JPS63122901U

JPS63122901U -

Info

Publication number: JPS63122901U
Application number: JP1478587U
Authority: JP
Priority date: 1987-02-03
Filing date: 1987-02-03
Publication date: 1988-08-10

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による回転ヘツド
アセンブリの縦断面図、第２図はこの考案の他の
実施例による回転ヘツドアセンブリの縦断面図、
第３図は第１図の実施例におけるロータリトラン
スの縦断面図であつてその主磁路の向きを示す図
、第４図は第１図の実施例におけるモータの平面
図であつてその主磁路の向きを示す図、第５図は
従来の回転ヘツドアセンブリの縦断面図である。図において、１は固定シリンダ、２は磁気テー
プ、４は回転シリンダ、７は磁気ヘツド、８はロ
ータリトランス、８０１は固定側ロータリトラン
ス、８０２Ａは回転側ロータリトランス、８０４
は回転側ロータリトランス８０２Ａのコア、８０
６は回転側ロータリトランス８０２Ａのコイル、
９はモータ、９０１はその固定子、９０２Ａは回
転子、９０５はロータヨーク、９０６はロータ素
子（コイル、永久磁石）、１０は磁性部材、８０
４Ａは磁性部材１０の第一の部分、９０５Ａは磁
性部材１０の第二の部分である。なお、各図中同
一符号はそれぞれ同一部または相当部を示す。 FIG. 1 is a longitudinal cross-sectional view of a rotary head assembly according to one embodiment of the invention, and FIG. 2 is a longitudinal cross-sectional view of a rotary head assembly according to another embodiment of the invention.
3 is a longitudinal sectional view of the rotary transformer in the embodiment shown in FIG. 1, showing the direction of its main magnetic path, and FIG. 4 is a plan view of the motor in the embodiment shown in FIG. FIG. 5, which shows the direction of the magnetic path, is a longitudinal sectional view of a conventional rotary head assembly. In the figure, 1 is a fixed cylinder, 2 is a magnetic tape, 4 is a rotating cylinder, 7 is a magnetic head, 8 is a rotary transformer, 801 is a fixed side rotary transformer, 802A is a rotating side rotary transformer, 804
is the core of the rotating side rotary transformer 802A, 80
6 is the coil of the rotating side rotary transformer 802A,
9 is a motor, 901 is its stator, 902A is a rotor, 905 is a rotor yoke, 906 is a rotor element (coil, permanent magnet), 10 is a magnetic member, 80
4A is a first portion of the magnetic member 10, and 905A is a second portion of the magnetic member 10. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A rotary cylinder carrying a magnetic head for recording and reproducing information on a magnetic tape, a fixed cylinder that rotatably supports the rotary cylinder, a rotary transformer that transmits and receives recording and reproducing signals between the rotary cylinder and the fixed cylinder, and the rotary cylinder. The rotary transformer includes a rotary transformer on the rotary side, which includes a core attached to a rotating cylinder and a coil provided on the core, and a rotary transformer on the fixed side, attached to a fixed cylinder. In a rotary head assembly of a magnetic recording/reproducing device, the rotating head assembly of a magnetic recording/reproducing device includes a rotor consisting of a rotor yoke attached to a rotating cylinder and a rotor element provided on the rotor yoke, and a stator attached to a fixed cylinder. The rotor yoke of the motor is integrally formed with a cylindrical or flat donut-shaped magnetic member, and a coil of a rotary transformer on the rotating side is provided in a first circumferential portion of the magnetic member, and the coil is opposed to the coil. A fixed rotary transformer is disposed, a rotor element of the motor is provided in a second circumferential portion of the magnetic member adjacent to the first portion, and the stator is disposed opposite to the rotor element. A rotary head assembly for a magnetic recording/reproducing device, characterized in that: