KR910000203Y1 - Floppy disk driver's head protect devices - Google Patents

Abstract

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Description

Floppy Disk Driver Head Protector

1 is a perspective view of a floppy disk driver with a head protection device of the present invention.

2 and 3 are longitudinal cross-sectional view showing the configuration and operation of the head protection device of the present invention, Figure 2 is a longitudinal cross-sectional view showing a state in which the disk is inserted.

3 is a longitudinal sectional view showing a state in which a disk is compressed.

* Explanation of symbols for main parts of the drawings

2: base plate 4: hub

6: crimping cone 10: shaft pin

11: receiver 12: shaft pin

13: torsion spring 16: extension

17: Desket 18: Limited Edition

19: support piece

The present invention relates to a head protection device of a floppy disk driver (FDD), which is a kind of computer auxiliary memory device, and especially when a diskette having a floppy disk is inserted into the main body. A head protector which prevents abrasion by the jacket of the desket.

The floppy disk driver (hereinafter referred to as "FDD"), a computer auxiliary memory device that requires a high degree of precision, is a device that allows infinite amount of data exchange because it exchanges the deskew. .

Therefore, FDD has a risk of damage in the direct contact portion of the desket due to the friction caused by frequent insertion and removal of the desket. Especially, if the head which inputs / outputs the data is damaged by the descatting, the data is recorded. And inaccurate reproduction.

Therefore, in order to improve the reliability of the product, a device for protecting the head by detaching the head from the desket and contacting only during input / output operation is known in the related art, but the conventional head protection device is one of the upper and lower magnetic heads. It was used exclusively for the upper head and required a complicated electrical and mechanical structure for contact and release processes.

In order to protect the lower head from the descatter, it is necessary to move the desquet to the lower part. However, since the lower head is structurally fixed head is used, it is difficult to design a device to protect the lower head. No technique for protecting the head has been proposed.

The present invention has been made in view of the above-described conventional problems, and the desket is inserted or removed by adding a simple configuration to one side of the crimping cone driving receiver for pressing the desquet to the hub of the spindle motor. When the upper head and the lower head is prevented from being contacted to protect the head from wear due to the outer shell of the desket, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the main board 1 has a hub of a spindle motor (not shown) exposed through the through hole 3 of the base plate 2 fixed to the upper side thereof. 4) and the guide rod (5) is fixed to both sides of the through hole (3) of the base plate (2), and the crimping cone (6) is adhered to the middle of the guide rod (5) by the shaft pin (7). Inserting the elevating plate (9) which is downwardly supported by the one spring (8) to move up and down, the receiver 11 is attached to the shaft piece (10) fixed to the base plate (2) by the shaft pin (12) and torsion Both sides of the elevating plate 9 are inserted between the vertical support shafts 14 and 15 formed on both sides of the front end portion of the receiver 11 while being upwardly supported by the spring 13. 11) integrally formed extension sections 16 having a predetermined length on the inner side of the edges, and restrict insertion of the desket 17 at the ends of the soft joints 16. The restriction piece 18 is bent downward, and at the end of the restriction piece 18, the support piece 19 on which the lower surface of the desket 17 is up-pressed is bent in parallel with the extension section 16. Reference numeral 20 is a head carriage that can be transported on the guide rod 20 fixed to the main board 1, and the lower magnetic head 21 is fixed to the front end thereof, and the protrusion 23 is supported on the support 22 fixed to the upper surface. The rear end of the head arm 24 having the front end is connected to the leaf spring 25, and the upper magnetic head 26 is fixed to the lower surface of the front end of the head arm 24.

27 is a receiver shaft, the rear end of which is supported by a axial support 28 fixed to the main board 1, and the front end of which is inserted into a shaft hole formed in the front plate 29 to be rotated by the handle 30. In the middle of the receiver shaft 27, a press cam 31 for pressing down the receiver 11 is fixed.

When explaining the effect of the present invention made as follows.

2 shows a state in which the desket 17 is ejected. In this case, as the receiver 11 is supported upward by the spring 13, the extension section 16 and the support piece 19 are moved. Since the projection 23 of the head arm 24 is supported upward and the extension section 16 is in contact, the elastically installed head arm 24 of the head carriage 20 is lifted upwards and accordingly the head arm ( The upper magnetic head 26 fixed to the distal end of 24 is moved upward.

In this state of FIG. 2, when the desket 17 is inserted between the base plate 2 and the main board 1 through the insertion hole 32 formed in the front plate 29, the inner portion of the desket 17 is removed. Is inserted while being guided to the support piece 19 of the extension section 16, so that it is inserted without being in contact with the upper and lower magnetic heads 21 and 26.

Therefore, the upper and lower magnetic heads 21 and 26 are excluded from the coupling that is damaged by the outer shell of the desket 7.

In the state of FIG. 2, when insertion of the desket 17 is completed, as shown in FIG. 3, the receiver shaft 27 is rotated by the knob 30 and the pressing cam 31 pushes the receiver 11 downward. As the) moves downward, the extension section 16 and the support plate 19 are also moved downward, so that the desket 17 is seated on the hub 4, and the lifting plate 9 is lowered to depress the pressing cone 6. The skate 17 is pressed against the hub 4.

In this state, when the spindle motor (not shown) is rotated to perform a predetermined recording or reproducing, and the ejector 17 is to be taken out in the stopped state, the pressing cam of the receiver shaft 27 with the handle 30 is pressed. Rotating 31 in the reverse direction returns the receiver 11 to the state of FIG. 2 as the receiver 11 rotates upward by the restoring force of the spring 13, in which the upper and lower magnetic heads 26, 21 are depressed. The desket 17 can be taken out without being worn because it is spaced apart from the skate 17.

The present invention as described above has the advantage that it is very simple to add a configuration to the receiver to completely prevent the wear damage of the magnetic head caused during insertion and removal of the desket. Therefore, it contributes greatly to improving the reliability of FDD.

Claims (1)

A crimp cone (6) for crimping the desket (17) having the floppy disk embedded therein into the hub (4) of the spindle motor is provided, and the rear end of the receiver (11) for driving the crimp cone (6) is provided with a base plate (2). The extension section 16 is extended to the shaft 10 by the shaft pin 12, the upper side of the receiver 11 is upwardly carried out by the torsion spring 13, and the extension section 16 is formed on the inner side of the receiver 11. The restricting piece 18 of the restrictor 17 is bent downward at the end of the delimiter 17, and the supporting piece 19 of which the lower surface of the deket 17 is in contact with the end of the restricting piece 18 extends. Head protection device for a floppy disk driver, characterized in that bent parallel to (16).