JPH067517Y2 - Fixed magnetic disk unit cover mounting structure - Google Patents
Fixed magnetic disk unit cover mounting structureInfo
- Publication number
- JPH067517Y2 JPH067517Y2 JP2236488U JP2236488U JPH067517Y2 JP H067517 Y2 JPH067517 Y2 JP H067517Y2 JP 2236488 U JP2236488 U JP 2236488U JP 2236488 U JP2236488 U JP 2236488U JP H067517 Y2 JPH067517 Y2 JP H067517Y2
- Authority
- JP
- Japan
- Prior art keywords
- base
- cover
- magnetic disk
- mounting structure
- end side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 産業上の利用分野 本考案は固定ディスク装置のカバー取付け構造に関す
る。The present invention relates to a cover mounting structure for a fixed disk device.
固定磁気ディスク装置では、磁気ディスク上のトラック
ピッチは極く狭く、ベースの熱歪がオフトラックに及ぼ
す影響も無視できない。In a fixed magnetic disk device, the track pitch on the magnetic disk is extremely narrow, and the effect of thermal strain of the base on off-track cannot be ignored.
従って、カバーの取付けについてもベースに熱歪が発生
しにくい構造とすることが必要とされる。Therefore, it is also necessary to attach the cover so that the base is less likely to suffer thermal strain.
従来の技術 従来は、第７図に示すように、カバー１は、各コーナ及
び中間位置を全てねじ２によりねじ止めされてベース３
に取り付けてある。ベース３には磁気ディスク４及び磁
気ヘッド機構５が組み込まれている。2. Description of the Related Art Conventionally, as shown in FIG. 7, the cover 1 has a base 3 which is screwed at each corner and intermediate position by screws 2.
It is attached to. A magnetic disk 4 and a magnetic head mechanism 5 are incorporated in the base 3.
考案が解決しようとする問題点 このようにカバー１をベース３に完全に固定した場合に
は、両者はバイメタルと似た構造となり、ベース３とカ
バー１とが異なる材質の場合には勿論であるが両者が同
じ材質であった場合にも、両者の温度分布の違いにより
両者の変形が不均一となり、ベース３は反ったりねじれ
たりするような熱歪を起こし、比較的大きいオフトラッ
クが生じてしまう。Problems to be Solved by the Invention When the cover 1 is completely fixed to the base 3 as described above, both have a structure similar to bimetal, and of course, when the base 3 and the cover 1 are made of different materials. Even if both are made of the same material, the deformation of both becomes non-uniform due to the difference in temperature distribution of both, and the base 3 causes thermal strain such as warping or twisting, resulting in a relatively large off-track. I will end up.
またねじ２を６本使用しており、ねじ締め工数も多い。Also, since 6 screws 2 are used, the number of screw tightening steps is large.
本考案は上記問題点を解決した固定磁気ディスク装置の
カバー取付け構造を提供することを目的する。An object of the present invention is to provide a cover mounting structure for a fixed magnetic disk device which solves the above problems.
問題点を解決するための手段 第１図中、１０はカバー、１１はベースである。Means for Solving the Problems In FIG. 1, 10 is a cover and 11 is a base.
カバー１０は、長手方向一端側に突出した腕部１２，１
３を有する。The cover 10 includes arm portions 12 and 1 protruding toward one end in the longitudinal direction.
Have three.
ベース１１は、その長手方向上一端側に、略逆Ｕ文字状
の係止部１４，１５が設けてある。The base 11 is provided with substantially U-shaped locking portions 14 and 15 on one end side in the longitudinal direction thereof.
カバー１０は、第２図に併せて示すように、その長手方
向上一端側については、腕部１２，１３を係止部１４，
１５に係止されて、他端側についてはコーナをねじ１
６，１７によりねじ止めされて、ベース１１に取り付け
てある。As shown in FIG. 2 as well, the cover 10 has the arm portions 12 and 13 on the upper end side in the longitudinal direction and the locking portions 14 and 13.
It is locked to 15 and the corner is screwed on the other end 1
It is fixed to the base 11 with screws 6 and 17.
腕部１２，１３と係止部１４，１５とは、腕部１２，１
３の上面１２ａ，１３ａが係止部１４，１５の下面１４
ａ，１５ａに当接した関係にある。The arm portions 12, 13 and the locking portions 14, 15 are the arm portions 12, 1
The upper surfaces 12a and 13a of the lower surface 3 of FIG.
It is in a relationship of contacting a and 15a.
作用 カバー１０とベース１１とは、その長手方向上一端側に
ついては、面１２ａ，１３ａと面１４ａ，１５ａとがす
べって矢印Ｘで示す長手方向について相対的にずれるこ
とが可能な状態、即ち長手方向について自由度を有する
関係にある。As for the cover 10 and the base 11, the surfaces 12a, 13a and the surfaces 14a, 15a on the upper end side in the longitudinal direction are slipped relative to each other in the longitudinal direction indicated by the arrow X, that is, the longitudinal direction. There is a degree of freedom in the direction.
この腕部１２，１３と係止部１４，１５との係止構造
が、カバー１０とベース１１との変形の不均一を吸収
し、ベース１１は反るような熱歪は起こさない。The locking structure of the arm portions 12 and 13 and the locking portions 14 and 15 absorbs the nonuniform deformation of the cover 10 and the base 11, and the base 11 does not warp.
実施例 第３図は本考案の固定磁気ディスク装置のカバー取付構
造の一実施例の平面図であり、カバーの一部を切除して
示してある。第４図，第５図，第６図は夫々第３図中IV
−IV線，Ｖ−Ｖ線，VI−VI線方向よりみた矢視図であ
る。Embodiment FIG. 3 is a plan view of an embodiment of a cover mounting structure for a fixed magnetic disk drive according to the present invention, in which a part of the cover is cut away. 4, 5, and 6 are IV in FIG. 3, respectively.
It is the arrow line view seen from the-IV line, the VV line, and the VI-VI line direction.
各図中、第１図及び第２図に示す構成部分と対応する部
分には同一符号を付す。In each drawing, the same reference numerals are given to the portions corresponding to the constituent portions shown in FIGS. 1 and 2.
２０はシャーシであり、二点鎖線で示す。これにベース
１１が防振部材を介して取り付けられている。Reference numeral 20 denotes a chassis, which is indicated by a chain double-dashed line. The base 11 is attached to this via a vibration isolating member.
ベース１１内には、磁気ディスク２１及び磁気ヘッド機
構２２が組み込まれている。A magnetic disk 21 and a magnetic head mechanism 22 are incorporated in the base 11.
カバー１０及びベース１１は共にダイキャスト部品であ
る。Both the cover 10 and the base 11 are die cast parts.
係止部１４は、ベース１１の一端側の一のコーナに形成
してあり、柱部２４，２５とその間を結ぶ梁部２６とよ
りなる。The locking portion 14 is formed at one corner on the one end side of the base 11, and is composed of the pillar portions 24 and 25 and the beam portion 26 connecting them.
係止部１５は、ベース１１の上記一端側の反対側のコー
ナに同様に形成してあり、柱部２７，２８と梁部２９と
よりなる。The locking portion 15 is similarly formed in the corner on the opposite side of the one end side of the base 11, and is composed of column portions 27 and 28 and a beam portion 29.
腕部１２，１３はカバー１０の一端側の円弧部分の途中
の部位に突設してある。The arm portions 12 and 13 are provided so as to project in the middle of the arc portion on the one end side of the cover 10.
カバー１０とベース１１とは、その長手方向上一端側に
ついては、腕部１２，１３の上面１２ａ，１３ａが梁部
２６，２９の下面２６ａ，２９ａに当接して矢印Ｘで示
すカバー１０及びベース１１の長手方向上自由度を有し
て係止され、他端側についてはねじ１６，１７により各
コーナをねじ止めしてある。As for the cover 10 and the base 11, the upper surfaces 12a and 13a of the arm portions 12 and 13 are in contact with the lower surfaces 26a and 29a of the beam portions 26 and 29 on the upper end side in the longitudinal direction, and the cover 10 and the base indicated by the arrow X are shown. 11 has a degree of freedom in the longitudinal direction, and each corner is screwed to the other end with screws 16 and 17.
このためカバー１０及びベース１１の熱膨張が不均一で
ある場合にも、この不均一は、腕部１２，１３と係止部
１４，１５との係止部分で吸収され、ベース１１には反
ったりねじれたりするような熱歪は発生しない。このた
め、熱膨張収縮がオフトラックに及ぼす影響は極めて小
となる。Therefore, even if the thermal expansions of the cover 10 and the base 11 are non-uniform, this non-uniformity is absorbed by the engaging portions of the arm portions 12 and 13 and the engaging portions 14 and 15, and the base 11 is not warped. No thermal strain such as twisting or twisting occurs. Therefore, the influence of thermal expansion and contraction on off-track is extremely small.
カバー１０及びベース１１の熱膨張収縮の程度はその幅
方向より長手方向の方が大となる。よって上記熱膨張の
不均一の程度も、長手方向の方が幅方向より大となる。
本実施例は、程度の大きい長手方向の熱膨張の不均一を
吸収するものであるため、幅方向上の不均一を吸収する
構成に比べて、オフトラックを小とする上で効果的であ
る。The degree of thermal expansion and contraction of the cover 10 and the base 11 is greater in the longitudinal direction than in the width direction. Therefore, the degree of non-uniformity of the thermal expansion is larger in the longitudinal direction than in the width direction.
Since this embodiment absorbs a large degree of nonuniform thermal expansion in the longitudinal direction, it is effective in reducing the off-track as compared with the configuration that absorbs the nonuniformity in the width direction. .
また、係止部１４，１５はベース１１のコーナに形成し
ており、カバー１０の一端側は円弧状としてあり、腕部
１２，１３はベース１１のコーナに対向する部位に形成
してある。これにより、腕部１２，１３の係止は、ベー
ス１１の一端側のコーナでなされ、カバー１０及びベー
ス１１の長手寸法を特別長くする必要はない。Further, the locking portions 14 and 15 are formed at the corners of the base 11, one end side of the cover 10 has an arc shape, and the arm portions 12 and 13 are formed at portions facing the corners of the base 11. Accordingly, the arm portions 12 and 13 are locked at the corners on the one end side of the base 11, and it is not necessary to particularly lengthen the longitudinal dimensions of the cover 10 and the base 11.
また、第３図及び第５図に示すように、腕部１２，１３
の内側の側面間の寸法Ｗ１は、柱部２４，２７の側面間
の寸法Ｗ２より若干大に定めてある。Further, as shown in FIGS. 3 and 5, the arm portions 12, 13 are
The dimension W 1 between the inner side surfaces of the column is set to be slightly larger than the dimension W 2 between the side surfaces of the pillar portions 24 and 27.
このため、カバー１０とベース１１とは上記一端側につ
いては、矢印Ｙで示す幅方向についても熱膨張の差を吸
収できる。しかも、カバー１０とベース１１との幅方向
へのずれも制限されている。Therefore, on the one end side of the cover 10 and the base 11, the difference in thermal expansion can be absorbed also in the width direction indicated by the arrow Y. Moreover, the shift of the cover 10 and the base 11 in the width direction is also limited.
また３０はパッキンであり、気密のためにカバー１０と
ベース１１とが突き合わされた部分に全周に亘って設け
てある。Further, 30 is a packing, which is provided over the entire circumference in a portion where the cover 10 and the base 11 are abutted with each other for airtightness.
このパッキン３０は、第４図に示すように、自然な状態
では厚さがｔ１であるが、圧縮されて厚さがｔ２となっ
ている。このパッキン３０には圧縮により弾撥力Ｆが生
じており、この力Ｆによりカバー１０の上記一端側は上
方に押し上げられ、腕部１２，１３が梁部２６，２９に
押し付けられて安定に固定されている。As shown in FIG. 4, the packing 30 has a thickness t 1 in a natural state, but is compressed to a thickness t 2 . The packing 30 has an elastic repulsive force F generated by compression, and the force F pushes the one end side of the cover upward, and the arms 12 and 13 are pressed against the beams 26 and 29 to be stably fixed. Has been done.
なお、カバー１０は、最初にパッキン３０を押し縮めて
腕部１２，１３を係止部１４，１５内に嵌合させ、次い
で他端側をねじ１６，１７によりねじ止めする順序で取
り付ける。The cover 10 is attached in the order in which the packing 30 is first compressed and the arms 12 and 13 are fitted into the locking portions 14 and 15, and then the other ends are screwed with the screws 16 and 17.
ねじ止めの個所は二個所と少なく、ねじ締め工数は従来
に比べて少なくなる。There are only two places for screwing, and the number of screw tightening steps is smaller than in the past.
考案の効果 以上説明した様に、本考案になる固定磁気ディスク装置
のカバー取付け構造によれば、長手方向上一端側がカバ
ーとベースとの熱膨張収縮量の差分を吸収しうる構成と
なっており、ベースに捩れたり反ったりするような熱歪
が生ずることを防止することが出来、熱歪によるオフト
ラックを極く小さく抑えることが出来る。Effect of the Invention As described above, according to the cover mounting structure of the fixed magnetic disk drive of the present invention, the one end side in the longitudinal direction can absorb the difference in thermal expansion and contraction amount between the cover and the base. In addition, it is possible to prevent the occurrence of thermal strain such as twisting or warping of the base, and it is possible to suppress off-track due to thermal strain to an extremely small level.
またねじ止めは他端側だけに限られるため、ねじ締めの
工数を従来のものに比べて少なく出来る。Further, since the screwing is limited to only the other end side, the number of steps for screwing can be reduced as compared with the conventional one.
第１図は本考案の固定磁気ディスク装置のカバー取付構
造の概略分解斜視図、 第２図はカバー取付状態を示す図、 第３図は本考案の固定磁気ディスク装置のカバー取付構
造の一実施例をカバーの一部を切截して示す平面図、 第４図は第３図中IV−IV線に沿う断面矢視図、 第５図は第３図中Ｖ−Ｖ線方向よりみた矢視図、 第６図は第３図中VI−VI線に沿う断面矢視図、 第７図は従来のカバー取付構造を示す図である。 １０……カバー、１１……ベース、１２，１３……腕
部、１２ａ，１３ａ……上面、１４，１５……係止部、
１４ａ，１５ａ，２６ａ，２９ａ……下面、１６，１７
……ねじ、２１……磁気ディスク、２２……磁気ヘッド
機構、２４，２５，２７，２８……柱部、２６，２９…
…梁部。FIG. 1 is a schematic exploded perspective view of a cover mounting structure for a fixed magnetic disk device according to the present invention, FIG. 2 is a view showing a cover mounting state, and FIG. 3 is an embodiment of a cover mounting structure for a fixed magnetic disk device according to the present invention. FIG. 4 is a plan view showing a part of the cover cut away, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, and FIG. 5 is an arrow seen from the direction VV in FIG. Fig. 6 is a sectional view taken along line VI-VI in Fig. 3, and Fig. 7 is a view showing a conventional cover mounting structure. 10 ... Cover, 11 ... Base, 12, 13 ... Arm part, 12a, 13a ... Top surface, 14, 15 ... Locking part,
14a, 15a, 26a, 29a ... lower surface, 16, 17
...... Screw, 21 ...... Magnetic disk, 22 ...... Magnetic head mechanism, 24,25,27,28 ...... Pillar section, 26,29 ...
… Beam part.
Claims (1)
カバーを取り付ける構造において、 該カバーの長手方向上一端側に腕部を設け、 上記ベースの長手方向上一端側に、その下面で上記腕部
を係止する係止部を設け、 上記カバーがその一端側を上記腕部を上記係止部に係止
され、他端側をねじ止めされて上記ベースに取り付けら
れてなる構成の固定磁気ディスク装置のカバー取付け構
造。1. A structure for attaching a cover to a base in which a magnetic disk is incorporated, wherein an arm portion is provided on an upper end side in a longitudinal direction of the cover, and the arm portion is provided on an upper end side in a longitudinal direction of the base with a lower surface thereof. A fixed magnetic disk having a locking portion for locking the arm, one end side of the cover being locked to the arm portion and the other end screwed to the base. Device cover mounting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2236488U JPH067517Y2 (en) | 1988-02-24 | 1988-02-24 | Fixed magnetic disk unit cover mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2236488U JPH067517Y2 (en) | 1988-02-24 | 1988-02-24 | Fixed magnetic disk unit cover mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01133285U JPH01133285U (en) | 1989-09-11 |
| JPH067517Y2 true JPH067517Y2 (en) | 1994-02-23 |
Family
ID=31240415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2236488U Expired - Lifetime JPH067517Y2 (en) | 1988-02-24 | 1988-02-24 | Fixed magnetic disk unit cover mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067517Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4575253B2 (en) * | 2005-08-26 | 2010-11-04 | ヒタチグローバルストレージテクノロジーズネザーランドビーブイ | Magnetic disk unit |
-
1988
- 1988-02-24 JP JP2236488U patent/JPH067517Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01133285U (en) | 1989-09-11 |
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