JPH0454636Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a support device for a disk clamper used to hold a disk on a turntable in a disk drive device such as an optical disk player.

<Summary of the invention> The present invention has a structure in which a disk clamper is provided on the lower surface of the lid, and a support hole for supporting the disk clamper is formed in a roughly U-shaped support plate that is recessed from the lid and is open on one side. The opening of this support hole is closed with a blocking piece provided on a shielding plate that is attached to cover the recessed part after the disk clamper is installed, to prevent the disk clamper from coming off. This simplifies the assembly procedure and also simplifies the structure of the disk clamper.

<Prior Art> In order to simplify the structure, one known supporting device for a disk clamper utilizes the lower surface of a lid that opens and closes to cover the disk mounting portion. Fourth
A conventional disk clamper support device of this type will be explained with reference to FIGS. Figure 4 is an exploded perspective view.
FIG. 5 is a cross-sectional view taken along the line B--B in FIG. 4 after assembly.

In the figure, 1 is a cover body, which is integrally formed with a circular support plate portion 2 recessed downward from its plate surface. A support hole 3 is drilled in the support plate portion 2. 4 is a clamper, which is not shown in the figure, and functions to hold a disk on the turntable by the attractive force between a magnet fixed to a part of it and the turntable made of a magnetic material. The disk clamper 4 is formed with a shaft portion 5, the diameter of which is sufficiently smaller than the diameter of the support hole 3, and they are not in contact when the disk is clamped. 6 is a clamper holder, which is fixed to the disk clamp 4 with a screw 7 sandwiching the support plate portion 2, and holds the disk clamp 4 to the support plate portion 2. 8 is a shielding plate, which is attached by adhesive to a recess 9 above the support plate portion 2 after the disk clamper 4 is installed to prevent the surroundings of the support plate portion 2 from being exposed to the outside and for decorative purposes.

To assemble the above device, please use the disk clamper 4.
After screwing the clamper holder 6 and the shielding plate 8
Complete by gluing.

<Problems to be Solved by the Invention> Since the conventional device described above uses a circular hole drilled in the lid as a support means, a holder to prevent the clamper from coming off is essential for mounting the clamper. This method requires fastening means such as screws to fix the holder together with the holder, and has problems such as a large number of parts and a time-consuming installation process.

<Means for Solving the Problems> The present invention aims to eliminate the problems of the conventional device described above, and has a substantially U-shaped structure in which a part of the support plate is cut out and a support hole is opened on one side. The shielding plate is formed with a notch, and a blocking piece is integrally formed on the shielding plate to protrude into the opening and prevent the disc clamper from coming off.

<Function> With this configuration, the disk clamper can be installed by simply inserting the shaft into the U-shaped support hole and attaching the shielding plate. It is possible to mold the clamper integrally with a portion corresponding to a conventional holder, and it is also possible to reduce the number of parts.

<Example> The present invention will be described in detail below according to the example shown in FIGS. 1 to 3.

FIG. 1 is an exploded perspective view, and FIGS. 2 and 3 are cross-sectional views taken along line A--A in FIG. 1, showing the state during and after assembly, respectively.

In the figure, reference numeral 11 denotes a lid body, and a support plate portion 12 recessed downward from the plate surface is integrally formed therein. A support hole 13 is bored in the support plate portion 12, and this hole is connected to an opening 14 provided on the side of the support plate portion 12, and has a substantially U-shape with one side open. 15 is a disk clamper, and the shaft portion 1
6. The collar portion 17 is integrally molded. This disk clamper 15 acts to clamp the disk to the turntable by the action of a built-in magnet (not shown) as in the conventional example. Shaft 16
The diameter of the flange 17 is sufficiently smaller than the diameter of the support hole 13, and is set so that they do not come into contact with each other when the disk is clamped. The opening 14 is set so that it cannot escape from the hole in the axial direction, but the opening 14 is set to a size that can be received by the collar 17. 18 is the support plate portion 12
This is a shielding plate that is adhesively fixed to the recessed part 19 above the support plate part 2, and contributes to concealment and decoration around the support plate part 2.
A blocking piece 20 is also integrally formed on the shielding plate 18 . This blocking piece 20 moves the shielding plate 18 into the recess 1.
9, it is positioned so as to close the opening 14, and functions to prevent the disk clamper 15 from coming off toward the opening 14.

To assemble the device configured as described above, first, as shown in FIG. Attach it to correspond to 13. After that, the shielding plate 18 is adhesively fixed in the recess 19 as shown in FIG. By attaching the shielding plate 18, the blocking piece 20 closes the opening 14 and prevents the disk clamper 15 from coming off toward the opening 14.

As described above, assembly of the device is completed by only inserting the disk clamper 15 and attaching the shielding plate 18, and the disk clamper 15 is loosely inserted and supported by the support plate portion 12.

<Effects of the invention> As described above, according to the invention, the work procedure can be greatly simplified compared to conventional devices, and the disk clamper can be integrally molded with a flange corresponding to the clamper holder. This has a great effect on reducing the number of parts.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
Figures 2 and 3 are cross-sectional views taken along the line A-A in Figure 1 showing during and after assembly, Figure 4 is an exploded perspective view of the conventional device, and Figure 5 is after assembly is completed. FIG. 4 is a sectional view taken along line B-B in FIG. 4; 11...Lid body (substrate), 12...Support plate part, 1
3...Support hole, 14...Opening, 15...Disc clamper, 16...Shaft portion, 17...Brim portion, 18
...Blocking plate, 20...Blocking piece.

Claims (1)

[Scope of utility model registration request] For a disk clamper having a shaft portion and a collar portion having a larger diameter than the shaft portion, a support hole having a diameter larger than the shaft portion and a diameter smaller than the collar portion is provided in a support plate portion located at a position recessed from the flat plate-shaped base body. , a part of the support plate part is provided with an opening that is connected to one side of the support hole and allows the shaft part and the collar part of the disk clamper to be inserted into the support hole, and above the support plate part of the base body,
A supporting device for a disk clamper, which has a blocking piece that protrudes into the opening and whose shaft portion corresponds to the support hole to prevent the disk clamper from coming off, and is attached with a shielding member that hides the support plate portion.