公开(公告)号：JPH0729247A

公开(公告)日：1995-01-31

申请号：JP17560193

申请日：1993-07-15

Applicant: SONY CORP

Inventor： SUZUKI KAZUYOSHI ,  UETAKE AKIHIRO ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  TAKASE MASATAKE

IPC: G11B15/22 ,  G11B15/32 ,  G11B15/43

Abstract: PURPOSE:To apply adequate torque on reel base and to miniaturize the device which permits use of large and small tape cassettes and operates the reel base with existing motors by providing the gear of the device with a brake mechanism. CONSTITUTION:The oscillation fulcrum gear 17 on a tape supply side is freely rotatably born coaxially with a fulcrum shaft 5 on a mechanical deck section 4 and is meshed with a gear 11 on the reel base 7. The lower part of the gear 17 is provided with a brake drum 19 of the diameter smaller than the diameter of the gear. A brake and 32, fixed at one end of the mechanical deck part and at the other end to a bearing shaft 28 of a tension regulator arm 27, is brought into pressurized contact with the brake drum 19 of the gear 17. The tape T is brought into elastic contact with a tension regulator pin 29 of the arm 27 and the tension thereon is controlled by turning of the arm 27 and pressurized contact of the band 32 and the drum 19. The size, weight and cost of the device and reduced by the mechanism of adequately adjusting the rotation torque applied on the steel base 7, 8 in such a manner.

公开(公告)号：JPH0721643A

公开(公告)日：1995-01-24

申请号：JP16558593

申请日：1993-07-05

Applicant: SONY CORP

Inventor： TAKASE MASATAKE ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  UETAKE AKIHIRO ,  SUZUKI KAZUYOSHI

IPC: G11B15/675

Abstract: PURPOSE:To prevent malfunction or damage of a mechanism by making the position of the back end of a cassette at the time of starting to pull-in the cassette become constant independent of the kind of cassettes when the cassette in different size are inserted. CONSTITUTION:When the small cassette 33 is inserted to a cassette holder 10 from a cassette inserting window 8 of an outside case member 9, the cassette 33 is never brought into contact with a cassette detecting lever 27 since the horizontal width of the cassette is narrow. Therefore, a switch 29 for detecting cassette size does not perform the changeover operation. The cassette 33 is further inserted, and at the time when the back end 33a of cassette is attained to the position almost coincident with that of the cassette inserting window 8, a lever 30 for detecting cassette insertion is operated for turning by the cassette holder 10 to changeover a switch 32 for detecting cassette insertion. At this time point, the insertion of the small cassette is discriminated. Next, when the large cassette 34 is inserted, the switch 29 is changed over by the lever 27, therefore, the insertion of the large cassette is detected.