JPS61114581U

JPS61114581U -

Info

Publication number: JPS61114581U
Application number: JP20068484U
Authority: JP
Priority date: 1984-12-27
Filing date: 1984-12-27
Publication date: 1986-07-19

Description

[Brief explanation of the drawing]

第１図〜第３図は本考案をビデオテープレコー
ダ用のテープカセツトに適用した一実施例を示す
ものであつて、第１図は大カセツトを大径のリー
ル台に装着させた状態における要部の拡大断面図
、第２図は大カセツトを小径のリール台に装着さ
せた状態における要部の拡大断面図、第３図は巾
広の円環状凸部の成形状況を説明するための拡大
断面図である。第４図〜第６図はビデオテープレ
コーダ用の従来のテープカセツトを示すものであ
つて、第４図は大カセツトを大径のリール台に装
着させた状態における断面図、第５図は小カセツ
トを小径のリール台に装着させた状態における断
面図、第６図は大径及び小径の２つの円環状凸部
の成形状況を説明するための拡大断面図である。なお図面に用いた符号において、１……大カセ
ツト、５……カセツト筐体、７……大リール、１
１……磁気テープ、１３……大径の円環状凸部、
１４……小径の円環状凸部、１７……大径のリー
ル台、１８……小径のリール台、２７……巾広の
円環状凸部、２７ａ……下端面である。 Figures 1 to 3 show an embodiment in which the present invention is applied to a tape cassette for a video tape recorder, and Figure 1 shows the main points when a large cassette is mounted on a large diameter reel stand. Fig. 2 is an enlarged sectional view of the main part with the large cassette mounted on the small diameter reel stand, Fig. 3 is an enlarged view to explain the forming situation of the wide annular convex part. FIG. Figures 4 to 6 show conventional tape cassettes for video tape recorders, with Figure 4 being a sectional view of a large cassette mounted on a large diameter reel stand, and Figure 5 being a small cassette. FIG. 6 is a cross-sectional view showing the cassette mounted on a small-diameter reel stand, and FIG. 6 is an enlarged cross-sectional view for explaining the molding state of two annular convex portions having a large diameter and a small diameter. In addition, in the symbols used in the drawings, 1...Large cassette, 5...Cassette housing, 7...Large reel, 1
1...Magnetic tape, 13...Large diameter annular convex portion,
14...Small diameter annular convex portion, 17...Large diameter reel stand, 18...Small diameter reel stand, 27...Wide annular protrusion, 27a...Lower end surface.

Claims

[Scope of utility model registration request]

A reel wound with tape is rotatably stored in a cassette housing, and two annular protrusions of a large diameter and a small diameter are provided concentrically spaced apart on the lower surface of the reel, and two annular protrusions of a large diameter and a small diameter are provided on the lower surface of the reel. The tape cassette is configured so that it can be selectively mounted on two reel stands, and when the tape cassette is selectively mounted on the large diameter reel stand, each of the two annular convex portions of the large diameter and small diameter The lower end surface of the small-diameter annular convex portion is configured to be placed on the large-diameter reel stand, and when the small-diameter reel stand is selectively mounted, the lower end face of the small-diameter annular convex portion is placed on the small-diameter reel stand. In the tape cassette configured to be placed, the annular projection provided on the lower surface of the reel has an outer diameter that matches the outer diameter of the large diameter annular projection and the inner diameter of the small diameter annular projection, respectively. It is constituted by one wide annular convex portion having an outer diameter and an inner diameter that match the diameter and inner diameter, respectively, and when selectively attached to the large diameter reel stand, the wide annular convex portion The entire lower end surface of the convex portion is configured to be placed on the large diameter reel stand, and when it is selectively mounted on the small diameter reel stand, the inner diameter of the lower end surface of the wide annular convex portion is A tape cassette characterized in that the side portion is configured to be placed on the small diameter reel stand.