JPS60142880U

JPS60142880U - tape cassette hub

Info

Publication number: JPS60142880U
Application number: JP2911884U
Authority: JP
Inventors: 松坂　孝儀; 菅原　康吉
Original assignee: ソニー株式会社
Priority date: 1984-02-29
Filing date: 1984-02-29
Publication date: 1985-09-21

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図は従来のテープカセットの一例を示す部分断面平
面図、第２図はその要部の拡大平面図、第３図は第１図
のテープカセットのハブに巻装されている磁気テープの
一部を示す拡大斜視図、第一４図は他の従来例のテープ
カセットのハブの一例を示す拡大平面図、第５図は第４
図のハブに磁気　　“−′テープ等を巻装した状態を示
す平面図、第６図は第４図の■−■線断面図、第７図は
第４図に示すハブの要部の拡大平面図、第８図は第４図
のハブに磁気テープ等が不正常に巻装された状態を示す
平面図、第９図は本考案のテープカセットのハブの一実
施例を示す拡大平面図どある。５．６はハブ、２３は向合、２５はリム部、２５ａ、２
５ｂはリム梁部、２６，２６ａ、２６ｂはテープ巻付面
、２７はノツチ部、２８は凹部、２９は円形透孔、３１
はクランプピース、３４は支台、３５は支台の上面であ
る。第７図　　　′ Ｇ１２４ｂ　　　　２５Fig. 1 is a partial cross-sectional plan view showing an example of a conventional tape cassette, Fig. 2 is an enlarged plan view of its main parts, and Fig. 3 shows the magnetic tape wound around the hub of the tape cassette shown in Fig. 1. 14 is an enlarged plan view showing an example of the hub of another conventional tape cassette, and FIG.
A plan view showing the state in which the hub shown in the figure is wrapped with magnetic tape, etc., Figure 6 is a sectional view taken along the line ■-■ in Figure 4, and Figure 7 is an enlarged view of the main parts of the hub shown in Figure 4. 8 is a plan view showing a state in which a magnetic tape or the like is improperly wound around the hub of FIG. 4; FIG. 9 is an enlarged plan view showing an embodiment of the hub of the tape cassette of the present invention; FIG. Where is it? 5.6 is the hub, 23 is the opposite side, 25 is the rim part, 25a, 2
5b is a rim beam portion, 26, 26a, 26b are tape wrapping surfaces, 27 is a notch portion, 28 is a recessed portion, 29 is a circular through hole, 31
34 is a clamp piece, 34 is an abutment, and 35 is an upper surface of the abutment. Figure 7 ′ G 1 24b 25

Claims

[Scope of utility model registration request]

A locking portion for locking one end of a magnetic tape or the like is provided on the opposite side, and a rim beam portion in the form of a cantilevered beam is provided continuously to the rim portion in correspondence with the locking portion. A gap is provided at the free end for passing the magnetic tape, etc., and an abutment is provided opposite to the rim for supporting the rim beam in a predetermined position, and one end of the rim beam is fixed to the fastening section. The magnetic tape or the like passes through the upper gap and is wound around the rim beam and the tape wrapping surface on the outer periphery of the rim in a certain direction of the rim beam, and the winding tension at this time varies. A hub for a tape cassette, characterized in that the tape winding surface is perfectly circular even when the tape is wound on the hub.