JPH0757449A - External storage device - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the transmission of disturbance to the recording / reproducing device and improve the vibration resistance and shock resistance. [Structure] A recording / reproducing device equipped with a main mechanism necessary for recording / reproducing, such as a drive device for rotationally driving an information recording medium.
A vibration damping member 15 is provided between the base housing 10 on which the drive power supply 13 and the like 12 are mounted and the exterior member 11 covering the base housing 10 to prevent disturbance vibration from being transmitted to the base housing 10. To do.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external storage device having a built-in information pickup means such as a magneto-optical disk drive device, an optical disk drive device, a hard disk drive device and its peripheral devices.

[0002]

2. Description of the Related Art FIG. 13 is a perspective view showing an example of a conventional external storage device. Reference numeral 1 is a base casing for accommodating various members constituting the device, and 2 and 3 are fixed to the base casing 1. A front panel, a rear panel, and 4 indicate a C-type exterior casing as viewed from the front, which covers the upper opening of the base casing 1.

A chassis (to be described later) and a driving power source (not shown) in which main members necessary for a recording / reproducing apparatus such as a disk drive device (not shown) are mounted on the inside and outside of the base casing 1 and the rear panel 3. Various components such as () are assembled,
Further, the exterior housing 4 is attached to the rear panel 3 on the base housing 1.
From the front panel 2 until it comes into contact with the flange portion 2a of the front panel 2.

Screw holes 4a are formed at four corners of the side surface having the opening of the outer case 4, and the base case corresponding to the positions of the screw holes 4a, 4a, 4a, 4a after the assembly is completed. At the position on the side surface of No. 1, tap holes 1a, 1a, 1a, 1a
Is provided. Then, the screws 5 are inserted into the four screw holes 4a, and the screws 5 are screwed into the tap holes 1a, whereby the exterior housing 4 is fixed to the base housing 1.

FIG. 14 is a configuration diagram of a main part including a partial cross section showing a state in which a chassis 6 is mounted in a conventional base housing 1. Reference numeral 6 denotes information for an information recording medium (not shown). A chassis in which main members necessary for recording and reproducing are also assembled, 7 is a U-shaped drive frame, 8 is a vibration isolating member, and 9 is a flat head screw.

Further, in the base casing 1, 1b is a bent portion on the right side of the base casing 1 in FIG. 13, 1c is a substantially central portion of the base casing 1 in the same direction as and parallel to the bent portion 1b. The support part standing upright is shown.

One of the vibration-proof members 8 is fixed to each of the four corners of the chassis 6, a drive frame 7 is attached around the chassis 6, and the drive frame 7 and the vibration-proof member are integrated with countersunk screws 9. And drive frame 7
Is placed between the bent portion 1b and the support portion 1c and screwed to fix the chassis 6 to the base casing 1.

[0008]

In recent years, the development of magneto-optical discs has progressed, and the track density recorded on the medium is on the road to higher densities in order to increase the capacity. In order to cope with this, it is required to further improve the data track followability of the magnetic head, and it is also required to further suppress the disturbance vibration transmitted to the recording / reproducing section in the apparatus.

In the above-mentioned conventional technique, as shown in FIGS. 13 and 14, the vibration absorbing member installed on the chassis relies on absorption of disturbance. For this reason, in recent years, with the trend toward miniaturization, it is difficult to provide a recording / reproducing apparatus with sufficient anti-vibration property due to the space limitation due to the layout, and the vibration resistance and impact resistance performance have not been improved.

Further, the external storage device itself is becoming lighter, thinner, shorter, and smaller, and the vertical and thin type is particularly advantageous in terms of space efficiency, so that the needs of users are increasing. However, making the device thinner makes the device body more likely to tip over. Therefore, the frequency with which a functional failure occurs in the recording / reproducing apparatus also increases due to the user accidentally tipping over.

To solve this problem, a fall prevention member is generally provided on the bottom surface of the external storage device. However, it is a fact that making the fall prevention member protrude from the width direction of the external storage device for the sake of safety does not contribute to improvement of space efficiency even if the external storage device main body is made thin.

Furthermore, the disturbance shock is directly transmitted to the base casing, and the power switch of the external storage device is turned on and off.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide an external storage device in which disturbance transmission to a drive device is reduced and vibration resistance and shock resistance are remarkably improved.

[0014]

In order to achieve the above object, the present invention provides a base housing having a recording / reproducing device for recording, reproducing, and erasing information on an information recording medium, and a base casing. An external storage device comprising an exterior housing covering a base housing, wherein an anti-vibration member is arranged between the exterior housing and the base housing.

Further, the anti-vibration member is arranged on both side surfaces of the upper portion of the exterior casing in the height direction.

The anti-vibration member also functions as a fall prevention member of the apparatus body.

Further, the anti-vibration member has a substantially plate shape, the central portion of which is attached to the base casing, and both ends thereof are attached to the exterior casing.

Further, according to the present invention, a recording / reproducing apparatus for recording / reproducing / erasing information on / from an information recording medium, a base casing for accommodating the recording / reproducing apparatus, and an outer casing for covering the base casing. In the external storage device including the above, the chassis on which the main members of the recording / reproducing device are mounted is installed in the base casing only via the vibration isolating member, and the base casing is further isolated from the exterior casing. It is characterized by being installed through a member.

Further, it is characterized in that the position of the center of gravity of the chassis is displaced from the center line of the fixed surface where the chassis is installed in the base casing.

[0020]

According to the above construction, the vibration isolating member is provided between the outer casing and the base casing, so that even if a disturbance is applied to the outer casing, the impact transmission on the base casing is significantly reduced. It Therefore, the influence on each unit arranged on the base housing can be reduced.

Further, since the anti-vibration members are arranged on both side surfaces of the upper part of the device, the impact in the case of being accidentally tumbled can be absorbed, and the influence on the inside can be reduced.

Further, since the anti-vibration member arranged between the exterior casing and the base casing also serves as the fall prevention member, the number of parts relating to the fall prevention member can be reduced and the mounting work is simplified. Can be converted.

Further, since the vibration-proof member has a substantially plate-like shape, and its central portion is attached to the base casing and both ends are attached to the exterior casing, a large stroke in the tracking direction can be taken. , It becomes easy to absorb the disturbance vibration in the tracking direction, which is the most affected, and the shock,
The disturbance resistance performance in the tracking direction can be improved. further,
The number of parts of the vibration isolator can be reduced from four to two.

Further, since the chassis on which the main mechanism of the recording / reproducing apparatus is mounted is directly attached to the base casing via the vibration isolating member, the drive frame used conventionally can be deleted and the drive frame can be deleted. The thickness of the vibration damping member can be increased.

Further, since the position of the center of gravity of the chassis does not coincide with the center line of the fixed surface of the base casing holding the chassis between them, when a disturbance is applied in the tracking direction, a rotation moment is generated in the chassis. However, the disturbance can be dispersed in the tangential direction which is relatively strong against the disturbance.

[0026]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a front view including a partial cross section showing the configuration of the first embodiment of the present invention, and FIG. 2 is a perspective view of the bottom side of FIG. The same members as those in the conventional technique shown in FIGS. 13 and 14 are designated by the same reference numerals and detailed description thereof is omitted. In FIGS. 1 and 2, 10 is a base housing, 11 is a C-type exterior housing with an opening on the bottom surface, and 12 is a drive device (not shown) for rotationally driving an information recording medium (not shown). A recording / reproducing apparatus including a main unit body for recording / reproducing, such as (3), 13 is a driving power source, and the recording / reproducing apparatus 12 and the driving power source 13 are housed in the base casing 10.

Reference numeral 14 denotes rubber feet installed at the four corners of the bottom surface of the outer housing 11 to prevent the apparatus body from tipping over, 15 is a vibration isolating member, and 16 is an external housing mounting screw, as shown in FIG. like,
The anti-vibration member 15 is arranged between the bottom surface of the base housing 10 and the bottom surface of the exterior housing 11.

FIG. 3 is an enlarged cross-sectional view of the portion A of FIG. 1 showing the mounting state of the vibration isolator 15, wherein 10a is a circular boss projecting from the bottom surface of the base casing 10 to the inside of the base casing 10, and 10b. Is a tap hole formed in the center of the circular boss 10a, 11a is a screw hole formed in the bottom surface of the outer casing 11, 15a is a damping member, 15b is an insert screw, and 15c is an insert nut.

The vibration isolator 15 is constructed by embedding an insert screw 15b and an insert nut 15c in the damping member 15a. Then, by screwing the insert screw 15b of the vibration isolator 15 and the tap hole 10b,
One end of the vibration isolator 15 is fixed to the base casing 10. Further, by covering the base casing 10 with the outer casing 11 and inserting the outer casing mounting screw 16 into the screw hole 11a and screwing it into the insert nut 15c, the other end of the vibration isolating member 15 is attached to the outer casing 11. The exterior housing 11 is fixed and attached to the base housing 10.

FIG. 4 is a plan view showing the internal structure of the first embodiment, in which 10c is a bent portion on both sides of the base casing 10, and 10d.
Is a support portion standing upright from the bottom surface of the base casing 10, and the recording / reproducing device 12 is arranged and fixed between the upper bent portion 10c and the support portion 10d in FIG.

Reference numeral 17 denotes an L-shaped holder, and this holder 17
Has a flat portion 17a formed by bending a short side of the L-shape, and the flat portion 17a is placed on the base casing 10 so that the flat portion 17a faces the rear portion of the recording / reproducing device 12. 17 are arranged. Further, the holder 17 is fixed slightly above the bottom surface of the base casing 10.

Reference numeral 18 is a power switch, 19 is a cooling fan, 20 is a duct, 21 is a sponge, 22 is an operating body, and 23 is a connecting member. The drive power supply 13 is installed on one surface of the holder 17 located on the side of the recording / reproducing device 12.
On the other side of the holder 17 located behind the
18 and cooling fan 19 are installed. The operation portion 18a of the power switch 18 projects from the flat surface portion 17a, and a hole portion (not shown) is formed in a part of the flat surface portion 17a facing the cooling fan 19.

One end of a duct 20 is attached to the rear part of the cooling fan 19, and the other end is attached to the rear panel 3 via a sponge 21. A hole (not shown) is formed on the surface of the rear panel 3 in the portion where the duct 20 is installed.

The operating body 22 is provided so as to be pressed by the front panel 2. In addition, in the space between the holder 17 formed below the drive power source 13 and the bottom surface of the base casing 1, a connecting member is provided.
23 is installed, the operating body 22 is connected to one end of the connecting member 23, and the operating portion 18a is connected to the other end. Therefore, the power switch 18 can be turned on / off by pressing the operating body 22.

FIG. 5 is a perspective view including a partial cross section showing the external appearance of the second embodiment of the present invention, in which 30 is a base casing and 30a.
Is an extending piece that extends inside the opening from the center of the two sides in the opening of the base housing 30 in the longitudinal direction, 30b is a tap hole, 31 has an opening on the side surface, and is viewed from the front. C-shaped outer casing, 31a is a semi-circular cutout provided at four positions on the edge of the opening of the outer casing 31, 32 is a cylindrical type vibration damping member having a groove 32a around the central portion, and 33 is Anti-vibration member mounting screw, 34 is a plate-shaped anti-vibration member. The same members as those in the first embodiment shown in FIGS. 1 to 4 are designated by the same reference numerals and detailed description thereof is omitted.

FIG. 6 is a front view including a partial sectional view of FIG. As shown in FIG. 5, the anti-vibration member 34 is adhesively fixed to the extending piece 30a, and is attached to the back surface of the exterior housing 31. The vibration-proof member 32 has the groove 32a fitted in the notch 31a,
The anti-vibration member mounting screw 33 is passed through the inside and screwed into the tap hole 30b of the base casing 30 to be fixed to the base casing 30. At the same time, the base casing 30 and the exterior casing 31 are fixed.

FIG. 7 is a sectional view showing a mounting state of the vibration isolator 32, and 35 is an insert washer. As shown in FIG. 7, the vibration isolator 32 is constructed by embedding an insert washer 35 at one end of a cylindrical damping member 32b having a groove 32a formed on the outer circumference. This insert washer
The vibration damping member 32 is fixed to the base housing 30 by engaging the head portion of the vibration damping member mounting screw 33 with the vibration damping member 32.

FIG. 8 is a side view showing a modification of the second embodiment shown in FIG. 5, in which 36 is a base casing and 36a is a base casing 36.
The tapped holes (FIG. 9) formed in FIG.

The tap hole 36a in the base casing 36 is on the center line in the longitudinal direction of the base casing 36, and the notch 31
It is formed at the center of the line connecting a and 31a. Therefore, the tap hole 36a is formed on the bottom surface of the base casing 36 on the front panel 2a.
Side and the rear panel 3 side.

FIG. 9 is a sectional view taken along the line XX of FIG. 8, showing the structure and mounting state of the vibration isolator 27. As shown in FIG. 9, the vibration damping member 37 according to the modification is similar to the vibration damping member 32 according to the second embodiment shown in FIG. 5, except that the vibration damping members 32, 32 facing each other are connected by a plate-shaped damping member. The insert washer 35 is embedded in the central part.

Then, the grooves 37a, 37a of the vibration isolating member 37 are fitted into the notches 31a, 31a of the outer casing 31, and the vibration isolating member mounting screw 33 is passed through the insert washer 35 at the central portion, and the tap hole 36a is formed. The anti-vibration member 37 is fixed to the base housing 36 by being screwed into the
Is installed.

FIG. 10 is an explanatory view showing a mounted state of the recording / reproducing apparatus according to the third embodiment of the present invention, and FIG. 11 is an explanatory view showing a main part of an external storage device equipped with the apparatus shown in FIG. 38 is a chassis on which various main members constituting the recording / reproducing apparatus are mounted, 39 is a vibration isolating member arranged between the chassis 38 and the base casing 30, and 40 is the vibration isolating member 39 on the base casing 30. The anti-vibration member mounting screw for fixing is shown. As shown in FIG. 10, the chassis 38 is arranged in the base casing 30, and is fixed at four corners via the anti-vibration member 39. The same members as those in the second embodiment shown in FIG. 5 are designated by the same reference numerals and detailed description thereof is omitted.

After various members such as the chassis 38 and the driving power source are mounted at predetermined positions in the base housing 30, the base housing 30 is attached to the outer housing 31 and the base housing 30 is mounted via the vibration isolating member 39. The body 30 and the outer casing 31 are fixed by the vibration-proof member mounting screws 40.

When the chassis 38 is mounted in the base casing 30, the center of gravity position G of the chassis 38 in which the drive device (not shown) and the like are installed is the same as that of the chassis 38 in the base casing 30 shown in FIG. Center line X of the fixed portion, that is, the bent portion 30
It is located at a position displaced from the bisector of c and the supporting portion 30d.

Positioning the center of gravity G at a position displaced from the center line X is designed so that the center of gravity position G is displaced from the center line X depending on the layout of various main members mounted on the chassis 38. It can be realized by adding a weight.

Next, the function and effect will be described.

According to the configuration of the first embodiment, the base casing 10
By providing the anti-vibration member 15 between the outer casing 11 and
Since the external shock is absorbed by the vibration isolating member 15, the shock is prevented from being transmitted to the base casing 10. Therefore, the influence on each member on the base housing 10 is significantly reduced, such as the malfunction of the power switch 18 on the base housing 10. Further, since the sponge 21 is provided between the rear panel 3 and the duct 20, the disturbance impact is sponged.
Shocks and vibrations absorbed by the duct 21 and the duct 20 and the cooling fan 19
It is prevented from being transmitted to the base casing 10 through the.

According to the configuration of the second embodiment, the base housing 30
Since the anti-vibration member 32 provided between the outer casing 31 and the outer casing 31 also serves as a rubber foot that serves as a fall-prevention member when the apparatus body is placed on a horizontal surface such as a desk, the number of parts related to the rubber foot is reduced. Therefore, the cost can be reduced and the mounting work can be facilitated.

Further, since the anti-vibration member 34 is disposed on both side surfaces in the upper portion of the exterior casing in the height direction, when the anti-vibration member 34 is accidentally overturned, the anti-vibration member 34 absorbs the impact due to the overturn. Therefore, damage to the recording / reproducing device can be reduced. Note that this configuration is particularly effective for a thin type vertical storage type external storage device that is relatively prone to fall over as shown in FIG.

Further, according to the modified example shown in FIG. 8, the number of parts of the vibration-proof member can be reduced from four to two, and accordingly, the number of mounting screws 33 can be reduced from four to two. Therefore, the cost can be reduced. Further, as shown in FIG. 12, since a large stroke in the tracking direction can be taken, it is possible to improve the disturbance resistance performance against the disturbance vibration and impact in the tracking direction, which are most likely to affect the device.

Further, according to the configuration of the third embodiment, since the chassis 38 is directly attached to the base casing 30 via the vibration isolating member 39, the drive frame 7 according to the conventional example shown in FIG. 14 is eliminated. In addition, since the vibration damping member 39 can be made larger by the thickness of the drive frame 7, the disturbance resistance performance can be improved.

The position of the center of gravity of the chassis 38 and the chassis
Since the center line of the fixed surface of the base housing 30 that holds 38 in between is not aligned, even if a vibration impact is applied in the tracking direction, a rotational moment is applied to the chassis 38 as indicated by an arrow M in FIG. It is possible to disperse the disturbance in a tangential direction that is relatively strong against the disturbance, that is, a direction orthogonal to the seek direction (tracking direction) of the recording / reproducing head (not shown) and parallel to the information recording medium surface. Therefore, the disturbance resistance performance in the tracking direction can be improved.

[0054]

According to the present invention constructed as described above, the following effects can be obtained.

According to the structure of claim 1, the impact transmission to the base casing is remarkably reduced, so that it is possible to surely reduce the influence of the disturbance on the inside of the apparatus main body.

According to the second aspect of the present invention, it becomes possible to protect the inside of the apparatus main body from the impact when the apparatus main body is accidentally tumbled.

According to the third aspect of the present invention, the parts related to the rubber feet can be reduced, and the work for attaching the rubber feet is eliminated, so that the cost can be reduced.

According to the structure of claim 4, since the stroke in the tracking direction of the vibration-proof member can be made large, the disturbance resistance performance in the tracking direction can be improved. Further, the number of parts of the vibration isolator and its mounting screw can be reduced, so that the cost can be reduced.

According to the structure of claim 5, the conventional drive frame can be deleted, and the vibration-proof member can be increased by the thickness of the drive frame, so that the disturbance resistance performance can be improved.

According to the structure of claim 6, the disturbance in the tracking direction can be dispersed in the tangential direction relatively resistant to the disturbance, so that the disturbance resistance performance in the tracking direction can be improved.

[Brief description of drawings]

FIG. 1 is a front view including a partial cross-section showing a configuration of a first embodiment of the present invention.

FIG. 2 is a perspective view of a bottom surface side including a partial cross section of FIG.

FIG. 3 is a cross-sectional view showing a mounted state of the vibration isolator of FIG.

FIG. 4 is a plan view showing the internal configuration of FIG.

FIG. 5 is a bottom side perspective view including a partial cross-section showing the configuration of a second embodiment of the present invention.

FIG. 6 is a front view including a partial cross section of FIG.

FIG. 7 is a cross-sectional view showing a mounting state of the vibration isolator of FIG.

FIG. 8 is an explanatory diagram showing a modified example of the second embodiment.

9 is a sectional view taken along line XX of FIG.

FIG. 10 is a plan view showing a mounted state of the chassis according to the third embodiment of the present invention.

11 is an internal configuration diagram showing a schematic configuration of a main part of an apparatus main body including the configuration of FIG.

12 is an explanatory diagram showing a state when a disturbance is applied to the apparatus main body including the configuration shown in FIG.

FIG. 13 is a perspective view showing an example of a conventional external storage device.

FIG. 14 is an explanatory diagram including a partial cross section showing a mounted state of a chassis inside a conventional external storage device.

[Explanation of symbols]

1, 10, 30, 36 ... Base housing, 2 ... Front panel, 3
... Back panel, 4,11,31 ... External housing, 6,38 ... Chassis, 8,15,32,37,39 ... Vibration isolator, 12 ... Recording / reproducing device, 13 ... Driving power supply, 14 ... Rubber foot, 17 ... Holder, 18 ... Power switch, 19 ... Cooling fan, 20 ... Duct, 21 ... Sponge, 22 ... Manipulator, 23 ... Coupling member.

Claims (6)

[Claims] 1. An external storage device comprising: a base casing having a recording / reproducing device for recording / reproducing / erasing information on / from an information recording medium, and an exterior casing for covering the base casing. An external storage device, characterized in that a vibration damping member is arranged between the exterior housing and the base housing. 2. The external storage device according to claim 1, wherein the anti-vibration members are arranged on both side surfaces of the upper portion of the outer casing in the height direction. 3. The external storage device according to claim 1, wherein the anti-vibration member also serves as a fall prevention member of the main body of the apparatus. 4. The external memory according to claim 3, wherein the vibration isolating member has a substantially plate shape, the central portion of which is attached to the base casing and both ends of which are attached to the exterior casing. apparatus. 5. A recording / reproducing device for recording, reproducing, and erasing information on an information recording medium, a base casing for accommodating the recording / reproducing device, and an exterior casing for covering the base casing. In an external storage device, a chassis on which the main members of the recording / reproducing device are mounted is installed in a base casing only via a vibration isolating member, and the base casing is installed in an exterior casing via a vibration isolating member. An external storage device characterized by being installed. 6. The external storage device according to claim 5, wherein the position of the center of gravity of the chassis and the center line of the fixed surface, which is the installation position of the chassis in the base housing, are offset from each other.