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
  • G11B23/04—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
  • G11B23/08735—Covers

Definitions

• the present invention relates to a tape cassette most suitable for application to a recording / reproducing device such as a video tape recorder, and more particularly to a cassette housing formed by passing a stored tape along a front opening;
• the front cover which is rotatably attached to the cassette housing covering the front side of the tape, and the rotatable attachment, which is rotatably attached to the front cover which covers the rear side of the passed tape,
• a guide bin provided in the rear lid and a guide groove provided in the cassette housing for guiding the guided bin, and the front lid is rotated in the opening direction.
• the guide bin is guided by the guide groove so that the lower end of the rear lid is separated from the front lid to be separated from the front lid, and then the lid is opened together with the front lid. That is configured to rotate in the It is one of the cascades.
• a force set housing 3 composed of upper and lower halves 1 and 2 and a front lid 4 and a rear antique 5 are each formed of a synthetic resin.
• a magnetic tape 8 wound around a pair of left and right reels 6 and 7 is housed in upper and lower halves 1 and 2, and these upper and lower halves 1 and 2 are fitted together from above and below to form a plurality of screws (see FIG. (Not shown)
• the cassette housing 3 is configured.
• a front opening 10 is provided on the front surface of the cassette housing 3 over the entire length in the left-right direction.
• the front opening 10 is integrated into the cassette housing 3 at positions near the left and right ends of the front opening 10.
• the magnetic tape 8 is guided along the pair of formed tape guides 11 and passes along the front opening 10 as shown in FIG.
• the cassette housing 3 has a pair of tape guides 1 1 1 1
• a recess 12 having a substantially U-shaped planar shape is formed in the rearward position of 10 and the recess 1 2 has a substantially U-shaped planar shape integrally formed in the cassette housing 3.
• the partition wall 13 forms a partition against the storage of the reels 6 and 7 in the cassette housing 3.
• the top and bottom of this place 12 are both open.
• the front lid 4 has a substantially U-shaped planar shape, and a pair of fulcrum bins 15 are integrally formed inside the left and right end portions 4a so as to be coaxial with each other.
• the second front cover 4 as shown in figure rather base covering care before the magnetic tape 8 which is the bus along the front 3 ⁇ 4-face opening 1 0, the right and left pair of pivot bottle 1 5 the cassette casing 3
• a pair of bins provided on the front end side of both side walls 3a in the same sleeve line state are inserted into and installed in a pair of bin inlet holes 16, and the front lid 4 is vertically moved around a rain fulcrum bin 15 as a center. It is attached to the cassette housing 3 so that it can rotate.
• an upper cover 17 is formed integrally with the rear cover 5 along the upper end ⁇ thereof, and a pair of fulcrum bins are provided at the left and right ends ⁇ of the rear cover 5 at substantially the center in the vertical direction. 18 are integrally formed so as to be identical to each other.
• the rear cover 5 has a front cover in a recess 12 covering the rear surface of the magnetic tape 8 passed along the front opening 10.
• the rear lid 5 has a pair of fulcrum bins 18 on the rear surface of the front lid 4 as shown in FIGS.
• the rear lid 5 is attached to the front lid 4 so as to be able to turn up and down around both fulcrum bins 18.
• the upper cover 17 is disposed so as to cover the upper surface of the recess 12 as shown in FIG.
• the left and right end portions 13a of the partition wall 13 are opposed to each other in parallel from the left and right direction, and the facing surfaces of the left and right end portions 13a are substantially S-shaped.
• a pair of guide grooves 21 that are gently bent are provided.
• the upper ends 21a of the guide grooves 21 are open upward.
• a pair of protruding pieces 22 are formed below the fulcrum bins 18 on the rear surfaces of both right and left edges of the rear lid 5.
• the front lid 4 is rotationally urged by a torsion coil spring in the direction of closing the lid, which is the direction of arrow a in FIG. 2, and is opened by the opening lever at the closed position. It is configured to:
• the front lid 4 is closed in a closed state as shown by a solid line in FIG.
• the magnetic tape 8 passed along the front opening 10 is covered by the front cover 4 and the rear cover 5 so as to be wrapped from the front and back, and is a so-called completely closed type. Tape force set.
• the front cover 4 is unlocked, and the front cover 4 is rotated by approximately 90 ° in the closing direction, which is the direction of the arrow a ′, so that the front cover 4 is rotated.
• the opening 10 is opened.
• the front lid 4 is rotated approximately 90 times in the direction of the arrow a 'from the closed lid position shown by the solid line to the open lid position shown by the imaginary line in FIG.
• the rear lid 5 As the two fulcrum bins 18 of the rear lid 5 are rotated in the same direction and at the same angle by being moved, the rear lid 5 is also moved together with the front lid 4 from the closed lid position shown by a solid line in FIG. It is rotated to the lid opening position indicated by the virtual line. At this time, by rotating both fulcrum bins 18 in the direction of arrow a ', both guided bins 23 are guided by both guide grooves 21 and moved in the direction of arrow c. The direction in which the lower end 5a of the rear lid 5 is separated from the front lid 4 by the guide groove 21 in the direction of arrow d with respect to the front lid 4 in the direction of arrow d.
• the lid is opened in the direction of arrow a 'while being rotated.
• the front lid 4 is rotated in the direction of the arrow a in FIG.
• the guide bin 23 moves in the guide groove 21 in the direction of the arrow c 'while rotating in the direction indicated by the arrow a while rotating in the direction indicated by the solid line in FIG. Is moved back to the lower end.
• this kind of tape force set covers the magnetic tape 8 bused along the front opening 10 of the force set housing 3 from the front and rear by the front cover 4 and the rear cover 5 when the cover is closed. It is configured to be completely sealed. Accordingly, as shown in FIG. 3, the lower end 5a of the rear cover 5 is firstly lowered from above as shown by the arrow e in FIG. The lower end 5a is moved closer to the magnetic tape 8 as shown by the solid line, and then the lower end 5a of the rear lid 5 is closed so as to extend below the magnetic tape 8 as shown by the arrow f. It is performed so that it is moved to the virtual line position that is the lid state. Then, the front end face 25 of the lower end 5 a of the rear lid 5 is brought into contact with the notch 26 provided on the lower back 4 b of the front lid 4 so that the magnetic tape 8 is closed. Sealed.
• ⁇ are standardized as 1 «or more.
• the cassette housing 3, the front lid 4, the rear lid 5, and the like are formed of synthetic resin, it is not possible to avoid respective molding errors. For this reason, it is difficult to keep the separation distance £ t between the upper end corner portion 27 of the lower end 5 a of the lower end 5 a of the rear lid 5 and the magnetic tape 8 larger than a certain value, and it is often difficult to maintain the upper end. There were defects such as the corner portion 27 coming into contact with the magnetic tape 8 and the magnetic tape 8 being inserted. Such damage to the magnetic tape 8 is a fatal defect for this kind of tape cassette.
• An object of the present invention is to solve a problem such as an upper lid, and when closing a rear lid, thereafter, when the upper end corner portion of the lower end front end face of the lid and the magnetic tape are closest to each other, the rear lid is closed.
• the purpose is to make the distance between the top corner and the magnetic tape much larger than before.
• the present invention provides the tape cassette as described above,
• the front end of the lower end of the rear lid is formed as a slope inclined to the rear fence from the lower end to the upper end.
• the tape cassette is set to be located at a position substantially flush with the rear surface of the unit or at a position retracted backward from the lower rear surface.
• the upper end corner of the front end surface of the lower end of the rear lid can be moved far away from the magnetic tape by a large distance, so that the upper end corner can be moved.
• the gap between the top corner and the magnetic tape can be much larger than before. Therefore, it is possible to prevent the upper end corner portion of the lower end portion front end surface of the rear lid from coming into contact with the magnetic tape and the magnetic tape from being inserted when the rear lid is closed.
• Fig. 1 is an exploded perspective view illustrating a conventional tape cassette for a video tape recorder ⁇
• Fig. 2 is an enlarged vertical sectional side view of the same as above
• Fig. 3 is an enlarged vertical sectional view of a main part of the same. It is.
• FIG. 4 to 6 show an embodiment of a tape cassette for a video tape recorder to which the present invention is applied.
• FIG. 4 is an enlarged vertical cross-sectional view of a main part
• FIG. FIG. 6 and FIG. 6 are enlarged vertical sectional side views similar to FIG. 4 showing a modification.
• FIG. 4 to 6 The same components as those of the conventional example shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof is omitted.
• the front end face of the lower end 5a of the rear lid 5 is provided.
• an inclined surface 28 inclined rearward from the lower end to the upper end at an angle is formed over the entire length of the rear cover 5 in the longitudinal direction (left-right direction). As shown by the imaginary line when the lid is closed, the lower end of the inclined surface 28 is formed by a notch provided
• the upper end corner portion 29 of the inclined surface 28 is in contact with the lower rear surface 4 of the front cover 4 at the upper end of the notch 26 in a substantially flush state.
• the angle has an inclination of 10 1 to 30 ⁇ with respect to the lower surface 4b of the lower end of the front lid 4.
• the closing of the rear cover 5 is performed in the same manner as in the related art.
• the lower end portion 5a of the Due to the inclined surface 28 previously formed on the front end surface 25, the upper end corner portion 29 of the front end surface 25 of the lower end portion 5a of the rear lid 5 and the magnetic chip 8 have a very large separation distance of £ 2. become. Therefore, it is possible to prevent the upper end corner portion 29 from contacting the magnetic tape 8 and to prevent the magnetic tape 8 from being inserted.
• the inclined surface 28 according to the present invention can be variously modified in addition to the above. That is, FIG. 5 and FIG. 6 show these modified examples.
• the notch is omitted from the rear surface 4b at the lower end of the front lid 4, and the inclined surface 28 is formed at the front end surface 25 of the lower end 5a of the rear end 5, and the upper end corner portion 2 is formed.
• 9 is the position where it has been retracted backward from the back 4b of the lower end of the front lid 4.
• the lower end of the front lid 4 is made to contact the lower end of the lower surface 4b. According to this modification, the difficult distance 2 between the upper end corner portion 29 of the front end surface 25 of the lower end portion 5a of the rear lid 5 and the magnetic tape 8 can be increased.
• the front end face 25 of the lower end portion 5a of the rear lid 5 has an inclined surface 28 formed at the upper end of the front end face 25.
• the front end face 25 is left in a vertical plane state with the lid open, so that when the lid is closed, the front end face 25 is in close contact with the lower rear surface 4 b of the front lid 4.
• the dustproof effect is further improved.
• the present invention can be applied to tape cassettes for various recording / reproducing devices other than video tape recorders and other various information processing devices.
• the separation distance between the upper end corner portion of the rear lid and the magnetic tape can be made much larger than before. Therefore, it is possible to prevent the upper end corner portion of the lower end front end surface of the rear lid from contacting the magnetic tape or inserting the magnetic tape when the rear lid is closed. Moreover, when the lid is closed, the dust-proof effect of the sealed tape force set is not lost at all.

Landscapes

• Casings For Electric Apparatus (AREA)
• Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=14923970

Family Applications (1)

Country Status (6)

Families Citing this family (6)

Citations (1)

Family Cites Families (5)

• 1983
  • 1983-08-12 JP JP1983125989U patent/JPS6035377U/ja active Granted
• 1984
  • 1984-08-10 DE DE8484903088T patent/DE3482833D1/de not_active Expired - Lifetime
  • 1984-08-10 WO PCT/JP1984/000400 patent/WO1985000919A1/ja active IP Right Grant
  • 1984-08-10 US US06/719,250 patent/US5023740A/en not_active Expired - Lifetime
  • 1984-08-10 EP EP84903088A patent/EP0151649B1/en not_active Expired
• 1994
  • 1994-07-28 HK HK74294A patent/HK74294A/xx not_active IP Right Cessation

Patent Citations (1)

Non-Patent Citations (1)

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