JPS6312427Y2 - - Google Patents
Info
- Publication number
- JPS6312427Y2 JPS6312427Y2 JP285083U JP285083U JPS6312427Y2 JP S6312427 Y2 JPS6312427 Y2 JP S6312427Y2 JP 285083 U JP285083 U JP 285083U JP 285083 U JP285083 U JP 285083U JP S6312427 Y2 JPS6312427 Y2 JP S6312427Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- notch
- protrusion
- magnetic
- reference surface
- 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
Links
- 239000000696 magnetic material Substances 0.000 claims description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、磁気デイスクを用いる記録再生装置
において、磁気デイスクを着脱自在に装着し、こ
れを回転駆動する磁気デイスクの回転装着台に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rotating magnetic disk mounting table for removably mounting a magnetic disk and driving the magnetic disk in rotation in a recording/reproducing apparatus using a magnetic disk.
背景技術とその問題点
磁気デイスク上に複数、例えば25本の同心円状
の記録トラツクを設け、各々のトラツクに撮像装
置からの１フイールドまたは１フレーム分の映像
信号を環状に記録し、再生に際しては、各トラツ
ク毎にいわゆる静止画像を得るようにした記録再
生装置が提案されている。BACKGROUND TECHNOLOGY AND PROBLEMS A plurality of concentric recording tracks, for example 25, are provided on a magnetic disk, and one field or one frame worth of video signal from an imaging device is recorded on each track in an annular manner. A recording/reproducing apparatus has been proposed which obtains a so-called still image for each track.
このような記録再生装置において、磁気デイス
クを、装置の回転軸に対して容易に着脱し、かつ
安定に回転駆動できるようにするために、小型の
装置にあつては磁力による吸着力を利用すること
が行われている。 In such a recording/reproducing device, in order to enable the magnetic disk to be easily attached to and removed from the rotation shaft of the device and to be driven to rotate stably, small devices use magnetic attraction. things are being done.
第１図及び第２図はその一例を示すもので、１
は記録再生装置側の回転軸を示し、図示しないが
モータ等の駆動源により回転される。２は回転台
であつて、この回転台２の一面上（図面では上
面）に、回転軸１を中心として環状の基準面形成
部材３が形成され、その上面が基準面４となるよ
うにいわゆる面出しが施されている。この部材３
の内側に同様に環状をなす磁石５が取付けられて
いる。 Figures 1 and 2 show an example.
indicates a rotating shaft on the recording/reproducing device side, which is rotated by a drive source such as a motor (not shown). Reference numeral 2 denotes a rotary table, and on one surface (the upper surface in the drawing) of the rotary table 2, an annular reference surface forming member 3 is formed with the rotating shaft 1 as the center, and the so-called so-called reference surface forming member 3 is formed so that the upper surface thereof becomes the reference surface 4. It has been surfaced. This member 3
A similarly annular magnet 5 is attached to the inside of the holder.
また第２図において、６は全体として上述の装
置に装着する磁気デイスク装置を示すもので、７
は略環状をなしたセンタコアであり、これに環状
のヨーク８が取付けられる。このヨーク８の一面
上に磁気デイスク９が配置され、センタコア７の
かしめにより、これとヨーク８との間に磁気デイ
スク９が挾持される。１０は弾性部材である。 Further, in FIG. 2, 6 indicates a magnetic disk device to be attached to the above-mentioned device as a whole, and 7
is a substantially annular center core, to which an annular yoke 8 is attached. A magnetic disk 9 is arranged on one surface of the yoke 8, and the magnetic disk 9 is held between this and the yoke 8 by caulking the center core 7. 10 is an elastic member.
センタコア７は通常は樹脂にて形成される。ま
たヨーク８は金属材料にて形成され、その下面が
基準面１１となされている。１２はジヤケツト、
１３はこれに形成された透孔である。またヨーク
８の一部が回転軸１と同一方向となるように切起
されて切起し片１４が形成され、センタコア７の
上面に臨まされる。さらに磁気デイスク装置６を
回転台２に装着したとき切起し片１４と対向する
位置に磁束検出器１５が設けられ、切起し片１４
からの磁束を検出して磁気デイスク９の回転位置
を検知するいわゆるパルス発生器が形成される。 The center core 7 is usually made of resin. Further, the yoke 8 is made of a metal material, and its lower surface serves as a reference surface 11. 12 is a jacket,
13 is a through hole formed in this. Further, a part of the yoke 8 is cut and raised in the same direction as the rotating shaft 1 to form a cut and raised piece 14, which faces the upper surface of the center core 7. Furthermore, a magnetic flux detector 15 is provided at a position facing the cut and raised piece 14 when the magnetic disk device 6 is mounted on the rotary table 2.
A so-called pulse generator is formed which detects the rotational position of the magnetic disk 9 by detecting the magnetic flux from the magnetic disk 9.
そして第２図に示すように、磁気デイスク装置
６を記録再生装置の回転台２に装着すると、記録
再生装置側の基準面４と磁気デイスク装置６側の
基準面１１とが互いに衝合し、記録再生装置に対
する磁気デイスク９の位置決めがなされる。また
ヨーク８が磁石５に吸着し、これによつて磁気デ
イスク９は回転軸１と一体に回転し、磁束検出器
１５の出力を基準にして上述の記録または再生が
行われる。 As shown in FIG. 2, when the magnetic disk device 6 is mounted on the rotary table 2 of the recording and reproducing device, the reference surface 4 on the recording and reproducing device side and the reference surface 11 on the magnetic disk device 6 side collide with each other. The magnetic disk 9 is positioned with respect to the recording/reproducing device. Furthermore, the yoke 8 is attracted to the magnet 5, whereby the magnetic disk 9 rotates together with the rotary shaft 1, and the above-described recording or reproduction is performed based on the output of the magnetic flux detector 15.
ところがこの装置において、磁石５を部材３の
内側に設けるために磁石５の形状が小さくなり、
充分な吸着が行えないおそれがある。これに対し
て磁石５を部材３の外側に設けた場合は、ヨーク
８をその分大きくしなければならず、磁気デイス
ク９の記録部分が狭くなるか、あるいは基準面４
の回転軸１からの距離が小さくなつて位置決めの
安定性がなくなる。さらに部材３を磁性体で形成
し、磁路を形成して磁力を高めることも考えられ
たが、この場合に基準面４を磁性体で形成する
と、この部分に磁性粉等が吸着して正しい基準面
が得られなくなるおそれがあつた。 However, in this device, since the magnet 5 is provided inside the member 3, the shape of the magnet 5 becomes small.
Sufficient adsorption may not be possible. On the other hand, if the magnet 5 is provided outside the member 3, the yoke 8 must be made that much larger, and the recording area of the magnetic disk 9 becomes narrower, or the reference surface
As the distance from the rotating shaft 1 becomes smaller, the positioning becomes unstable. Furthermore, it was considered that the member 3 was made of a magnetic material and a magnetic path was formed to increase the magnetic force, but in this case, if the reference surface 4 was made of a magnetic material, magnetic powder etc. would be attracted to this part and the correct There was a risk that a reference plane could not be obtained.
考案の目的
本考案はこのような点にかんがみ、簡単な構成
で容易に正確な基準面が得られ、かつ充分な吸着
が行えるようにするものである。Purpose of the invention In view of the above points, the present invention is intended to easily obtain an accurate reference surface with a simple configuration and to perform sufficient suction.
考案の概要
本考案は、磁気デイスクを回転させるべき回転
台の一面上に、第１の平面部とこの第１の平面部
より所定の高さを持ち環状で略等角間隔に少くと
も３箇所の切欠の設けられた段部とを有し磁石に
て形成された第１の部材、及び、第２の平面部と
この第２の平面部より上記所定の高さより高くそ
の頂部が基準面になると共に上記段部の切欠に対
応する位置に設けられた突起とを有し非磁性体に
て形成された第２の部材を、上記切欠に上記突起
が挿入されるように嵌合し、上記段部及び突起の
成す円周の中心が上記回転台の回転軸と一致する
ように取付けてなる磁気デイスクの回転装着台で
あつて、これによれば簡単な構成で容易に正確な
基準面が得られ、かつ充分な吸着を行うことがで
きる。Summary of the invention The present invention has a first plane part and at least three locations at a predetermined height above the first plane part at approximately equal angular intervals on one surface of the rotary table on which a magnetic disk is to be rotated. a first member formed of a magnet and having a stepped part provided with a notch; a second flat part; At the same time, a second member formed of a non-magnetic material and having a protrusion provided at a position corresponding to the notch of the stepped portion is fitted so that the protrusion is inserted into the notch, A rotary mounting table for a magnetic disk, which is mounted so that the center of the circumference formed by the stepped portion and the protrusion coincides with the rotation axis of the rotary table, and with this, it is possible to easily obtain an accurate reference surface with a simple configuration. can be obtained and sufficient adsorption can be performed.
実施例
第３図、第４図及び第５図において、２１は第
１の部材を示す。この部材２１は、中央に回転軸
１の挿通される透孔の設けられた平面部２２と、
この平面部２２の周縁部に所定の高さを持ち環状
で略等角度間隔に少くとも３箇所の切欠２３ａ，
２３ｂ，２３ｃの設けられた段部２４とを有し、
全体が磁石で形成される。Embodiment In FIGS. 3, 4, and 5, 21 indicates the first member. This member 21 includes a flat part 22 provided with a through hole in the center through which the rotating shaft 1 is inserted;
At least three annular notches 23a having a predetermined height and spaced at approximately equal angular intervals are provided on the peripheral edge of the flat portion 22,
It has a stepped portion 24 provided with 23b and 23c,
The entire structure is made of magnets.
また３１は第２の部材を示す。この部材３１
は、部材２１の外周に沿う平面部３２と、この平
面部３２の内側に上述の部材２１の所定の高さよ
り高くその頂部が基準面３３になるように面出し
がされると共に部材２１の切欠２３ａ〜２３ｃに
対応する位置に設けられた突起３４ａ，３４ｂ，
３４ｃとを有し、全体が非磁性体で形成される。 Further, 31 indicates a second member. This member 31
is a flat part 32 along the outer circumference of the member 21, and a notch in the member 21, which has a surface raised to a height higher than the predetermined height of the member 21 and whose top becomes a reference surface 33 on the inside of this flat part 32. Protrusions 34a, 34b provided at positions corresponding to 23a to 23c,
34c, and is entirely made of non-magnetic material.
この部材２１，３１が、切欠２３ａ〜２３ｃに
突起３４ａ〜３４ｃがそれぞれ挿入されるように
嵌合され、この嵌合された部材２１，３１が回転
台２の一面上に接着等により取付けられる。 The members 21, 31 are fitted so that the protrusions 34a to 34c are inserted into the notches 23a to 23c, respectively, and the fitted members 21, 31 are attached to one surface of the rotary table 2 by adhesive or the like.
従つてこの装置において、部材２１，３１が回
転台２上に取付けられた状態では、段部２４の上
面と突起３４ａ〜３４ｃの頂部とは第４図に示す
ように回転軸１を中心とする円周上に交互に配置
される。そして第５図に示すように磁気デイスク
装置６を装着すると、突起３４ａ〜３４ｃの頂部
の基準面３３と磁気デイスク装置６のヨーク８の
下面の基準面１１とが互いに衝合し、磁気デイス
ク９の位置決めがなされる。またヨーク８が磁石
によつて形成された部材２１の段部２４の上面に
吸着し、これによつて磁気デイスク９は回転軸１
と一体に回転し、上述の記録または再生が行われ
る。 Therefore, in this device, when the members 21 and 31 are mounted on the rotary table 2, the upper surface of the stepped portion 24 and the tops of the protrusions 34a to 34c are centered on the rotary shaft 1 as shown in FIG. Arranged alternately on the circumference. When the magnetic disk device 6 is mounted as shown in FIG. positioning is performed. Further, the yoke 8 is attracted to the upper surface of the stepped portion 24 of the member 21 formed by a magnet, so that the magnetic disk 9 is attached to the rotating shaft 1.
The recording or reproduction described above is performed.
そしてこの装置において、基準面３３となる突
起３４ａ〜３４ｃと吸着を行う段部２４とが同一
円周上にあるので、ヨーク８を大きくすることな
く、安定な位置決めと充分な吸着を行うことがで
きる。 In this device, since the protrusions 34a to 34c that serve as the reference surface 33 and the step portion 24 that performs suction are on the same circumference, stable positioning and sufficient suction can be performed without increasing the size of the yoke 8. can.
なお、磁気デイスク９に図示のように隙間防止
用のスカート１５や図示しない回り止め等を形成
することもできる。 Note that the magnetic disk 9 may be provided with a skirt 15 for preventing a gap, a rotation stopper (not shown), etc. as shown in the drawing.
また各突起３４ａ〜３４ｃが部材３１として一
体に形成されているので、これらの突起３４ａ〜
３４ｃによる基準面３３の面出しを極めて正確、
かつ容易に行うことができる。さらに各突起３４
ａ〜３４ｃが一体に形成されているので回転台２
への取付けも容易であり、取付け後の精度も極め
て高くすることができる。 Further, since each of the protrusions 34a to 34c is integrally formed as the member 31, these protrusions 34a to 34c
The leveling of the reference surface 33 using 34c is extremely accurate.
And it can be done easily. Furthermore, each protrusion 34
Since a to 34c are integrally formed, the rotary table 2
It is easy to install, and the accuracy after installation can be extremely high.
さらに第６図及び第７図は他の例を示す。この
例では第１の部材２１を外側に設け、第２の部材
３１を内側に設けた場合である。この例において
も吸着を行う段部２４と基準面３３を同一円周上
に設けることができ、上述と同様の作用効果が得
られる。 Furthermore, FIGS. 6 and 7 show other examples. In this example, the first member 21 is provided on the outside and the second member 31 is provided on the inside. Also in this example, the step portion 24 that performs suction and the reference surface 33 can be provided on the same circumference, and the same effect as described above can be obtained.
考案の効果
本考案によれば、簡単な構成で容易に正確な基
準面が得られ、かつ充分な吸着を行うことができ
た。Effects of the invention According to the invention, an accurate reference plane could be easily obtained with a simple configuration, and sufficient suction could be performed.
第１図、第２図は従来の装置の構成図、第３図
〜第５図は本考案の一例の構成図、第６図、第７
図は他の例の構成図である。
２１は第１の部材、２２は平面部、２３ａ〜２
３ｃは切欠、２４は段部、３１は第２の部材、３
２は平面部、３３は基準面、３４ａ〜３４ｃは突
起である。
Figures 1 and 2 are block diagrams of a conventional device, Figures 3 to 5 are diagrams of an example of the present invention, and Figures 6 and 7 are
The figure is a configuration diagram of another example. 21 is a first member, 22 is a plane part, 23a to 2
3c is a notch, 24 is a stepped portion, 31 is a second member, 3
2 is a flat surface, 33 is a reference surface, and 34a to 34c are projections.
Claims (1)
に、第１の平面部とこの第１の平面部より所定の
高さを持ち環状で略等角間隔に少くとも３箇所の
切欠の設けられた段部とを有し磁石にて形成され
た第１の部材、及び、第２の平面部とこの第２の
平面部より上記所定の高さより高くその頂部が基
準面になると共に上記段部の切欠に対応する位置
に設けられた突起とを有し非磁性体にて形成され
た第２の部材を、上記切欠に上記突起が挿入され
るように嵌合し、上記段部及び突起の成す円周の
中心が上記回転台の回転軸と一致するように取付
けてなる磁気デイスクの回転装着台。 On one surface of the rotary table on which the magnetic disk is to be rotated, there is provided a first plane part and a step having a predetermined height from the first plane part and having at least three annular notches at approximately equal angular intervals. a first member formed of a magnet and having a second flat part, the top of which is higher than the predetermined height and serves as a reference plane, and a notch in the stepped part; A second member formed of a non-magnetic material and having a protrusion provided at a position corresponding to the notch is fitted so that the protrusion is inserted into the notch, and the circle formed by the step and the protrusion is fitted. A rotary mounting base for a magnetic disk, which is mounted so that the center of its periphery coincides with the rotation axis of the rotary base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP285083U JPS59112385U (en) | 1983-01-13 | 1983-01-13 | Magnetic disk rotation mounting stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP285083U JPS59112385U (en) | 1983-01-13 | 1983-01-13 | Magnetic disk rotation mounting stand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59112385U JPS59112385U (en) | 1984-07-28 |
| JPS6312427Y2 true JPS6312427Y2 (en) | 1988-04-09 |
Family
ID=30134498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP285083U Granted JPS59112385U (en) | 1983-01-13 | 1983-01-13 | Magnetic disk rotation mounting stand |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59112385U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0610532Y2 (en) * | 1984-04-11 | 1994-03-16 | 富士写真フイルム株式会社 | Spindle for magnetic recording / playback device |
-
1983
- 1983-01-13 JP JP285083U patent/JPS59112385U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59112385U (en) | 1984-07-28 |
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