JPH0178343U

JPH0178343U -

Info

Publication number: JPH0178343U
Application number: JP1988101281U
Authority: JP
Priority date: 1988-07-29
Filing date: 1988-07-29
Publication date: 1989-05-26

Description

[Brief explanation of drawings]

第１図はテープ走行系の一例を示す平面図、第
２図は第１図の左側面図、第３図は第１図の右側
面図、第４図はＶＴＲの従来のシリンダを示す正
面図、第５図は従来のテープ走行系においてシリ
ンダとその周辺のガイドピンと磁気テープとの関
係を展開して示す説明図、第６図は磁気テープに
形成される記録トラツクを示す正面図、第７図は
従来の記録トラツクの湾曲状態を説明するグラフ
図、第８図はこの考案の一実施例を示す構成図、
第９図はこの考案の動作を説明するための説明図
である。図中、４は磁気テープ、２５はテープリード、
２６は上側エツジ部、２７は下側エツジ部、２８
は上部シリンダ、２９は下部シリンダ、３０は上
部シリンダ周側面、３１は下部シリンダ周側面で
ある。なお、図中、同一符号は同一又は相当部分
を示す。 Fig. 1 is a plan view showing an example of a tape running system, Fig. 2 is a left side view of Fig. 1, Fig. 3 is a right side view of Fig. 1, and Fig. 4 is a front view showing a conventional cylinder of a VTR. 5 is an explanatory diagram showing the relationship between the cylinder, its surrounding guide pins, and the magnetic tape in a conventional tape running system. FIG. 6 is a front view showing recording tracks formed on the magnetic tape. FIG. 7 is a graph diagram explaining the curved state of a conventional recording track, and FIG. 8 is a configuration diagram showing an embodiment of this invention.
FIG. 9 is an explanatory diagram for explaining the operation of this invention. In the figure, 4 is a magnetic tape, 25 is a tape read,
26 is an upper edge portion, 27 is a lower edge portion, 28
29 is the upper cylinder, 29 is the lower cylinder, 30 is the upper cylinder circumferential side, and 31 is the lower cylinder circumferential side. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) A device for guiding and regulating the magnetic tape in its running system while slidingly contacting a magnetic tape, which is a magnetic recording medium, with a convex curved portion, and for guiding and regulating the magnetic tape in its running system; The upper edge portion of the magnetic tape is in sliding contact with the lower cylinder, the lower edge portion of which slides into contact with the lower cylinder, the radius of which is set larger than that of the lower cylinder, and the lower end portion is close to the lower cylinder. and an upper cylinder supported on the lower cylinder, and the lower cylinder has a step-shaped step so as to come into contact with the lower edge of the magnetic tape to guide and regulate the running of the magnetic tape. A tape lead is formed,
A tape guide in which the circumferential surfaces of the upper cylinder and the lower cylinder are formed into continuous conical surfaces whose diameters gradually decrease downward. (2) A tape guide with a conical surface whose inclination angle is 1/50 rad or less.