JP3488609B2 - Hard disk drive holding 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 hard disk drive holding device of an information device equipped with a hard disk drive for recording and reproducing information.

[0002]

2. Description of the Related Art A conventional hard disk drive holding device generally has a structure shown in FIG. 5, for example. The configuration will be described below. As shown in FIG. 5, a hard disk drive 2 for recording and reproducing information
Reference numerals 1 and 22 denote flat portions 23 of the holding member 23 that holds the flat members 23.
It is attached and held to a by four screws 24a, 24b, 24c and 24d and 25a, 25b, 25c and 25d respectively, and this holding member 23 prevents transmission of vibration from the chassis 26 and attenuates vibration. For,
The screw 28 is inserted through the damper 27 inserted in the holding member 23.
And, by the fixing member 29, it is supported at four places in this example.

[0003]

In the above-described conventional hard disk drive holding device, when information is recorded and reproduced on the hard disk drive when external vibration is applied,
There may be a problem that an error occurs and the number of retries increases, or in an extreme case, the hard disk surface is scratched.

In some cases, the hard disk drive itself has a structure that is vulnerable to vibration, but the cause may also be due to the hard disk drive holding device. The vibration from the outside is transmitted to the chassis 26, is damped by the damper 27, and is transmitted to the holding member 23 via the damper 27. At this time, the vibration from the outside is affected by the natural frequency of the holding member 23. Had the problem of amplifying.

The present invention solves the above-mentioned problems of the prior art, and it is possible to damp external vibration applied to the holding member and prevent the influence of the natural frequency of the holding member of the hard disk drive. It is a technical subject to provide a hard disk drive holding device that can prevent the amplification of external vibration.

[0006]

According to another aspect of the present invention, there is provided a hard disk drive holding device, wherein a holding member having a flat surface portion for mounting a hard disk drive for recording and reproducing information on one side thereof and a plate member having an area substantially equal to that of the flat surface portion. Damping plate, an adhesive member for bonding the other one side of the flat portion and the plate-shaped damping plate,
The housing that contains the hard disk drive holding device, and
The plate-shaped vibration damping plate is provided substantially at the center of the plate-shaped vibration damping plate.
Abuts on one surface of the housing close to and supports the one surface
And a support member that

According to the hard disk drive holding device of the first aspect, the external vibration applied to the holding member is
It can be damped by the viscoelastic effect of the laminated structure of the holding member, the adhesive member, and the plate-shaped damping plate, the influence of the natural frequency of the holding member can be prevented, and the amplification of external vibration can also be prevented. You can Furthermore, the holding member
The natural frequency of resonance of the flat part supports the housing with the support member.
Vibration is dampened because it will be higher than the node
You can According to a second aspect of the present invention, in the hard disk drive holding device according to the first aspect, the plate damping plate is composed of a plurality of plate damping plates.

According to the hard disk drive holding device of the second aspect, in addition to the same effect as the first aspect, the resonance of the natural frequency of the flat surface of the holding member is different from that of the plurality of plates. It can be damped by the viscoelastic effect of the laminated structure of the vibration damping plate and the adhesive member .

[0009]

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. 1 is a perspective view of a hard disk drive holding device according to an embodiment of the present invention, and FIG. 2 is a sectional view of the hard disk drive holding device. 1 and 2, the hard disk drives 1 and 2 for recording and reproducing information are
Four screws 4a, 4b, 4c and 4d and 5a, 5b, 5c are respectively provided on the flat surface portion 3a of the holding member 3 for holding this.
The holding member 3 is attached and held by the damper 7 and the damper 7 inserted in the hole 3b of the holding member 3 in order to prevent transmission of the vibration from the chassis 6 and damp the vibration.
Via the screw 8 and the fixing member 9 through the
It is supported in several places.

The area of the flat surface portion 3a of the holding member 3 is about 1
The two plate-shaped damping plates 10a and 10b of / 2 are bonded to the flat surface portion 3a of the holding member 3 by the bonding members 11a and 11b. In this example, the adhesive members 11a and 11b use double-sided tape or rubber adhesive. Further, reference numeral 12 denotes a housing containing a hard disk drive holding device, and the plate-shaped damping plate 1 is arranged so as to come into contact with one surface 12a of the housing 12 close to the two plate-shaped damping plates 10a and 10b.
The support member 13a is provided substantially at the center of 0a, and the support member 13b is provided at the substantially center of the plate damping plate 10b. The support member uses, for example, neonprene rubber.

The operation of the hard disk drive holding device configured as described above will be described below. Vibrations from the outside are transmitted from the housing 12 to the chassis 6, and the vibrations are attenuated by the damper 7 and are transmitted to the holding member 3 via the dampers 7 to the hard disk drives 1 and 2 mounted on the flat surface 3a of the holding member 3. It is transmitted. At this time, affected by the natural frequency of the flat surface portion 3a of the holding member 3,
It tries to amplify the vibration from the outside with this natural frequency.

FIG. 3 is a diagram showing a vibration characteristic of a conventional hard disk drive holding device, in which the horizontal axis represents the frequency of vibration and the vertical axis represents the amplitude of vibration. A is the vibration input to the chassis 26 from the outside, and B is the holding member 2
It is the vibration measured at the central portion of the flat surface portion 23a of No. 3, and it can be seen that there is amplification of the vibration near the frequency of 200 Hz. FIG. 4 is a diagram showing a vibration characteristic of the hard disk drive holding device according to the embodiment of the present invention, in which the horizontal axis represents the frequency of vibration and the vertical axis represents the amplitude of vibration. A is the vibration input to the chassis 6 from the outside, C is the vibration measured at the central portion of the flat surface portion 3a of the holding member 3, the vibration is attenuated near the frequency of 200 Hz, and the vibration is attenuated at a higher frequency. You can see that there is.

According to this embodiment, the vibration can be damped by the viscoelastic effect of the laminated structure of the flat surface portion 3a of the holding member 3, the adhesive members 11a and 11b, and the plate-shaped damping plates 10a and 10b. Further, the resonance of the natural frequency of the flat surface portion 3a of the holding member 3 is caused by the two plate damping plates 10a and 10b having different natural frequencies and the adhesive member 11.
It can be attenuated by the viscoelastic effect of the laminated structure with a and 11b.

Further, two plate-shaped damping plates 10a and 10b are provided.
Since the support members 13a and 13b are provided at approximately the central portions of the respective plate damping plates 10a and 10b so as to come into contact with the one surface 12a of the housing 12 which is close to the resonance of the flat portion 3a of the holding member 3. Since the natural frequency of is higher due to the node formed by supporting the one surface 12a of the housing 12 and the support members 13a and 13b, the vibration can be damped.

The damping member has substantially the same area as that of the flat surface portion 3a, and the shape thereof is also substantially the same as that of the flat surface portion. One piece may be used, or a plurality of pieces divided into three or more pieces may be used.

[0017]

According to the hard disk drive holding device of the first aspect, the external vibration applied to the holding member is attenuated by the viscoelastic effect of the laminated structure of the holding member, the adhesive member and the plate damping plate. Therefore, the influence of the natural frequency of the holding member can be prevented, and the amplification of vibration from the outside can be prevented. Furthermore, the holding unit
The natural frequency of resonance of the flat part of the material is used to support the housing.
Vibration is dampened because it is higher than the node that can be supported by
Can be made.

According to the hard disk drive holding device of the second aspect, in addition to the same effect as the first aspect, the resonance of the natural frequency of the flat surface of the holding member is different from that of the plurality of plates. It can be damped by the viscoelastic effect of the laminated structure of the vibration damping plate and the adhesive member .

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a hard disk drive holding device according to an embodiment of the present invention.

FIG. 2 is a sectional view thereof.

FIG. 3 is a characteristic diagram showing vibration characteristics in a conventional hard disk drive holding device.

FIG. 4 is a characteristic diagram showing vibration characteristics of the hard disk drive holding device according to the embodiment of the present invention.

FIG. 5 is a partially cutaway perspective view of a conventional hard disk drive holding device.

[Explanation of symbols]

1,2,21,22 hard disk drive 3,23 Holding member 3a, 23a Flat part of holding member 6,26 chassis 7,27 damper 10a, 10b Plate damping plate 12 cases 13a, 13b Support member

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Go Yamawaki 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-4-102286 (JP, A) JP-A-4- 171326 (JP, A) JP 8-255471 (JP, A) Actual development 5-54845 (JP, U) Actual development 4-54095 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 33/08 G11B 33/02 301

Claims (2)

(57) [Claims] 1. A holding member having a flat surface portion for mounting a hard disk drive for recording and reproducing information on one side, a plate-shaped damping plate having an area substantially equal to that of the flat surface portion, and another surface of the flat surface portion. An adhesive member for adhering the plate-shaped damping plate,
The housing that contains the hard disk drive holding device, and
The plate-shaped vibration damping plate is provided substantially at the center of the plate-shaped vibration damping plate.
Abuts on one surface of the housing close to and supports the one surface
Hard disk drive holding device having a supporting member . 2. The hard disk drive holding device according to claim 1, wherein the plate-shaped damping plate comprises a plurality of plate-shaped damping plates.