JPS6131436Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clamping device for a rotating disk-shaped information recording disk, and particularly to a video disk player.

Traditionally, video disc players rotate at high speed within an airtight cavity to prevent leakage radiation and wind noise from the disc. The heat and moisture produced had a negative impact on video discs made of PVC and acrylic.

Therefore, an object of the present invention is to radiate heat by ventilating the air around the video disk, thereby actively eliminating the adverse effects of heat.

Next, a description will be given according to the drawings. In FIG. 1, reference numeral 1 denotes a lid which can be opened and closed so as to cover the rotating surface of the disc of the video disc player, and has a cavity 2. Furthermore, a hole 4 is formed in the lid 1 directly above the disk rotating spindle 3, and a plurality of small holes 5 are formed around the hole 4. A ventilation fan 6 is provided on the upper part of the clamp device 8, has a large number of fans 7 on the outer periphery, and is rotatably placed in the cavity 2. Further, the clamping device 8 extending downwardly from the hole 4 of the lid 1 is provided with a metal plate 9 and a flange 8' on the bottom surface.

Reference numeral 10 denotes a turntable, which is fitted onto the spindle 3 and has a magnet 12 and a pole yoke 11 in the center, and is rotatable integrally with the spindle 3. 13 is the top housing of the player body and has a slot 14.

In the clamping device with a fan configured as described above, when the lid 1 is opened upward and the disk 15 is placed on the turntable 10, and the lid 1 is closed again, the bottom of the clamping device 8 touches the magnet 1 on the turntable 10.
2 and the yoke 11, and the flange 8' presses and fixes the clamp 15 on the turntable 10.

In this way, when the rotating spindle 3 is driven, the disk 15 is fixed to the turntable 10 by the clamping device 8, so the fan 7 coupled to the clamping device 8 rotates, and from the hole 4 and the small hole 5. Heat and moisture generated from motors and other electrical equipment accumulated in the cavity 16 formed by the lid 1 and the main body top housing 13 are sucked into the cavity 1, and are then transferred to an appropriate location (not shown) on the lid 1. Discharge to the outside through the provided ventilation holes.

According to the present invention, as explained above, the cavity 1
The heat accumulated in the disk 6 can be discharged to the outside with a simple configuration, and leakage radiation and disk wind noise, which have been conventionally required, can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the clamping device of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1... Lid, 2, 16... Cavity, 3... Spindle, 4... Hole, 5... Small hole, 6... Exhaust fan,
7... Fan, 8... Clamp device, 8'... Flange, 9... Metal plate, 10... Turntable, 11... Pole yoke, 12... Magnet,
13...Top housing, 14...Slot hole, 15
...disk.

Claims (1)

[Scope of utility model registration request] 1. A fan-equipped disc clamping device for a disc player, characterized in that a fan is provided in a part of the clamping device, and ventilation is performed through the inside of a cavity of a lid by rotation of the clamping device.