JPH0351795Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a turntable for a disc player that fixes a disc to a turntable and rotates it at a constant speed, and reads and reproduces digital signals recorded on the disc using a laser pickup. The present invention relates to a table device.

``Prior Art'' Conventionally, as shown in FIG. 4, a turntable 5 is equipped with a table plate 2 on which a disk 1 is placed, and a magnetic metal plate 4 exposed from the core hole 3 of the disk 1 on the upper surface side. The table plate 2 and metal plate 4 are fitted and fixed to the shaft body 6, and the output shaft 9 of the disk drive motor 8 fixed to the chassis 7 of the machine is inserted into the shaft hole of the shaft body 6, and the output shaft 9 is inserted into the shaft hole. The technology to support the turntable 5 has been developed.

"Problems to be Solved by the Invention" The above-mentioned prior art uses a metal shaft 6 to fix the magnetic metal plate 4 to the top surface of the turntable 5, so it eliminates the need for screws or adhesives. I was able to easily fix the plate 4, but the motor 8
When inserting the output shaft 9 into the shaft hole of the shaft body 6,
If the output shaft 9 were press-fitted, the bearing inside the motor 8 would be damaged, so the output shaft was loosely inserted and fixed to the shaft body 6 using adhesive or screws, but adhesive work or screw fixing work is required. However, there were problems in that it was difficult to improve workability and reduce costs.

``Means for Solving the Problems'' However, in the present invention, the magnetic chuck plate of the clamper is provided so as to be movable up and down on a magnetic chuck turntable that rotates a disk, and the chuck plate is attracted to the turntable. In a device for holding a disk between the two, a shaft portion having a shaft hole into which the output shaft of the disk drive motor can be press-fitted is integrally molded on the synthetic resin table plate of the turntable, and the upper end side of the shaft portion of the table plate is integrally molded. The turntable is characterized in that a metal shaft body is integrally fixed by insert molding, and a magnetic metal plate provided on the upper surface of the turntable is fitted and fixed to the shaft body.

``Function'' Therefore, the turntable can be fixed simply by press-fitting the output shaft of the motor into the shaft of the table plate, and the magnetic metal plate can also be securely fixed as before, and the output shaft can be fixed as before. There is no need to worry about damaging the bearings, and there is no need for gluing or screwing work, and the turntable can be securely fixed to the output shaft with simple work, improving turntable installation workability compared to conventional methods. This makes it extremely easy to reduce costs.

"Embodiments" Hereinafter, embodiments of the present invention will be described in detail based on the drawings. FIG. 1 is a front view of the main parts, FIG. 2 is an explanatory view of the disk installation, and FIG. 3 is an exploded view of the main parts. An output shaft 12 of the motor 11 is bored through a mounting hole 13 on the upper surface side of the chassis 10, and a magnetic chuck turntable 14 is fixed to the upper end of the output shaft 12, and a disc 15 is mounted on the turntable 14.
It is configured so that it can be placed on it removably.

Further, one end of a clamper 17 is supported on the chassis 10 via a fulcrum shaft 16, and a magnetic chuck plate 18 is rotatably attached to the other end of the clamper 17. The chuck plate 18 is attached to the upper surface of the turntable 14, and the disc 15 is sandwiched between them.
It is configured to rotate at a constant speed.

Further, a shaft portion 20 is integrally formed in the center of a disk-shaped synthetic resin table plate 19 forming the turntable 14 during the molding process, and a shaft hole 21 into which the output shaft 12 of the motor 11 can be press-fitted and securely fixed. is formed at the center of the shaft portion 20, and when the table plate 19 is molded, a metal shaft body 22 is integrally fixed to the upper end side of the shaft portion 20 by insert molding.

Further, a magnetic metal plate 23 is provided, which is arranged at the center of the upper surface of the turntable 14 and attracts the chuck plate 18 by its magnetic force, and the shaft body 22 is press-fitted into the center hole 24 of the metal plate 23 to integrally connect them. A disk positioning ring body 26 made of synthetic resin is provided for fitting and fixing and for positioning by engaging the core hole 25 of the disk 15. The ring body 26 is attached to the outer shaft portion 20a formed in the shape so as to be able to rise and fall freely, and a spring 2
7 to raise and support the wheel body 26, the wheel body 26 is inserted into the core hole 25 of the disk 15, and the disk 15 is sandwiched between the chuck plate 18 and the table plate 19 which are attracted to the metal plate 23. , motor 1
1 rotates the turntable 14 to reproduce the disc 15.

The present invention is constructed as described above, and the diameter of the shaft hole 21 is slightly smaller than the diameter of the shaft hole 22a of the shaft body 22, and the diameter of the output shaft 12 of the motor 11 is the same or slightly smaller than the diameter of the shaft hole 22a. The diameter of the shaft hole 21 is formed smaller than the diameter of the output shaft 12, and the output shaft 12 is press-fitted into the shaft hole 21, and the synthetic resin shaft portion 20
Utilizing the flexibility of the The shaft portion 20 is fixed.

"Effects of the Invention" As is clear from the above embodiments, the present invention provides a magnetic chuck plate 18 of a clamper 17 that is movable up and down with respect to a magnetic chuck turntable 14 that rotates a disk 15. In a device for adsorbing the plate 18 and sandwiching the disk 15 between them, a shaft portion 20 having a shaft hole 21 into which the output shaft 12 of the disk drive motor 11 can be press-fitted is attached to the synthetic resin table plate 19 of the turntable 14. In addition to integrally molding,
A metal shaft body 22 is integrally fixed to the upper end side of the shaft portion 20 of the table plate 19 by insert molding, and a magnetic metal plate 23 provided on the upper surface of the turntable 14 is fitted and fixed to the shaft body 22. The output shaft 12 of the motor 11 is connected to the table plate 1.
The turntable 14 can be fixed simply by press-fitting it into the shaft portion 20 of the turntable 9, and the magnetic metal plate 23 can also be securely fixed as in the conventional case, preventing damage to the bearing of the output shaft 12 as in the conventional case. The turntable 14 can be attached to the output shaft 12 without any worries and without the need for gluing or screwing.
It is possible to securely fix the turntable 14 with a simple operation, and it has practical effects such as improving workability for attaching the turntable 14 and reducing costs extremely easily compared to the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a front view of essential parts showing an embodiment of the present invention;
FIG. 2 is an explanatory diagram of disk mounting, FIG. 3 is an exploded view of the main part, and FIG. 4 is a front view of the main part showing a conventional example. DESCRIPTION OF SYMBOLS 11...Disk drive motor, 12...Output shaft, 14...Turntable, 15...Disk, 17...Clamper, 18...Magnetic chuck plate, 19...Table plate, 20...Shaft portion, 21...
... shaft hole, 22 ... shaft body, 23 ... magnetic metal plate.

Claims (1)

[Scope of utility model registration request] In a device in which a magnetic chuck plate of a clamper is movable up and down with respect to a magnetic chuck turntable that rotates a disk, and the chuck plate is attracted to the turntable and the disk is held between them, the output shaft of the disk drive motor A shaft portion having a shaft hole that can be press-fitted is integrally molded on the synthetic resin table plate of the turntable, and a metal shaft body is integrally fixed to the upper end side of the shaft portion of the table plate by insert molding. A turntable device for a disk player, characterized in that a magnetic metal plate provided on the upper surface of the turntable is fitted and fixed to the shaft body.