JPS60135842U

JPS60135842U - Tape guide drum lead device

Info

Publication number: JPS60135842U
Application number: JP2234984U
Authority: JP
Inventors: 千野　悠義; 二郎藤原
Original assignee: ソニー株式会社
Priority date: 1984-02-17
Filing date: 1984-02-17
Publication date: 1985-09-09

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

−第１図〜第３図は従来のビデオテープレコーダにおけ
る回転ヘッドドラムのリード装置を示したものであって
、第１図は斜視図、第２図は平面図、第３図は正面図で
ある。第４図〜第１０図は本考案をビデオテープレコー
ダの回転ヘッドドラムに適用したリード装置の実施例を
示したものであって、第４図は平面図、第５図はリード
ブロックの取付方法の第１例を示した分解斜視図、第６
図は同上の取付完了状態の斜視図、第７図は第９図Ｘ−
Ｘ線断面図、第８図は第９図Ｘ−Ｘ線断面図、第９図は
リードブロックの取付方法の第２例を示した斜視図、第
１０図は第９図Ｘ−Ｘ線断面図である。また図面に用いられた符号において、１・・・・・・回
転ヘッド“ドラム、２・・・・・・固定ドラム、２ａ・
・・・・・固定ドラムの周面、５・・・・・・テープリ
ード、６・・・・・・磁気テープ、６ａ・・・・・・磁
気テープの下側エツジ、７・・・・・・テープ入口、８
・・・・・・テープ出口、１３・・・・・・切欠き、１
４・・・・・・切欠き、１５・・・・・・リードブロー
ツク、１５ａ・・・・・・リードブロックの上端面、１
８・・・・・・取付Ｌ　２５・・・・・・ビス、２９・
・・・・・ビス、Ｐｌ・・・・・・テープ接触開始位置
、Ｐ２・・・・・・テープ接触紙工位置、Ａ・・・・・
・テープ接触領域、Ｂ・・・・・・テープ接触領域であ
る。第８図第９図- Figures 1 to 3 show a read device for a rotary head drum in a conventional video tape recorder, in which Figure 1 is a perspective view, Figure 2 is a plan view, and Figure 3 is a front view. be. Figures 4 to 10 show an embodiment of a lead device in which the present invention is applied to a rotating head drum of a video tape recorder, with Figure 4 being a plan view and Figure 5 showing a method for attaching a lead block. An exploded perspective view showing the first example of the sixth example.
The figure is a perspective view of the same as above with the installation completed, Figure 7 is Figure 9
8 is a cross-sectional view taken along the line X-X in FIG. 9, FIG. 9 is a perspective view showing a second example of the lead block mounting method, and FIG. 10 is a cross-sectional view taken along the line X-X in FIG. 9. It is a diagram. In addition, in the symbols used in the drawings, 1...rotating head drum, 2...fixed drum, 2a...
...Surrounding surface of fixed drum, 5...Tape lead, 6...Magnetic tape, 6a...Lower edge of magnetic tape, 7... ...Tape entrance, 8
...Tape exit, 13...Notch, 1
4... Notch, 15... Lead block, 15a... Upper end surface of lead block, 1
8...Mounting L 25...Screw, 29.
..... Screw, Pl ..... Tape contact start position, P2 ..... Tape contact paper work position, A .....
- Tape contact area, B... Tape contact area. Figure 8 Figure 9

Claims

[Scope of utility model registration request]

A tape lead formed into a spiral shape by cutting is provided on the circumferential surface of the tape guide drum, and the edge of the tape that is spirally wound around the circumferential surface of the tape guide drum and runs is guided by the tape lead. In the tape guide drum lead device configured to allow the tape lead to move, the tape lead has a tape contact area of about 50 degrees from the tape contact start position in the tape population and a tape contact end position of about 50 degrees on the tape exit side. A notch is provided in each tape contact area, and lead blocks made of a wear-resistant material such as ceramic are installed in these notches, and the edge of the tape is guided by the lead block in both tape contact areas. A tape guide drum lead device characterized in that it is configured as follows.