD single, and the CD or CD single is placed on the turntable 104. FIGS. 3 and 4 show a state in which the CD single is placed, and 106 is the CD single.

Further, 201 is a clamp base which is a component of a clamp mechanism and which is made of a metal such as aluminum, and a clamp sheet 202 made of polycarbonate or the like is attached to the clamp base 201. The clamp base 201 and the clamp sheet 202 are used as the lid 20.
It is rotatably attached to a position facing the 0 turntable 104. In this case, the clamp sheet 202 is
The clamp base 201 is attached to the turntable 104 side, and openings 201a and 202a into which the taper guide 105 is inserted when the lid 200 is closed are formed in the central portions of the clamp base 201 and the clamp sheet 202. The size of the clamp sheet 202 is substantially the same as the size of the CD single 106, and the contact area with the disc is large. Note that FIG. 5 shows the clamp sheet 202.

Further, one end side of the lid body 200 is attached to the disc device main body 100 so as to be openable and closable with a shaft 203. And
A torsion coil spring 204 is arranged at the center so that the shaft 203 penetrates, one end of the spring 204 is locked by a stopper 205 fixed to the disk device body 100, and the other end of the spring 204 is attached to the lid body 200. It is locked by the fixed stopper 206. Thus, when the lid body 200 is closed, the spring body 204 urges the lid body 200 in the opening direction.

In the above configuration, the CD or CD single 106 is placed on the turntable 104 with the lid body 200 opened as shown in FIG. And the spring 204
The lid body 200 is closed against the spring force of (1) and the state shown in FIG. 4 is obtained. Although not shown, the disk device body 100 is
A lock mechanism for the lid body 200 is provided so that this state is maintained. When the lid 200 is closed as described above, the CD or the CD single 106 is held between the turntable 104 and the clamp sheet 202. Then, reproduction is performed in this state.

By the way, the size of the turntable 104 in the above example is
The diameter is set to 26 mm to 33 mm in order to read TOC information and the like from the lead-in area on the disc. Therefore, it becomes unstable when the CD single 106, which is lighter in weight than the CD, is mounted. However, in the above example, the size of the clamp sheet 202 is set to be substantially the same as the size of the CD single 106 to increase the contact area with the disc. Therefore, even when the CD single 106 is mounted, it is stable and can be reproduced well.

[Problems to be Solved by the Invention] In the above example, when the lid 200 is closed, the lid 200 is urged in the opening direction by the spring 204, and the locking mechanism is applied from the closed state. When the lock is released, the lid body 200 is immediately opened. In this case, when the CD single 106 is mounted, the contact area with the clamp sheet 202 is large as described above, so that the CD single 106 is attached to the clamp sheet 2.
The CD single 106 is moved by moving in the opening direction while being in close contact with 02, and then air is introduced into its own weight or the close contact part.
Could fall, resulting in damage to the disc.

Then, this invention aims at eliminating the above-mentioned inconvenience.

[Means for Solving the Problems] In the present invention, the lid body is opened and a disc is placed on the turntable of the disc device body, and then the lid body is closed and used, and the lid body is opposed to the turntable. A disc device in which a clamp sheet that constitutes a disc clamp mechanism is arranged at a position and a disc is sandwiched between a turntable and the clamp sheet when a lid is closed, and a plurality of slits are formed in the clamp sheet. Is.

[Operation] In the above-described configuration, since the slit is formed in the clamp sheet 202 and the contact area with the disc becomes small,
When the lid 200 is opened, the disc immediately leaves the clamp sheet 202 and remains on the turntable 104,
It is possible to prevent the disc from moving in the opening direction while being in close contact with the clamp sheet 202.

Since the size of the clamp sheet 202 is not reduced, the disc can still be sufficiently clamped.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In this example, as shown in FIG. 1, the clamp sheet 2
The slits 301 and 3 are provided on the inner and outer peripheral sides of 02, respectively.
A plurality of 02 are radially formed. The slit 30
Only one of 1 or 302 may be used.

The clamp sheet 202 of this example is configured as described above,
The other parts are constructed in the same manner as in the examples of FIGS.

In the configuration of the present example, the contact area with the disc in the closed state of the lid body 200 is reduced because the slits 301 and 302 are formed in the clamp sheet 202. Therefore, even if the CD single 106 is mounted, the lid 20
When 0 is opened, the CD single 106 is immediately separated from the clamp sheet 202 and remains on the turntable 104. Therefore, the CD single 106 is the clamp sheet 20.
It is possible to prevent the disc from moving in the opening direction while being in close contact with the disc 2, and prevent the disc from being damaged by being dropped.

In this case, since the size of the clamp sheet 202 is not reduced, the disc can still be sufficiently held.

Although the slits 301 and 302 are formed in the clamp sheet 202 in the above embodiment, a plurality of concave portions such as round holes may be formed. In that case, if a similar round hole or the like is formed in the clamp base 201 so as to correspond to the round hole or the like of the clamp sheet 202, one surface of the round hole or the like is opened to the outside with the lid body 200 closed. Therefore, it is more effective in terms of separating the disc from the clamp sheet 202.

Still further, in the above-mentioned embodiment, the example of the disc device capable of reproducing the CD and the CD single is shown, but the present invention can be similarly applied to the disc device capable of reproducing only the CD single. It can be favorably applied to a so-called compact disc device, a radio receiver, and a composite product of a tape recorder.

Further, in the above-mentioned embodiment, the example of the disc device capable of reproducing the compact disc is shown, but the present invention can be similarly applied to other disc devices capable of reproducing the optical disc and the magnetic disc.

[Effects of the Invention] As described above, according to the present invention, since the plurality of slits are formed in the clamp sheet and the contact area with the disc is reduced, the disc is immediately removed from the clamp sheet when the lid is opened. Stay away on the turntable.
In this case, since a slit that allows easy ventilation is formed instead of a simple concave portion, the pressure in the clamp sheet and the disc during chucking of the disc lowers the air pressure in the slit, and when the lid opens, the disc is placed in the clamp sheet. It does not remain in close contact. Therefore, it is possible to prevent the disc from moving in the opening direction while being in close contact with the clamp sheet, and it is possible to favorably prevent the disc from being damaged due to a drop or the like.

[Brief description of drawings]

FIG. 1 is a plan view of a clamp sheet according to an embodiment of the present invention, FIG. 2 is a perspective view of an example of a disk device, and FIGS. 3 and 4 are diagrams showing the operating state of the main parts thereof, and FIG. FIG. 4 is a plan view of the clamp sheet. 100 ... Disk device body 101 ... Disk mounting section 102 ... Spindle motor 103 ... Spindle 104 ... Turntable 105 ... Tapered guide 106 ... CD single 200 ... Lid 201 ... Clamp base 202 ... Clamp Sheet 204 …… Torsion coil spring 205,206 …… Stopper 301,302 …… Slit

Claims (1)

[Scope of utility model registration request] 1. A disc clamp mechanism is used at a position facing the turntable of the lid after the lid is opened and a disc is placed on the turntable of the disc device body and then the lid is closed. And a plurality of slits are formed in the clamp sheet in a disc device in which the disc is sandwiched between the turntable and the clamp sheet when the lid sheet is closed. Disk device.