JPH10302452A - Disk driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to assemble a disk driving device in a short time and simply and to allow its structure inexpensive and compact by holding a disk driving unit freely attachably and detachably on a frame and fixing such disk unit to a frame so that the unit is protected from falling off the frame. SOLUTION: A disk driving unit 32 is engaged with and held on a frame 34, and an arm fitting part 46 and a unit fitting part 48 on a cushioning member 50, respectively. The arms 36, 38 of the frame 34 are each provided with a pair of projections 54 and fitted into a hole formed on an oppositely facing metallic plate, thereby positioning and fixing the disk driving unit 32 so that it is protected from falling off the frame 34. Consequently, the number of parts required for assembly can be reduced compared with the conventional technique, enabling reduction in the manufacturing cost, simplifying the assembling process, reducing the assembly man-hour, and also allowing the assembly in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a disk drive for driving a recording medium such as a magneto-optical disk or an optical disk, that is, a disk.

[0002]

2. Description of the Related Art Conventionally, as an example of this type of disk drive device, a magnetic disk device having a vibration proof structure as shown in FIGS. 6 (a) and 6 (b) is known. 1
No. 30783).

As shown in FIGS. 6 (a) and 6 (b), this device comprises a disk drive 2 for driving a magnetic disk (not shown), a base 4 for holding the disk drive 2, and A frame 6 for attaching the base 4 to a predetermined portion (for example, an external device such as a personal computer or an external case) is provided.

[0004] At four corners on the back side of the base 4 holding the disk drive unit 2, buffer members 8 for protecting the apparatus from external impact are fixed by screws. Frame 6
A substantially U-shaped fitting portion 6a that can be fitted into a fitting groove 8a formed in the buffer member 8 is formed at the four corners of the frame 6 by bending a sheet metal into a substantially U-shape. , 6b, 6c,
6d are provided.

The frame 6 is configured such that a control circuit board 10 for controlling the disk drive unit 2 is mounted thereon. In such a configuration, first, the fitting portions 6c and 6d of the frame 6 are fitted to the fitting grooves 8a of the cushioning member 8.
Then, the frame 6 is elastically deformed within the elastic range. Then, the base 4 can be temporarily fixed to the frame 6 by fitting the remaining fitting portions 6 a and 6 b into the fitting grooves 8 a of the cushioning member 8.

In the temporarily fixed state, the control circuit board 1
0 is set on the frame 6, the control circuit board 1
The mounting screws 14 are screwed into the screw holes 16 provided in the frame 6 through the four mounting holes 12 provided in the frame 6. As a result, the frame 6 can be fixed so that the frame 6 does not elastically deform and the base 4 does not fall off the frame 6. Then, by using the mounting holes 18 provided in the frame 6, the base 4 can be mounted on a predetermined portion (for example, an external device such as a personal computer or an exterior case).

By the way, the above-mentioned device has a cushioning member 8.
Is complicated, and the control circuit board 10 restricts the elastic deformation of the frame 6. Therefore, when an external impact is applied to the control circuit board 10, the control circuit board 10
That the control circuit board 1 may be damaged.
There were various problems such as the fact that there was no means for preventing electromagnetic radiation from zero.

Therefore, in order to solve such a problem, a disk drive device as shown in FIGS. 7 and 8 has been proposed (hereinafter referred to as conventional technology). FIG.
As shown in (c), the conventional disk drive device
The disk drive section 20 provided with the fitting section 20a, the frame 22 provided with the fitting section 22a at a portion facing the fitting section 20a, and the disk drive section 20 interposed between the disk drive section 20 and the frame 22 And a buffer member 24.

The cushioning member 24 is formed of an elastic material such as rubber, and has a cylindrical shape having a cross-shaped opening 24a formed in the center. In such a configuration, by fitting the fitting portion 20a and the fitting portion 22a into the openings 24a of the buffer member 24, the disk drive unit 20 is temporarily fixed to the frame 22 as shown in FIG. can do.

In this temporarily fixed state, the frame fixing member 26 is screwed to the free end of the frame 22 so that the free end of the frame 22 does not swing.
The frame 22 can be fixed by screwing the metal plate 8 and the electromagnetic radiation preventing metal plate 30 to the frame 22 (see FIG. 8B).

[0011]

However, in the above-mentioned conventional disk drive (see FIGS. 7 and 8),
A frame fixing member 26 for preventing the free end of the frame 22 from swinging is separately required, and the frame fixing member 26, the control circuit board 28, and the metal plate 30 for preventing electromagnetic radiation are fixed to the frame 22. Screws are required. As a result, not only does the number of parts of the entire apparatus increase, but also a separate machining process for screwing is required, resulting in a problem that the manufacturing cost of the apparatus increases.

Further, since the assembling operation of the apparatus by screwing or the like is complicated and requires a certain amount of time, there is a problem that it becomes difficult to efficiently assemble the apparatus.

Further, since a space for disposing the frame fixing member 26 and a space for screwing are separately required, a certain limitation is imposed on the compactness of the apparatus. The present invention has been made to solve such a problem, and an object of the present invention is to provide a low-cost and compact disk drive which can be easily assembled in a short time.

[0014]

In order to achieve the above object, a disk drive of the present invention comprises a holding means for detachably holding a disk drive unit for driving a disk on a frame, and the holding means. Fixing means for fixing the disk drive unit to the frame so that the disk drive unit detachably held by the frame does not fall off the frame.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a disk drive according to an embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1A to 1C, in the disk drive device of the present embodiment, a disk drive unit 32 for driving a recording medium such as a magneto-optical disk or an optical disk, that is, a disk, is detachably attached to a frame 34. The holding means for holding, and the disk drive unit 32 detachably held on the frame 34 by the holding means,
And fixing means for fixing the disk drive unit 32 to the frame 34 so that the disk drive unit 32 does not fall off.

The frame 34 applied to this embodiment is:
First and second arm portions 36, 38 extending parallel to each other and facing each other; and first and second arm portions 36, 3
8 and an arm connecting portion 40 for connecting the base ends to each other, and has a substantially U-shape as a whole.

The first and second arm portions 36 and 38 include:
At its free end and at the portion between this free end and the base end,
An electric board 58 (that is, the disk drive unit 3) described later
2 is provided with substrate receiving surfaces 42a and 42b on which an electric board on which a circuit system (not shown) for controlling the driving of the motor 2 is mounted;

The substrate receiving surfaces 42a and 42b are formed by partially turning the edges of the first and second arms 36 and 38 outward, respectively.
Mounting holes 44a and 44b are formed in the holes a and 42b.

The first and second arm portions 36 and 38
The first and second arm portions 36 and 38 respectively
There are provided a plurality of arm fitting portions 46 formed by folding a part of the side surface inward. Specifically, in the present embodiment, the first and second arm portions 36 and 38 include:
Each is provided with two arm fitting portions 46, and these arm fitting portions 46 are formed at positions facing each other. Note that these four arm fitting portions 46 can be one configuration of the holding means of the present invention.

The disk drive unit 32 applied to the present embodiment has a plurality (4 in this embodiment) provided at positions facing the arm fitting portions 46 described above.
) Unit fitting portions 48. In addition, these unit fitting parts 48 can be one configuration of the holding means of the present invention.

In such a configuration, when holding the disk drive unit 32 on the frame 34, the arm fitting portion 46 and the unit fitting portion 48 may be fitted to the buffer member 50. Note that the buffer member 50 can be one configuration of the holding means of the present invention.

More specifically, as shown in FIG. 1B, the cushioning member 50 applied to the present embodiment is formed of an elastic material (shock absorbing material) such as rubber, and has a cross shape in the center. Is formed in a cylindrical shape in which the opening 50a is formed. Then, by fitting the arm fitting portion 46 and the unit fitting portion 48 so as to intersect with the cross-shaped opening 50a, as shown in FIG.
2 can be temporarily fixed to the frame 34.

As shown in FIG. 1C, the disk drive unit 32 includes a flexible substrate on which a signal detector, a laser, and the like (not shown) are mounted. By screwing to the screw portion 52 provided on the arm portion 36), the ground of the disk drive unit 32 with respect to the frame 34 can be strengthened.

As shown in FIGS. 1 (a) to 1 (c),
The first and second arms 36 and 38 are provided with a pair of protrusions 54 protruding along the side surfaces of the first and second arms 36 and 38, respectively. By fitting these protrusions 54 into a plurality of fitting holes 62a, 62b, 62c (see FIG. 2B) formed in a metal plate 60 described later, the disk drive unit 32 falls off the frame 34. The disk drive unit 32 can be positioned and fixed to the frame 34 so as not to be disturbed. Each of the projections 54 of the first and second arm portions 36 and 38 and the plurality of fitting holes 62a, 62b,
62c can be one configuration of the fixing means of the present invention.

In such a configuration, for example, FIG.
By using a thin metal piece 56 as shown in FIG.
Can be further strengthened. Note that a pair of holes 56a and 56b extending parallel to each other are formed in the sheet metal piece 56 applied to the present embodiment.

More specifically, as shown in FIGS. 1 and 3A, one hole 56a of the sheet metal piece 56 is lightly pressed into the unit fitting portion 48 of the disk drive unit 32 and the other hole 56a. 56b is connected to the first and second arm portions 36, 3
8 is lightly pressed into the protrusion 54. Then, in this state, the arm fitting portion 46 and the unit fitting portion 48 may be fitted into the opening 50a of the buffer member 50. As a result, the unit fitting portion 48 and the protruding portion 54 are electrically connected via the thin metal piece 56. In this case, each hole 56a, 5
6b can be easily assembled only by lightly press-fitting 6b, and the thin metal piece 56 is
Since it is made of a thin metal material, the buffer effect is not impaired.

The disk drive unit 32 is connected to a frame 34
After being temporarily fixed to the electric board 5, as shown in FIG.
8 is placed on the substrate receiving surfaces 42a and 42b of the frame 34. In this case, since the electric board 58 is formed with openings 58a at positions opposed to the four protrusions 54 of the frame 34, each protrusion 54
protruding from a.

Subsequently, as shown in FIG. 2B, a metal plate 60 for preventing electromagnetic radiation is placed on the electric board 58. Fitting holes 62a, 62b, and 62c are formed in the metal plate 60 at locations facing the above-described protruding portions 54, and the protruding portions 54 protruding from the openings 58a of the electric board 58 are formed. The corresponding fitting holes 62a, 62b, 62c can be fitted.

In the present embodiment, the metal plate 60 applied to the present embodiment has first to third fitting holes 62a, 62a, 6b.
2b, 62c and a rectangular opening 64 are formed. Of the four projecting portions 54 projecting from the opening 58a of the electric board 58, one projecting portion 5 at the upper right in FIG.
4 protrudes from the rectangular opening 64 without being fitted, and the remaining three protruding portions 54 form first to third fitting holes 62a,
62b, 62c.

Here, three projections 54 projecting from the opening 58a of the electric board 58 and the first to third fitting holes 62 are provided.
a, 62b, and 62c are shown in FIG.
This will be described with reference to FIGS. 3 (b) and 3 (c). The protruding portions 54 applied to the present embodiment each have a chamfered end portion 54a, and the first to third fitting holes 6a are provided.
2a, 62b, and 62c can be smoothly press-fitted.

FIGS. 2 (b) and 3 (b) show the protrusion 5
4 shows a fitting state between the first fitting hole 62a and the first fitting hole 62a.
As is apparent from FIG.
When press-fitted into 2a, the fitting piece 66 of the first fitting hole 62a is elastically deformed and slightly lifted by a frictional force between the side wall of the protrusion 54 and the like. In this case, since the elastically deformed fitting piece 66 functions as a stopper, it becomes difficult for the protruding portion 54 to easily fall out of the first fitting hole 62a. As a result, the position of the frame 34 in the Y direction with respect to the metal plate 60 is fixed.

On the other hand, FIG. 2 and FIG.
4 shows a fitting state between the second and third fitting holes 62b and 62c. As is apparent from FIG.
Is press-fitted into the second and third fitting holes 62b and 62c, the second force is applied to the second fitting holes 62b and 62c by a frictional force between the second and third fitting holes 62b and 62c.
The fitting pieces 68 of the third fitting holes 62b and 62c are elastically deformed and slightly lifted. In this case, since the elastically deformed fitting piece 68 functions as a stopper, the protruding portion 54 becomes difficult to easily come out of the second and third fitting holes 62b and 62c. As a result, the frame 34 with respect to the metal plate 60 is held so that the free end of the frame 34, that is, the free ends of the first and second arm portions 36 and 38 do not swing in the X direction.
Are fixed in the X direction.

By fitting the three projecting portions 54 into the first to third fitting holes 62a, 62b, 62c, the disk drive unit 32 is prevented from falling off the frame 34. The unit 32 can be positioned and fixed to the frame 34.

In addition, the disk drive device of the present embodiment can simultaneously operate the electric board 5 with the above-described fitting process.
8 is configured. FIG.
As shown in (a) and (b), the metal plate 60 is provided with a plurality of (for example, four) positioning claws 70, while the electric board 58 is provided with the positioning claws 70.
Are provided with four notches 72 which can be fitted respectively.
The positioning of the electric board 58 with respect to the metal plate 60 in the XY directions is determined by fitting the positioning claws 70 and the notches 72.

In this case, the metal plate 60 is provided with an electric board 58 in order to enhance heat dissipation and to make the device compact.
The metal plate 60 has an electric board 5
Since the plurality of protrusions 74 are formed by a part that does not short-circuit with 8, the metal plate 60 does not short-circuit with the electric board 58. The shield plate 8 is provided between the disk drive unit 32 (see FIG. 1C) and the electric board 58 so that a noise signal generated from the disk drive unit 32 does not affect the electric board 58.
0 (see FIG. 4A) is inserted.

When the above assembly process is completed,
As shown in FIGS. 1 and 2, mounting holes 44a, 44b formed on the board mounting surfaces 42a, 42b of the frame 34.
And mounting holes 76a, 76b formed in the electric board 58.
And the mounting holes 78a and 78b formed in the metal plate 60 are coaxially overlapped with each other.

FIGS. 4A and 4B show an assembling process of assembling the disk drive of the present embodiment assembled through the above-described assembling process to the outer case. The outer case includes an upper case 82 and a lower case 84.

First, when assembling the disk drive to the upper case 82, as shown in FIG.
2, a pilot hole (not shown) is formed at a position coaxially overlapped with each of the mounting holes 44b, 76b, 78b, and the pilot hole is formed through the mounting holes 44b, 76b, 78b. The mounting screw 86 is screwed. Note that only one mounting screw 86 is shown in FIG.

Further, since the upper case 82 is provided with the rib 88 for suppressing the swing of the free end of the frame 34, the disk drive device can be stabilized by screwing the mounting screw 86. Can be assembled.

Next, a case where the disk drive device assembled to the upper case 82 is assembled to the lower case 84 will be described with reference to FIG. In the lower case 84, screw fixing holes (not shown) are respectively formed at positions coaxially overlapping with the mounting holes 44a, 76a and 78a, and the upper case 82 shown in FIG. A pair of engaging portions (not shown) that can be engaged with a pair of engaging claws 90 formed at both upper ends toward the middle are formed. Note that the pair of engaging portions formed on the lower case 84 are not shown in FIG. 4B because they are arranged on the back side in the drawing.

After the pair of engaging portions of the lower case 84 is engaged with the pair of engaging claws 90 of the upper case, the lower case 8
4 to the mounting holes 44a, 76a, 7
A mounting screw 92 is screwed into a prepared hole (not shown) formed in the upper case 82 via the inner surface 8a. In this case, the outside of each mounting screw 92 is covered with a rubber foot 94 so that each mounting screw 92 is not exposed. FIG. 4B shows only one mounting screw.

By such an assembling process, the above-mentioned disk drive device is composed of the upper case 82 and the lower case 84.
It is firmly assembled between. In this case, the frame 34 of the disk drive, the electric board 58, and the metal plate 60 are held in contact with each other via the four mounting screws 86, 92, so that the ground can be strengthened.

As described above, according to the disk drive of the present embodiment, the number of parts required for assembly can be reduced as compared with the prior art, so that the manufacturing cost of the apparatus can be reduced. Furthermore, since the process of assembling the device can be simplified, the number of steps for assembling the device can be reduced and the device can be assembled in a short time. As a result, according to the present embodiment, it is possible to provide a low-cost and compact disk drive that can be easily assembled in a short time.

The present invention is not limited to the above-described embodiment, and can be variously modified without adding new matter. For example, as shown in FIG. 5A, it is also preferable to provide convex portions 96 on both sides near the tip of the projecting portion 54 of the frame 34. In this case, when the projecting portion 54 is press-fitted into the second and third fitting holes 62b and 62c and fitted, as shown in FIG. The fitting pieces 68 of the holes 62b and 62c are hooked. For this reason, it is possible to make it difficult for the frame 34 to come off from the metal plate 60.

For example, as shown in FIG. 5C, it is preferable to provide recesses 98 on both sides near the tip of the projecting portion 54 of the frame 34. In this case, when the protrusion 54 is press-fitted into the second and third fitting holes 62b and 62c and fitted,
As shown in FIG. 5D, the fitting pieces 68 of the second and third fitting holes 62b and 62c are hooked on the recess 98. For this reason, it is possible to make it difficult for the frame 34 to come off from the metal plate 60.

For example, as shown in FIGS. 5 (e) and 5 (f), a notch 10
0 and the second and third fitting holes 62b, 6
It is also preferable to form a notch 102 in the center of the fitting piece 68 of FIG. In this case, the second and third fitting holes 62b,
When the protrusion 54 is pulled out of the protrusion 62c, as shown in FIG.
After inserting into the notch 102 of the fitting piece 68 from above, the fitting hole between the fitting pieces 68 can be expanded by tilting the operation rod 104, so that the protrusion 54 is connected to the second and third protrusions. It can be easily and quickly removed from the fitting holes 62b, 62c.

[0047]

According to the present invention, it is possible to provide a low-cost and compact disk drive which can be assembled in a short time and easily.

[Brief description of the drawings]

FIG. 1A is a diagram showing a configuration of a frame of a disk drive device according to one embodiment of the present invention, and FIG. 1B is a diagram in which an arm fitting portion and a unit fitting portion are fitted into openings of a buffer member. FIG. 3C is a perspective view illustrating a combined state, and FIG. 4C is a plan view illustrating a state where the disk drive unit is temporarily fixed to a frame.

2A is a diagram illustrating a state where an electric board is mounted on a frame, and FIG. 2B is a diagram illustrating a state where a metal plate is mounted on the electric board.

FIG. 3A is a plan view showing a configuration of a thin metal piece for reinforcing a ground, and FIG. 3B is a perspective view showing a fitting state between a projecting portion of a frame and a first fitting hole of a metal plate. FIG. 9C is a perspective view showing a fitting state of the projecting portion of the frame and second and third fitting holes of the metal plate.

FIG. 4A is a plan view showing a state where the disk drive device is assembled to an upper case, and FIG. 4B is a plan view showing a configuration of a lower case.

5A is a view showing a configuration of a projecting portion of a frame provided with convex portions on both sides near a front end portion, and FIG. 5B is a diagram showing a configuration in which the projecting portions in FIG. FIG. 3C is a partial cross-sectional view illustrating a state where the frame is fitted in the fitting hole of FIG.
(D) is a partial cross-sectional view showing a state in which the protruding part of FIG. (C) is fitted into the second and third fitting holes, and (e) is a cutout formed at the center of the tip. FIG. 3F is a plan view showing the configuration of the projecting portion of the frame, and FIG. 4F is a plan view showing the shapes of second and third fitting holes in which a cutout is formed in the center of the fitting piece;
FIG. 4 is a partial cross-sectional view showing a state in which a protruding portion is removed from second and third fitting holes.

FIGS. 6A and 6B are exploded perspective views of a conventional disk drive device, in which FIG. 6A is an exploded perspective view of a disk drive unit and a frame, and FIG. FIG.

7A is a plan view of a disk drive unit of a conventional disk drive device, FIG. 7B is a diagram showing a configuration of a frame of the conventional disk drive device, and FIG. The perspective view which shows the state which each fitting part has fitted.

FIG. 8A is a plan view showing a state in which a disk drive unit is temporarily fixed to a frame, and FIG. 8B is a plan view showing a state in which a metal plate for preventing electromagnetic radiation is screwed to the frame.

[Explanation of symbols]

 32 Disk drive unit 34 Frame 54 Projection 60 Metal plate 62a, 62b, 62c Fitting hole

Claims (3)

[Claims] 1. A holding means for detachably holding a disk drive unit for driving a disk on a frame, and the disk drive unit detachably held on the frame by the holding means so as not to fall off the frame. Fixing means for fixing the disk drive unit to the frame. 2. The holding means includes at least a plurality of first fitting portions provided on the disk drive unit, a plurality of second fitting portions provided on the frame, and a buffer member. By fitting the first and second fitting portions into fitting holes formed in the buffer member, the disk drive unit can be held by the frame. The disk drive according to claim 1, wherein: 3. The fixing means includes: a plurality of projections provided on the frame; and a metal plate having a plurality of fitting holes into which the projections can be fitted. The disk drive device according to claim 1, wherein the disk drive unit can be positioned and fixed to the frame by being fitted into a plurality of fitting holes of the metal plate.