JP2594749Y2 - Magnetic disk drive - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk drive, and more particularly to a cover for preventing dust.

2. Description of the Related Art A magnetic disk drive in which a magnetic disk cartridge is inserted and used is provided with a dustproof cover.

[0003] This type of magnetic disk device is generally
The front bezel is exposed on the surface of the personal computer main body, and the magnetic disk drive main body is assembled and used in a state of being housed inside the personal computer. For this reason, the cover is usually made of a thin metal plate having a thickness of about 0.5 mm.

However, when the magnetic disk drive is mounted on the personal computer using an assembling robot, the cover is easily recessed even when the hand of the assembling robot grips the magnetic disk drive with a relatively strong force. We need to make sure that If the cover is dented, the cover presses a part of the magnetic head carriage and damages the magnetic head carriage.

[0005]

2. Description of the Related Art FIG. 5 shows a schematic configuration of a conventional magnetic disk drive 10.

Reference numeral 11 denotes a chassis, 12 denotes a slider, 13 denotes a holder, and 14 denotes a cover.

Reference numeral 15 denotes a part of the magnetic head carriage, which protrudes above the holder 13.

The cover 14 is fixedly attached on both sides to the rising walls 11 _a and 11 _b on both sides of the chassis 11, and covers the upper part of the holder 13.

Reference numeral 16 denotes a front bezel having a magnetic disk cartridge insertion slot 17 into which a magnetic disk cartridge is inserted.

[0010] the holder 13, in response to sliding of the slider 12, moves up and down between a high position P ₁ shown in FIG. 5, a low position P _2, usually located at a high position P _1.

There is a space 18 between the cover 13 and the holder 13 located at the high position P ₁ . In this space 18,
A part of the magnetic head carriage device 15 is housed.

The cover 14 is only fixed on both sides and has no support in between.

[0013]

Consider a case in which the assembling robot grips the magnetic disk device 10 by, for example, sandwiching the center of the magnetic disk device 10 from above and below in FIG.

When the hand of the assembling robot grips with the force F, the cover 14 is pressed by the hand and is relatively easily depressed as shown by reference numeral 19 in FIG.

If the cover 14 is dented, the cover 14 may press the magnetic head carriage device 15 to deform or damage it.

Accordingly, an object of the present invention is to provide a magnetic disk drive which solves the above-mentioned problems.

[0017]

According to the first aspect of the present invention, a chassis provided with a magnetic head carriage device is provided on the chassis so as to be vertically movable between a high position and a low position. Is located at the above high position, a holder for holding the inserted magnetic disk cartridge,
A magnetic disk drive having a slider slidably moving the holder up and down by sliding, and a plate-like cover fixed on both sides to the chassis and covering an upper part of the holder. In the upper surface of the holder,
When the holder is located at the high position, a projection having a size substantially in contact with the lower surface of the cover is provided.

According to a second aspect of the present invention, in the first aspect, the protruding portion has a cut-and-raised portion formed by cutting and raising a part of the holder.

[0019]

According to the present invention, the projection supports the lower surface of the cover to prevent the cover from being pushed in and dented.

According to the second aspect of the present invention, the projection formed by the cut-and-raised portion acts so that no component for the projection is required.

[0021]

2 to 4 show a magnetic disk drive 50 according to an embodiment of the present invention. FIG. 1 schematically shows the magnetic disk drive 50 of FIGS.

The magnetic disk drive 50 includes a magnetic disk drive main body for a 5-inch disk cartridge (hereinafter referred to as a 5-inch magnetic disk drive main body) 51 and a magnetic disk drive main body for a 3.5-inch magnetic disk cartridge (hereinafter referred to as 3). (It is called the magnetic disk drive body for .5 inch)
52, a front bezel 5 having an insertion port 53 for a 5-inch magnetic disk cartridge 40 and an insertion port 54 for a 3.5-inch magnetic disk cartridge 41.
5 is attached.

The 5-inch magnetic disk drive main body 51
As shown in FIG. 3, a chassis 56 made of die-cast
It has a general configuration in which a magnetic disk rotation motor 57, a magnetic head carriage device 58, and a magnetic disk clamp device 59 are assembled. The 5-inch magnetic disk device main body 51 does not have a top plate (cover).

3.5 inch magnetic disk drive main body 52
As shown in FIG. 1 and FIG.
, A slider 71, a holder 72, and a cover 73. The holder 72 and the slider 71 have a size corresponding to the 3.5-inch magnetic disk cartridge 41.

The holder 72 holds the inserted 3.5-inch magnetic disk cartridge 41.

The slider 71 has X ₁ , X
_The holder 72 is slidably provided in _two directions, and slides to move the holder 72 up and down.

The holder 72 includes a high position P ₁₀ shown in FIGS. 1 and 3, between a lower position P ₁₁ approaching the chassis 70, are vertically movable.

The high position P ₁₀ is a position for receiving the magnetic disk cartridge or a position for detaching the magnetic disk cartridge, and has a height corresponding to the insertion opening 54 of the front bezel 55.

The low position P ₁₁ is the position for mounting the magnetic disk cartridge.

The chassis 70 has projections 77 and 78 projecting outward from holder holders 75 and 76 for supporting the holder 72, and is wider than the holder 72. Approximately the same width W
_{With one} .

The chassis 70 is provided with a motor 80 for rotating a 3.5-inch magnetic disk and a magnetic head carriage device 79.

The upper arm portion 79 _a of the magnetic head carriage assembly 79 is engaged with the part of the holder 72, a portion of the upper arm portion 79 _a is protruded upward from the holder 72.

The chassis 70 has raised side walls 70 _a ,
It has a 70 _b.

The cover 73 is made of a galvanized steel sheet having a thickness of 0.5 mm, and is formed on both sides of the chassis 70 on both sides.
0 _a and 70 _{b, which} are fixed and attached to the upper surface of the chassis 70 and the upper surface of the holder 72.

Because the chassis 70 is wider than usual, the span (width) of the cover 73 is longer, and the cover 73 is easily bent.

3.5-inch Magnetic Disk Unit 52
The mounting feet 81 projecting from both sides of the chassis 70 are screwed with screws 82 and fixed on the chassis 56 of the 5-inch magnetic disk device main body 51.

Next, the main part of the present invention will be described.

In FIGS. 1, 3, and 4, reference numeral 100 denotes a projection, which is formed to project upward from the center of the holder 72.

The protruding portion 100 comprises a cut-and-raised portion 101 formed by pressing a part of the holder 72.
It is integrally molded.

The cut-and-raised portion 101 extends in the width direction of the holder 72 indicated by Y ₁ and Y ₂ , and the cut-and-raised portion 101 having a trapezoidal arch shape is long in the width direction of the holder 72. It has a flat portion 102 of a.

The projecting distance b from the upper surface of the holder 72 of the projecting portion 100 (cut-and-raised portion 101), the dimensions c between the holder 72 and the cover 73 when located at the higher position P _10, i.e., flat space It is a value equal to the thickness dimension of 103.

The normal state of the magnetic disk device 50 is a state where the holder 72 is located at a high position P _10.

In this state, the protrusion 100 supports the cover 73 by just abutting against the lower surface of the central portion of the cover 73.

For this reason, the hand of the assembling robot grips, for example, the central portion of the magnetic disk device 50 in the thickness direction, and even if the force F is applied in FIG. Is effectively limited by the protrusion 100.

[0045] Thus, the cover 73 is pressed against the upper arm 79 _a of the magnetic head carriage assembly 79, accident damage the upper arm portion 79 _a is prevented.

Further, the protrusions 100 can be provided at a plurality of positions of the holder 72. By doing so, the cover 7
The effect of preventing the dent deformation of No. 3 is greater than in the case where the protrusion 100 is provided at one position.

The provision of the projection 100 is particularly effective when the cover 73 is wide.

[0048]

As described above, according to the first aspect of the present invention, in handling by an assembling robot, etc.
Even if the cover is pressed strongly, it is possible to prevent the cover from being seriously depressed, thereby preventing the inconvenience of damaging the magnetic head carriage device.

According to the second aspect of the present invention, it is possible to eliminate the necessity of a component as a protrusion, thereby reducing the manufacturing cost of the magnetic disk device.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a magnetic disk drive according to an embodiment of the present invention.

FIG. 2 is a diagram showing a magnetic disk drive according to an embodiment of the present invention with a cover partly cut away;

FIG. 3 is an exploded perspective view of the magnetic disk drive of FIG. 2;

FIG. 4 is an exploded perspective view of the 3.5-inch magnetic disk device main body in FIG. 3;

FIG. 5 is a schematic front view of a conventional magnetic disk drive.

FIG. 6 is a diagram for explaining a problem to be solved by the magnetic disk device of FIG. 5;

[Explanation of symbols]

405 Magnetic disk cartridge for 5 inch 41 Magnetic disk cartridge for 3.5 inch 50 Magnetic disk device 51 Magnetic disk device main body for 5 inch magnetic disk cartridge 52 Magnetic disk device main body for 3.5 inch magnetic disk cartridge 53 5 inch magnetic disk cartridge Insertion hole for 3.5-inch magnetic disk cartridge 55 Insertion opening for magnetic disk cartridge 55 Front bezel 70 Chassis 70 _a , 70 _b Side wall 71 Slider 72 Holder 73 Cover 77, 78 Overhang portion 79 Magnetic head carriage device 79 _a Upper arm portion 80 Motor 81 Mounting Foot 82 Screw 100 Projection 101 Cut-and-raised part 102 Flat part 103 Flat space part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 33/12 313 G11B 17/04 401

Claims (2)

(57) [Scope of request for utility model registration] 1. A chassis provided with a magnetic head carriage device, and provided on the chassis so as to be vertically movable between a high position and a low position, and is usually located at the high position. A holder for holding the inserted magnetic disk cartridge; a slider slidably provided to slide the holder up and down; and a slider fixed to both sides of the chassis and provided above the holder. A magnetic disk drive having a plate-like cover that covers the upper surface of the holder, the upper surface of the holder being provided with a protrusion having a size substantially in contact with the lower surface of the cover when the holder is located at the high position. A magnetic disk drive characterized in that: 2. The magnetic disk drive according to claim 1, wherein the projection is formed by cutting and raising a part of the holder.