JPH0540977A - Day clothing equipment - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a disk loading device for applying an external magnetic field to a disk by a bias magnet and reversing the magnetization of the disk to perform writing to the disk. The structure ensures that it can be performed. A bias magnet 7 is slidably attached to a disc tray 3, and when the bias magnet 7 comes into contact with an obstacle such as a chucking mechanism 6 when the disc tray 3 moves horizontally, the bias magnet 7 stops moving horizontally, Only the disc tray 3 is horizontally moved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called rewritable disc loading apparatus for recording a signal on a disc by applying an external magnetic field by a bias magnet to cause reversal of magnetization, and more particularly to a so-called rewritable disc loading device. The loading is made easy.

[0002]

2. Description of the Related Art When a disc is inserted into a disc tray, the disc tray moves horizontally and vertically from the disc unloading position to the disc loading position on the chassis, and when it reaches the disc loading position, a chucking mechanism is provided. Is activated, the disc is chucked on a turntable, and a bias magnet is loaded above the disc by a bias magnet loading mechanism using a link mechanism or the like and is placed below the disc. When the temperature of the disc is locally raised by irradiating a laser beam from the optical device (pickup) that is present,
There is known a disk loading device in which the coercive force at that portion is reduced and the magnetization is inverted by the external magnetic field of the bias magnet to record a signal on the disk.

[0003]

By the way, in the above-mentioned conventional disk loading device, the structure of the disk loading device is complicated because the structure is such that the bias magnet is loaded by the bias magnet loading mechanism using the link mechanism or the like. However, there is a drawback that the cost becomes high.

In order to solve the above drawbacks, it is possible to attach a bias magnet to the disc tray and load the bias magnet together with the disc tray.
When a bias magnet is attached to the disc tray, if the bias magnet contacts an obstacle such as a chucking mechanism during horizontal movement of the disc tray, the disc tray cannot be moved further in the horizontal direction. There is.

The present invention solves the above-mentioned conventional problems and can move the disc tray toward the disc loading position or the disc unloading position even when the bias magnet attached to the disc tray contacts the chucking mechanism. It was done like this.

[0006]

DISCLOSURE OF THE INVENTION A bias magnet is horizontally moved to a disc tray which accommodates a disc and moves the disc horizontally and vertically between a disc unloading position and a disc loading position. Mounted so that the bias magnet slides toward the chucking mechanism side by the spring force of the spring, and when the disc is loaded or unloaded, the disc tray moves horizontally to chuck the bias magnet. Mechanism or
When contacting an obstacle arranged in the vicinity thereof, the bias magnet is prevented from moving, and only the disc tray is moved horizontally against the spring force of the spring.

[0007]

When the disc tray moves horizontally during loading or unloading of the disc and the bias magnet provided on the disc tray contacts an obstacle such as a chucking mechanism, the bias magnet remains and the disc tray remains. Only the horizontal moves and carries the disc to the loading or unloading position.

[0008]

The present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a disc loading device of the present invention. The disc loading device 1 supports a disc tray 3 into which a disc 2 is inserted and a disc tray 3 which is movable in horizontal and vertical directions. Chassis 4 and a chucking mechanism 6 provided on the chassis 4 for chucking the disc 2 in the disc tray 3 onto the turntable 5 when the disc tray 3 moves to the disc loading position.
A bias magnet 7 positioned on either one of the upper and lower surfaces of the disk 2 chucked on the turntable 5 by the chucking mechanism 6, and an optical device section 8 facing the bias magnet 7 via the disk 2. Is prepared.

The bias magnet 7 is attached to the disc tray 3 so as to be slidable in the horizontal movement direction of the disc tray 3, and the bias magnet 7 is moved toward the chucking mechanism 6 by the spring force of the spring 9. When the disc tray 3 moves horizontally when the disc is unloaded,
When the bias magnet 7 comes into contact with an obstacle such as a chucking mechanism, the movement of the bias magnet is blocked, and only the disc tray 3 moves in the horizontal direction against the spring force of the spring 9. It is designed to return to the loading position. Reference numeral 10 is a disc tray drive operation plate for moving the disc tray 3.

The disk 2 is housed in a cartridge 21 and is configured as a so-called disk cartridge.

As shown in FIG. 3, the cartridge 21 is provided with a notch window 22 for introducing a bias magnet and an optical device portion provided on the lower surface thereof, and a turntable and chucking for introducing it. Notch window 23,
A shutter 24 for opening and closing the cutout windows 22, 23, shutter opening and closing members 25, 25 provided on both side surfaces for opening and closing the shutter 24, positioning holes 26, 26 penetrating the upper and lower surfaces, and positioning of these. Recesses 27, 27 for fitting the catch roller are provided side by side with the holes 26, 26.

When the cartridge 21 is inserted into the disc tray 3, as shown in FIG. 1, the shutter opening / closing member operating lever 31 provided on the inner surface of the disc tray 3 presses the shutter opening / closing member 25. The shutter 24 is automatically opened.

The disc tray 3 has a pair of left and right U-shaped rail members 32, 3 as shown in FIGS.
3 and a connecting plate 34 that connects the pair of U-shaped rail members 32 and 33 with their open end sides facing each other.
The cartridge insertion port 35 is formed at one end.

A support pin 36 provided at the end of the cartridge insertion port 35 outside the rule members 32 and 33 and at the end opposite to the cartridge insertion port 35 (hereinafter referred to as the rear end). , 36, the chassis 4 described next
The disc tray support plates 41, 41 can be attached.

Further, the chassis 4 is made of aluminum alloy or the like in a flat plate shape, and the disc tray support plates 41, 41 are erected on both sides, and between the disc tray support plates 41, 41. A turntable 42 and a spindle motor 43 for driving the turntable are arranged on the upper surface of the central portion of the.

Positioning pins 44, 44 of the disc cartridge are provided upright on both sides of the upper surface of the chassis 4 near the disc tray support plates 41, 41.

When the disc tray 3 moves from the disc unloading position to the disc loading position, the positioning holes 26, 26 provided in the cartridge 21 are provided with the positioning pins 44,
44 is fitted to position the cartridge 21, and the disk 2 in the cartridge 21 is rotatably mounted on the turntable 42.

The disc tray support plates 41, 4 are also provided.
1 are arranged outside the rail members 32 and 33 of the disc tray 3, and these disc tray support plates 41 and 41 have support pins provided on the outer surfaces of the rail members 32 and 33 of the disc tray 3. Tray guide holes 45 and 46 into which 36 and 36 are inserted, and a pair of front and rear operation plate guide holes 47 and 48 for guiding the slide of the disc tray drive operation plate 10 described below are provided.

The tray guide holes 45 and 46 are composed of horizontal hole portions 45a and 46a and vertical hole portions 45b and 46b connected to the horizontal hole portions 45a and 46a, and the horizontal hole portions 45a and 46a. Support pins 36, 3 at one end of the
6 is positioned, the disc tray 3 is supported at the disc unloading position, and the vertical hole portions 45b, 46 are formed.
When the support pins 36, 36 are located at the lower end of b, the disc tray 3 is supported at the disc unloading position.

The disc tray drive operation plate 10 for moving the disc tray 3 is a metal plate having a predetermined thickness and is formed in a rectangular shape elongated in the lateral direction.
A rack 101 is formed on the upper end surface, and a pair of front and rear support pins 10 projecting toward one side surface is formed near the upper end surface.
2, 103 are provided.

The pair of support pins 102 and 103 are also provided.
A pair of front and rear cam holes 104 and 105 for moving the disc tray 3 are formed below the.

Then, the disc tray drive operation plate 1 is provided.
By inserting the pair of front and rear support pins 102 and 103 into the pair of front and rear operation plate guide holes 47 and 48 provided in the disc tray support plates 41 and 41, 0 is attached to the outer surface of the disc tray support plates 41 and 41. The support pins 36 are mounted so as to be slidable in the front-rear direction and are provided on the outer surfaces of the rail members 32, 33 of the disc tray 3,
The tip of 36 is inserted into the pair of front and rear cam holes 104, 105 through the tray guide holes 45, 46 provided in the disc tray support plates 41, 41.

The cam holes 104 and 105 are inclined long hole portions 104a and 105a, and these inclined long hole portions 104 are formed.
a and 105a, the first horizontal holes 104b and 105b continuously provided at the upper ends of the a and 105a, and the long holes 104a and 105a.
The second horizontal hole portion 104 continuously provided at the lower end of a
c, 105c.

The first horizontal hole portions 104b and 105b are formed at substantially the same height as the horizontal hole portions 45a and 46a of the tray guide holes 45 and 46 of the disc tray support plates 41 and 41, respectively. The second horizontal hole 104c,
105c is formed at the height position of the lower ends of the vertical hole portions 45b, 46b of the tray guide holes 45, 46 of the disc tray support plates 41, 41.

Then, the disc tray drive operation plate 1 is provided.
When 0 is slid to the direction of the cartridge insertion opening 35 of the disc tray 3, the first horizontal hole 1
04b and 105b, the support pin 36 of the disc tray 3,
36 is located and the disc tray 3 is held at the disc unloading position. From this state, when the disc tray drive operation plate 10 is slid in the direction opposite to the cartridge insertion port 35, the slanted elongated holes 104a, 105 are formed.
The vertical wall surfaces 104d and 105d provided at the upper end of a contact the support pins 36 and 36 of the disc tray 3 to horizontally position the tray guide holes 45 and 46 provided on the disc tray support plates 41 and 41. Holes 45a, 46a
Along the vertical holes 45b and 46b.

When the support pins 36, 36 come to the positions of the vertical holes 45b, 46b, the support pins 36, 36
The vertical holes 45b, 4 of the disc tray support plates 41, 41 are formed by the slanted long holes 104a, 105a.
When the disc tray 3 is pushed down along 6b and reaches the disc unloading position, the support pins 36, 36 are fitted into the second horizontal holes 104c, 105c, and the disc tray 3 is moved to the disc unloading position. It will be held in.

The chucking mechanism 6 is a top plate 6 mounted between the upper portions of the disc tray support plates 41, 41.
1, a chucking plate 62 made of a magnet arranged in the center of the top plate 61, a link mechanism 63 for moving the chucking plate 62 up and down, and a link mechanism 63.
And a link operating lever 64 for operating.

The disc tray drive operation plate 1 is also provided.
When 0 slides in the disc loading direction,
One end of the link operating lever 64 is pressed by the inclined surface 107 of the lever operating portion 106 provided at one end of the disc tray drive operating plate 10, and the chucking plate 62 is lowered by the link mechanism 63 to move the disc 2 Is chucked on the turntable 42.

Next, the bias magnet 7 will be described.

The bias magnet 7 is formed in a rectangular parallelepiped shape as shown in FIG. 1, and the guide pin 7 provided on the lower surface thereof.
1, 71 are fitted in the guide long holes 39, 39 provided on the upper surface of the connecting plate 34 of the disc tray 3 so as to be slidable on the upper surface of the disc tray 3 in the horizontal movement direction of the disc tray 3. Has been.

In the disk unloading state shown in FIG. 1, the tip of the bias magnet 7 is pressed against the chucking mechanism 6 side by the spring force of the coil spring, and one end side 39a, 39a of the guide elongated hole 39, 39. Three
9a is substantially in contact with the guide pins 71, 71.

When the disc 2 is inserted into the disc tray 3 from the disc unloading state and the disc tray 3 is moved in the disc tray driving operation plate 10 in the disc loading direction, the guide elongated hole 3 is formed.
Due to the presence of 9, 39, only the disc tray 3 initially moves in the horizontal direction.

When the disc tray 3 moves horizontally to the ends of the horizontal hole portions 45a, 46a of the disc tray support plates 41, 41 on the vertical hole portions 45b, 46b side, the guide elongated holes 39, 39 are formed. The other ends 39b, 39b of the
Contacts the guide pins 71, 71 and slightly slides the bias magnet 7 in the horizontal direction to bring the bias magnet 7 and the chucking mechanism 6 out of contact with each other.

When the disc tray drive operation plate 10 is further moved, the disc tray 3 is moved to the disc tray support plate 4.
1, 41 vertically descends along the vertical holes 45b and 46b, and the disk 2 is loaded.
The bias magnet 7 faces the upper surface side of the disk 2 on the turntable 42 with a predetermined gap through a notch provided in the disk tray 3, and applies an external magnetic field to the disk 2.

Then, a laser beam is emitted from the optical device portion 8 arranged on the lower surface side of the disk 2,
The temperature of the disk 2 is locally raised to reduce the coercive force at that portion, and the magnetization is inverted by an external magnetic field to record a signal on the disk 2.

After the recording is completed, the magnetic field moves vertically upward, that is, the bias magnetic field 7 for raising the disc tray 3 also rises.

After that, the disc tray 3 moves horizontally toward the disc unloading position, and at this time, the bias magnet 7 causes the chucking mechanism 6 to move.
Even when the bias magnet 7 is prevented from moving due to contact with an obstacle such as the above, the disc tray 3 moves horizontally against the spring force of the spring 8 and reaches the disc unloading position.

In FIG. 4, 110 is a pinion meshing with the rack 101 provided on the disc tray drive operation plate 10, and the pinion 110 is rotated by a disc tray drive motor (not shown). It has become so.

Further, 111 and 111 are cartridges 21.
Is a lock arm (catch arm) that is fitted into the recesses 27, 27 provided on both sides of the upper surface of the disk tray to lock (catch) the cartridge 21. These lock arms 111, 111 are rail members of the disc tray 3. Three
A shaft 112 is rotatably attached to the rear end portions of the reference numerals 2 and 32, and a lock roller (first roller) 113 is rotatably attached to the tip of one end extending toward the cartridge insertion port 35 side. A slide roller (second roller) 114 is rotatably attached to the tip of the other end extending toward the opposite side of the cartridge insertion port 35 side.

The lock arms 111, 111 are springs 1.
The rotation force is applied by 15 and the lock roller 11
3 enters the disc tray 3, and the slide roller 114 is in a state of being lifted from the arm rotation permitting surface 49 provided on the disc tray support plates 41, 41.

When the disc cartridge 21 is inserted into the disc tray 3, the lock roller 113 is inserted.
Is pushed by the upper surface of the cartridge 21 and the spring 115
When the cartridge 21 is fully inserted into the disc tray 8 by escaping and turning against the spring force of the cartridge 2,
When the recesses 27, 27 provided in 1 reach the position of the lock roller 113, the lock roller 113 is fitted into the recesses 27, 27 by the spring force of the spring 115 to lock the cartridge 21. ..

Next, the operation of the disk loading device of the embodiment will be described.

When the cartridge 21 is inserted into the disc tray 3, the shutter opening / closing member operating lever 31 presses the shutter opening / closing member 26 to automatically open the shutter 25, and the recesses 27 provided on both sides of the upper surface of the cartridge 21. , 27 are engaged with the lock rollers 113 of the lock arms 111, 111 to lock the cartridge 21.
When the cartridge 21 is locked by the lock arms 111 and 111, the disc tray driving motor is turned on, and the pinion 110 rotates to move the disc tray drive operation plate 10.

When the disc tray drive operation plate 10 is moved, first, the slanted elongated hole portions 104a, 105a of the cam holes 104, 105 of the disc tray drive operation plate 10 are first moved.
The vertical guide walls 104d and 105d provided on the upper ends of the tray guide holes 45 and 46, respectively, which are provided on the disc tray support plates 41 and 41 so that the support pins 36 and 36 of the disc tray 3 are provided.
It is slid to one end of the horizontal hole portions 45a and 46a.

At this time, the bias magnet 7 pressed against the chucking mechanism 6 by the spring force of the spring 9 is slightly separated from the chucking mechanism 6.

When the disc tray drive operation plate 10 is further moved, the support pins 36, 36 of the disc tray 3 are moved to the disc tray support plate 4 by the inclined elongated holes 104a, 105a provided in the disc tray drive operation plate 10.
The tray guide holes 45 and 46 provided in the Nos. 1 and 41 are lowered along the vertical hole portions 45b and 46b, the disk 2 is placed on the turntable, and the chucking mechanism 6 chucks the disk 2.

Further, the bias magnet 7 descending together with the disc tray 3 faces the upper surface of the disc 2 with a predetermined gap through a notch window 22 for introducing the bias magnet formed in the cartridge 21, and applies an external magnetic field to the disc 2. Call.

Then, in this state, a signal is recorded on the disc by the optical device portion arranged on the lower surface side of the disc 2.

After the recording is completed, when the pinion 110 is rotated in the reverse direction by the disc tray drive motor, the disc tray drive operation plate 10 moves in the unloading direction, and first, the bias attached to the disc tray 3 and its upper surface. The magnet 7 is raised.

Further, when the disc tray drive operation plate 10 is moved, the disc tray 3 and the bias magnet 7 move horizontally, and the bias magnet 7 comes into contact with an obstacle such as the chucking mechanism 6 and the movement thereof is blocked. Then, only the disc tray 3 moves and returns to the disc unloading position.

[0052]

The disk loading apparatus of the present invention has the above-described structure, and the bias magnet is slidably attached to the disk tray, so that the bias magnet can be loaded together with the disk and the bias magnet can be loaded. Even if an object comes into contact with an obstacle such as a chucking mechanism, it is possible to horizontally move only the disk tray toward the disk unloading position.

[Brief description of drawings]

FIG. 1 is a plan view of a disc loading device of the present invention in a disc unloading state.

FIG. 2 is a plan view of the disc loading device of the present invention in a disc loading state.

FIG. 3 is a plan view of a disc cartridge.

FIG. 4 is an exploded perspective view of a main part.

[Explanation of symbols]

1 ... Disc loading device, 2 ... Disc, 3 ... Disc tray, 6 ... Chucking mechanism, 7 ... Bias magnet, 9 ... Spring.

Claims (1)

[Claims] 1. A bias magnet for writing a disc on a disc tray for accommodating the disc and moving the disc horizontally and vertically between the disc unloading position and the disc loading position. It is mounted so that it can slide in the moving direction, and the bias magnet is slid toward the chucking mechanism side by the spring force of the spring.When the disc is loaded or unloaded, the disc tray moves horizontally and the bias magnet chucks. When the king mechanism or an obstacle placed in the vicinity thereof is contacted, the bias magnet is prevented from moving, and only the disc tray is moved horizontally against the spring force of the spring. A disk loading device characterized by.