JPH01185872A - Disk loading device - Google Patents

Abstract

PURPOSE:To enable a disk to be taken out under the lowering time of supply voltage by providing the voltage lowering detecting circuit of voltage impressed on a loading motor and cancelling the housing lock of a loading tray then the supply voltage is lowered. CONSTITUTION:A lock member 30b locking the loading tray 12 housed in a device main body 11, a lock cancellation member 20a cancelling the housing lock and the voltage lowering detection circuit 35 of the voltage impressed on the loading motor 15 are provided. Then, the tray 12 is prevented from being locked under the lowering time of the supply voltage driving the device main body by detecting the lowering of the voltage, cancelling the housing lock of the tray 12 and enabling the tray to be taken out with the aid of manual operation. Thus, the disk 13 can be taken out from the loading tray and housed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disk loading device in which a disk-shaped information recording medium such as a compact disk is placed and stored in the device, and read and played.

BACKGROUND OF THE INVENTION In recent years, disc loading devices that utilize motor power have come into widespread use, ranging from stationary sets that use an AC power source to portable CD radio-cassette players that use a DC power source such as dry batteries.

A conventional disc loading device will be described below with reference to the drawings.

FIGS. 7 and 8 are front views of a conventional disk loading device, with the loading tray coming out toward the front in the drawing. FIG. 7 shows a state in which a disc is being loaded, and FIG. 8 shows a state in which a performance is being performed.

1 is the main body of the apparatus, and 2 is a loading tray.

Reference numeral 3 denotes a disk holder, which constitutes a loading tray, on which a disk 4 is placed and which moves up and down. 5
is a turntable, e is a clamper arm, and 7 is a clamper that clamps the disk 4 with the turntable 5 using a magnet or the like. A clamper arm 6 is rotatably provided on the device main body 1. 8 is a traverse, an optical pickup (not shown), a turn tape/L/
6th place! 7 and is attached to the main body 1 of the device.

The operation of the disc loading device configured as described above will be explained below.

When the disc 4 shown in FIG. 7 is placed on the loading tray 2, that is, the tray placed on the disc holder 3 is loaded by the motor, the disc holder 3 is placed so that the disc 4 can pass over the turntable 6.
is rising, and the clamper arm 6 is also rising so that the clamper does not hit the disc 4. In FIG. 8, after the loading tray 2 is stored in the main body 1 of the apparatus, the disk holder 3 is lowered using the overstroke of the loading tray retracting member, and the disk 4 is placed on the turntable/L15, and at the same time the clamper The arm 6 descends and the clamper clamps the disk 4. At this time, the loading tray 2 is locked so that the tray cannot be loaded or ejected while the disc is still in the clamped state.

Problems to be Solved by the Invention However, with the above configuration, when a consumable power source such as a dry battery is used to load a tray, play a disc, or perform a performance, the voltage drops due to battery consumption. If the voltage drops below the voltage that allows the loading tray to be ejected, the loading tray will be locked so that it cannot be ejected during play, i.e. when the disc is clamped, to protect the traverse and the disc. It cannot be discharged. Therefore, there was a problem that the disc could not be taken out and stored in a storage case or the like.

In view of the above-mentioned problems, the present invention provides a disc loading device that unlocks the loading tray and ejects the tray before the voltage drops even when the power supply voltage drops, making it possible to take out the disc. It is something to do.

Means for Solving the Problems In order to solve the above problems, the disc loading device of the present invention includes a locking member for locking a loading tray housed in the main body of the device, a lock release member for releasing the storage lock, and a loading tray. It is equipped with a voltage drop detection circuit for the voltage applied to the motor, and when the power supply voltage that drives the loading motor drops, the storage lock of the loading tray is released and the loading tray can be manually pulled out.

Effect of the Invention With the above-described configuration, the present invention uses a release means to release the storage lock immediately before the power supply voltage drops and the voltage drops below the voltage at which the loading tray can be ejected. Rotate in the opposite direction for a predetermined period of time to release the disk clamp and release the storage lock of the loading tray. Thereafter, the tray is ejected by manually pulling out the loading tray, and the disc can be taken out and stored in a disc case or the like.

Embodiment Hereinafter, a disc loading device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the loading tray ejected state of the disc loading device of the present invention.

In FIG. 1, 11 is the main body of the apparatus, 12 is a loading tray, and 13 is a disk. The loading tray 12 is guided by guide pieces 14a to 14f and accommodated in the apparatus main body 11. 16 is a loading motor, 16 is a motor gear, and 17 is a reduction gear A11.
8 is a reduction gear B. 19. is a drive rack, which meshes with the small diameter gear portion of the reduction gear B18. A drive rack 19 slides on the back side of the loading tray 12, and this drive rack is provided with a drive gear 2°. The drive gear 20 meshes with a tray rack 12a formed on the back surface of the loading tray 12.

FIG. 2 is a partially sectional front view showing a state in which the device is loading a disc, and the loading tray is loaded and stored from the front side to the back side of the figure. In FIGS. 1 and 2, 21 is a traverse.

22 is an optical pink-up for optical signal reading;
23 is a turntable, and 24 is a spindle motor for rotating the turntable. The traverse 21 is placed on a cantilevered rotating member 27 about a shaft 26 via a floating rubber 25. An elevating pin 28 is caulked to the rotating end of the rotating member 27, and is engaged with an elevating member 29. The rack portion formed on the elevating member 29 is also engaged with the aforementioned drive gear 2°, and slides on the device main body 11, and the rotating member is also moved by the slope portion provided at the portion that engages with the elevating pin 28. 27 is raised and lowered.

3o is a drive-control lever, which is biased counterclockwise by a biasing spring 31. Locking members 30a and 30b integrally formed on the drive control lever are adapted to engage with the ends of the elevating member 29 and the tray rack 12a, respectively. Further, the slope portion 30c provided at the end of the drive control lever 3o is engaged with the lock release member 20a which also serves as the rotation center axis of the drive gear described above, and the loading tray 12 is accommodated, and the drive rack 19 is also accommodated. When pulled in, the slope portion 30c is moved clockwise by the lock release member 20a against the biasing spring 31, and the lock member 3ob with the drive control lever 30 is engaged with the tray rack 12a (loading tray Lock 12.

A clamper 32 is rotatably held on a clamper arm 11a on the apparatus main body 11, and clamps the disk 13 on the turntable 23. 33 is a loading tray storage detection switch, and 34 is an ejection detection switch. Further, 35 is a voltage drop detection circuit, and the voltage applied to the loading motor 16 is
This circuit rotates the loading motor, detects that the voltage reaches a preset minimum voltage at which the loading tray 12 can be ejected, and rotates the loading motor 16 in the row 4s tray ejection direction for a predetermined period of time.

The operation of the disc loading device configured as described above will be explained below with reference to FIGS. 1 to 6.

First, FIGS. 3 and 4 are plan views showing the internal components centering on the loading tray locking member when the loading tray is housed in the main body of the apparatus. FIG. 3 shows the state before the disk is clamped, that is, the traverse is not raised, and FIG. 4 shows the state in which the traverse is raised and the disk is clamped. 5 is a partially sectional front view of the state shown in FIG. 4, and FIG. 6 is a partially sectional side view of the state shown in FIG.

In FIG. 1, the loading tray 12 is pulled out.
When the disk 13 is placed on top and the tray is pulled in, the loading motor 16 rotates, and the motor gear 16 pulls the drive rack 19 into the apparatus main body 11 via the reduction gears 17 and 18. At this time, the drive gear 20 on the drive rack 19 is such that the elevating member 29 is connected to the drive control lever 30.
Since the tray rack 12a is locked so that it cannot be slid by the locking member 30a, the tray rack 12a is
In other words, the loading tray 12 is pulled into the main body 11 of the apparatus.

Next, in FIG. 3, when the loading tray 12 is pulled into the apparatus main body 11, the drive rack 19
is pulled in to the position shown in the figure, and the central shaft of the drive gear 20, that is, the lock release member 20a pushes the slope portion 30c of the drive control lever 3o, and the lock portion 30a is raised and lowered by slightly turning the drive control lever 3o clockwise. Member 29
to unlock.

At this time, the other locking member 3ob is not yet engaged with the tray rack 12&, so the loading tray 12 is not locked.

In the state shown in FIG. 3, the loading tray 12 is not locked by the locking member 30b, but since the loading tray 12 is housed in the apparatus main body 11 and is attached to a stopper, the tray rack 12a meshed with the drive gear 2o cannot move. However, the other elevating member 29 that is engaged with the drive gear 20 is now drawn into the apparatus main body 11.

As the loading motor 16 continues to rotate from the state shown in FIG. 3, the drive rack 19 is further drawn into the device, and at the same time, the lock release member 20a further pushes the slope portion 30cf and the drive control lever is turned clockwise. Then, the locking member 30b engages with the tray rack 12a, and the loading tray 12 is stored and locked.

In addition, in the state shown in Fig. 3, as shown in the front view of Fig. 2,
The traverse 21 is not yet in the disc clamp state. That is, the lifting pin 28 at the rotating end of the rotating member 2 on which the traverse 21 is placed has not reached the lifted position because the lifting member 29 has not yet been driven.

Next, FIG. 4, FIG. 5, and FIG. 6 will be explained. When the loading motor 16 continues to rotate from the state shown in FIG. 3, the drive rack 19 is retracted, and the tray rack 12
Since a is locked, the elevating member 29 meshed with the drive gear 20 is drawn into the apparatus main body 11. The elevating member 29 moves to a position where the storage detection switch 33 is pressed and stops. At this time, in the side view of FIG. 6, the lifting member 2
9 moves and the slope portion 29a provided on the elevating member 29
The lifting pin 28 of the rotating member 2 engaged with the slope portion 29a
It is lifted up and the traverse 21 ascends. As shown in the front view of FIG. 6, the disk 13 is lifted by the turntable 23, and as the disk 13 separates from the loading tray 12, it is moved to a position where the clamper 32 is lifted up and clamped. The clamper 32 is separated from the clamper arm 11a and rotates together with the disk 13.

The operation of loading the disk and storing it in the loading tray has been described above, and next, the slow ejection operation will be explained.

By rotating the loading motor 16 in the opposite direction to when the loading tray is housed, the drive rack 19 is moved in the ejection direction from the state shown in FIG. At this time, in the state shown in FIG. 4, the tray rack 12a is locked by the locking member 3ob, and the loading tray does not perform the ejection operation yet. The drive rack 19 is ejected and the tray rack 12
Since a is fixed, the elevating member 29 is driven by the drive gear 2o and moved in the ejection direction.

The elevating member 29 reaches the position shown in FIG. 3 and stops.

At this time, the elevating pin 28 is lowered by the slope portion 29a provided on the elevating member 29, that is, the traverse 21 is lowered, and the disk clamp is released. The disc clamp is released when the lifting member 29 reaches the position shown in FIG.
The lock between the tray rack 12a and the tray rack 12a is released. Since the elevating member is in the state shown in FIG. 3 and cannot be moved any further due to the stopper, the tray rack 12 is now driven and the loading tray performs the ejecting operation.

Store the disk for loading here.

If a battery is used as a power source to drive and play a device when playing a disc for a long period of time, the battery voltage will drop as the battery wears down. A voltage drop detection circuit 36 connected to the loading motor 16 detects that the voltage applied to the loading motor 15 has reached a preset minimum voltage that can rotate the loading motor 15 and eject the loading tray 12. is detected, and at that point, the loading motor 16 is rotated for a predetermined period of time in the opposite direction to that when the loading tray is housed. As the loading motor 16 rotates, the drive rack 19 is moved in the ejection direction, the drive gear 2o drives the elevating member 29 in the ejection direction, and the traverse 21fj! : Lower the disk to completely release the disk clamp, and also completely release the lock between the locking member 30b on the drive control lever 30 and the tray rack 12a.

By unlocking the tray rack 12a,
The loading tray is driven by the loading motor 15, and at the same time can be manually pulled out.

As described above, according to this embodiment, there is provided a locking member that locks the loading tray housed in the apparatus main body, a locking member that releases the storage lock, and a voltage drop detection of the voltage applied to the loading motor. Equipped with a circuit,
Detects a voltage drop and releases the storage lock of the loading tray, making it possible to manually pull out the loading tray. This prevents the loading tray from being unable to be ejected even when the power supply voltage drops to drive the entire device, and the disc can be removed from the loading tray. It can be taken out and stored.

In this embodiment, the locking member sob is a tray rack 12a integrally provided with the loading tray 12.
Tray rack 1
2a may be omitted, and a gold film of the retaining member may be separately applied to the loading tray 12.

Effects of the Invention As described above, the present invention provides a loading tray on which a disc is placed and stored in the device main body, a loading motor that fully drives this loading tray, and a lock that locks the loading tray stored in the device main body. a member, a lock release member for releasing the storage lock by the lock member, and a voltage drop detection circuit for the voltage applied to the rope and the ing motor, and when the power supply voltage drops,
By completely releasing the loading tray storage lock and making it possible to manually pull out the loading tray.

The system completely prevents the loading tray from being unable to eject even when the power supply voltage that drives the main unit drops, and the disc can be removed from the loading tray and stored in the disc case. The equipment used is very effective.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a disc loading device according to an embodiment of the present invention in a loading tray ejected state, FIG. 2 is a partially sectional front view of a disc loading state, and FIG.
The figure is a plan view mainly showing the internal components in a state where the loading tray is stored but before the disc is clamped. Figure 4 is a plan view showing the internal components in a state where the loading tray is stored but the disc is not clamped. FIG. 5 is a partial cross-sectional front view of FIG. 4, FIG. 6 is a side view of the partial component rIMli of FIG. 4, and FIG. 7 is a plan view of the conventional disk loading device during disk loading. FIG. 8 is a partially sectional front view showing the disc being clamped and deflated after the disc has been stored. 11...Device body, 12...Loading tray, 13...Disc, 16...
...Loading motor, 20a...Lock release member, 30b...Lock member, 35...
...Voltage drop detection circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person11
- Equipment main body 12 - Roach isoji tray 13 - Naizuku fan 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A device main body, a loading tray on which a disc is placed and stored in the device main body, a loading motor that drives this loading tray, a locking member that locks the loading tray stored in the device main body while a disc is being played; It is equipped with a lock release member that releases the storage lock by the member and a voltage drop detection circuit for the voltage applied to the loading motor, and when the power supply voltage that drives the loading motor drops, the storage lock of the loading tray is released and the loading is performed. A disc loading device characterized in that a tray can be manually pulled out.