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    TAPE CASSETTE
    27.
    发明专利
    TAPE CASSETTE 失效

    公开(公告)号：JPS61210588A

    公开(公告)日：1986-09-18

    申请号：JP4112586

    申请日：1986-02-26

    Applicant: SONY CORP

    Inventor： MATSUMOTO YOSHIHARU ,  FUJIMORI TORU ,  KUSUI YOSHIO ,  OOTA SHUICHI ,  KUMAGAI ATSUHIRO

    IPC: G11B23/087

    Abstract: PURPOSE:To prevent a torsion coil spring from changing a direction thereof or dropping off in assembly and facilitate assembly by attaching the torsion coil spring together with a front cover to a cassette casing with the spring fixed temporarily on an external periphery of a fulcrum pin of a front cover. CONSTITUTION:On an internal side face of a pair of right and left side plate sections 37a of a front cover 37, a pair of fulcrum pins 41 are integrally formed. The pins 41 are supported by a bearing to pin holes 42 of right and left both sides bracket sections 36 of a front side of an upper half 2 and the front cover 37 is turnable. In order to attach the front cover 37 to the casing 2, end sections 58a and 58b of an integral torsion coil spring 58 with a little torsion energized condition are inserted into an external periphery of the fulcrum pins 41 to lock temporarily with spring locking projected sections 56 and 57 not so as to drop the torsion coil spring 58 from the fulcrum pins 41 unexpectedly. Under this condition, when the front cover 37 is attached to the casing 2, an end section 58a of the torsion coil spring 58 is pressed by a spring locking section 59 and the front cover 37 is turned and energized in a closing direction.

    REEL LOCK DEVICE FOR TAPE CASSETTE
    28.
    发明专利
    REEL LOCK DEVICE FOR TAPE CASSETTE 失效

    公开(公告)号：JPS61210582A

    公开(公告)日：1986-09-18

    申请号：JP3446586

    申请日：1986-02-19

    Applicant: SONY CORP

    Inventor： MATSUMOTO YOSHIHARU ,  FUJIMORI TORU ,  KUSUI YOSHIO ,  OOTA SHUICHI ,  KUMAGAI ATSUHIRO

    IPC: G11B23/087

    Abstract: PURPOSE:To prevent dusts and the like from invading into a cassette by providing an inserting hole of a lock releasing pin closing on a lower surface of a main body in a lower half and an engaging hole of the lock releasing pin closing an upper end in the lower surface of the main body. CONSTITUTION:When a tape cassette is mounted an a video recorder, a lock releasing pin 103 disposed in a cassette mounting position in the video recorder is inserted from an inserting hole 95 of a lower half 3 and into an engaging hole 104 of a claw body 90. Since the engaging hole 104 of the claw body 90 has an upper end thereof closed and a blind hole and the inserting hole 95 of the lock releasing pin 103 of the lower half 3 is usually closed on a lower surface 101a of a main body 101, from these inserting hole 95 and the engaging hole 104, dusts and the like does not enter the tape cassette. Accordingly, the sticking of the dusts and the like to the tape due to entering the same to the tape cassette and the generation of a dropout and the like during recording and reproducing the tape can be previously prevented.

    REEL LOCK DEVICE FOR TAPE CASSETTE
    29.
    发明专利
    REEL LOCK DEVICE FOR TAPE CASSETTE 失效

    公开(公告)号：JPS61210581A

    公开(公告)日：1986-09-18

    申请号：JP3446486

    申请日：1986-02-19

    Applicant: SONY CORP

    Inventor： MATSUMOTO YOSHIHARU ,  FUJIMORI TORU ,  KUSUI YOSHIO ,  OOTA SHUICHI ,  KUMAGAI ATSUHIRO

    IPC: G11B23/087

    Abstract: PURPOSE:To return a claw body by a spring force to engage a resilient engaging piece with teeth section of a tape reel by inserting a torsion spring to a spring supporting pin at a center coil section and abutting a play end section against a lower half. CONSTITUTION:A torsion spring 91 is inserted into a spring supporting pin 102 of a claw body 90 by a center coil section 91 thereof from an upper part and attached and a pair of right and left play end sections 91b abut against a pair of spring receiving sections 99 of a pair of claw bodies 88. Accordingly, when the claw bodies are rotated and energized in a direction shown by arrows (g) and (h) centering a pair of supporting pins 93, the claw body 90 is slid and exerted in a direction of (i) shown by an arrow. The claw body 88 is prevented from rotating in the directions of (g) and (h) since a stopper 100 abuts against a rear surface wall 3c of a lower half 3. A claw section 97 engages with a teeth section 106 and a tape reel 8 is prevented from rotating in a direction shown by an arrow (a) and a tape reel 9 is prevented from rotating in a direction shown by an arrow (b). In this manner, the number of parts and assemblings can be reduced and a structure can be remarkably simplified.

    LOCKING DEVICE OF TAPE REEL
    30.
    发明专利
    LOCKING DEVICE OF TAPE REEL 失效

    公开(公告)号：JPS5862878A

    公开(公告)日：1983-04-14

    申请号：JP15990181

    申请日：1981-10-07

    Applicant: SONY CORP

    Inventor： MATSUMOTO YOSHIHARU ,  FUJIMORI TOORU ,  KUSUI YOSHIO ,  OOTA SHIYUUICHI ,  KUMAGAI ATSUHIRO

    IPC: G11B23/087

    Abstract: PURPOSE:To turn a reel in the direction for winding a tape, and to eliminate loosening of the tape, by providing 2 pawl bodies engaged with the ratchet part of a tape reel, and shifting the timing of its engagement of 2 pawl bodies. CONSTITUTION:In the center part of the rear side of a tape cassette, the first pawl body 88 is pivotally supported by a supporting pin 93 to be freely turnable, the second pawl body 90 is provided to be slidable along a guide plate part 94, and when locking, it is engaged with a ratchet part of a reel. In case of a reproducing made, by a lock release pin interlocked with an operation button, the pawl body 90 moves downward in the figure, and by being pressed by it, the pawl body 88 turns to the inside, and lock is released. In case of a stop mode, the pawl body 90 is engaged at first, the reel is slightly turned in the direction as indicated with arrows (m), (n) in the figure, is loosened, and after that, the pawl body 88 is engaged with the torsion spring 91 and is locked. Therefore, loosening of a tape can be eliminated by providing 2 pawl bodies.

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