JPH09212999A - Disk reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a disk reproducing apparatus in which the rotation of a disk is stopped quickly when the disk is discharged by a method wherein an elastic contact body is fixed and bonded to the prescribed position of an enclosure. SOLUTION: When an ejection button is pressed during a reproducing operation, a control circuit 12 starts to move a disk conveyance body 6 to a removal position. Then, when a switch 13 is separated from the conveyance body 6 so as to be set to an OFF state, the circuit 12 controls a drive part 5 so as to brake the rotation of a turntable 2. Since the conveyance body 6 is moved instantaneously by the force of a spring, a disk 1 comes into contact with a contact part 10 while it is being turned. The overlap of the contact part 10 with the disk 1 is absorbed by the elastic force of the contact part 10 by the loose movement of a loose mounting means 8 between the drive part 5 and the conveyance body 6. The rotation of the disk 1 is braked and stopped by the friction of the disk 1 with the contact part 10 produced by a repulsive force at this time. After that, the disk 1 is separated from the contact part so as to be discharged to the removal position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus for braking rotation of a disc to be ejected.

[0002]

2. Description of the Related Art Conventionally, a disc reproducing device for fixing a disc placed on a turntable by sandwiching it with a clamper from above has been used for music, images, information and the like. And in order to reduce the thickness of the device, remove the clamper,
A disc reproducing apparatus having a hook on the turntable side for locking the disc when pressed by a user has been considered. In this disc reproducing device, a user directly attaches a disc to a turntable directly connected to a drive device at a disc mounting position.

[0003]

In the above-mentioned disc reproducing apparatus, when the disc is ejected, the disc is pulled out from the main body together with the drive unit, so that the disc is pulled out while being placed on the turntable. . Therefore, if the disc is not braked when the disc is ejected during reproduction, the disc is pulled out from the main body while rotating. If the disc is pulled out from the main unit while it is still rotating, the fingertip may be injured by the edge of the disc, or the disc may hit the disc playback device and damage either of them. is there. Incidentally, the rotation speed of the disk is 500 rpm for a CD, but the recent CD-ROM is 3,000 rpm at 6 times speed, which is dangerous.

A method of electrically braking a disk that is rotating at a high speed to stop the disk is described in, for example, Japanese Patent Laid-Open No. 234/234.
Although it is known from Japanese Patent No. 243, etc., it takes 2 to 3 seconds to completely stop. In a disc reproducing apparatus having a structure in which a disc carrier is electrically pulled out by a motor, a plunger (DC solenoid), etc., a time lag can be provided by electrical control so that the disc is ejected after the rotation is stopped. However, in this case, the ejection time is delayed, and for users who want to change the disc quickly,
Dissatisfied.

Although a disk reproducing apparatus which ejects mechanically by using a strip or the like is inexpensive, the disk is ejected while it is rotating, which causes a dangerous state as described above.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and a first feature thereof is a disc carrier which is movably supported between a disc loading position and a disc playing position, Braking means is provided for braking the rotation of the disc held by the disc carrier only during the period in which the disc carrier moves from the disc reproducing position to the disc loading / unloading position.

A second feature is a disc carrier which is movably supported between a disc loading position and a disc playing position, and a period during which the disc carrier moves from the disc playing position to the disc loading position. In this case, an elastic body that comes into contact with the disk held by the disk carrier is provided.

A third feature is that a disc carrier movably supported between a disc loading position and a disc playing position, a disc driving device for rotating the disc, and the disc driving device capable of fine movement. And a contact member that contacts the disk held by the disk drive device only while the disk carrier moves from the disk reproducing position to the disk detaching position. That is.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a main part of a disc reproducing apparatus of the present invention. FIG. 2 is a cross-sectional view showing the reproducing state of the disc, which is taken along the line AA 'in FIG. FIG. 3 is a sectional view showing a braking state of the rotation of the disc. FIG. 4 is a cross-sectional view showing a state where the disc is transported to the detaching position. For the sake of explanation, FIGS. 1 to 4 omit the illustration of the entire panel where the disc is inserted.

(1) is a disk, on which music, video, information, etc. are written. (2) is a turntable on which the disc (1) is placed. (3) is a turntable shaft. (4), (4), (4) and (4) are spherical hooks, which are attached to the shaft (3) while being biased outward by a spring or the like. The urging force causes the disc (1) to be sandwiched between the turntable (2) and the hook (4).

Reference numeral (5) is a drive unit, which is equipped with a motor (not shown) for rotating the turntable (2) at 3,000 rpm which is 6 times speed. Reference numeral (6) is a disk carrier, which is provided with moving mechanisms (7) and (7) for moving at least between the disk loading / unloading position and the disk playback position. This moving mechanism is an inexpensive mechanism that stores the energy urging the disc carrier (6) from the detaching position to the reproducing position, and moves the disc carrier (6) from the reproducing position to the detaching position by the energy. .

Numerals (8), (8), (8) and (8) are loosening means for loosely moving the drive unit (5) on the disk carrier (6). This loose attachment means has been conventionally used for impact resistance, and for example, it sandwiches the drive unit (5) and the disk carrier (6) with screws via a rubber material.

(9) is a housing. Reference numeral (10) is an abutment body, which is made of an elastic material such as rubber and fixed to the housing (9). The fixed position is only during the period when the disc carrier (6) moves from the disc reproducing position (position of FIG. 2) to the disc detaching position (position of FIG. 4).
The position where the contact body (10) contacts the disc (1) (see FIG. 3).
Position). In this way, the contact portion (10) does not contact the disc (1) at the reproducing position and the detaching position, and thus does not hinder the reproducing or the detaching. This contact part (1
As for 0), assuming that the disk (1) has moved on a straight line, it is the most overlapped and it is designed to bite into the 0.5 mm disk (1).

A printed circuit board (11) is provided with a control circuit (12) for controlling at least each part of the apparatus and a switch (13) for detecting that the disk carrier (6) is in the reproducing position. The switch (13) automatically reproduces when a disc is inserted, and when the disc carrier (6) is not at the reproduction position, the switch (13) is pressed regardless of the button operation.
It is for making it a TOP state.

The ejecting operation of the disc (1) having the above construction will be described. When the EJECT button (not shown) is pressed during reproduction, the control circuit (12) causes the disc carrier (6) to move.
To start moving to the removable position. And switch (1
When 3) is separated from the disc carrier (6) and turned off, the control circuit (12) controls the drive unit (5) so as to brake the rotation of the turntable (2). However, it takes 2 seconds to 3 until the disc (1) stops completely.
Takes seconds. Since the disc carrier (6) instantly moves due to the force of the spring, the disc (1) remains in contact with the contact portion (10) while rotating. The contact portion (10) is designed to overlap the disc (1) in the radial direction of the disc (1) by a maximum of 0.5 mm. This superposition is absorbed by the elasticity of the contact portion (10) and the free movement of the loose attachment means (8) between the drive portion (5) and the disc carrier (6). The friction between the disc (1) and the abutting portion (10) caused by the repulsive force at this time brakes the rotation of the disc (1) and stops it. After that, the disc (1) is separated from the contact portion (10) and ejected to the attachment / detachment position.

As described above, even if the disc carrier (6) is moved by a mechanism using an inexpensive spring, the contact body (10)
It is possible to brake the disc (1) that rotates at a high speed of 6 times that of the CD by simply adding. Further, in order to obtain this braking force, the loosening means (8) conventionally used as a shock-proof is also used, so that the braking means of the present invention can be constructed at low cost.

In the above example, the contact body (10) is fixed to the housing (9), but it may be moved to the disk (1).

When the disk carrier (6) is moved by the control of the control circuit (12), if the turntable (2) is ejected after the rotation of the turntable (2) is stopped at the reproducing position, as described above. There is no danger of injuring your fingertips or damaging the disc or disc playback device. However, since it takes 2 to 3 seconds to eject the disc, it is unsatisfactory for a user who wants to quickly exchange the disc, and the present invention is also useful for such a disc reproducing apparatus.

[0019]

As described above, when the disc is ejected, the rotation of the disc can be stopped quickly with an inexpensive structure.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a configuration of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a reproducing position state of the disc carrier of the embodiment.

FIG. 3 is a sectional view showing a rotation braking state of the embodiment.

FIG. 4 is a cross-sectional view showing a state in which the disc carrier according to the embodiment is attached and detached.

[Explanation of symbols]

 1 Disc 2 Turntable 4 Hook 5 Drive Unit 6 Disc Conveying Body 7 Moving Mechanism 8 Freezing Means 10 Contacting Body 12 Control Circuit

Claims (3)

[Claims] 1. A disk carrier movably supported between a disk removable position and a disk reproducing position, and the disk only during a period in which the disk carrier moves from the disk reproducing position to the disk removable position. A disc reproducing apparatus comprising braking means for braking rotation of a disc held by a carrier. 2. A disk carrier which is movably supported between a disk removable position and a disk reproducing position, and the disk only when the disk carrier moves from the disk reproducing position to the disk removable position. A disc reproducing apparatus comprising an elastic body that comes into contact with a disc held by a carrier. 3. A disk carrier which is movably supported between a disk loading / unloading position and a disk reproducing position, a disk driving device for rotating the disk, and a disk driving device which allows the disk driving device to be finely movable. And a contact member that contacts the disk held by the disk drive device only while the disk carrier moves from the disk reproducing position to the disk detaching position. Disc playback device.