JP2524191Y2 - Disk drive device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive, and more particularly to a mechanical reinforcement structure of a chassis thereof.

[0002]

2. Description of the Related Art FIG. 4 shows only a main part of the internal structure of a floppy disk drive. The metal chassis 40 has side walls 41 and 42 on both sides, one end of which is opened for insertion and removal of a floppy disk 43 indicated by a dashed line, and a motor 45 for driving a carriage assembly 44 is installed at the other end. Support wall 46. 4
Reference numeral 7 denotes a rotor for driving the floppy disk 43 to rotate. On the lower surface side of the chassis 40, a printed circuit board (not shown) on which a predetermined circuit necessary for the device is mounted
Is mounted on the printed circuit board.
A direct drive motor for driving the motor is also provided.

The carriage assembly 44 includes an upper support plate 44-1 having an upper head (not shown) for recording and reproduction on the upper surface side of the floppy disk 43, and a lower head for recording and reproduction on the lower surface side of the floppy disk 43. And a lower support plate 44-2 having the following. The upper head and the lower head are each a flexible wiring board 4
It is connected to the circuit of the printed wiring board via 8, 49.

[0004]

[Problem to be Solved by the Invention] By the way, the chassis 4
No. 0 has been made by die-casting so far, and there is no problem in mechanical strength. However, since the chassis formed by die-casting is relatively expensive, it is desired to manufacture a metal plate by punching and bending. However, punching and bending of a metal plate has the problem that sufficient mechanical strength cannot be obtained. Since the chassis is made of a metal plate with a large thickness, the weight increases, resulting in a reduction in thickness and weight. Had a disadvantage. For example, when a thin metal plate is used, the side walls 41 and 42 in FIG. 4 are easily deformed in the plane direction, and it is necessary to provide some reinforcement. The present invention is intended to solve such a problem, and provides a reinforcing structure capable of obtaining sufficient mechanical strength even when using a chassis formed by punching and bending a metal plate using a thin plate. The task is to

[0005]

According to the present invention, a chassis is formed by forming bent walls which are opposed to each other on both sides by bending a metal plate, a disk drive mechanism is provided at an intermediate portion of the chassis, and one end portion is provided. A disk drive device comprising a carriage assembly for recording and reproducing data on and from a disk, and a metal frame attached to both sides of the disk drive device. A first reinforcing portion which is provided along the both side portions, and which comes into contact with the inner surface side of the bent wall at a position corresponding to the intermediate portion through a notch provided at the base of the bent wall; A second end of a tongue contacting the outer surface of the bent wall and a tongue contacting the inner surface of the bent wall at one end closer to the disk drive mechanism. Characterized in that it has a reinforcing portion.

[0006]

The frame in the present invention acts as a reinforcing member for mutually reinforcing the chassis. In particular, the first and second reinforcing portions reinforce the bent walls on both sides of the chassis against deformation in the surface direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. Referring to FIG. 1 which is an exploded view, a chassis 10 is formed by punching and bending a metal plate. That is, the left and right side walls 11 and 12, a bent portion 13 at one end serving as an entrance and exit of a floppy disk, and a support wall 15 for mounting a motor 14 for driving a carriage assembly (not shown) are formed by bending. ing. The support wall 15 is formed by making a cut in a root portion at the other end of the side walls 11 and 12 and raising it.

Prior to the above-mentioned bending process, windows 11-1 and 11 are cut and raised at an intermediate portion between side walls 11 and 12.
In addition, a hole 15-1 for inserting the screw drive shaft 14-1 of the motor 14 and a screw hole 14- for screwing the motor 14 into the support wall 15 are provided.
2a, 14-2b, projections 14-3a, 1 by drawing
4-3b and the like are provided. Projections 14-3a, 14-
3b has the same height as the thickness of the flange 14-2 of the motor 14, and includes the flange 14-2 and the protrusions 14-3a and 14-3a.
-3b and screws 17a, 17b with screw holes 14-2a, 1b so that washers 16a, 16b are interposed therebetween.
The motor 14 is mounted by being screwed into the 4-2b. The chassis 10 is also provided with holes 19-1 (only one is shown) for inserting a tongue piece of a frame, described later, at the roots of the side walls 11, 12 corresponding to the windows 11-1, 12-1. The chassis 10 is provided with holes and notches for various purposes, particularly on its main surface, but is not shown here.

A frame 20 (only one of which is shown) is attached to portions of the chassis 10 corresponding to the side walls 11 and 12 for reinforcement. The frame 20 is provided on the side wall 12.
A tongue piece 20-1 used as a first reinforcing portion abutting on the inner surface side of the side wall 12 through a hole similar to the above-described hole 19-1 provided at the root portion of A tongue piece 20-2 abutting on the inner surface side and a tongue piece 20-3 abutting on the outer surface side of the side wall 12;
20-3 functions as a second reinforcing portion. Frame 20
Has screwing tongues 20-4, 20-5, and 20-6 having holes for abutting the main surface of the chassis 10 to screw the chassis 10 and the printed wiring board.

[0010] The chassis 10 is further provided at the other end portions of the side walls 11 and 12 with a reinforcing plate 2 extending between them.
1 is attached. That is, the reinforcing plate 21
Are screwed to mounting pieces 11-2, 12-2 having screw holes provided at the upper edges of the other ends of the side walls 11, 12. The reinforcing plate 21 has extension members 21-1 and 21-2 extending at right angles to the main surface thereof, and these extension members 21-1 and 21-2 are used as receiving members when packing the product. It has the function of

FIG. 2 shows a state where the frame 20 and the reinforcing plate 21 are assembled to the chassis 10. Chassis 10
Is that the side walls 11 and 12 are easily deformed in the surface direction, and in particular, the other ends of the side walls 11 and 12 are easily deformed by cutting and raising the support wall 15. However, at the other end, the deformation is prevented by the reinforcing plate 21 on the upper side, and the tongue pieces 20-2, 20 which alternately contact the inner side and the outer side also on the lower side. -3 prevents deformation. Further, at the intermediate portion between the side walls 11 and 12, deformation is prevented by the interaction between the tongue piece 20-1 and the tongue piece 20-3 which are in contact with the inner surface side. Moreover, the frame 20
The deformation itself is prevented by being integrally assembled to the chassis 10 by screwing. The chassis 1
A cover is attached to the cover 0 so as to cover it from above, but is not shown here.

FIG. 3 is a view of the state in which the printed wiring board is combined with the chassis 10 as viewed from the direction of arrow A in FIG. The printed wiring board 30 has connectors 31 and 32 for transmitting and receiving signals to and from external devices outside the support wall 15 in addition to mounting a predetermined circuit. The printed wiring board 30 is attached to the chassis 10 with the tongue piece 20-4 of the frame 20 therebetween with screws 33,
There are also places where the screw is directly screwed to the chassis 10 without passing through the frame 20. 34 is a spacer.

[0013]

As described above, in the present invention, the chassis made of a thin metal plate is reinforced by interposing a frame having a reinforcing portion therebetween, so that the chassis is made of a thin metal plate. It is possible to provide a disk drive device which can be provided by an inexpensive manufacturing method by punching and bending a plate, and in which the chassis is not deformed by a drop or other impact at the time of shipping or transporting the product or during use.
Further, the weight and thickness of the disk drive device can be easily reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a disk drive device according to the present invention, showing only main components thereof.

FIG. 2 is a perspective view after the chassis, the frame, and the reinforcing plate shown in FIG. 1 are assembled.

FIG. 3 is a diagram illustrating an assembled state of a chassis, a frame, and a printed wiring board as viewed from the other end side of the chassis.

FIG. 4 is a perspective view showing only main components of a conventional disk drive device for explaining the same.

[Explanation of symbols]

 10, 40 Chassis 11, 12, 41, 42 Side wall 14, 45 Motor for driving carriage assembly 15 Support wall 20 Frame 21 Reinforcement plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A chassis formed by forming bent walls facing each other on both sides by bending a metal plate, a disk drive mechanism at an intermediate portion of the chassis, and a disk drive for recording / reproducing a disk at one end. And a metal frame is attached to both sides of the chassis, and the frame is provided along the both sides of the chassis with a screw portion to the chassis. And a first reinforcing portion that abuts on the inner surface side of the bent wall through a notch provided at the base of the bent wall at a position corresponding to the intermediate portion, and the carriage assembly has On the near end, a second reinforcing portion is provided by a tongue piece abutting on the outer surface side of the bent wall and a tongue piece abutting on the inner surface side of the bent wall. Disk drive device.