JPS61294611A - Rotary head device - Google Patents

Rotary head device

Info

Publication number
JPS61294611A
JPS61294611A JP13459685A JP13459685A JPS61294611A JP S61294611 A JPS61294611 A JP S61294611A JP 13459685 A JP13459685 A JP 13459685A JP 13459685 A JP13459685 A JP 13459685A JP S61294611 A JPS61294611 A JP S61294611A
Authority
JP
Japan
Prior art keywords
amplifier
cylinder
rotary
rotating
rotary cylinder
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.)
Pending
Application number
JP13459685A
Other languages
Japanese (ja)
Inventor
Ichiro Kameyama
一郎 亀山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13459685A priority Critical patent/JPS61294611A/en
Publication of JPS61294611A publication Critical patent/JPS61294611A/en
Pending legal-status Critical Current

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  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To obtain stability against an external noise by providing an amplifier which amplifies a reproduction signal on the side of a rotary cylinder and generating electricity on the rotary cylinder for the amplifier by utilizing the rotation of the rotary cylinder. CONSTITUTION:An amplifier circuit 19 which amplifies the reproduction signal from a rotary magnetic head 4 is provided on a printed circuit board 2; and an annular magnet 18 which constitutes an electric generator is provided on the side of a fixed cylinder 9 and winding 17 for electric generation is provided on the side of the rotary cylinder 3. Consequently, the reproduction signal from the rotary magnetic head 4 is amplified by the amplifier 19 and then led to the signal processing circuit 25 of a fixed part through rotary transformer winding elements 15 and 17. Then, the amplifier 19 is powered on by the electric generator 24 consisting of the annular magnet 18 and winding 17 for electric generation through the rectifying circuit composed of, for example, a diode 22 and a capacitor 23 according to the rotation of the rotary cylinder 3. Therefore, the stability against an external noise is obtained and electric power need not be supplied from the fixed part to the side of the fixed cylinder 3.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、回転ヘッド型磁気録画再生装置（ＶＴＲ）等
に使用される回転ヘッド装置に関するものである。。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rotary head device used in a rotary head type magnetic recording/reproducing device (VTR) or the like. .

従来の技術 従来のＶＴＲの回転ヘッド装置の一例を第３図および第
４図に示す。第３図および第４図において、９は固定シ
リンダーであシ、この固定シリンダー９にはベアリング
１０を介して回転シャフト１を有する回転シリンダー３
が回転自在に支持されている。６はマグネット支持具６
を介して前記回転シリンダー３に固定された環状マグネ
ットであシ、７は前記環状マグネット６に対向して前記
固定シリンダー９に固定されたステータコイルであり、
この両者によりモーターが構成されている。2. Description of the Related Art An example of a conventional rotary head device for a VTR is shown in FIGS. 3 and 4. In FIGS. 3 and 4, 9 is a fixed cylinder, and this fixed cylinder 9 has a rotating cylinder 3 having a rotating shaft 1 via a bearing 10.
is rotatably supported. 6 is a magnet support 6
7 is a stator coil fixed to the fixed cylinder 9 opposite to the annular magnet 6;
A motor is made up of both.

４は回転へ、ラドシリンダー３に固定された回転磁気ヘ
ッドであり、リード線２１．中継プリント配線板２およ
びリード線２ｏを介してロータリートランスの回転側巻
線１６に接続されている。１４は前記ロータリートラン
スの固定側巻線である。4 is a rotating magnetic head fixed to the rotary cylinder 3, and a lead wire 21. It is connected to a rotating side winding 16 of a rotary transformer via a relay printed wiring board 2 and a lead wire 2o. 14 is a fixed side winding of the rotary transformer.

回転磁気ヘッドよりの再生信号は、第４図の電気的結線
図に示す様に、回転側および固定側の巻線１５．１４を
介して固定部の信号処理回路２６に導かれる様構成され
ている。As shown in the electrical connection diagram of FIG. 4, the reproduction signal from the rotating magnetic head is configured to be guided to the signal processing circuit 26 of the fixed part via the windings 15 and 14 on the rotating side and the fixed side. There is.

発明が解決しようとする問題点 しかし、上記構成では回転磁気へラド４で再生される信
号は微弱である為、固定部に設けられた信号処理回路２
５に導かれる前に外部から混入される雑音の影響を受は
易いものであった。Problems to be Solved by the Invention However, with the above configuration, the signal reproduced by the rotating magnetic heald 4 is weak, so the signal processing circuit 2 provided in the fixed part is
It was easy to be influenced by noise mixed in from the outside before being guided to the 5.

問題点を解決するための手段 上記問題点を解決するため本発明の回転へ・ラド装置は
、回転シリンダー側に再生信号を増幅する増幅器を設け
るとともに、その増幅器の駆動電源を前記回転シリンダ
ーの回転を利用して回転シリンダー上で発生せしめるも
のである。Means for Solving the Problems In order to solve the above problems, the rotating RAD device of the present invention is provided with an amplifier for amplifying the reproduced signal on the rotating cylinder side, and the power source for driving the amplifier is connected to the rotating cylinder. It is generated on a rotating cylinder using

作　　用 上記構成によれば、微弱な再生信号は一度増幅された後
にロータリートランスを介して固定部に送られるため、
外部からの雑音による影響は軽減されるものであり、ま
た、その増幅のための電源は回転シリンダー上で発生さ
れるため、固定部より回転部に電源を供給するという構
成も不要になるものである。Effect According to the above configuration, the weak reproduction signal is once amplified and then sent to the fixed part via the rotary transformer.
The influence of external noise is reduced, and since the power for amplification is generated on the rotating cylinder, there is no need for a configuration in which power is supplied from the fixed part to the rotating part. be.

実施例 第１図に本発明の回転ヘッド装置の一実施例の側断面図
を示し、第２図にその電気的結線図を示す。Embodiment FIG. 1 shows a side sectional view of an embodiment of the rotary head device of the present invention, and FIG. 2 shows its electrical connection diagram.

第１図および第２図において、第３図の従来例と同一構
成要素は同一符号を付しである。In FIGS. 1 and 2, the same components as those in the conventional example shown in FIG. 3 are given the same reference numerals.

従来例と異なる点は、回転磁気へ、ラド４からの再生信
号を増幅するための増幅回路１９を中継プリント配線板
２上に設けた点と、固定シリンダー〇側に発電機を構成
する環状マグネット１８を、そして回転シリンダー３側
に発電用巻線１７を設けた点にある。即ち、回転磁気へ
ラド４よシの再生信号は増幅器１９により増幅された後
にロータリートランス巻線１５．１４を介して固定部の
信号処理回路２５に導かれるものである。そして前記増
幅器１９の電源は回転シリンダー３の回転にともなって
環状マグネット１８と発電用巻線１７とによシ構成され
る発電機２４を電源とし°、例えばタイオード２２とコ
ンデンサ２３から成る整流回路を介して供給される。The difference from the conventional example is that an amplification circuit 19 is provided on the relay printed wiring board 2 to amplify the reproduction signal from the RAD 4 to the rotating magnet, and an annular magnet that constitutes a generator is placed on the fixed cylinder 〇 side. 18, and a power generation winding 17 is provided on the rotating cylinder 3 side. That is, the reproduced signal from the rotating magnetic heald 4 is amplified by the amplifier 19 and then guided to the signal processing circuit 25 in the fixed part via the rotary transformer windings 15 and 14. The amplifier 19 is powered by a generator 24 which is made up of an annular magnet 18 and a power generation winding 17 as the rotating cylinder 3 rotates, and a rectifier circuit made of, for example, a diode 22 and a capacitor 23. Supplied via

発明の効果 以上の様に本発明によれば、回転磁気ヘッドよシの再生
信号は回転側で一度増幅された後にロータリートランス
を介して固定側に導かれるため、外来よりの雑音に対し
て安定したものとなシ、また回転シリンダーの回転を利
用しての発電機により前記増幅のための電源を構成して
いるため、特に固定部より回転シリンダー側へ電源を供
給する必要のないものである。Effects of the Invention According to the present invention, the reproduced signal from the rotating magnetic head is once amplified on the rotating side and then guided to the stationary side via the rotary transformer, making it stable against external noise. In addition, since the power source for the amplification is constituted by a generator that utilizes the rotation of the rotating cylinder, there is no need to supply power from the fixed part to the rotating cylinder side. .

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の回転ヘッド装置の一実施例を示す側断
面図、第２図は同電気的結線図、第３図は従来の回転ヘ
ッド装置の側断面図、第４図は同電気的結線図である。 ３・・・・・・回転シリンダー、４・・・・・・回転磁
気ヘッド、７・・・・・・モーター巻線、９・・・・・
・固定シリンダー、１０・・・・・・ヘアリング、１４
・・・・・・ロータＩＪ−）ランス固定巻線、１５・・
・・・・ロータリートランス回転巻線、１了・・・・・
・発電巻線、１８・・・・・・環状マグネット、１９・
・・・・・増幅器。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 イｆ 第２図FIG. 1 is a side sectional view showing an embodiment of the rotating head device of the present invention, FIG. 2 is an electrical connection diagram of the same, FIG. 3 is a side sectional view of a conventional rotating head device, and FIG. 4 is an electrical connection diagram of the same. It is a wiring diagram. 3... Rotating cylinder, 4... Rotating magnetic head, 7... Motor winding, 9...
・Fixed cylinder, 10...Hair ring, 14
...Rotor IJ-) Lance fixed winding, 15...
...Rotary transformer rotating winding, 1 completion...
・Generating winding, 18...Annular magnet, 19・
·····amplifier. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure f Figure 2

Claims (1)

【特許請求の範囲】[Claims] 回転ヘッドシリンダーに設けられた回転磁気ヘッドより
の再生信号を増幅器を介してロータリートランスに導く
とともに、前記回転ヘッドシリンダーに設けられた発電
巻線に生じる電圧を前記増幅器の電源として供給するこ
とを特徴とする回転ヘッド装置。A reproduction signal from a rotating magnetic head provided on a rotating head cylinder is guided to a rotary transformer via an amplifier, and a voltage generated in a power generation winding provided on the rotating head cylinder is supplied as a power source for the amplifier. Rotating head device.
JP13459685A 1985-06-20 1985-06-20 Rotary head device Pending JPS61294611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13459685A JPS61294611A (en) 1985-06-20 1985-06-20 Rotary head device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13459685A JPS61294611A (en) 1985-06-20 1985-06-20 Rotary head device

Publications (1)

Publication Number Publication Date
JPS61294611A true JPS61294611A (en) 1986-12-25

Family

ID=15132083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13459685A Pending JPS61294611A (en) 1985-06-20 1985-06-20 Rotary head device

Country Status (1)

Country Link
JP (1) JPS61294611A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6486301A (en) * 1987-09-29 1989-03-31 Mitsumi Electric Co Ltd Drum device for magnetic recording/reproducing device
US5682283A (en) * 1993-08-19 1997-10-28 Kabushiki Kaisha Toshiba Rotary head apparatus having short distance between magnetic heads and rotary transformer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51138416A (en) * 1975-05-26 1976-11-30 Hitachi Ltd Magnetic recorder/reproducer
JPS5737705A (en) * 1980-08-19 1982-03-02 Hitachi Denshi Ltd Rotary magnetic head device
JPS58211306A (en) * 1982-06-03 1983-12-08 Sony Corp Rotary head type recording and reproducing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51138416A (en) * 1975-05-26 1976-11-30 Hitachi Ltd Magnetic recorder/reproducer
JPS5737705A (en) * 1980-08-19 1982-03-02 Hitachi Denshi Ltd Rotary magnetic head device
JPS58211306A (en) * 1982-06-03 1983-12-08 Sony Corp Rotary head type recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6486301A (en) * 1987-09-29 1989-03-31 Mitsumi Electric Co Ltd Drum device for magnetic recording/reproducing device
US5682283A (en) * 1993-08-19 1997-10-28 Kabushiki Kaisha Toshiba Rotary head apparatus having short distance between magnetic heads and rotary transformer

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