JPS5942627A - Rotary cylinder - Google Patents

Rotary cylinder

Info

Publication number
JPS5942627A
JPS5942627A JP57152155A JP15215582A JPS5942627A JP S5942627 A JPS5942627 A JP S5942627A JP 57152155 A JP57152155 A JP 57152155A JP 15215582 A JP15215582 A JP 15215582A JP S5942627 A JPS5942627 A JP S5942627A
Authority
JP
Japan
Prior art keywords
fixed
shaft
transformer element
drum
bearings
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
JP57152155A
Other languages
Japanese (ja)
Inventor
Hiroshi Inoue
洋 井上
Tadao Shioyama
塩山 忠夫
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 JP57152155A priority Critical patent/JPS5942627A/en
Publication of JPS5942627A publication Critical patent/JPS5942627A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53Disposition or mounting of heads on rotating support

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To make a titled rotary cylinder small in size and thin even when a circumference opposed type rotary transformer unit is adopted, by placing a rotary transformer unit in a space between bearings. CONSTITUTION:A disk 31 and a shaft 32 are fixed so as to be rotatable as one body, a ball bearing 37 is inserted into said shaft 32 in the lower end part of the disk 31, and a rotation side transformer element 34 is stuck and fixed to said shaft 32 in the lower end part of the ball bearing 37. On the other hand, a fixing side transformer element 35 is stuck and fixed to the inside circumferential part of a lower cylinder 33 for constituting a fixing side drum, and a ball bearing 38 is installed to the inside circumferential part of said lower cylinder 33, in the lower end part of the fixing side transformer element 35. In this way, a position of a pair of ball bearings 37, 38 is controlled by dimensions in the axial direction of the fixing side transformer element 35, and the inter-bearing distance is maintained. Also, a rotary transformer unit consisting of the elements 34, 35 has a circumference opposed structure.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はビデオチーブレコーダに使用する映像信号記録
または再生用の回転シリンダー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 cylinder for recording or reproducing video signals used in a video recorder.

従来例の構成とその問題点 第1図に従来の回転シリンダーの側断面図を示す。同図
において、ディスク11とシャフト12は固着しておシ
、回転側トランス要素14は前記ディスク11.の下端
面に芯出し接着されている。
Structure of a conventional example and its problems FIG. 1 shows a side sectional view of a conventional rotary cylinder. In the figure, the disk 11 and the shaft 12 are fixed together, and the rotating side transformer element 14 is attached to the disk 11. It is centered and glued to the lower end surface of.

一方、下シリンダ−13の底面には固定側トランス要素
16がビス16によって固定され、また、上端内周部に
は玉軸受17が、そして下端内周部には玉軸受18がそ
れぞれ装着されている。前記13.15,16,17.
18よりなる下シリンダ−ユニットは、前記11912
.14よりなるディスクユニットが装着されており、予
圧ホルダー19.ウェーブワッシャー20.ボス21.
セットビス22とから成る予圧手段で予圧がかけられて
いる。また、上シリンダ−10はディスク11と嵌合し
、ビス23によって芯出し固定されている。
On the other hand, a fixed transformer element 16 is fixed to the bottom surface of the lower cylinder 13 with screws 16, and a ball bearing 17 is mounted on the inner circumference of the upper end, and a ball bearing 18 is mounted on the inner circumference of the lower end. There is. 13.15, 16, 17 above.
The lower cylinder unit consisting of 18 is the above-mentioned 11912
.. A disk unit consisting of 14 is attached, and a preload holder 19. Wave washer 20. Boss 21.
Preload is applied by a preload means consisting of a set screw 22. Further, the upper cylinder 10 is fitted with the disk 11 and fixed with centering screws 23.

前記構造より、前記14.16よりなるロータリートラ
ンスユニットは平面的同構造となる。
Due to the above structure, the rotary transformer unit consisting of the above 14.16 has the same planar structure.

しかしながら、ビデオテープレコーダ(以下、VTRと
略称する)の小型化という傾向から回転シリンダーの小
型化が要求され、寸た、VTRの高画質1回転シリンダ
ーのマルチヘッドという傾向からクロストークを抑える
という観点より、ロータリートランスユニットの平面対
向構造では限界があった。
However, due to the trend of downsizing of video tape recorders (hereinafter abbreviated as VTR), there is a demand for downsizing of rotating cylinders, and from the perspective of suppressing crosstalk due to the trend of VTRs having multiple heads of high-quality single-turn cylinders. Therefore, there are limits to the planar structure of the rotary transformer unit.

発明の目的 本発明は周対向型のロータリートランスユニットを採用
しながらも小型・薄型化を可能にした回転シリンダーを
提供せんとするものである。
OBJECTS OF THE INVENTION The present invention aims to provide a rotary cylinder that can be made smaller and thinner while employing a circumferentially opposed rotary transformer unit.

発明の構成 本発明は、磁気ヘッドを有する回転側ドラムと、その回
転側ドラムとで磁気テープの走行を案内する固定側ドラ
ムと、前記回転側ドラムに固着したシャフトと、前記シ
ャフトを回転自在に支承すべく前記固定側ドラムの内周
部に上下の関係をもって装着された一対の軸受と、前記
一対の軸受の軸受間に配置され、かつ前記磁気ヘッドか
らの18号を授受すべく前記固定側ドラムに固着された
回定側トランス要素および前記シャフトと一体的に回転
する回転側トランス要素から成る周対向型のロータリー
トランスユニットを具備してなる構造を有する。
Structure of the Invention The present invention provides a rotary drum having a magnetic head, a fixed drum that guides the running of a magnetic tape using the rotary drum, a shaft fixed to the rotary drum, and a shaft that is rotatable. a pair of bearings mounted in a vertical relationship on the inner circumferential portion of the fixed side drum for support; and a pair of bearings disposed between the pair of bearings, and the fixed side for receiving and transmitting No. 18 from the magnetic head. It has a structure including a circumferentially opposed type rotary transformer unit consisting of a rotation-side transformer element fixed to a drum and a rotation-side transformer element that rotates integrally with the shaft.

実施例の説明 以下、本発明を第2図に示した実施例に基いて説明する
DESCRIPTION OF EMBODIMENTS The present invention will be explained below based on the embodiment shown in FIG.

第2図は本発明の実施例の側断面図を示している。同図
において、ディスク31とシャフト32は一体的に回転
しつるように固着されており、前記ディスク31の下端
部には玉軸受37が前記シャフト32に挿入されており
、また、前記玉軸受37の下端部には回転側トランス要
素34が前記シャフト32に接着固定されている。
FIG. 2 shows a side sectional view of an embodiment of the invention. In the figure, a disk 31 and a shaft 32 are fixed to rotate integrally and hang together, and a ball bearing 37 is inserted into the shaft 32 at the lower end of the disk 31. A rotating transformer element 34 is adhesively fixed to the shaft 32 at the lower end thereof.

一方、固定側ドラムを構成する下シリング−33の内周
部には固定側トランス要素36が接着固定されており、
前記固定側トランス要素35の下端部には、玉軸受38
が前記下シリンダ−33の内周部に装着されている。
On the other hand, a fixed side transformer element 36 is adhesively fixed to the inner peripheral part of the lower sill 33 constituting the fixed side drum.
A ball bearing 38 is provided at the lower end of the fixed transformer element 35.
is attached to the inner peripheral portion of the lower cylinder 33.

前記33136,38よシなる下シリンダ−ユニットに
は前記31,32.34.37よりなるディスクユニッ
トが挿入されており、予圧ホルダー39.ウェーブワッ
シャー40.ボス41.セットビス42から成る予圧手
段で予圧がかけられている。
A disk unit consisting of the aforementioned 31, 32, 34, 37 is inserted into the lower cylinder unit consisting of the aforementioned 33136, 38, and a preload holder 39. Wave washer 40. Boss 41. Preload is applied by a preload means consisting of a set screw 42.

また、回転側ドラムを構成する上シリンダ−30は前記
ディスク31と嵌合し、ビス43によって芯出し固定さ
れている。前記構造により、前記固定側トランス要素3
6の軸方向の寸法で前記一対の玉軸受37.38の位置
が規制され、軸受間距離が維持される。また、前記34
.36からなるロータリートランスユニットは周対向構
造となっている。
Further, the upper cylinder 30 constituting the rotating drum is fitted with the disk 31 and fixed with centering screws 43. Due to the structure, the fixed side transformer element 3
The positions of the pair of ball bearings 37 and 38 are regulated by the axial dimension of 6, and the distance between the bearings is maintained. In addition, the above 34
.. The rotary transformer unit consisting of 36 has a circumferentially opposed structure.

発明の効果 本発明は前記のような構成であり、本発明によれば、以
下に示す効果が得られるものである。
Effects of the Invention The present invention has the above configuration, and according to the present invention, the following effects can be obtained.

(1)従来の軸受間のスペースにローフIJ −t−ラ
ンスユニットを配置することによってスペースをより有
効に利用でき、回転シリンダーの軸方向の寸法を小型化
できる。
(1) By arranging the loaf IJ-t-lance unit in the space between the conventional bearings, the space can be used more effectively and the axial dimension of the rotating cylinder can be reduced.

(2)前記(1)において、同時に固定側トランス要素
の軸方向の寸法によって、一対の軸受を位置規制するこ
とができる。
(2) In (1) above, at the same time, the position of the pair of bearings can be regulated by the axial dimension of the stationary transformer element.

(3)前記(2)よシ下シリンダーの内径をストレート
に加工できる。
(3) Beyond (2) above, the inner diameter of the lower cylinder can be machined straight.

(イ) ロータリートランスユニットが周対向構造とな
るので平面対向構造と比較してクロストークを抑えるこ
とができる。
(a) Since the rotary transformer unit has a circumferentially opposed structure, crosstalk can be suppressed compared to a planarly opposed structure.

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

第1図は従来例の側断面図、第2図は本発明の一実施例
の側断面図である。 30・・・・・・上シリンダ−,31・・・・・・ディ
スク、32・・・・・・シャフト、33・・・・・・下
シリンダ−,34・・・・・・回転側トランス要素、3
6・・・・・・固定側トランス要素、37.38・・・
・・・玉軸受、39・・・・・・予圧ホルダー、40・
・・・・・ウェーブワッシャー、41・・・・・・予圧
ボス、42・・・・・・セットビス、43・・・・・・
ビス。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図 第2図
FIG. 1 is a side sectional view of a conventional example, and FIG. 2 is a side sectional view of an embodiment of the present invention. 30...Upper cylinder, 31...Disc, 32...Shaft, 33...Lower cylinder, 34...Rotating side transformer element, 3
6...Fixed side transformer element, 37.38...
... Ball bearing, 39 ... Preload holder, 40.
... Wave washer, 41 ... Preload boss, 42 ... Set screw, 43 ...
Screw. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (2)

【特許請求の範囲】[Claims] (1)@気ヘッドを有する回転側ドラムと、その回転側
ドラムとで磁気テープの走行を案内する固定側ドラムと
、前記回転側ドラムに固着したシャフトと、前記シャフ
トを回転自在に支承すべく前記固定側ドラムの内周部に
上下の関係をもって装着された一対の軸受と、前記一対
の軸受の軸受間に配置され、かつ前記磁気ヘッドからの
信号を授受すべく前記固定側ドラムに固着された固定側
トランス要素および前記シャフトと一体的に回転する回
転側トランス要素から成る周対向型のロータリートラン
スユニットを具備してなることを特徴とする回転シリン
ダー。
(1) A rotating drum having a magnetic head, a fixed drum that guides the running of the magnetic tape with the rotating drum, a shaft fixed to the rotating drum, and a shaft that rotatably supports the shaft. a pair of bearings mounted in a vertical relationship on the inner periphery of the stationary drum; and a bearing disposed between the pair of bearings and fixed to the stationary drum for transmitting and receiving signals from the magnetic head. A rotary cylinder comprising a circumferentially opposed rotary transformer unit comprising a fixed transformer element and a rotating transformer element that rotates integrally with the shaft.
(2)固定側トランス要素の両端部にて一対の軸受の軸
方向位置を規制するようにしたことを特徴とする特許請
求の範囲第1項記載の回転シリンダー〇
(2) The rotating cylinder according to claim 1, wherein the axial position of the pair of bearings is regulated at both ends of the fixed transformer element.
JP57152155A 1982-08-31 1982-08-31 Rotary cylinder Pending JPS5942627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57152155A JPS5942627A (en) 1982-08-31 1982-08-31 Rotary cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57152155A JPS5942627A (en) 1982-08-31 1982-08-31 Rotary cylinder

Publications (1)

Publication Number Publication Date
JPS5942627A true JPS5942627A (en) 1984-03-09

Family

ID=15534221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57152155A Pending JPS5942627A (en) 1982-08-31 1982-08-31 Rotary cylinder

Country Status (1)

Country Link
JP (1) JPS5942627A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6334288U (en) * 1986-08-22 1988-03-05
EP0336422A2 (en) * 1988-04-08 1989-10-11 Sharp Kabushiki Kaisha Magnetic head carrier drum assembly
EP0393706A2 (en) * 1989-04-21 1990-10-24 Sony Corporation Rotary head drum for a video tape recorder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6334288U (en) * 1986-08-22 1988-03-05
EP0336422A2 (en) * 1988-04-08 1989-10-11 Sharp Kabushiki Kaisha Magnetic head carrier drum assembly
EP0393706A2 (en) * 1989-04-21 1990-10-24 Sony Corporation Rotary head drum for a video tape recorder

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