JPH01181114U

JPH01181114U -

Info

Publication number: JPH01181114U
Application number: JP1162288U
Authority: JP
Priority date: 1988-01-30
Filing date: 1988-01-30
Publication date: 1989-12-27

Description

[Brief explanation of drawings]

第１図は本案の一実施例を示す縦断側面図、第
２図は第１図に使用のベアリングの縦断側面図で
ある。第３図は従来例の縦断側面図、第２図は第
３図に使用のベアリングの縦断側面図である。１４…回転中心軸、１５…内輪、４６…外輪、
１７…ボール、１０…固定ドラム、２７…磁気ヘ
ツド、１２…回転ヘツド、３２…ロータリートラ
ンスロータ、３３…ロータリートランスステータ
、３４，３５，３６，３７…コイル、２３…モー
タロータ、２４…モータステータ、４８…延出部
、１８…内側ハウジング。 FIG. 1 is a longitudinal sectional side view showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional side view of the bearing used in FIG. 1. FIG. 3 is a vertical side view of the conventional example, and FIG. 2 is a vertical side view of the bearing used in FIG. 14...Rotation center axis, 15...Inner ring, 46...Outer ring,
17... Ball, 10... Fixed drum, 27... Magnetic head, 12... Rotating head, 32... Rotary transformer rotor, 33... Rotary transformer stator, 34, 35, 36, 37... Coil, 23... Motor rotor, 24... Motor stator, 48... Extension portion, 18... Inner housing.

補正平１．７．２９図面の簡単な説明を次のように補正する。明細書第１２頁第１８行の「第２図」を「第４
図」と訂正する。Amendment 1.7.29 The brief description of the drawing is amended as follows. “Figure 2” on page 12, line 18 of the specification has been replaced with “Figure 4.”
"Fig." is corrected.

Claims

[Claims for Utility Model Registration] (1) A rotational center shaft, an inner ring fixed to the rotational center shaft, an outer ring fixed to a fixed drum arranged concentrically with the rotational center shaft, and a space between the inner ring and the outer ring. a rotating drum having a bearing in which a rotating ball is disposed, a magnetic head that rotates integrally with the central axis of rotation and rotates with its tip slightly protruding above the outer peripheral surface of the fixed drum; a rotary transformer rotor having a predetermined number of concentric coils disposed concentrically with the rotation center axis; and a predetermined number of coils disposed concentrically facing the coils of the rotary transformer rotor. a rotary transformer stator fixed together with the drum; a motor rotor that is arranged concentrically with the rotational center axis and rotates together with the rotational center axis and applies rotational force to the rotational center axis; and a motor rotor that is arranged concentrically with the motor rotor and together with the fixed drum. In a rotating magnetic head dom assembly comprising a fixed motor stator, an extension is provided at one end of the outer ring of the bearing and extends concentrically with the rotation center axis so that the outer surface thereof is inside the outer surface of the outer ring of the bearing. A rotary magnetic head drum assembly comprising: a rotating magnetic head drum assembly, wherein an inner housing portion of the stationary drum is fixed to an outer periphery of the extending portion; (2) The bearings are arranged as a pair on the rotational center axis at a predetermined distance apart, and the extending portions provided on the outer rings of the pair of bearings extend in directions facing each other, and the extending portions are extended in directions facing each other. The rotating magnetic head drum assembly according to claim 1, wherein the inner housing portion of the fixed drum is fixed between the extending portions. (3) The rotating magnetic head drum assembly according to claim 1 or 2, wherein the outer surface of the inner housing portion of the fixed drum is substantially the same as the outer surface of the bearing outer ring. (4) The rotating magnetic head drum assembly according to claim (1), wherein the rotary transformer rotor and the rotary transformer stator are arranged outside an inner housing portion of the fixed drum.