JP2002100175A - Magnetic recording device - Google Patents

Abstract

(57) [Problem] To provide an inexpensive and highly reliable magnetic recording device. SOLUTION: A holder 7 for holding a magnetic recording medium,
The holder 7 is mounted so as to be movable in parallel with the direction of insertion of the magnetic recording medium, and the holder 7 is moved up and down from a slide plate 6 that moves in a direction perpendicular to the direction of insertion of the magnetic recording medium, and a chassis that holds the slide plate 6. Holding parts 2 to 5 which pass through the slide plate 6,
The slide plate has a shape with notches 2e to 5e in the vicinity of the portion where the end face of the penetrating portion contacts. Thereby, the burrs A generated when the slide plate 6 is cut can be escaped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording device used for an external storage device such as a computer.

[0002]

2. Description of the Related Art In a conventional magnetic recording apparatus, the shape of the holding portion of this slide plate is disclosed in Japanese Utility Model Publication No. Hei 6-749.
As described in Japanese Patent Laid-Open Publication No. 5 (1999) -2005, the shape of the holding portion of the slide plate provided on the chassis does not have a shape in which burrs on the end surface of the slide plate have escaped.

[0003]

In the conventional magnetic recording apparatus, burrs generated during press molding on the end surface of the slide plate exceed the width of the upper and lower receiving portions of the holding portion provided on the chassis. There has been a problem that the sliding plate cannot be slid or a force required to move the slide plate increases.

[0004] Further, there is a problem that the holding portion of the chassis is shaved by the burr and shavings are generated, and the shavings may damage the magnetic recording medium or enter a gap between the sliding portions. Had caused the problem of slipping.

The burr generated by the press is further increased by the wear of the mold due to the number of presses of the mold.
Therefore, in order to suppress the influence of the burr, it is necessary to shorten the life of the mold or to frequently maintain the mold. Further, although it is possible to crush the burrs by providing a step of crushing the burrs in the mold, it is not possible to completely remove the burrs, and there is a problem in that the mold becomes larger by the number of steps and the cost increases.

[0006]

According to the present invention, there is provided a magnetic recording apparatus comprising: a slide plate for moving a holder for holding a magnetic recording medium in a direction perpendicular to a direction in which the magnetic recording medium is inserted;
A chassis having a holding portion for holding the slide plate, wherein the slide plate has a plurality of through holes, and the holding portion of the slide plate has a tip holding portion that penetrates the through hole of the slide plate. The slide plate holds both sides of the slide plate, and has a notch at a position where an end face of the through hole of the slide plate contacts.

With this configuration, the slide plate holding portion has a shape that escapes the burr side of the end surface of the slide plate.
Even if burrs are generated on the end surface of the slide plate, the burrs will not rub against the holding part to generate metal powder, increase the sliding force, or make it not move, and ensure stable sliding. Can be. In addition, since the step of crushing the burrs on the end face of the mold for the slide plate is not required, the number of steps can be reduced, so that it is possible to make the mold with an inexpensive and small mold. Furthermore,
With the reduction in the number of steps, the press itself can be reduced in size, so that it can be realized at low cost.

Further, in the magnetic recording apparatus of the present invention, the dimension indicating the size of the shape of the notch is equal to or larger than the thickness of the chassis.

[0009] With this configuration, the strength of the mold forming the cutout can be ensured, and the life of the mold can be extended. Furthermore, since this strength can be ensured, the mold that forms this shape can be made into an integral structure, and burrs generated at the mold division can be prevented.

Further, in the magnetic recording apparatus of the present invention, the notch has upper and lower holding surfaces of the holding portion which are in contact with and held on both sides of the slide plate, and a notch of the slide plate which is in contact with the end surface of the through hole. It is provided at a corner formed by a left-right position regulating surface that regulates the position in the left-right direction.

[0011] With this configuration, the portion that receives both surfaces of the slide plate (the upper and lower holding surfaces of the holding portion that is held in contact with both surfaces of the slide plate) can be made closer to the left / right position regulating surface, so that the width of the holding portion can be reduced. Therefore, a hole in the chassis that cuts the holding portion can be reduced, and a decrease in the strength of the chassis can be reduced.

[0012]

Next, a magnetic recording apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of the magnetic recording apparatus.
In FIG. 1, the chassis 1 of the magnetic recording apparatus is provided with holding portions 2, 3, 4, and 5 for holding the slide plate 6. Further, the magnetic recording device has a holder 7 for holding a magnetic recording medium 8 above the slide plate. The holder 7 is moved up and down by the slide plate 6. As shown in FIG. 1, the holding portions 2 to 5 are formed by being cut and raised from the chassis 1. 2A to 2E are cross-sectional views of the holding unit. FIGS. 2A to 2E are cut and raised from the chassis 1, penetrate the slide plate 6,
The shape of the holding parts 2-5 which hold | maintain the upper and lower surfaces of the slide plate 6 is each shown. The slide plate 6 has a plurality of through holes. The holding portions 2 to 5 of the slide plate 6 have tip holding portions 9 that pass through the through holes of the slide plate 6.
The upper surface of the slide plate 6 is held by the upper holding surfaces 2a to 5a of the upper and lower holding surfaces of the holding units 2 to 5 through the through holes of the slide plate 6, respectively. The lower surface side of the slide plate 6 is held by the lower surface holding surfaces 2b to 5b. The left and right positions of the slide plate 6 are regulated by position regulating surfaces (left and right position regulating surfaces) 3c, 5c and 3d, 5d. FIG. 2E is a diagram for explaining the occurrence of burrs.
As shown in FIG. 2 (e), when the pressing direction of the slide plate 6 is B,
Burrs A in the direction (downward in the drawing) are generated.

As shown in FIGS. 2 (a) to 2 (d), in the present invention, since the burrs are escaped, the holding portions 2 to 5 are provided at the portions where the end faces of the through holes of the slide plate 6 contact. Notches 2e to 5e are provided. The cutout portions 2e to 5e of the burr relief can be provided not only on the lower surface side but also on the upper surface side. In the embodiment shown in FIG. 3, the notch e of the burr relief is arranged symmetrically with respect to the center axis of the thickness of the slide plate 6 so that the mold has a well-balanced shape.

Usually, the burr generated by pressing is 10% or less of the thickness of the plate. It is also known that the shape of the notch e is desirably equal to or greater than the plate thickness from the viewpoint of the die strength of the press. In the present invention, since the shape of the notch e is equal to or greater than the thickness of the chassis 1, the strength of the mold can be sufficiently ensured, and the life of the mold can be extended. In the embodiment of the present invention, the holding part is formed by cutting and raising the slide plate 6 from the chassis 1 having a thickness of 1 mm, and the size of the burr relief part is R = 1.

FIG. 4 is a partial sectional view of another holding portion of the present invention. In FIG. 4, the notch e of the burr escape has a corner formed by the lower surface side holding portion b and the left position regulating surface d as an approximate center (in terms of shape, the notch is located below the left and right position regulating portion). (So that the shape enters). In other words, the notch e is provided on the lower surface side holding surface b of the holding portions 2 to 5 which hold the slide plate 6 in contact with both surfaces.
And a left position regulating surface d that regulates the leftward position of the slide plate 6 in contact with the end face of the through hole of the slide plate 6. In the above description, the corner between the lower surface holding surface b and the left position regulating surface d has been described. Of course, the corners of the upper surface holding surface a and the right position regulating surface c (see FIG. 2) are notched with burrs. A part can also be provided. Accordingly, the holding surface b can be brought closer to the position regulating surface d by an amount that allows the notch e to enter the opposite side of the holding surface b above and below the position regulating surface d,
The size of the entire holding section can be reduced. Therefore, the hole of the chassis 1 that cuts the holding portions 2 to 5 can be reduced, and the strength of the chassis 1 can be prevented from being reduced.

When the notch e is arranged at the corner, the amount of contact of the left and right position regulating surfaces d with the slide plate 6 is reduced accordingly. In the present invention, this reduction amount is set to be equal to or less than half the thickness of the slide plate 6 to prevent the position regulation from being deteriorated due to, for example, dripping of the slide plate 6 by pressing.
Generally, press sag occurs at about 10% of the plate thickness, and increases with the wear of the mold. Reduced amount to half of plate thickness
If the following conditions are satisfied, a sufficient receiving surface can be ensured even if the sagging surface becomes large due to mold wear or the like.

Next, the operation of the magnetic recording apparatus of the present invention will be described with reference to FIG. When the magnetic recording medium 8 is inserted into the holder 7, the cam of the slide plate 6 moves up and down between the attachment / detach position and the load position for reading and writing magnetic recording according to the back and forth movement of the slide plate 6. The slide plate 6 is held and positioned by holding portions 2 to 5 cut and raised from the chassis 1 and can only move back and forth. The operation of pushing the slide plate 6 (the operation of lifting the holder 7 to the attachment / detachment position) is performed by the operator pressing a button (not shown) attached to the front of the slide plate 6. Usually, about 30,000 times the magnetic recording medium is taken in and out.

The press die for producing the slide plate 6 gradually wears as the production quantity increases, and burrs generated on the cut surface gradually increase. If the burr becomes large, the thickness of the slide plate 6 becomes apparently large. Therefore, if the distance (width) between the upper and lower holding surfaces of the holding portions 2 to 5 exceeds the gap (width), assembly is impossible if there is no burr escape e. It becomes possible. However, if a burr escape is provided as in the present invention,
Irrespective of the size of this burr, it can be stably received up and down with the width of the plate thickness. Further, when the burrs are received by the holders 2 to 5, it is possible to prevent a problem of generation of dust such as shaving due to burrs, falling off of burrs, and a problem of heavy forward and backward movement due to the shaving. Can be.

[0020]

As described above, the present invention has a slide plate for moving a holder for holding a magnetic recording medium in a direction perpendicular to the direction in which the magnetic recording medium is inserted, and a holding portion for holding the slide plate. In a magnetic recording device having a chassis, the slide plate has a plurality of through holes, and the holding portion of the slide plate has a tip holding portion that passes through the through hole of the slide plate, and holds both surfaces of the slide plate. Since the slide plate holding portion has a notch at a position where the end surface of the through hole portion of the slide plate is in contact with the end surface of the slide plate, the burr is formed on the end surface of the slide plate. Even if it does, the burrs will not rub against the holding part to generate metal powder, increase the sliding force, or prevent it from moving. The process of crushing the burrs on the end face of the plate mold is not required, and the number of processes can be reduced, so that it is possible to create with a cheap and small mold. Since the device itself can be made compact, it is possible to provide a magnetic recording device that can be realized at low cost.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a magnetic recording apparatus according to the present invention.

FIGS. 2A to 2D are cross-sectional views of a holding portion according to the present invention; FIG.

FIG. 3 is a cross-sectional view of another holding unit of the present invention.

FIG. 4 is a cross-sectional view of still another holding portion of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chassis 2, 3, 4, 5 Holding part 2a-5a Upper side holding surface of sliding plate of holding part 2b-5b Lower side holding surface of sliding plate of holding part 3c, 5c Left regulating surface of sliding plate of holding part 3d 5d Right regulating surface of the slide plate of the holding portion 2e to 5e Notch portion of the holding portion 6 Slide plate 7 Holder 8 Magnetic recording medium 9 Tip holding portion of the holding portion A Burr B Press direction of the slide plate b Slide plate of the holding portion D Holding surface of the slide plate of the holding part d Escape of the burr of the slide plate of the holding part (notch)

Claims (3)

[Claims] 1. A magnetic recording apparatus comprising: a slide plate for moving a holder for holding a magnetic recording medium in a direction perpendicular to an insertion direction of the magnetic recording medium; and a chassis having a holding portion for holding the slide plate. The slide plate has a plurality of through holes, the holding portion of the slide plate has a tip holding portion that penetrates through the through holes of the slide plate, holds both sides of the slide plate, A magnetic recording apparatus comprising a notch at a position where an end face of a through hole of a plate contacts. 2. The magnetic recording apparatus according to claim 1, wherein the size indicating the size of the shape of the notch is equal to or greater than the thickness of the chassis. 3. The notch portion restricts the position of the slide plate in the left-right direction by contacting the upper and lower holding surfaces of the holding portion contacting and holding both surfaces of the slide plate and the end surface of the through-hole portion. 3. The device according to claim 1, wherein the corner is formed by a left and right position regulating surface.
The magnetic recording device according to the above.