JP2005350125A - Storing case for tape cassette - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storing case for a tape cassette capable of preventing a lock from being unlocked when the case falls, and easily performing the locking operation to engage a lid part with a storing part. <P>SOLUTION: The storing case comprises a storing part 11 to store a magnetic tape cassette C, a lid part 12 having outer plates 13, 14 and 15 surrounding the storing part 11, a hinge plate part 16 to connect the lid part 12 to the storing part 11 in an opening/closing manner, an engagement part 36 formed on an outer side face of the outer plate 13 of the lid part 12, a lock piece base end part 42 formed on an end edge part opposite to the hinge plate part 16 at the storing part 11, and a lock piece 17 which is supported by the lock piece base end part 42 and can be engaged with the engagement part 36. The lock piece base end part 42 is recessed more on the storing part 11 side than other portions of an end edge part 40. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a tape cassette storage case used for storing and protecting a magnetic tape cassette at a broadcasting station.

  In general, a tape cassette used in a broadcasting station is larger and heavier than a commercially available video tape cassette or the like. Therefore, when the tape cassette is dropped, the impact on the tape cassette is great, which causes damage to the tape cassette. For this reason, in order to prevent the tape cassette from being damaged by an impact, the tape cassette is stored in a dedicated synthetic resin storage case during storage or transport.

  As an example of such a conventional tape cassette storage case, a tape cassette storage case including a storage portion, a lid portion, and a hinge portion is known (see, for example, Patent Document 1).

FIG. 4 is a diagram showing a conventional tape cassette storage case.
As shown in FIG. 4, the conventional tape cassette storage case 70 has a hard type case body, and the case body includes a storage portion 71 having four side walls 72, a lid portion 73 having three side walls 74, The bottom plate 75 of the storage portion 71 and the top plate 76 of the lid portion 73 are connected by hinges 77 and 78, and a connecting portion 79 that becomes one side wall of the lid portion 73 when the lid portion 73 is closed.

  Inside the lid portion 73, side wall lock portions 80 having flanges 81 are formed at both ends of the side wall 74 on the front side opposite to the connecting portion 79. When the lid portion 73 is closed, the flange portion 81 is locked in a locking hole 82 formed in the side wall 72 of the storage portion 71.

  Further, the tape cassette storage case 70 is provided with a side lock portion 84 on the front side opposite to the connecting portion 79 so as to be connected to the outer peripheral edge portion 83 via a hinge. The side lock portion 84 is connected to the bottom plate 75 of the storage portion 71 and is provided with a flap plate 85. When the side lock portion 84 is overlapped with the side wall 74 of the closed lid portion 73, the side lock portion 84 is formed on the flap plate 85. The portion 86 is locked by being locked to a locking portion (not shown) on the outer surface of the side wall 74 of the lid portion 73.

JP 2002-179176 A

  However, in the tape cassette storage case 70, when the tape cassette storage case 70 with the side lock portion 84 locked is dropped, the impact is applied to the boundary portion between the outer peripheral edge portion 83 and the side lock 84, and the side In some cases, the lock 84 bends, the side lock portion 84 is disengaged from the engaging portion, the stored magnetic tape cassette pops out, and the magnetic tape cassette is damaged.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a storage case for a tape cassette that can prevent the lock from being released when dropped.

  The object of the present invention is to provide a storage unit for storing the magnetic tape cassette, a lid unit having an outer plate surrounding the storage unit, a hinge plate unit for connecting the lid unit to the storage unit so that the lid unit can be opened and closed, and the lid. An engaging portion formed on an outer surface of the outer plate of a portion, a lock piece base end portion formed on an end edge portion of the storage portion opposite to the hinge plate portion, and a hinge on the lock piece base end portion A lock piece that is supported via a portion and engageable with the engagement portion, and that the lock piece base end portion is recessed toward the storage portion side from the other part of the end edge portion. This is achieved by the storage case for the tape cassette.

  According to the tape cassette housing case described above, the lock piece base end portion formed at the end edge portion of the storage portion is provided at a position recessed toward the storage portion side from the other part of the end edge portion. Then, even when an impact is applied to the end edge portion when the tape cassette storage case in which the lock piece is locked to the engaging portion falls, it can be prevented from being directly applied to the base end portion of the lock piece. . For this reason, it can prevent that a lock piece bends by the impact of a fall, and can prevent that a lock piece remove | deviates from an engaging part.

  In the tape cassette storage case, it is preferable that the lock piece base end portion is formed by chamfering a part of the end edge portion of the storage portion. Moreover, it is preferable that the lock piece base end part is formed by providing a step in a part of the end edge part of the storage part.

  If it carries out like this, a lock piece base end part can be provided in the position which escaped to the accommodating part side by simple structure. Moreover, according to such a structure, it can avoid that an undercut arises when integrally forming the storage case for tape cassettes with a metal mold | die.

  ADVANTAGE OF THE INVENTION According to this invention, the storage case for tape cassettes which can prevent that a lock | rock is removed at the time of dropping can be provided.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of a tape cassette storage case according to the present invention. FIG. 2 is a cross-sectional view of the tape cassette storage case shown in FIG.

  As shown in FIG. 1, the tape cassette storage case 10 includes a storage portion 11 that stores the magnetic tape cassette C, a lid portion 12 having outer plates 13, 14, and 15 surrounding the storage portion 11, and a storage portion 11. And the hinge board part 16 which connects the cover part 12 so that opening and closing is possible, and the lock piece 17 movably connected with respect to the accommodating part 11 via the hinge part 18 are comprised by integral molding. The tape cassette storage case 10 is molded from a polymer resin such as polypropylene (PP).

  Peripheral plates 20, 21, 22 and 23 are provided upright on the outer edge portion of the bottom plate 19 of the storage unit 11 so as to surround the periphery. The peripheral plate 20 is arranged on the front side of the storage unit 11, the peripheral plate 21 is arranged on the back side of the storage unit 11, and the peripheral plates 22 and 23 are arranged on the left and right side sides of the storage unit 11. Concave portions 24, 25, 26, and 27 are formed in the center portions of the peripheral plates 20, 21, 22, and 23, respectively, so as to be cut out so as to be low in height.

  In the storage portion 11, a pair of reel locking ribs 28 are formed in the center portion of the bottom plate 19. The reel locking rib 28 has a cylindrical shape divided into a plurality of circumferential directions by slits. By inserting a take-up hub (not shown) of the magnetic tape cassette C into the reel locking rib 28, the magnetic tape cassette C is positioned in the storage portion 11.

  In the storage portion 11, first engaging portions 30 are formed on both sides of the recess 24 on the front surface of the peripheral plate 20. First locking portions 31 are formed at both inner surface side ends of the outer plate 13 positioned on the hinge plate portion 16 side. When the lid portion 12 is closed, the first engaging portion 30 and the first locking portion 31 are configured to engage with each other.

  On the lid 12, outer plates 13, 14, 15 arranged on the outer edge of the top plate 32 so as to surround three sides are formed upright on the top plate 32. The outer plate 13 is formed so as to be positioned in front of the storage unit 11 in a state where the cover 12 is covered with the storage unit 11, and the outer plates 14 and 15 are formed so as to be positioned on both side surfaces of the storage unit 11. .

  The lid 12 is formed with a rectangular boss 33 having a high height in the shape of a rectangular column on the inner side of the opposed outer plates 14 and 15. When the lid portion 12 is closed with respect to the storage portion 11, the square boss 33 is interposed between the outer side surfaces of the peripheral plates 22 and 23 of the storage portion 11 and the inner side surfaces of the outer plates 14 and 15 of the lid portion 12. It is provided so that it may be located, and it guides so that the closed cover part 12 may become an appropriate position.

  A second engaging portion 36 is formed in the lid portion 12 at the substantially outer center of the outer plate 13. The second engagement portion is engaged with a second locking portion 44 of the lock piece 17 described later.

  The hinge plate portion 16 is formed in a plate shape between the storage portion 11 and the lid portion 12. Hinges 34 and 35 are formed on the edge of the hinge plate portion 16 that is connected to the storage portion 11 and the lid portion 12. One hinge 34 is connected to one side of the bottom plate 19 of the storage portion 11, and the other hinge 35 is connected to one side of the top plate 32 of the lid portion 12.

  A plate-like lock piece 17 having a trapezoidal shape is connected to the approximate center of the end edge portion 40 of the peripheral plate 20 of the storage portion 11.

  As shown in FIG. 2, an end edge portion 40 projects from the peripheral plate 20 of the storage portion 11 along the outer surface of the lower end portion. At an approximate center of the end edge portion 40, there is an extended portion 41 extending horizontally from the approximate center, and an angle of approximately 45 ° obliquely upward to the left from the distal end portion (left end portion in FIG. 2) of the extended portion 41. And a locking piece base end portion 42 standing upright.

  In the present embodiment, the lock piece base end portion 42 has an outer surface which is chamfered so as to be inclined at an angle of about 45 ° to the left and is stored in the storage portion from the other portion 43 in the end edge portion 40 of the peripheral plate 20. It is set as the structure dented to 11 side.

  The lock piece 17 is connected to the end of the lock piece base end portion 42 opposite to the extending portion 41 via the hinge portion 18. As shown by the arrow R in FIG. 2, the lock piece 17 can be tilted so as to be folded toward the peripheral plate 20 side. A second locking portion 44 that is engaged with the second engagement portion 36 of the lid portion 12 is formed at the distal end portion of the lock piece 17 in a state of being folded toward the peripheral plate 20 side.

  In the tape cassette storage case 10, the lid 12 is closed with respect to the storage portion 11 in the direction of the arrow in FIG. 1, whereby the first engagement portion 31 is engaged with the first locking portion 32. 1, the lock piece 17 is further raised upward in FIG. 1 via the hinge portion 18, whereby the second locking portion 44 of the lock piece 17 becomes the second engagement of the lid portion 12. This is a so-called double-locking structure that engages and locks the joint.

  In the tape cassette storage case 10 of this embodiment, the lock piece base end portion 42 of the end edge portion 40 of the storage portion 11 to which the lock piece 17 is coupled is stored with respect to the other portion 43 in the end edge portion 40. It is comprised so that it may become depressed on the part 11 side. Then, when the tape cassette storage case 10 falls in a state where the lock piece 17 is locked to the engaging portion 36 of the lid portion 12, an impact in the direction indicated by the arrow B in FIG. Even so, it is possible to prevent the lock piece base end portion 42 from being directly applied. For this reason, it is possible to prevent the lock piece 17 from being bent due to the impact of the drop, and to prevent the lock piece 17 from being detached from the engaging portion 36. Therefore, it is possible to make it difficult for the lock to be released at the time of dropping, and it is possible to prevent the magnetic tape cassette C from jumping out of the storage portion 11 and being damaged.

FIG. 3 is a cross-sectional view around the lock piece showing the second embodiment of the tape cassette storage case according to the present invention.
As shown in FIG. 3, in the tape cassette storage case 50, the end portion 60 of the peripheral plate 20 has a vertical portion 61 erected substantially vertically upward from the end portion of the extending portion 51, and a vertical portion. A horizontal portion 62 extending horizontally from the upper end portion of 61 is formed. The lock piece 17 is connected to the end portion of the horizontal portion 62 opposite to the vertical portion 61 via the hinge portion 18. In the tape cassette storage case 50 of the present embodiment, the vertical portion 61 and the horizontal portion 62 constitute a lock piece base end portion.

In the end edge portion 60, a step having a concave shape in cross section is formed inside the storage portion 11 by the vertical portion 61 and the horizontal portion 62, and the vertical portion 61 and the horizontal portion 62 are formed in the end edge portion 60 of the peripheral plate 20. The other part 63 is provided at a position to escape to the storage part 11 side.
Other configurations and operations are the same as those in the first embodiment.

  Specifically, in the tape cassette storage case 50 of the present embodiment, the end edge portion 60 of the storage portion 11 is formed as a step having a concave shape inside the storage portion 11 by the vertical portion 61 and the horizontal portion 62. The vertical portion 61 and the horizontal portion 62 are formed so as to be recessed toward the storage portion 11 with respect to the other portion 63 in the end edge portion 60 of the peripheral plate 20.

  Therefore, even if the tape cassette storage case 50 is dropped while the second engaging portion 44 of the lock piece 17 is locked to the second engaging portion of the lid portion 12, the impact of the drop is stored. Direct application to the vertical portion 61 and the horizontal portion 62 of the portion 11 can be prevented. For this reason, the impact of the drop is not transmitted to the lock piece 17, and the lock piece 17 can be more reliably prevented from being detached from the second locking portion 44 due to the bending of the lock piece 17.

In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.
For example, the shape of the lock piece 17 is not limited to the configuration having a trapezoidal shape in plan view as in the above-described embodiment, and may be, for example, a quadrangle or a semicircular shape.

It is an external appearance perspective view of the open state which shows 1st Embodiment of the storage case for tape cassettes which concerns on this invention. It is sectional drawing around the lock piece of the storage case for tape cassettes shown in FIG. It is sectional drawing of the surroundings of the lock piece which shows 2nd Embodiment of the storage case for tape cassettes which concerns on this invention. It is an external view of the open state of the conventional storage case for tape cassettes.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,50 Tape cassette storage case 11 Storage part 12 Cover part 13, 14, 15 Outer plate 16 Hinge plate part 17 Lock piece 18 Hinge part 20 Peripheral plate 40 Edge part 42 Lock piece base end part 43 Edge of peripheral board Other parts in the part 60 Edge part 61 Vertical part 62 Horizontal part C Magnetic tape cassette

Claims (3)

A storage section for storing the magnetic tape cassette;
A lid portion having an outer plate surrounding the storage portion;
A hinge plate for connecting the lid to the storage portion so as to be openable and closable;
An engaging portion formed on the outer surface of the outer plate of the lid portion;
A lock piece base end portion formed on an end edge portion of the storage portion opposite to the hinge plate portion, and a lock that is supported by the lock piece base end portion via a hinge portion and engageable with the engagement portion. With a piece,
The tape cassette housing case, wherein the lock piece base end portion is recessed toward the housing portion side from the other portion of the edge portion.   2. The tape cassette housing case according to claim 1, wherein the lock piece base end portion is formed by chamfering a part of the end edge portion of the housing portion.   The tape cassette storage case according to claim 1, wherein the lock piece base end portion is formed by providing a step in a part of the end edge portion of the storage portion.

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