WO1985004041A1 - Bobine pour cassettes a bandes du type a bobine ouverte - Google Patents

Bobine pour cassettes a bandes du type a bobine ouverte Download PDF

Info

Publication number
WO1985004041A1
WO1985004041A1 PCT/JP1985/000105 JP8500105W WO8504041A1 WO 1985004041 A1 WO1985004041 A1 WO 1985004041A1 JP 8500105 W JP8500105 W JP 8500105W WO 8504041 A1 WO8504041 A1 WO 8504041A1
Authority
WO
WIPO (PCT)
Prior art keywords
reel
open
tape
type tape
cassette
Prior art date
Application number
PCT/JP1985/000105
Other languages
English (en)
Japanese (ja)
Inventor
Kenji Kishida
Original Assignee
Soda Nikka Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Soda Nikka Co., Ltd. filed Critical Soda Nikka Co., Ltd.
Publication of WO1985004041A1 publication Critical patent/WO1985004041A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/037—Single reels or spools
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
    • G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
    • G11B23/08707—Details
    • G11B23/08728—Reels or cores; positioning of the reels in the cassette

Definitions

  • the present invention relates to a reel used for an open-reel type tape cassette.
  • a variety of playback devices are offered to young people who love music, and among them, the cassette tape playback device is especially portable. In recent years, more and more enthusiasts have been acquired, coupled with the improved tape performance.
  • This open-reel type tape cassette has a pair of annular projections formed inside a pair of cassette halves.
  • a pair of reels consisting of a series of tapes with a reel hub sandwiched between a set of metal flanges, are attached to the annular projection.
  • the tape is driven by rotating the reel by positioning the heave by the ridge and the tape to run.
  • the reel-type tape cassette is a surprising and superior aesthetic with a special reel in a limited space cassette.
  • the magnetic tape may be caught on a metal flange, such as aluminum, that forms a reel, and the metal flange may be a cassette half. This may cause the flat surface of the tape to be pulled out, which may result in tapes being damaged or noise occurring during playback. O occurred at a rate
  • the purpose of the present invention is to eliminate the need for arranging a sheet made of synthetic resin, reduce costs and assembly man-hours, and improve the quality of reproduced sound. To provide reels for pun-reel tape cassettes.
  • the reel of the invention comprises a pair of reels formed by winding a first-speed magnetic tape with a reel hub sandwiched between a set of disk-shaped metal flanges.
  • An open-reel tape cassette mounted inside the cassette half and configured to rotate these reels to run the tape It is characterized in that, in the reel used in the above, the outer peripheral edge of the pair of metal flanges is chamfered.
  • FIG. 1 is a perspective view of an open reel type tape cassette
  • FIG. 2 is an exploded perspective view of the reel
  • FIG. 3 to FIG. A sectional view of the metal flange used for the reel is shown.
  • the open reel type tape force set has a pair of reels 2 inside a cassette half 1 made of a transparent synthetic resin.
  • the reel 2 which is rotatably arranged at a predetermined position by an annular projection (not shown) is composed of a synthetic resin shaped cylindrical shape.
  • a reel hub 3 which is a material, a continuous magnetic tape 4 wound around the reel hub 3, and the tape 4 are sandwiched.
  • It is a metal flange 5 of a lightweight metal disk ⁇ that is fixed to both sides of the reel hub 3.
  • This metal flange 5 is, for example, used for fitting holes and projections.
  • the metal flange 5 is connected to the reel hub 3 and a part of the tape 4, and the metal flange 5 and the cassette are connected to the reel hub 3.
  • a smooth resin sheet was interposed between each half of the half.
  • the inventor has found that the magnetic tape could be caught on the metal flange that would occur when the resin sheet was not interposed, and the flat surface of the metal flange's cassette half As a result, we investigated the cause. As a result, metal flanges that require the use of light metals such as aluminum for aesthetic reasons are generally stamped out of metal plates. The metal flange has a sharp edge at the outer edge of the metal flange, and the surface condition of this edge indicates the tape running. It has been found that this may cause trouble or damage to the force-set half, which in turn may cause abnormal noise, and to elucidate this fact as a starting point.
  • metal flange 5 of the reel of the invention includes: As shown in FIGS. 3 and 5, the chamfer is applied over the entire circumference of the outer peripheral end.The surface of the outer peripheral end of the metal flange of the present invention.
  • chamfering There are several modes of chamfering, as shown in Fig. 3; a mat with tapered chamfers on the front and back surfaces of the metal flange; Fig. 4
  • the blinds that envelop the front and back of the outer peripheral part in an integrated manner, and the tapered surface only at the end of the side surface where the surface condition is particularly poor, as shown in Fig. 5.
  • the size of the chamfer is about 0.05 to 0.4 mm.
  • the metal flange of the reel according to the invention has a through hole in the center of the side for mounting the reel hub on the playback device.
  • Apertures of various shapes for detecting the winding amount of the tape may be provided on the side surface.
  • the magnetic table 4 can surprisingly be obtained even if the resin sheet is omitted. There is no damage to the metal flange 5 and no damage to the cassette half 1, and no abnormal noise is generated during playback.

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  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

Dans une bobine destinée à des cassettes à bande du type à bobine ouverte, les portions de bordures circonférencielles extérieures d'une paire de brides métalliques du type à disque, qui constituent une bobine, sont chanfreinées. Cette bobine permet la suppréssion des feuilles transparentes de résine synthétique qui sont prévues sur la face intérieure des brides métalliques et entre le boîtier de la cassette et la bobine dans une cassette à bande conventionnelle du type à bobine ouverte, et la production de cassettes à bandes du type à bobine ouverte, peu couteûses et de hautes performances.
PCT/JP1985/000105 1984-03-02 1985-03-02 Bobine pour cassettes a bandes du type a bobine ouverte WO1985004041A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2923384U JPS60142871U (ja) 1984-03-02 1984-03-02 オ−プンリ−ル型テ−プカセツトのリ−ル
JP59/29233U 1984-03-02

Publications (1)

Publication Number Publication Date
WO1985004041A1 true WO1985004041A1 (fr) 1985-09-12

Family

ID=12270508

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1985/000105 WO1985004041A1 (fr) 1984-03-02 1985-03-02 Bobine pour cassettes a bandes du type a bobine ouverte

Country Status (2)

Country Link
JP (1) JPS60142871U (fr)
WO (1) WO1985004041A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274182A2 (fr) * 1987-01-07 1988-07-13 Shape Inc. Cassette à bande

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2408963A1 (de) * 1974-02-25 1975-09-04 Kurt Bleich Bandspule fuer compact-cassetten

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2408963A1 (de) * 1974-02-25 1975-09-04 Kurt Bleich Bandspule fuer compact-cassetten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274182A2 (fr) * 1987-01-07 1988-07-13 Shape Inc. Cassette à bande
EP0274182A3 (en) * 1987-01-07 1989-06-07 Shape Inc. Tape reel assembly and cassette

Also Published As

Publication number Publication date
JPS60142871U (ja) 1985-09-21

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