JPS6396765A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To smoothly perform the release of clamping, by providing a clamping means which fixes a disk on a turntable, and a driving means which rocks and drives a guide means when the disk is separated from the turntable by the guide means. CONSTITUTION:A pinion 8 is rotated, and a cam plate 5 is moved in a direction of B, from a state where the disk 24 is clamped. In this state, a pin 3 in a cam groove 6a is raised first by the difference between the shapes of the cam grooves 6a and 6b, that is, the difference between lengths of a flat parts of the cam grooves, and the state that one side of the disk 24 is raised by the receiving part 23 of a tray 20 is generated. When the pinion 8 is rotated further, and the cam plate 5 is moved in the direction of B, the pins 3 at both sides are raised with the cam grooves 6a and 6b, and the clamping of the disk 24 is released completely, and the disk is held at a position taken out from the tray 20, or a holder 2. In this way, it is possible to smoothly release the clamping of the disk.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a recording/reproducing apparatus characterized by a method for releasing a magnetic clamp on a disk.

Conventional technology In recent years, magnets have been used as a method for clamping optical discs, in order to accommodate high-speed rotation and to simplify the structure, a hub with a magnetic material is attached to the optical disc, and this is fixed with a permanent magnet installed on the turntable. The clamp method is attracting attention.

Problems to be Solved by the Invention However, with the above-mentioned magnetic clamp method,
It is necessary to fix the disc to the turntable using a very strong adsorption force of 800 to 1000 g, and when releasing the disc clamp, 1 not only does it require a very large force, but also 1 For example, systems using disc cartridges etc. However, there was a problem in that the cartridge was deformed.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a recording/reproducing device that prevents deformation of a cartridge due to vertically lifting a disk.

Means for Solving the Problems In order to achieve the above objects, the present invention comprises a pickup means, a guide means for guiding a disc to a turntable, a clamp means for fixing a disc to the turntable, and a guide means for guiding a disc to a turntable. The structure includes a drive means for swinging the guide means when the guide means is moved away from the turntable.

OPERATION This invention provides that the disc is not lifted in the vertical direction by being driven in a rocking motion, but is lifted in the vertical direction because a two-step release action is performed, first lifting one side of the disc and then lifting the other side. Not only is it possible to release the clamp with a smaller force compared to the conventional method, but it is also possible to achieve a very smooth release operation that prevents deformation of the cartridge, etc.

Embodiment One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of an embodiment of a recording/reproducing apparatus according to the present invention.

In FIG. 1, the tray holder 2 has a cam by engaging a pin 3 fixed thereto with a slit 4 of the chassis 1 and cam grooves 8N and 6b of a cam plate 6 slidably held by the chassis 1. It is supported so that it can move up and down in response to the movement of the plate 6. A rack portion 7 is provided at one end of the cam plate 6, and this is engaged with a binion 8 rotatably held by the chassis 1. The binions 8 are located on both sides of the chassis 10, and are connected by a shaft 9, so that the cam plates 6 on both sides are driven in synchronization.

Note that the driving means for the pinion 8 is omitted.

Further, a turntable 10 and a pickup 11 are attached to the chassis 1.

FIG. 2 shows a disk 24 and a tray 20 that can be used in the recording/reproducing apparatus of this embodiment. The tray 20 is provided with a long hole 21 into which the pickup 11 can enter and a disk storage recess 22. 1 in this disc storage recess 22.
A disk 24 having a magnetic hub 26 with a center hole 26 attached to both sides is held in a supported manner by the receiver portion 23 .

FIG. 3 shows a state in which the disk 24 is clamped, and the center hole 26 of the disk 24 is engaged with the main shirt 10a, and the hub 26 is a ring-shaped magnet fixed to the turntable 10. It is fixed to the turntable 10 by being attracted to IQb.

At this time, the retainer portion 23 of the tray 20 and the disk 24 are released, the pickup 11 enters the elongated hole 21, and the motor IQC rotates, thereby enabling recording and reproducing operations.

Figures 4 and 6 are diagrams showing the clamp release operation.
The figure shows the operating position of the cam plate 6, and FIG. 6 shows the state of the disk 24 and tray 20 corresponding to FIG. 4.The operation will be described below with reference to FIGS. 1 to 3.

The tray 20 containing the disk 24 is a tray holder 2.
When the cam plate 6 moves in the inward direction, the state shown in FIG. 3 is reached. Corresponding to this FIG. 3 are the person in FIG. 4 and the person in FIG. 5.

Next, the operation of releasing the clamp on the disk 24 will be explained. Figure 4 person with disk 24 clamped, Figure 5
By rotating the pinion 8 and moving the cam plate 6 in the direction B, the state shown in FIG. 4C9 and FIG. 6B is obtained. In this state, due to the difference in the shape of the cam grooves 6N and 6b, that is, the difference in the length of the flat part of the cam grooves, one side, that is, the pin 3 in the cam groove θ& is first lifted up.

Therefore, the disk 24 is in a state where one side is lifted by the receiving part 23 of the tray 20. When the pinion 8 further rotates and the cam plate 5 moves in the direction B, the cam groove 6&,
The state shown in FIG. 4C and FIG. 6C is reached in which the pins 3 on both sides are lifted by the pins 6b, and the disk 24 is completely unclamped and held at a position where it can be taken out from the tray 20 or the tray holder 2.

As can be seen from the above explanation of the operation, when releasing the clamp, a swinging release operation is performed in which one side is first lifted and then the other is lifted.

Effects of the Invention According to the present invention, since the disc clamp is released by a swinging motion, it is possible to release the clamp smoothly with a smaller force than when the disc is simply lifted up vertically, and also to release the clamp on the tray or In systems using cartridges, it is also possible to prevent deflection of the tray and cartridge, which may occur when the clamp is released.

As described above, the present invention can be realized with a simple configuration and has great effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a schematic configuration of an embodiment of a recording/reproducing device according to the present invention, FIG. 2 is a perspective view showing a disk and a tray, and FIG. 3 is a cross-sectional view of main parts showing a clamped state of the disk. FIG. 4 is a schematic side view showing the clamp release operation, and FIG. 5 is a sectional view of the same essential part. 1... Chassis, 2... Tray holder, 6... Cam plate, End... Rack 1 (
St s""" Binion, 10...Turntable, 11...Pickup. 20...Tray, 24...Disc,
26...／・bu. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
--Quarn 2-11 Tray Hole 7-5-Cam Plate 8-Pinion 9-1-Shaft 10--Turntable No. 1 Figure 11--Vinqua, 7
)・Figure 3 Atsushi Figure 4/ , 5 7 5
Figure 10α 10°io (:L10c

Claims (2)

[Claims] (1) A turntable on which a disc is placed and rotates,
a pickup means for recording, reproducing or erasing signals on the disk; a guide means for guiding the disk to the turntable; a clamp means for fixing the disk to the turntable; A recording/reproducing apparatus comprising: drive means for swinging the guide means when the disc is separated from the turntable. (2) The driving means is configured to sequentially take a first state in which the guide means lifts one side of the disk and a second state in which the entire disk is lifted up. recording and reproducing equipment.