KR100269166B1 - Bias magnet loader of an optical magnetic disc drive - Google Patents

Abstract

PURPOSE: A loading device for a bias magnet is provided to reduce noise caused by an operation of the bias magnet, and to simplify manufacturing and assembling processes through simplifying a structure of the loading device. CONSTITUTION: In case of a holder(21) not storing a disk cartridge(26), a bias magnet(23) is maintained an unload state by repulsive force of springs(30,30'). Herein, the bias magnet is not excessively rotated but maintained in the unload state by hanging sills(28). By inserting the disk cartridge to the holder, a front end of the cartridge presses and rotates vertical portions of levers(24,24'). Then, the bias magnet is loaded toward a disk through a through hole(29).

Description

Bias Magnet Loading Device for Magneto-optical Disk Drives

1 is a perspective view showing a conventional bias magnet loading device,

2 is a perspective view schematically showing the loading device of the present invention;

(A) of FIG. 3 is a schematic diagram showing an unloading state of a bias magnet,

(b) is a schematic diagram showing the loading state.

* Explanation of symbols for main parts of the drawings

20,20 '： Guide frame 21 ： Holder

23: Bias magnet 24, 24 ': Lever

25,25 '： Pivot 26 ： Cartridge

27,27 ': Slot 28,28'

29: Through hole (of holder) 30,30 ': Spring

31,31 ： Fixed pin

The present invention relates to a bias magnet loading device of a magneto-optical disk drive, and in particular, the installation structure is improved so that the bias magnet is loaded by the contact of the disc cartridge at the time of loading and unloaded by the elasticity of the spring at the time of unloading. A bias magnet loading device for a magneto-optical disk drive.

A bias magnet is used to record information on the recording medium or to erase unnecessary information by using the generated electromagnetic field. When the bias magnet is employed in the magneto-optical disk drive, it is usually installed in close proximity to the recording medium to effectively use the electromagnetic field, and can be moved up and down by a predetermined loading device on the holder in which the cartridge containing the recording medium is inserted. Is installed.

In Fig. 1, a conventional loading device of a bias magnet is shown schematically. Reference numerals (10) and (10 ') are guide frames arranged in pairs, and between them, holders (11) into which the disc cartridges (16) are inserted are slidably installed back and forth by driving means (not shown). . A through hole (not shown) is formed in the upper surface of the holder 11 corresponding to the disc (not shown) exposed when the cartridge 16 is inserted into the holder 11, and the inclined long hole 12a is formed around the through hole. The formed guide 12 is fixedly installed.

And the bias magnet 13 is coupled to the inclined long hole (12a) guide pins (13a) provided on both sides of the bias magnet is installed so as to move up and down. The bias magnet 13 is hinged to one end of the guide bracket 14 and the other end of the guide bracket 14 is hinged to the support 15 fixed to the pair of guide frames 10 and 10 '. .

In the conventional loading device of the bias magnet 13 configured as described above, when the holder 11 accommodating the cartridge 16 is slid forward (arrow direction), the guide pin 13a is guided to the inclined long hole 12a and lowered. As the bias magnet 13 approaches the disk in the cartridge 16 housed in the holder 11, the loading of the bias magnet 13 is completed.

The unloading operation of the bias magnet 13 is performed in the reverse order of the loading operation.

The conventional bias magnet loading device having the configuration as described above is operated while the bias magnet 13 is supported by the guide bracket 14 connected between the fixed support 15 and the guide 12 being moved. Since the shape of the assembly error occurs when the bias magnet 13 is in contact with the guide 12 and when the guide pin 13a is guided to the inclined long hole (12a) there is a problem that noise is generated. In addition, since the guide bracket 14 is installed between the fixing member (support) and the moving member (guide), it is not only cumbersome to assemble its position, but also the holder 11 is lowered so that the disc cartridge 16 is turned into a spindle motor (not shown). ), When the hinge of the guide bracket 14 fixed to the support 15 is damaged.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a loading device which greatly reduces noise generation due to the operation of a bias magnet and simplifies its structure and simplifies manufacturing and assembly.

In order to achieve the above object, the present invention provides a bias magnet loading apparatus for a magneto-optical disk drive for driving a bias magnet installed on a holder into which a disk cartridge is inserted.

Having a horizontal portion and a vertical portion, the horizontal portion of which is connected to the bias magnet, the vertical portion of which is mounted on the holder by a predetermined elastic biasing means, and the vertical portion of the vertical portion penetrates the upper surface of the holder to contact the disc cartridge. It is installed so as to be, characterized in that it is provided with a lever that rotates in accordance with the insertion and ejection of the disc cartridge.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 schematically shows a device for loading a bias magnet according to the present invention. Reference numerals 20 and 20 'are guide frames, and a holder 21 for accommodating the disc cartridge 26 is provided so as to be slidable back and forth and up and down by a predetermined driving device (not shown). The configuration for loading and unloading the bias magnet 23 toward the disk (not shown) through the through hole 29 formed in the upper surface of the holder 21 is as follows.

First, a pair of "a" shaped levers 24 and 24 'having a horizontal portion and a vertical portion are provided, and each horizontal portion is hinged to both sides of the bias magnet 23, and each vertical portion is formed on the upper surface of the holder 21. The slots 27 and 27 are formed in the holders 21 through the holders 21, and the levers 24 and 24 'are pivoted on the upper surfaces of the holders 21 and 25, respectively. It is installed so that it can rotate by hinged to '). In addition, an elastic biasing means is provided in each vertical portion of the levers 24 and 24 'so that the bias magnet 230 is in an unloaded state when the cartridge 26 is not mounted.

As the elastic bias means, 31 and 31 'fixed to the upper surface of the holder 21 were installed to connect the vertical portions of the levers 24 and 24' with the springs 30 and 31. The elastic bias directions of the bars 24 and 24 'are provided so as to be opposite to the storage directions of the cartridges 26 accommodated in the holder 21. In order to prevent excessive unloading of the bias magnet 23 by the restoring force of the springs 30 and 30 ', a pair of engaging jaws 28 and 28' are formed at the edges of the through holes 29. It was.

The bias magnet loading device of the magneto-optical disk drive according to the present invention configured as described above operates as follows. First, as shown in FIG. 3A, when the disc cartridge 26 is not stored in the holder 21, the bias magnet 23 is unloaded by the restoring force of the springs 30 and 30 ′. In this case, the bias magnet 23 is not excessively rotated by the locking projections 28 and 28 'and always maintains a constant unloading state. As shown in FIG. 3B, when the disc cartridge 26 is inserted into the holder 21, the tip of the cartridge 26 is rotated by pressing the vertical portions of the levers 24 and 24 '. In this case, the bias magnet 23 is loaded close to the disk through the through hole 29.

As described above, in the bias magnet loading apparatus according to the present invention, unlike the conventional bias magnet 13 sliding along the inclined long hole 12a, loading and unloading are gradually performed, such as levers 24 and 24 '. The pressurization of the cartridge 26 and the loading and unloading time of the bias magnet 23 are shortened by the springs 30 and 30 '. In addition, in the conventional loading device, since the bias magnet 13 is operated in a state supported by the guide bracket 14 connected between the fixed support 15 and the guide 12 being moved, the bias magnet 13 when an assembly error occurs. Unlike when noise is generated when the guide pin 13a slides in the inclined hole 12a when the contact with the guide 12, the loading device of the present invention solves the problem because there are no components that slide in contact with each other. .

In addition, the loading device of the present invention can prevent damage to the parts, such as damage to the hinge portion of the guide bracket 14 fixed to the support 15, as all components are installed on the holder 21, and assembling You can do it easily.

As described above, the bias magnet loading device of the magneto-optical disk drive of the present invention is an effective invention for improving the quality of noise and component damage preventing products.

Claims (3)

In the bias magnet loading apparatus of the magneto-optical disk drive for driving the bias magnet 23 provided on the holder 21 into which the disk cartridge 26 is inserted, It has a horizontal portion and a vertical portion, the end of the horizontal portion is connected to the bias magnet 23, the vertical portion is coalesced in the holder 21 by a predetermined elastic bias means, the end of the vertical portion of the holder 21 It is installed so as to be in contact with the disk cartridge 26 through the upper surface, characterized in that it is provided with levers 24, 24 'for rotationally interlocking in accordance with the insertion and ejection of the disk cartridge 26 Bias magnet loading device for magneto-optical disk drive. The method of claim 1, The magnetizing magnets 28 and 28 'are formed in the holder 21 corresponding to the edge of the bias magnet 23, so that the bias magnet 23 is not excessively rotated. Drive bias magnet loading device. The method according to claim 1 or 2, The elastic biasing means is provided with fixing pins 31 and 31 'on the holder 21 to connect the vertical portions of the levers 24 and 24' with the springs 30 and 30 '. Bias magnet loading device of the magneto-optical disk drive, characterized in that the.