JPH0398711U

JPH0398711U -

Info

Publication number: JPH0398711U
Application number: JP802590U
Authority: JP
Priority date: 1990-01-29
Filing date: 1990-01-29
Publication date: 1991-10-15

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例による流体軸受式
回転磁気ヘツド装置の平面図を、第２図は第１図
の正面図の半断面図を示す。第３図は傾斜させて
設けられている本考案の一実施例による流体軸受
式回転磁気ヘツド装置の平面図を、第４図は第３
図の正面図の半断面図を示す。第５図はテープ圧
を考慮した本考案の他の実施例の平面図を、第６
図はその正面図を示す。第７図は従来の流体軸受
式回転磁気ヘツドの平面図を、第８図は第７図の
正面図の半断面図を示す。第９図は傾斜させて設
けられている従来の流体軸受式回転磁気ヘツドの
平面図を、第１０図は第９図の正面図の半断面図
を示す。図に於て、１……固定側シリンダ、２……中心
軸、３……固定側ロータリトランス、４……ラジ
アル軸受、５……回転側ロータリトランス、６…
…モータ、７……回転側シリンダ、８……スラス
ト軸受、９……ヘツド駆動装置、１０……磁気ヘ
ツド、１１……スリツプリング、１２……ホルダ
ーリング、１３……給電ブラシ、１４……ホルダ
ーブラシ、１５……軸受グリスである。なお、図
中同一符号は同一または相当部分を示す。 FIG. 1 is a plan view of a fluid bearing type rotary magnetic head device according to an embodiment of the invention, and FIG. 2 is a half sectional view of the front view of FIG. 1. FIG. 3 is a plan view of a fluid bearing type rotary magnetic head device according to an embodiment of the present invention, which is installed at an angle, and FIG.
FIG. 3 shows a half-sectional view of the front view of the figure. FIG. 5 is a plan view of another embodiment of the present invention that takes tape pressure into consideration;
The figure shows its front view. FIG. 7 is a plan view of a conventional hydrodynamic bearing type rotary magnetic head, and FIG. 8 is a half sectional view of the front view of FIG. 7. FIG. 9 is a plan view of a conventional hydrodynamic bearing type rotary magnetic head that is installed at an angle, and FIG. 10 is a half sectional view of the front view of FIG. 9. In the figure, 1... Fixed side cylinder, 2... Central shaft, 3... Fixed side rotary transformer, 4... Radial bearing, 5... Rotating side rotary transformer, 6...
... Motor, 7 ... Rotating cylinder, 8 ... Thrust bearing, 9 ... Head drive device, 10 ... Magnetic head, 11 ... Slip ring, 12 ... Holder ring, 13 ... Power supply brush, 14 ... Holder brush, 15... Bearing grease. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of Claim for Utility Model Registration] (1) Necessary for a rotating magnetic head device using a fluid bearing in the bearing part, in which an amplifier is mounted on the head drive device or rotating cylinder to realize noiseless search. A rotating magnetic head device equipped with a power supply brush, characterized in that the power supply brush is arranged so that the resultant force of the contact pressure of the power supply brush is balanced with respect to the center of the fluid bearing, and eccentric force is not generated. Fluid bearing type rotating magnetic head device. (2) A rotating magnetic head device that uses a fluid bearing in the bearing section, and is equipped with a power supply brush that is necessary when the head drive device and amplifier are mounted on the rotating cylinder to achieve noiseless search. In the magnetic head device, the power supply brush for supplying power to the head drive device and amplifier is installed in the direction opposite to the direction of the combined force of all external forces applied as eccentric force to the rotating magnetic head device. A hydrodynamic bearing type rotating magnetic head device.