JPH0255424U

JPH0255424U -

Info

Publication number: JPH0255424U
Application number: JP13319388U
Authority: JP
Priority date: 1988-10-11
Filing date: 1988-10-11
Publication date: 1990-04-20

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る回転ヘツド装
置を含むテープ走行系の一部を示す正面図、第２
図は本実施例に係る回転ヘツド装置を示す斜視図
、第３図は本実施例におけるリードならびにテー
パ面の位置および構造と、ガイドローラの位置お
よび構造の関係を説明するための拡大正面図、第
４図は本実施例におけるテーパ面の動作を説明す
るための図、第５図は従来の回転ヘツド装置を含
むテープ走行系の一部を示す正面図、第６図は従
来の回転ヘツド装置におけるリードの位置および
構造とガイドローラの位置および構造の関係を説
明するための拡大正面図、第７図は従来の回転ヘ
ツド装置のドラムに巻き付けられた磁気テープが
リードからはずれた状態を示す説明図である。１……回転ドラム、２……回転軸、３……磁気
ヘツド、７……磁気テープ、８……ガイドローラ
、８ａ……上フランジ、８ｂ……下フランジ、８
ｃ……ガイド部、９……ガイドローラ、２１……
固定ドラム、２２ａ……リード、２２ｂ……テー
パ面。 FIG. 1 is a front view showing a part of a tape running system including a rotary head device according to an embodiment of the present invention;
The figure is a perspective view showing the rotary head device according to this embodiment, and FIG. 3 is an enlarged front view for explaining the relationship between the position and structure of the lead and tapered surface and the position and structure of the guide roller in this embodiment. FIG. 4 is a diagram for explaining the operation of the tapered surface in this embodiment, FIG. 5 is a front view showing a part of a tape running system including a conventional rotary head device, and FIG. 6 is a diagram of a conventional rotary head device. FIG. 7 is an enlarged front view for explaining the relationship between the position and structure of the lead and the position and structure of the guide roller. FIG. It is a diagram. DESCRIPTION OF SYMBOLS 1... Rotating drum, 2... Rotating shaft, 3... Magnetic head, 7... Magnetic tape, 8... Guide roller, 8a... Upper flange, 8b... Lower flange, 8
c... Guide section, 9... Guide roller, 21...
Fixed drum, 22a...lead, 22b...tapered surface.

Claims

[Claim for Utility Model Registration] A rotating drum on which a magnetic tape pulled out from a cassette half is wound so that the recording surfaces of the tape are in contact with each other, and a magnetic head that scans the recording surface of the magnetic tape is mounted and driven to rotate. and a fixed drum which is fixed coaxially with the rotating drum and has a lead formed along the tape running direction on its outer circumferential surface, which consists of a stepped surface against which the lower end surface of the magnetic tape comes into contact. A rotary head device comprising: a tapered surface that is continuous with the outer end of the lead and extends in an inclined direction toward the outside of the drum on the outer circumferential surface of the fixed drum.