JPS62188001A - Rotary magnetic head recording device - Google Patents
Rotary magnetic head recording deviceInfo
- Publication number
- JPS62188001A JPS62188001A JP2801286A JP2801286A JPS62188001A JP S62188001 A JPS62188001 A JP S62188001A JP 2801286 A JP2801286 A JP 2801286A JP 2801286 A JP2801286 A JP 2801286A JP S62188001 A JPS62188001 A JP S62188001A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- rotary transformer
- stator
- outer core
- core
- 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.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 40
- 230000005294 ferromagnetic effect Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 9
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 239000003302 ferromagnetic material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000005405 multipole Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、回転ヘッドを使用して磁気記録再生を行なう
回転磁気ヘッド記録装置に関するもので。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotary magnetic head recording device that performs magnetic recording and reproduction using a rotary head.
特に映像、音響機器などに使用して有効なものである。It is particularly effective for use in video and audio equipment.
（従来の技術）
近年、回転磁気ヘッド記録装置の性能向、Ｊ−が重要視
されている。(Prior Art) In recent years, the performance improvement of a rotating magnetic head recording device, J-, has become important.
以下、図面を参照しながら、従来の回１ｉａ 磁気ヘッ
ド記録装置の一例について説明する。An example of a conventional magnetic head recording device will be described below with reference to the drawings.
第２図は、従来の回転磁気ヘッド記録装置の構成断面図
を示すもので、第２図に才？いて、１ａは端面を複数極
に着磁されたマグネツｊ−で、強磁性体で作られたマグ
ネッ１−ケース１ｂと接着固定され、モータロータ１を
構成する。２ａは、マグネット１８あｈ磁面に対向して
形成された複数個のコイルで、強磁性体で作られたステ
ータ板２ｂＪ：に接着固定され、モータステータ２を構
成する。モータステータ２は下シリンダ４の内側端面に
固定される。モータロータ１とモータステータ２とでモ
ータを構成する。３は、筒型周対向型のロータリトラン
ス対で、内周面に複数のコイル溝を切って、おのおのに
コイルを埋め込んだ外側コア３ａと、外周面に複数のコ
イル溝を切って、おのおのにコイルを埋、 め込んだ内
側コア３ｂより構成される。内側コア３ｂは、下シリン
ダ４の内側端面に固定される。外側コア３ａはその外周
面をモータロータ１と固定される。モータロータ１は、
下シリンダ４に組み込んだ軸受５に支持されたシャフト
６とディスク７を介して固定され、自由回転する。８は
上シリンダで、端面の外周に近い部分に磁気ヘッド９を
固定し、ディスクに固定され、シャフト６や外側コア３
ａと共に回転する。FIG. 2 shows a cross-sectional view of the structure of a conventional rotary magnetic head recording device. 1a is a magnet whose end face is magnetized with a plurality of poles, which is made of a ferromagnetic material and is adhesively fixed to a case 1b to form a motor rotor 1. A plurality of coils 2a are formed to face the magnetic surface of the magnet 18ah, and are adhesively fixed to a stator plate 2bJ: made of ferromagnetic material, thereby forming the motor stator 2. The motor stator 2 is fixed to the inner end surface of the lower cylinder 4. A motor is composed of a motor rotor 1 and a motor stator 2. 3 is a pair of cylindrical circumferentially opposed rotary transformers, including an outer core 3a with a plurality of coil grooves cut on the inner circumferential surface and a coil embedded in each, and an outer core 3a with a plurality of coil grooves cut on the outer circumferential surface, each with a coil embedded therein. It consists of an inner core 3b in which a coil is embedded. The inner core 3b is fixed to the inner end surface of the lower cylinder 4. The outer peripheral surface of the outer core 3a is fixed to the motor rotor 1. The motor rotor 1 is
It is fixed via a shaft 6 and a disk 7 supported by a bearing 5 built into the lower cylinder 4, and rotates freely. 8 is an upper cylinder, a magnetic head 9 is fixed to a portion near the outer periphery of the end face, and is fixed to the disk, and is connected to the shaft 6 and the outer core 3.
rotates with a.
以上のように構成された従来の回転磁気ヘッド記録装置
について、以下その動作について説明する。The operation of the conventional rotary magnetic head recording device configured as described above will be described below.
まず、モータにより、モータロータ１、ロータＩＪ ｌ
−ランス対３の外側コア３ａが回転する。上シリンダ８
−にに設置された磁気ヘッド９が磁気テープ（図略）」
―の磁気情報を検出し、ロータリ１−ランス対３の外側
コア３ａに信号を送る。この信号はロータリトランス対
３で電磁変換され、外側コア３ａ、内側コア３ｂ間で磁
気伝達され、内側コア３ｂで再度電磁変換されて、電気
信号としてロータリトランス対３の内側コア３ｂより出
力される。First, the motor rotor 1, rotor IJ l
- the outer core 3a of the lance pair 3 rotates; Upper cylinder 8
- The magnetic head 9 installed on the magnetic tape (not shown)
- detects the magnetic information of - and sends a signal to the outer core 3a of the rotary 1-lance pair 3. This signal is electromagnetically converted by the rotary transformer pair 3, magnetically transmitted between the outer core 3a and inner core 3b, electromagnetically converted again by the inner core 3b, and outputted from the inner core 3b of the rotary transformer pair 3 as an electrical signal. .
（発明が解決しようとする問題点）
しかしながら−ｔｚ記のような構成では、回転する外側
コア３ａの下端面が、ステータ１２ｂより上部にあり、
又その上端面もロータと近接しているため、モータで発
生する交番磁界の漏洩磁束１０が、ロータリトランス対
３の外側コア３ａと内側コア３ｂの間に漏れ込む、ロー
タリトランス対３のコイル溝のピッチは、チャンネル間
漏洩の制約があり、小さくすることが出来ない。そのた
め、外側コア３ａの最上部と最下部コイル溝３ｅ、 ３
ｄと端面までの長さは大きくとれず、最上部と最下部の
コイル溝３ｃ。(Problems to be Solved by the Invention) However, in the configuration as described in -tz, the lower end surface of the rotating outer core 3a is located above the stator 12b,
In addition, since its upper end surface is also close to the rotor, leakage magnetic flux 10 of the alternating magnetic field generated by the motor leaks between the outer core 3a and inner core 3b of the rotary transformer pair 3. The pitch cannot be made smaller due to the restriction of inter-channel leakage. Therefore, the uppermost and lowermost coil grooves 3e, 3 of the outer core 3a
The length between d and the end face cannot be made large, and the coil grooves 3c at the top and bottom.
３ｄでの磁気伝達にモータの漏れ磁束が入り、雑音が増
え、Ｓ／Ｎが悪くなるという欠点を有していた。The problem is that leakage magnetic flux from the motor enters the magnetic transmission at 3D, increasing noise and worsening the S/N ratio.
本発明は」二記問題点に鑑み、モータからロータリトラ
ンス対３に漏れ込む漏洩磁束１０を少なくシ。In view of the above problems, the present invention aims to reduce the leakage magnetic flux 10 leaking from the motor to the rotary transformer pair 3.
ロータリトランス対３での磁気伝達の外部雑音を減らし
、Ｓ／Ｎを向上するようにした回転磁気ヘッド記録装置
を提供するものである。A rotary magnetic head recording device is provided in which external noise in magnetic transmission in a pair of rotary transformers 3 is reduced and S/N is improved.
（問題点を解決するための手段）
」−記問題点を解決するために本発明の回転磁気ヘッド
記録装置は、最上部と最下部のコイル溝とそれぞれの端
面までの長さを、ロータリトランス対のコイル溝ピッチ
に対し、十分長く設定し、かつモータステータのステー
タ板をロータリ１−ランス外側コアの下端面より上部に
設定し、モータロータのマグネッｈケースを外側コアの
上端面より下部に設定するという構成を備えたものであ
る。(Means for Solving the Problems) In order to solve the problems described above, the rotary magnetic head recording device of the present invention has a rotary transformer that extends the lengths of the uppermost and lowermost coil grooves and their respective end faces. The pitch of the coil grooves of the pair is set to be sufficiently long, and the stator plate of the motor stator is set above the bottom end surface of the rotary 1-lance outer core, and the magnetic case of the motor rotor is set below the top end surface of the outer core. It is equipped with a configuration to do this.
（作 用）
本発明は上記した構成によって、ロータリトランス対の
外側コアが、モータとロータリ；−ランス対の磁気伝達
部の間のシールド材となり、モータで発生される交番磁
界が、ロータリトランス対に入らず、雑音を減らし、Ｓ
／Ｎが向」−できる。(Function) With the above-described configuration, the outer core of the rotary transformer pair serves as a shielding material between the motor and the magnetic transmission part of the rotary lance pair, and the alternating magnetic field generated by the motor is transmitted between the rotary transformer pair and the rotary transformer pair. does not enter the room, reduces noise, and
/N is facing” - can be done.
（実施例）
以下、本発明の実施例の回転磁気ヘッド記録装置につい
て、図面を参照しながら説明する。第１図は本発明の実
施例の回転磁気ヘッド記録装置の構成断面図を示すもの
である。第１図において。(Example) Hereinafter, a rotating magnetic head recording device according to an example of the present invention will be described with reference to the drawings. FIG. 1 shows a sectional view of the structure of a rotating magnetic head recording device according to an embodiment of the present invention. In FIG.
３はロータリ１−ランス対で、外側コア３ａと内側コア
３ｂにより構成されている。外側コア３ａはその最上部
と最下部コイル溝３ｃ、 ３ｄと、上下両端面までの長
さが、コイル溝ピッチに比して十分長く設定されている
。１はモータロータで、複数極着磁されたマグネット１
ａと、強磁性体製のマグネッ；−ケースｌｂより構成さ
れ、マグネッ、トケース１ｂが外側コア３ａの上部端面
より下部のぜ置に設定され、固定されている。２はモー
タステータで、複数個のコイル２ａと強磁性体のステー
タ板２ｂより構成され、ステータ板２ｂを、外側コア３
ａの下部端面より上部の位置になるよう、下シリンダ４
の内側端面に構成される。その他の構成は、従来例と同
様の構成である。Reference numeral 3 denotes a rotary lance pair, which is composed of an outer core 3a and an inner core 3b. The lengths of the outer core 3a from its top and bottom coil grooves 3c and 3d to both upper and lower end surfaces are set to be sufficiently longer than the coil groove pitch. 1 is a motor rotor, and a multi-pole magnetized magnet 1
A, a magnet made of a ferromagnetic material; and a case lb. The magnet and the case 1b are set and fixed at a position below the upper end surface of the outer core 3a. A motor stator 2 is composed of a plurality of coils 2a and a stator plate 2b made of ferromagnetic material, and the stator plate 2b is connected to an outer core 3.
Lower cylinder 4 so that it is above the lower end surface of a.
It is constructed on the inner end surface of. The other configurations are similar to those of the conventional example.
以上のように構成された回転磁気ヘッド記録装置につい
て、以下、第１図を用いてその動作を説明する。The operation of the rotating magnetic head recording device configured as described above will be described below with reference to FIG.
第１図において、モータを構成しているモータロータ１
とモータステータ２の間の磁束は一部、漏洩磁束１０の
ようにロータリトランス対３の外側コア３ａを流れる。In Fig. 1, a motor rotor 1 constituting a motor
A part of the magnetic flux between the motor stator 2 and the motor stator 2 flows through the outer core 3a of the rotary transformer pair 3 like the leakage magnetic flux 10.
しかし、この漏洩磁束ｌＯは、ロータリトランス対３の
外側と内側コア３ａ、３ｂ間の磁気伝達に影響を与えな
いため、雑音は少なく、Ｓ／Ｎも悪くならない。又、モ
ータを構成しているモータロータ１や、モータステータ
２と外側コア３ａの上下両端面と高さ的に離れており、
かつ、外側コア３ａの両端面と最上部°と最下部のコイ
ル溝３ｃ、 ３ｄまでの長さが、コイル溝ピッチに比し
て、大きいため、外側と内側コア３ａ、 ３ｂ間のギャ
ップにモータからの直接入り込む漏洩磁束による雑音は
少ない。However, this leakage magnetic flux lO does not affect the magnetic transmission between the outer and inner cores 3a and 3b of the rotary transformer pair 3, so there is little noise and the S/N does not deteriorate. In addition, it is spaced apart in height from both the upper and lower end surfaces of the motor rotor 1, the motor stator 2, and the outer core 3a that constitute the motor.
In addition, since the lengths from both end faces of the outer core 3a to the top and bottom coil grooves 3c and 3d are larger than the pitch of the coil grooves, the motor is inserted into the gap between the outer and inner cores 3a and 3b. There is little noise due to leakage magnetic flux that enters directly from the
以上のように、ロータリ１−ランス対３の外側コア３ａ
の最上部と最下部のコイル溝３ｃ、 ３ｄと、それぞれ
の上下両端面までの長さを、コイル溝ピッチに対し、十
分長く設定し、かつ、モータステータ２のステータ板２
ｂを外側コア下端面よリーヒ部に設定し、モータロータ
１のマグネットケース１ｂを外側コア３ａの上端面より
下部に設定することにより、外側コア３ａが、モータと
ロータリトランス対３間のシールドを行ない、モータの
交番磁界によるロータリトランス対３への雑音が減少で
きる。As described above, the outer core 3a of the rotary 1-lance pair 3
The lengths of the top and bottom coil grooves 3c and 3d and their respective upper and lower end surfaces are set to be sufficiently long with respect to the coil groove pitch, and the stator plate 2 of the motor stator 2 is
b is set at the lehi part from the lower end surface of the outer core, and the magnet case 1b of the motor rotor 1 is set lower than the upper end surface of the outer core 3a, so that the outer core 3a provides shielding between the motor and the rotary transformer pair 3. , noise to the rotary transformer pair 3 due to the alternating magnetic field of the motor can be reduced.
（発明の効果）
以上のように本発明によれば、モータの交番磁界による
雑音が少なく、Ｓ／Ｎが良いといったすぐれた効果を得
ることが出来る。(Effects of the Invention) As described above, according to the present invention, excellent effects such as less noise caused by the alternating magnetic field of the motor and a good S/N ratio can be obtained.
第１図は本発明の実施例の構成断面図、第２図は従来の
回転磁気ヘッド記録装置の構成断面図である。
１・・・モータロータ、 １ａ・・・マグネット、■ｂ
・・・マグネットケース、 ２・・・モータステータ
、 ２ａ・・・コイル、 ２ｂ・・・ステータ板。
３・・・ロータリトランス対、 ３ａ・・・外側コア、
３ｂ・・・内側コア、 ３ｃ・・・最上部コイル溝、３
ｄ・・・最下部コイル溝、 ４・・・下シリンダ、１０
・・・漏洩磁束。
特許出願人 松下電器産業株式会社
第１図
塁
１・・・モータロータ ４・・・ 壬！／ＩＪ＞
グ２・＝ ｔ−クスデータ ７・・・ デ゛４又
り２ｏ・・・ り４１し ８・・・ とシリ
ング２ｂ・・・ス了−ダＪ反 ９・・・ 免翫ヘ
ッド３・・・ リークソトク〉スダヤ １０・・・
１ｈ浅ち集水３ａ・・・ 外側１コγ
３ｂ・・・ 内槽・１コア
３ｃ・・・ １１１−仲っ４・し；芥
３ｄ・・・ 薬千仲つＡ、し藩FIG. 1 is a sectional view of the structure of an embodiment of the present invention, and FIG. 2 is a sectional view of the structure of a conventional rotary magnetic head recording device. 1...Motor rotor, 1a...Magnet, ■b
... Magnet case, 2... Motor stator, 2a... Coil, 2b... Stator plate. 3... Rotary transformer pair, 3a... Outer core,
3b...Inner core, 3c...Top coil groove, 3
d...Lowest coil groove, 4...Lower cylinder, 10
...Leakage magnetic flux. Patent applicant Matsushita Electric Industrial Co., Ltd. Figure 1 Base 1... Motor rotor 4... 壬! /IJ>
G2 = t-x data 7... 4-way diagonal 2o... 41 yen 8... and shilling 2b... swivel head 3...・Leak Sotoku> Sudaya 10...
1h Shallow water collection 3a... Outer 1 piece γ 3b... Inner tank, 1 core 3c... 111-Nakatsu 4, Shi; Akuta 3d... Yakusen Nakatsu A, Shihan
Claims (1)
形で成形されたマグネットケースによって構成されたモ
ータロータと、 前記モータロータと対向する複数個のコイルと、コイル
を支持固定する強磁性体のステータ板によって構成され
たモータステータと、 前記モータステータを保持する下シリンダと、前記モー
タロータと前記下シリンダに、ロータ側とステータ側が
各々保持される筒型周対向のロータリトランス対より成
り、 前記ロータリトランス対の外側コアをロータ側として、
前記モータロータに保持され、 前記ロータリトランス外側コアの最上部と最下部のコイ
ル溝と、それぞれの端面までの長さを、前記ロータリト
ランス対のコイル溝ピッチに対し、十分長く設定し、 かつ、前記モータステータのステータ板を前記ロータリ
トランス外側コアの下端面より上部に設定し、前記モー
タロータのマグネットケースを前記ロータリトランス外
側コアの上端面より下部に設定したこと を特徴とする回転磁気ヘッド記録装置。[Scope of Claims] A motor rotor constituted by a magnet magnetized to multiple poles and a magnetic case formed to enclose the magnet, a plurality of coils facing the motor rotor, and a ferromagnetic device that supports and fixes the coils. a motor stator constituted by a stator plate of a body, a lower cylinder holding the motor stator, and a pair of cylindrical circumferentially opposed rotary transformers whose rotor side and stator side are respectively held by the motor rotor and the lower cylinder, With the outer core of the rotary transformer pair as the rotor side,
The lengths of the uppermost and lowermost coil grooves of the rotary transformer outer core held by the motor rotor and the respective end faces are set to be sufficiently long with respect to the coil groove pitch of the rotary transformer pair, and A rotating magnetic head recording device characterized in that a stator plate of a motor stator is set above the lower end surface of the rotary transformer outer core, and a magnet case of the motor rotor is set lower than the upper end surface of the rotary transformer outer core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2801286A JPH0664683B2 (en) | 1986-02-13 | 1986-02-13 | Rotating magnetic head recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2801286A JPH0664683B2 (en) | 1986-02-13 | 1986-02-13 | Rotating magnetic head recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62188001A true JPS62188001A (en) | 1987-08-17 |
| JPH0664683B2 JPH0664683B2 (en) | 1994-08-22 |
Family
ID=12236863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2801286A Expired - Fee Related JPH0664683B2 (en) | 1986-02-13 | 1986-02-13 | Rotating magnetic head recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0664683B2 (en) |
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-
1986
- 1986-02-13 JP JP2801286A patent/JPH0664683B2/en not_active Expired - Fee Related
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|---|---|
| JPH0664683B2 (en) | 1994-08-22 |
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