JPS61158684U

JPS61158684U -

Info

Publication number: JPS61158684U
Application number: JP4021685U
Authority: JP
Priority date: 1985-03-20
Filing date: 1985-03-20
Publication date: 1986-10-01

Description

[Brief explanation of the drawing]

第１Ａ図〜第２Ｂ図は本考案を適用したビデオ
テープレコーダ用のテープカセツトの一実施例を
示したものであつて、第１Ａ図及び第１Ｂ図は要
部の断面図、第２Ａ図及び第２Ｂ図は部分拡大断
面図である。第３図〜第４Ｂ図は従来例を示した
ものであつて、第３図はテープカセツトの底面図
、第４Ａ図及び第４Ｂ図は部分断面図である。図面に用いられた符号において、１……磁気テ
ープ、２……リール、３……カセツト筐体、６…
…リール台挿入孔、１１……下フランジ、１３…
…円環状部、１４……上ハーフ、１５……下ハー
フ、２０……リール台、２６……リブ、２７……
テーパー面、２８……円筒面、２９……円筒面、
２９ａ……円筒面の下端、ｇ３……小さな隙間、
ｇ４……大きな隙間、である。 1A to 2B show an embodiment of a tape cassette for a video tape recorder to which the present invention is applied, and FIGS. 1A and 1B are sectional views of the main parts, and FIGS. FIG. 2B is a partially enlarged sectional view. 3 to 4B show a conventional example, in which FIG. 3 is a bottom view of the tape cassette, and FIGS. 4A and 4B are partial sectional views. In the symbols used in the drawings, 1...magnetic tape, 2...reel, 3...cassette case, 6...
...Reel stand insertion hole, 11...Lower flange, 13...
... Annular part, 14 ... Upper half, 15 ... Lower half, 20 ... Reel stand, 26 ... Rib, 27 ...
Tapered surface, 28... Cylindrical surface, 29... Cylindrical surface,
29a... lower end of cylindrical surface, g3... small gap,
g4...a large gap.

Claims

[Scope of Claim for Utility Model Registration] A pair of left and right reels wound with tape is rotatably housed in a cassette housing consisting of an upper and lower half, and the pair of left and right reels are mounted on a reel stand on the underside of their lower flanges. Annular portions for mounting are integrally molded, and when the lower flanges of the pair of left and right reels are placed on the lower half, the annular portions are provided on the lower half of the pair of left and right reel stands. the pair of left and right reel stands are inserted into the insertion holes, and when the pair of left and right reel stands are inserted into the pair of left and right reel stand insertion holes, the pair of left and right reel stands are placed on the reel by these annular parts. In the tape cassette configured such that the lower flanges float above the lower half, a position regulating rib is provided on the outer periphery of the annular portion on the lower surface of the lower flanges of the pair of left and right reels. are integrally molded, and the amount of protrusion of the rib is smaller than the amount of protrusion of the annular portion downward from the lower surface of the lower flange, The upper half is formed into an annular tapered surface whose diameter gradually increases upward, and the lower half is formed into a vertical cylindrical surface, and the lower flanges of the pair of left and right reels are connected to the upper half of the lower half. By inserting the rib together with the annular portion into the pair of left and right reel stand insertion holes, the lower ends of the vertical cylindrical surfaces on the outer periphery of these ribs are aligned with the ends of the reel stand insertion holes. These ribs are placed horizontally opposite each other with a small gap inside the vertical cylindrical surface of the lower half, and these ribs regulate the horizontal position of the reel within the reel base insertion hole. When the pair of left and right reel stands are inserted into the pair of left and right reel stand insertion holes and the pair of left and right reels are placed on the reel stands by these annular parts, the perpendicularity of the outer periphery of the rib A tape cassette characterized in that a large gap is formed between the lower end of the cylindrical surface and the tapered surface of substantially the upper half of the reel base insertion hole.