公开(公告)号：JPH1064229A

公开(公告)日：1998-03-06

申请号：JP22517396

申请日：1996-08-27

Applicant: SONY CORP

Inventor： MAMIYA TOSHIO ,  YAMAMOTO KAZUYUKI ,  YAMADA TAKASHI ,  TAKAHASHI KAZUO ,  OSHIMA EIJI

IPC: G11B23/033

Abstract: PROBLEM TO BE SOLVED: To realize reduction of thickness and improve workability in manufacture by symmetrically forming an upper shell and lower shell having formed one side surface as a curving surface, and integrally coupling the lower shell and upper shell. SOLUTION: A shutter member 5 is sequentially rotated around an axis 16 against an urging means 18 and adequate loading can be confirmed when a disc cartridge collides with stopper members 47, 48 under the adequate condition. Moreover, the shutter member 5 is perfectly opened and the aperture closed by the shutter member is totally opened and simultaneously a hole 12 for chuck of the lower shell in which the center core is located is also opened.

公开(公告)号：JPH1064225A

公开(公告)日：1998-03-06

申请号：JP22409796

申请日：1996-08-26

Applicant: SONY CORP

Inventor： MAMIYA TOSHIO ,  YAMAMOTO KAZUYUKI ,  YAMADA TAKASHI ,  TAKAHASHI KAZUO ,  OSHIMA EIJI

IPC: G11B23/033

Abstract: PROBLEM TO BE SOLVED: To prevent damage on a disc by dust by forming the end part side of a disc cartridge as a curving surface, providing an aperture to a part of this curving surface and providing a shutter member which opens or closes along this aperture. SOLUTION: A shutter member 31 is formed, for example, of a plastic member. In this case, it is satisfactory if the end part 5a of the shutter member 5 formed of a metal member is curved a little and a plastic member is molded integrally to wrap the end part 5a and to allow one side of plastic member to be projected to a large extent to the front side and the other side thereof to be projected a little to the rear surface side. When such shutter member 31 is formed as explained above, since it is guided by a thinner area 14a of the lower shell 2 and a thinner area of the upper shell 3 and the shutter member 5 formed of a metal material can realize the opening or closing operation without contact with the internal wall of the lower shell 2, generation of dust such as chip which may be generated through friction of the surfaces can be prevented.

公开(公告)号：JPH09282747A

公开(公告)日：1997-10-31

申请号：JP8849196

申请日：1996-04-10

Applicant: SONY CORP

Inventor： UETAKE AKIHIRO ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  TAKASE MASATAKE ,  IKEMA KATSUAKI ,  SUZUKI KAZUYOSHI ,  TAKAHASHI KATSUNORI

IPC: G11B15/61 ,  G11B15/665

Abstract: PROBLEM TO BE SOLVED: To unnecessitate a lock screw of a tape guide and to widen a selection range of materials which can be used for a guide base by mounting a plate spring between a guide base and a holding body of a tape guide. SOLUTION: The spring force of a plate spring 41 mounted between a guide base 40 and a vertical guide 11 of a slide member 10 is always applied to an under face of a holding body 47 of the vertical guide. Consequently, even when a holding force of a guide shaft 44 by a guide base 40 is lost by creep generated in the guide base 40, the vertical guide 11 is always energized in the upper direction by a spring force of the plate spring 41, and rotation of the vertical guide 11 is prevented. Therefore, the vertical guide 11 can be surely held without using a lock screw for locking the guide shaft 44 of the vertical guide 11, and a general material having less creep-resistance can be used as the guide base 40.

公开(公告)号：JPH09282739A

公开(公告)日：1997-10-31

申请号：JP8416196

申请日：1996-04-05

Applicant: SONY CORP

Inventor： TAKAHASHI KATSUNORI ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  TAKASE MASATAKE ,  UETAKE AKIHIRO ,  IKEMA KATSUAKI ,  SUZUKI KAZUYOSHI

IPC: F16H7/12 ,  G11B15/43

Abstract: PROBLEM TO BE SOLVED: To make a spring tension adjusting amt. of a tension coil spring proportional to a moving amt. of a tension regulator arm. SOLUTION: One end of a tension coil spring 28 for spring-energizing a tension regulator in the direction of imparting back tension to a tape in a tape traveling system is supported by the tension regulator arm, while the other end can selectively be restrained by plural restraining parts 35a, 35b and 35c provided at stepwise different distances in a spring tension adjusting mechanism 29. Then, the spring tension adjusting mechanism 29 is capable of turning around a turning fulcrum axis 37, and the turning fulcrum axis 37 is set so as to be an operating point of spring tension of the tension coil spring 28.

公开(公告)号：JPH09274788A

公开(公告)日：1997-10-21

申请号：JP8161796

申请日：1996-04-03

Applicant: SONY CORP

Inventor： UETAKE AKIHIRO ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  TAKASE MASATAKE ,  IKEMA KATSUAKI ,  SUZUKI KAZUYOSHI ,  TAKAHASHI KATSUNORI

IPC: G11B23/50

Abstract: PROBLEM TO BE SOLVED: To obtain a tape cleaning mechanism for a recording and reproducing device which can perform cleaning operation of a magnetic tape with simple mechanical constitution without requiring a special driving source such as a plunger and the like. SOLUTION: In a recording and reproducing device of a VTR device, a tape cleaning mechanism 40 provided with a cleaning member 43 directly before or directly after of a tape guide 9 of a tension regulator 8 is arranged, the tape cleaning mechanism 40 can be moved to a cleaning position and a non- cleaning position by rotation of a cam gear linking to a tape running mode through a spring member 44 formed integrally with a cleaning body section 41. And when a tape running state is FWD running, a magnetic tape T is contacted to the cleaning member 43 and is in a cleaning operation state, when a tape running state is REV running, a running path of the magnetic tape T set to a tape guide is moved linking to elevation of tape tension, the magnetic tape is apart from the cleaning member 43 and is in a non-cleaning state.

公开(公告)号：JPH09274749A

公开(公告)日：1997-10-21

申请号：JP8266196

申请日：1996-04-04

Applicant: SONY CORP

Inventor： TAKAHASHI KATSUNORI ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  TAKASE MASATAKE ,  UETAKE AKIHIRO ,  IKEMA KATSUAKI ,  SUZUKI KAZUYOSHI

IPC: G11B15/43

Abstract: PROBLEM TO BE SOLVED: To provide a tension regulator mechanism for a recording and reproducing device applicable to a VCR device, etc., capable of effectively preventing a hunting phenomenon of a tension regulator arm by adding a simple member. SOLUTION: The tension regulator arm 8 has a tension coil spring 26 for spring energization in the direction of enhancing tape tension in a tape traveling system, and a damper sheet 35 is inserted into this tension coil spring 26 to come under the state of friction contact between them to give a damper effect in expansion and contraction of the spring. Consequently, resonance operation is prevented from happening to the tension regulator arm 8.

公开(公告)号：JPH09274748A

公开(公告)日：1997-10-21

申请号：JP8266396

申请日：1996-04-04

Applicant: SONY CORP

Inventor： TAKAHASHI KATSUNORI ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  TAKASE MASATAKE ,  UETAKE AKIHIRO ,  IKEMA KATSUAKI ,  SUZUKI KAZUYOSHI

IPC: G11B15/30

Abstract: PROBLEM TO BE SOLVED: To sufficiently increase the friction resistance of a rotation contact part and to shorten the accessing time of searching by supporting a rotary body in a rotational center axis via a bearing body. SOLUTION: This tape recording/reproducing device is provided with a rotary body 36, a reel lug 37, a height adjusting screw 38, a bearing body 39 and a coil spring 40. Reel bases 1 and 2 are rotated around a reel shaft 35, and a magnetic tape T from a supply side reel 5 is taken up on a take-up side reel 6. At this time, the rotary body 36 is rotated around the shaft 35 in the reel bases 1 and 2, and the height adjusting screw 38 and the bearing body 39 integrated to the rotary body 36 are also rotated integrally.

公开(公告)号：JPH09259494A

公开(公告)日：1997-10-03

申请号：JP6312096

申请日：1996-03-19

Applicant: SONY CORP

Inventor： TAKASE MASATAKE ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  UETAKE AKIHIRO ,  IKEMA KATSUAKI ,  SUZUKI KAZUYOSHI ,  TAKAHASHI KATSUNORI

IPC: G11B15/665

Abstract: PROBLEM TO BE SOLVED: To provide a recording/reproducing device suitably used for a VCR (video cassette recorder) device capable of raising the caps of cassettes different in size by one cassette cap raising mechanism supported on a cassette holder so as to be rotatable. SOLUTION: A cassette cap raising main body part 72 is supported on a cassette holder 7 like a bridge so as to be rotatable a small cassette cap raising piece 75 and a large cassette cap raising piece 76 are provided in the cassette cap raising main body part 72, the cap of a small cassette is raised by one cap raising piece 75 by the operation of the cassette cap raising main body 72 rotated associatively with the loading operation of the cassette holder 7 in a loading position and the cap of a large cassette is raised by the other cap raising piece 76.

公开(公告)号：JPH08221847A

公开(公告)日：1996-08-30

申请号：JP2422595

申请日：1995-02-13

Applicant: SONY CORP

Inventor： UETAKE AKIHIRO ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  TAKASE MASATAKE ,  IKEMA KATSUAKI ,  SUZUKI KAZUYOSHI ,  TAKAHASHI KATSUNORI

IPC: F16D49/04 ,  G11B15/22 ,  G11B15/43

Abstract: PURPOSE: To control tension as well as to prevent excessive tension by providing band brakes on both supply and take-up reels respectively and setting them to be a bite side when feeding and to be a relief side when taking up respectively. CONSTITUTION: When being an FWD mode, a tape coming out of the supply reel 1 is traveled via a guide post 29, a tension guide 27 and a tape guide 22a. Tension of a spring 36 is received by the brake band 38 at its moving end 38a via a tension arm 25, so that braking force is applied to a brake drum 40 of the supply reel 1, and the tension is imparted to the tape. When the tension is increased, the tension guide 27 is operated to weaken the braking force of the brake band 38 against the tension of the spring 36, and the tension of the tape is controlled to be constant. The fixing end 38b of the brake band 38 is so arranged that the brake should be on the biting side when feeding rotation, and hence on the relief side when taking up rotation to weaken the braking force.

公开(公告)号：JPH08212629A

公开(公告)日：1996-08-20

申请号：JP1725995

申请日：1995-02-03

Applicant: SONY CORP

Inventor： SUZUKI KAZUYOSHI ,  MAMIYA TOSHIO ,  AKIMOTO KATSUJI ,  TAKASE MASATAKE ,  UETAKE AKIHIRO ,  IKEMA KATSUAKI ,  TAKAHASHI KATSUNORI

IPC: G11B15/26 ,  G11B15/32

Abstract: PURPOSE: To provide a recording and reproducing device where backlash between a driven gear and a reel base gear is kept constant so as to smoothly transmit rotational force, whose reliability is high, and which is light in weight and inexpensive. CONSTITUTION: A stopper mechanism keeping the backlash between the driven gear 56 and the supply side reel base gear 54 or the take-up side reel base gear 55 constant is provided between a disk body 59 and a supply side reel base holding member 36 or a take-up side reel base holding member 37 or a mechanical deck chassis 9.