JP4169148B2

JP4169148B2 - Buffer member mounting structure

Info

Publication number: JP4169148B2
Application number: JP2002379283A
Authority: JP
Inventors: 健太郎松島
Original assignee: Polymatech Co Ltd
Current assignee: Polymatech Co Ltd
Priority date: 2002-12-27
Filing date: 2002-12-27
Publication date: 2008-10-22
Anticipated expiration: 2022-12-27
Also published as: JP2004213724A

Description

【０００１】
【発明の属する技術分野】
この発明は、例えばノートブックタイプのパーソナルコンピュータなどの情報処理装置に内蔵するハードディスク装置などの外部記憶装置と、情報処理装置における外部記憶装置の格納部との間を伝達する振動を減衰する技術に関する。
【０００２】
【発明の背景】
例えば図４で示すように、情報処理装置であるノートブックタイプのパーソナルコンピュータ１には、ディスク状記憶媒体を内蔵する外部記憶装置としてハードディスク装置２が格納されている。このハードディスク装置２には、筐体３の上面３ａおよび底面３ｂに薄板矩形状の弾性材でなる緩衝部材４が、例えば図示せぬ粘着テープなどで固定されている。筐体３の側面３ｃにもまた同様の緩衝部材５が粘着テープなどで固定されている。そして、緩衝部材４，５は、図５で示すように、ハードディスク装置２がパーソナルコンピュータ１の格納部１ａに格納されて蓋１ｂで閉塞されると、その隙間に挟み込まれた状態に配置されることになり、両者間を伝達する振動を減衰させる役割を担っている。
【０００３】
ところで、ハードディスク装置２は大容量化が進み、回転速度も高速化傾向にあるため、発生する内乱振動もより大きなものになる。また、ノートブックタイプのパーソナルコンピュータ１のような携行可能で、車両に乗って使用することも可能な情報処理装置にあっては、外乱振動によりハードディスク装置２に伝達され得る振動もより強いものとなる。したがって、現状のままでは振動減衰効果にも限界があることは自明であり、省スペースの点で有利な緩衝部材４，５を利用しつつ更なる減衰効果の向上が求められている。なお、このような改善要請は、ノートブックタイプのパーソナルコンピュータ１とハードディスク装置２の関係に固有のものではなく、車載用カーオーディオ装置とそれに内蔵するハードディスク装置の関係など、いわゆるディスク状記録媒体の再生装置とそれを搭載する各種情報処理装置との関係においても要請されている。
【０００４】
【発明が解決しようとする課題】
そして、こうした改善要請に応える一つの手段として緩衝部材４，５を厚肉化することが考えられる。しかしながら、緩衝部材４，５を単に厚肉にしたのでは、格納部１ａとハードディスク装置２との隙間が非常に狭いため、緩衝部材４，５が強く圧縮されて却って剛体のように挙動して減衰特性が悪化してしまう結果となり、殆ど実際的でない。また、厚肉化した緩衝部材４，５を無理なく収容すべく格納部１ａを拡大することは、機器の小型化の要請と相反することになり、やはり実際的でない。
【０００５】
こうした背景の下、本発明者が鋭意検討した結果得られたのが本発明であって、その目的は、緩衝部材の厚肉化に依存しなくても、外部記憶装置に作用する振動をより効果的に減衰できるようにすることにある。
【０００６】
【課題を解決するための手段】
上記目的を達成すべく本発明は、緩衝部材を、外部記憶装置の筐体側面の面端から面方向に沿って外方に突出させるとともに、該筐体側面かまたはこれと対峙する格納部内側面かの何れかに対する当接面の面内箇所で部分的に固定したことを特徴とする緩衝部材の取付構造を提供する。
【０００７】
本発明の取付構造では、緩衝部材を、外部記憶装置の筐体側面の面端から面方向に沿って外方に突出させる。このため、従来例のように筐体３の上面３ａや底面３ｂに取付ける緩衝部材４が無くても、筐体側面の面端から外方に突出する緩衝部材の突出部分によって、格納部内で弾性的に外部記憶装置を収納できる。
【０００８】
また、本発明の取付構造では、緩衝部材を、該筐体側面かまたはこれと対峙する格納部内側面かの何れかに対する当接面の面内箇所で部分的に固定する。すなわち、従来例のように筐体側面を固定面とし、この固定面の全面に対して拘束させるように固定するのではない。このため、部分的な固定箇所を除き、それ以外の部分については固定による阻害を受けない弾性変形が可能となり、緩衝部材の有効変形部分を大きく確保できる。よって、前述した緩衝部材の突出部分の突出厚が小さくても、優れた振動減衰効果を発揮できるものである。
【０００９】
なお、このような緩衝部材の取付箇所は、外部記憶装置の筐体側面であっても、該筐体側面と対峙する情報処理装置の格納部の内側面であっても、何れでもよい。また、ここでいう外部記憶装置の筐体側面は、筐体を構成する側面に面積の大小差がある場合には、面積の大きな大面部または面積の小さな小面部の何れとしてもよい。格納部の内側面についても同様である。
【００１０】
上記緩衝部材の取付構造は、当接面における面内中央箇所で緩衝部材を固定するものとして構成できる。
【００１１】
これによれば、緩衝部材の当接面における面内中央箇所で緩衝部材を、外部記憶装置の筐体側面か格納部の内側面に対して固定する。したがって、緩衝部材の全方向でバランス良く前述の有効変形部分を確保することができる。
【００１２】
以上のようにして緩衝部材を取付けるには、具体的にはネジや係合ピンなどを、外部記憶装置の筐体側面か格納部の内側面に設けた係合部に対し係合させることによって、固定するのが取付作業を容易化できるため好ましい。この場合のネジや係合ピン等との係合部は、緩衝部材の固定用に特別に設けたものとして構成できるが、外部記憶装置の筐体側面や格納部の内側面に設けてある既設のネジ孔や孔等も利用できる。
【００１３】
そこで、本発明の緩衝部材の取付構造は、外部記憶装置がハードディスク装置であり、筐体がそのシャーシであって、シャーシに設けた既設のネジ孔と螺合するネジにより緩衝部材を固定するようにし、緩衝部材の取付作業を容易にしたものである。
【００１４】
【発明の実施の形態】
以下、本発明の一実施形態について図面を参照しつつ説明する。なお、従来技術と同一のものについては、同じ符号を付して重複説明を省略する。
【００１５】
本形態では、図１で示すように、「外部記憶装置」としてのハードディスク装置２の各々の側面３ｃの隅に、２つの緩衝部材４を、その長手方向がハードディスク装置２の高さ方向（図中上下方向）と合致するように沿わせて取付ける。具体的には、図２で示すように、ネジＮを緩衝部材４を貫通する挿通孔４ａに挿通し、筐体３の側面３ｃに形成されている既設のネジ孔３ｄに螺合させ、その締結力をもって緩衝部材４を固定する。
【００１６】
すると、筐体３の上面３ａと底面３ｂから緩衝部材４が突出する。このうち上側突出部４ｂは格納部１ａに接触し、下側突出部４ｃが蓋１ｂに接触する。したがって、これらの上側突出部４ｂと下側突出部４ｃの当接により、従来例のように筐体３の上面３ａや底面３ｂに取付ける緩衝部材４が無くても、格納部１ａ内で弾性的にハードディスク装置２を収納できる。また、従来例の緩衝部材５は、緩衝部材４で代替できるので、その使用も廃止できる。
【００１７】
そして、筐体３の側面３ｃに固定される緩衝部材４は、従来例のようにその全面に対して拘束するように固定する訳ではない。つまり、側面３ｃと接触する当接面４ｄの面内でネジＮの締結力で部分的に拘束して固定している。このためネジＮの固定締結力により拘束している固定箇所の周辺における非固定部４ｅは、「有効変形部分」としてネジＮの固定締結力を受けない弾性変形が可能である。よって、前述の上側突出部４ａと下側突出部４ｂのみならずその非固定部４ｅを含めた弾性変形により、上側突出部４ｂと下側突出部４ｃの突出厚を大きくしなくても、優れた減衰効果を発揮できるようになっている。そして、さらに本形態では、ネジＮによる固定箇所を、緩衝部材４の当接面４ｄにおける面内中央箇所としており（図１，図２）、偏った箇所に固定していない。したがって、緩衝部材４の全方向でバランス良く有効変形部分が確保されており、偏り無く減衰特性を発揮できる。
【００１８】
そして、緩衝部材４は、ネジＮをネジ孔３ｄに螺合して固定される。ネジ孔３ｄは、本形態のハードディスク装置２では既設のものである。したがって、緩衝部材４の取付けに特別な係合構造をハードディスク装置２に用意する必要がなく部品点数を少なくできる点で有利であり、また取付作業を容易に済ませることができる。
【００１９】
なお、以上のような緩衝部材４の材質としては、例えばスチレン系、オレフィン系、ジオレフィン系、塩化ビニル系、ウレタン系、エステル系、アミド系、それらの水添化物、エポキシ化物などの熱可塑性エラストマー、天然ゴム、スチレンブタジエンゴム、クロロプレンゴム、ウレタンゴム、シリコーンゴム、アクリルゴム等を使用することができ、この中でも特に減衰性が優れる、つまり常温におけるｔａｎδが高い材料、ｔａｎδ＝０．４以上（１０Ｈｚ、２５℃）であるという点で、ブチルゴム、アクリルゴムが好ましい。
【００２０】
以上、一実施形態につき説明したが、情報処理装置としては例えばカーナビゲーション装置などでもよく、また外部記憶装置としても各種ディスクメディアのドライブ装置であってもよい。また、上記実施形態では、ハードディスク装置２に緩衝部材４を固定したが、格納部１ａに固定してもよい。また、この固定手段についても、ネジＮで固定するだけでなく、ピン止めや、ピンポイントで塗布した接着剤による固定でも良い。更に、上記実施形態では、緩衝部材４を一点止めしたが、ネジＮの固定箇所を通過するハードディスク装置２の長手方向に沿う線と平行な線上に止めるならば、非固定部４ｅが小さくならないため、複数箇所で連続的にまたは離散的に固定してもよい。非固定部４ｅが小さくなってもよければ、ネジＮの固定箇所の上側や下側で固定してもよい。上記実施形態では、筐体３の側面３ｃに緩衝部材４を取付けたが、縦置きや横置きなどハードディスク装置２を使用する姿勢に応じてその他の面に取付けてもよい。
【００２１】
次に、上記実施形態による実施例について説明する。
【００２２】
同一のハードディスク装置(2)（株式会社東芝製、２．５インチハードディスクドライブ（６ＧＢ）、MK6017MAP）を用いて、上記実施形態による緩衝部材の取付構造を実施例とし、前述した従来例による緩衝部材の取付構造を比較例とし振動減衰特性を比較した。
【００２３】
実施例および比較例ともに使用する緩衝部材(4)は、ショアＡで硬度５０°のブチルゴムを材質とする同一のものを用いた。また、比較例については、緩衝部材(4)の大きさを４種類変えたものを用意して比較例１〜比較例４とした。
【００２４】
試験方法は、図３でその概略を模式的に示すように、緩衝部材(4)を取付けたハードディスク装置(2)を治具(10)に固定し、衝撃試験装置（AVEX ELECTRONICS INC.(USA)製、SM-110-MP）を用いて鉛直方向で衝撃を与えた。なお、図３（ａ）は、従来例の取付構造であり、図３（ｂ）が実施例の取付構造である。そして、治具(10)に取付けた加速度ピックアップ(11)により測定される衝撃波形の最大ピーク値を入力加速度とし、ハードディスク装置(2)に取付けた加速度ピックアップ(12)により測定される衝撃波形の最大ピーク値を応答加速度とし、入力加速度に対する応答加速度の割合を応答倍率として、実施例と比較例１〜４とを比較した。この比較結果を次表に示す。
【００２５】
【表１】

【００２６】
この結果によれば、実施例と比較例１とでは、格納部(1a)の内側面に見立てた治具(10)に対するハードディスク装置(2)に取付けの緩衝部材(4)の接触面積（ｔ２×ｔ３）と、ハードディスク装置(2)からの突出厚（ｔ１）との双方が同一であるが、実施例の方が全ての入力加速度で応答倍率が小さく、衝撃・振動吸収性が優れている。また、実施例の取付構造であれば、比較例１の接触面積（ｔ２×ｔ３）を増大した比較例２に対し、接触面積が小さくても衝撃・振動吸収性に優れている。さらに、実施例の取付構造であれば、比較例１の突出厚（ｔ１）を増大した比較例３に対し、突出厚が半分として薄くても衝撃・振動吸収性に優れている。そして、実施例の取付構造であれば、比較例１の接触面積（ｔ２×ｔ３）と突出厚（ｔ１）の双方を増大した比較例４に対し、接触面積が小さく且つ突出厚が小さくても衝撃・振動吸収性に優れている。以上より、実施例による緩衝部材の取付構造であれば、従来例のそれよりも、緩衝部材(4)の突出厚や接触面積に依存しないため、取付スペースが狭小であっても、優れた減衰特性を発揮できることが容易に理解できる。特に、ノートブックタイプのパーソナルコンピュータ(1)では、ハードディスク装置(2)と格納部(1a)との隙間は１．０ｍｍ程度であり、緩衝部材(4)としてできるだけ薄いものが必要とされているが、本発明の取付構造であれば、このような場合であっても取付可能で且つ優れた衝撃・振動吸収性が得られる。
【００２７】
【発明の効果】
本発明による緩衝部材の取付構造によれば、緩衝部材の厚肉化に依存しなくても、外部記憶装置に作用する振動や衝撃に対して優れた減衰特性を発揮できる。したがって、緩衝部材を取付けるために外部記憶装置を小さくしたり、情報処理装置に設ける外部記憶装置の格納部を拡大しなくても良い。また、緩衝部材の取付スペースが狭小であっても取付可能で且つ優れた減衰特性を発揮できる。
【図面の簡単な説明】
【図１】本発明の一実施形態による緩衝部材の取付構造を示すハードディスク装置の外観斜視図。
【図２】図１のＳＡ−ＳＡ断面図。
【図３】実施例と比較例の衝撃試験の概要を模式的に示す説明図。
【図４】一従来例による緩衝部材の取付構造を示すハードディスク装置とノートブックタイプのパーソナルコンピュータの外観斜視図。
【図５】図４のハードディスク装置を格納部に収納した状態を模式的に示す内部説明図。
【符号の説明】
１パーソナルコンピュータ（情報処理装置）
１ａ格納部
２ハードディスク装置（外部記憶装置）
３筐体
３ａ上面
３ｂ底面
３ｃ側面
３ｄネジ孔
４緩衝部材
４ａ挿通孔
４ｂ上側突出部
４ｃ下側突出部
４ｄ当接面
４ｅ非固定部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for attenuating vibration transmitted between an external storage device such as a hard disk device incorporated in an information processing device such as a notebook type personal computer and a storage unit of the external storage device in the information processing device. .
[0002]
BACKGROUND OF THE INVENTION
For example, as shown in FIG. 4, a notebook type personal computer 1 which is an information processing apparatus stores a hard disk device 2 as an external storage device incorporating a disk-shaped storage medium. In the hard disk device 2, a buffer member 4 made of a thin plate-like elastic material is fixed to the upper surface 3 a and the bottom surface 3 b of the housing 3 with, for example, an adhesive tape (not shown). A similar buffer member 5 is also fixed to the side surface 3c of the housing 3 with an adhesive tape or the like. Then, as shown in FIG. 5, when the hard disk device 2 is stored in the storage unit 1a of the personal computer 1 and closed with the lid 1b, the

buffer members

4 and 5 are arranged in a state of being sandwiched between the gaps. In other words, it plays a role of attenuating vibrations transmitted between the two.
[0003]
By the way, since the capacity of the hard disk device 2 is increasing and the rotational speed is also increasing, the generated disturbance vibration becomes larger. In addition, in an information processing apparatus that can be carried and used on a vehicle such as a notebook-type personal computer 1, vibration that can be transmitted to the hard disk device 2 due to disturbance vibration is stronger. Become. Therefore, it is obvious that there is a limit to the vibration damping effect as it is, and further improvement of the damping effect is demanded using the

buffer members

4 and 5 that are advantageous in terms of space saving. Such a request for improvement is not specific to the relationship between the notebook type personal computer 1 and the hard disk device 2, but is a so-called disk-shaped recording medium such as the relationship between the in-vehicle car audio device and the hard disk device incorporated therein. There is also a demand for a relationship between a playback device and various information processing devices on which the playback device is mounted.
[0004]
[Problems to be solved by the invention]
And it is possible to thicken the

buffer members

4 and 5 as one means to meet such a request for improvement. However, if the

buffer members

4 and 5 are simply made thick, the gap between the storage unit 1a and the hard disk device 2 is very narrow, so that the

buffer members

4 and 5 are strongly compressed and behave like a rigid body. As a result, the attenuation characteristic is deteriorated, which is hardly practical. Further, it is not practical to enlarge the storage portion 1a to accommodate the thickened

buffer members

4 and 5 without difficulty, which is in contradiction to the demand for downsizing the device.
[0005]
Against this background, the present inventors have obtained the present invention as a result of diligent investigations, and the purpose thereof is to further reduce vibrations acting on the external storage device without depending on the thickening of the buffer member. It is to be able to attenuate effectively.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention has a shock-absorbing member that protrudes outwardly from the surface end of the side surface of the housing of the external storage device along the surface direction, and the side surface of the housing or the inner surface of the storage unit facing the housing. A cushioning member mounting structure characterized in that it is partially fixed at an in-plane portion of the contact surface with respect to any of the above.
[0007]
In the mounting structure of the present invention, the buffer member protrudes outward along the surface direction from the surface end of the side surface of the housing of the external storage device. For this reason, even if there is no buffer member 4 attached to the upper surface 3a and the bottom surface 3b of the housing 3 as in the conventional example, the projection portion of the buffer member projecting outward from the surface end of the housing side surface is elastic in the storage portion. Thus, an external storage device can be stored.
[0008]
Further, in the mounting structure of the present invention, the buffer member is partially fixed at an in-plane position of the abutting surface with respect to either the side surface of the housing or the inner side surface of the storage unit facing the housing. That is, unlike the conventional example, the side surface of the housing is used as a fixed surface, and it is not fixed so as to be restrained with respect to the entire fixed surface. For this reason, with the exception of the partial fixing points, the other portions can be elastically deformed without being disturbed by fixing, and a large effective deformation portion of the buffer member can be secured. Therefore, even if the protruding thickness of the protruding portion of the buffer member described above is small, an excellent vibration damping effect can be exhibited.
[0009]
The mounting location of the buffer member may be on the side surface of the external storage device housing or on the inner surface of the storage unit of the information processing apparatus facing the housing side surface. Further, the case side surface of the external storage device referred to here may be either a large surface portion with a large area or a small surface portion with a small area when there is a difference in area between the side surfaces constituting the housing. The same applies to the inner surface of the storage unit.
[0010]
The mounting structure of the buffer member can be configured to fix the buffer member at the center in the surface of the contact surface.
[0011]
According to this, the buffer member is fixed to the side surface of the housing of the external storage device or the inner surface of the storage unit at the central position in the surface of the contact surface of the buffer member. Therefore, the above-mentioned effective deformation portion can be secured with a good balance in all directions of the buffer member.
[0012]
To attach the buffer member as described above, specifically, by engaging a screw, an engagement pin, or the like with an engagement portion provided on the side surface of the housing of the external storage device or the inner surface of the storage portion. Fixing is preferable because the mounting operation can be facilitated. In this case, the engaging portion with the screw, the engaging pin, etc. can be configured to be provided specially for fixing the buffer member, but the existing portion provided on the side surface of the housing of the external storage device or the inner surface of the storage portion Screw holes and holes can also be used.
[0013]
Therefore, the buffer member mounting structure of the present invention is such that the external storage device is a hard disk device, the housing is the chassis, and the buffer member is fixed by screws that are screwed into existing screw holes provided in the chassis. Thus, the mounting operation of the buffer member is facilitated.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, about the same thing as a prior art, the same code | symbol is attached | subjected and duplication description is abbreviate | omitted.
[0015]
In this embodiment, as shown in FIG. 1, two buffer members 4 are provided at the corners of each side surface 3c of the hard disk device 2 as an “external storage device”, and the longitudinal direction thereof is the height direction of the hard disk device 2 (FIG. Install along the vertical direction. Specifically, as shown in FIG. 2, the screw N is inserted into the insertion hole 4a penetrating the buffer member 4, and screwed into the existing screw hole 3d formed in the side surface 3c of the housing 3, The buffer member 4 is fixed with a fastening force.
[0016]
Then, the buffer member 4 protrudes from the upper surface 3 a and the bottom surface 3 b of the housing 3. Of these, the upper protruding portion 4b contacts the storage portion 1a, and the lower protruding portion 4c contacts the lid 1b. Therefore, due to the contact between the upper protrusion 4b and the lower protrusion 4c, even if there is no buffer member 4 to be attached to the upper surface 3a and the bottom surface 3b of the housing 3 as in the conventional example, it is elastic in the storage portion 1a. The hard disk device 2 can be stored in the storage. Moreover, since the buffer member 5 of the conventional example can be replaced by the buffer member 4, its use can be abolished.
[0017]
And the buffer member 4 fixed to the side surface 3c of the housing | casing 3 is not necessarily fixed so that it may restrain with respect to the whole surface like a prior art example. In other words, the contact surface 4d that contacts the side surface 3c is partially restrained and fixed by the fastening force of the screw N in the surface of the contact surface 4d. For this reason, the non-fixed portion 4e in the vicinity of the fixed portion constrained by the fixed fastening force of the screw N can be elastically deformed without receiving the fixed fastening force of the screw N as an “effective deformation portion”. Therefore, the elastic deformation including not only the above-described upper protruding portion 4a and lower protruding portion 4b but also the non-fixed portion 4e does not require an increase in the protruding thickness of the upper protruding portion 4b and the lower protruding portion 4c. The damping effect can be demonstrated. Further, in this embodiment, the fixing location by the screw N is the in-plane central location on the abutting surface 4d of the buffer member 4 (FIGS. 1 and 2), and is not fixed to the biased location. Therefore, an effective deformation portion is ensured in a well-balanced manner in all directions of the buffer member 4, and attenuation characteristics can be exhibited without deviation.
[0018]
The buffer member 4 is fixed by screwing the screw N into the screw hole 3d. The screw hole 3d is an existing one in the hard disk device 2 of the present embodiment. Therefore, there is no need to prepare a special engagement structure in the hard disk device 2 for mounting the buffer member 4, which is advantageous in that the number of parts can be reduced, and the mounting operation can be easily performed.
[0019]
Examples of the material of the buffer member 4 as described above include thermoplastics such as styrene, olefin, diolefin, vinyl chloride, urethane, ester, amide, hydrogenated products, and epoxidized products thereof. Elastomers, natural rubber, styrene butadiene rubber, chloroprene rubber, urethane rubber, silicone rubber, acrylic rubber, etc. can be used, and among them, particularly excellent damping property, that is, a material with high tan δ at room temperature, tan δ = 0.4 or more Butyl rubber and acrylic rubber are preferable in that they are (10 Hz, 25 ° C.).
[0020]
Although one embodiment has been described above, the information processing device may be a car navigation device or the like, and may be a drive device of various disk media as an external storage device. Moreover, in the said embodiment, although the buffer member 4 was fixed to the hard-disk apparatus 2, you may fix to the storage part 1a. The fixing means is not only fixed with the screw N, but may be fixed with a pin or an adhesive applied at a pin point. Furthermore, in the above embodiment, the buffer member 4 is fixed at one point. However, if the buffer member 4 is stopped on a line parallel to the line along the longitudinal direction of the hard disk device 2 that passes through the fixed portion of the screw N, the non-fixed portion 4e does not become small. , It may be fixed continuously or discretely at a plurality of locations. If the non-fixed portion 4e may be small, it may be fixed on the upper side or the lower side of the fixing portion of the screw N. In the above embodiment, the buffer member 4 is attached to the side surface 3c of the housing 3. However, the cushion member 4 may be attached to other surfaces according to the posture of using the hard disk device 2 such as vertically or horizontally.
[0021]
Next, examples according to the above embodiment will be described.
[0022]
Using the same hard disk device (2) (manufactured by Toshiba Corporation, 2.5 inch hard disk drive (6 GB), MK6017MAP), the buffer member mounting structure according to the above embodiment is used as an example, and the buffer member according to the above-described conventional example is used as an example. The vibration damping characteristics were compared using the above mounting structure as a comparative example.
[0023]
The shock-absorbing member (4) used in both the examples and comparative examples was the same one made of butyl rubber having a hardness of 50 ° on Shore A. Moreover, about the comparative example, what changed the magnitude | size of the buffer member (4) 4 types was prepared, and it was set as the comparative example 1-the comparative example 4.
[0024]
As schematically shown in FIG. 3, the test method is as follows. The hard disk device (2) with the buffer member (4) attached is fixed to the jig (10), and the impact test device (AVEX ELECTRONICS INC. (USA ), SM-110-MP), was applied in the vertical direction. FIG. 3A shows a conventional mounting structure, and FIG. 3B shows the mounting structure of the embodiment. The maximum peak value of the impact waveform measured by the acceleration pickup (11) attached to the jig (10) is taken as the input acceleration, and the impact waveform measured by the acceleration pickup (12) attached to the hard disk device (2) The Example and Comparative Examples 1 to 4 were compared using the maximum peak value as the response acceleration and the ratio of the response acceleration to the input acceleration as the response magnification. The comparison results are shown in the following table.
[0025]
[Table 1]

[0026]
According to this result, in the example and the comparative example 1, the contact area (t2) of the buffer member (4) attached to the hard disk device (2) with respect to the jig (10) viewed from the inner surface of the storage portion (1a). Xt3) and the protruding thickness (t1) from the hard disk device (2) are both the same, but in the example, the response magnification is smaller at all input accelerations and the shock / vibration absorption is superior. . In addition, the mounting structure of the example is superior to the comparative example 2 in which the contact area (t2 × t3) of the comparative example 1 is increased, even if the contact area is small, it is excellent in shock and vibration absorption. Furthermore, the mounting structure of the example is excellent in shock and vibration absorption even if the protrusion thickness is as small as half of Comparative Example 3 in which the protrusion thickness (t1) of Comparative Example 1 is increased. In the mounting structure of the example, the contact area is small and the protrusion thickness is small as compared with the comparative example 4 in which both the contact area (t2 × t3) and the protrusion thickness (t1) of the comparative example 1 are increased. Excellent shock and vibration absorption. As described above, the shock absorber mounting structure according to the embodiment does not depend on the protrusion thickness and contact area of the shock absorber (4), and is excellent in attenuation even if the mounting space is narrower than that of the conventional example. It can be easily understood that the characteristics can be exhibited. In particular, in the notebook type personal computer (1), the gap between the hard disk device (2) and the storage unit (1a) is about 1.0 mm, and the buffer member (4) is required to be as thin as possible. However, the mounting structure of the present invention can be mounted even in such a case, and excellent shock / vibration absorbability can be obtained.
[0027]
【The invention's effect】
According to the shock absorber mounting structure of the present invention, it is possible to exhibit excellent damping characteristics against vibrations and impacts acting on the external storage device without depending on the thickening of the shock absorber. Therefore, it is not necessary to make the external storage device small in order to attach the buffer member, or to enlarge the storage unit of the external storage device provided in the information processing device. Moreover, even if the mounting space of the buffer member is narrow, it can be mounted and can exhibit excellent damping characteristics.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a hard disk device showing an attachment structure of a buffer member according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line SA-SA in FIG.
FIG. 3 is an explanatory diagram schematically showing an outline of an impact test of an example and a comparative example.
FIG. 4 is an external perspective view of a hard disk device and a notebook type personal computer showing a buffer member mounting structure according to a conventional example.
5 is an internal explanatory view schematically showing a state in which the hard disk device of FIG. 4 is housed in a storage unit.
[Explanation of symbols]
1 Personal computer (information processing equipment)
1a Storage unit 2 Hard disk device (external storage device)
3 Housing

3a Upper surface

3b Bottom surface

3c Side surface

3d Screw hole 4 Buffer member

4a Insertion hole

4b Upper protrusion

4c Lower protrusion

4d Contact surface 4e Non-fixed part

Claims

A thin plate that attenuates vibrations transmitted between the storage unit and the external storage device in the gap between the external storage device that houses the disk-shaped storage medium in the housing and the storage unit of the external storage device provided in the information processing device In the structure to attach the cushioning member made of elastic material,
The buffer member, are made to protrude outward along the surface edge of the case side of the hard disk drive as an external storage device in the surface direction, a portion of the abutment surface in contact with the casing side, the casing side A state in which the side surface of the housing is restrained by a fastening force of a screw that is screwed into an existing screw hole provided in the outer periphery, and a non-fixed portion that is not restrained by the fastening force on the side surface of the housing A mounting structure for a shock-absorbing member, which is fixed to the side of the casing.

The cushioning member mounting structure according to claim 1, wherein the cushioning member is fixed at a central position in the surface of the contact surface.