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
  • G11B23/023—Containers for magazines or cassettes
  • G11B23/0233—Containers for a single cassette

Definitions

• the present invention relates to a protective case for a tape cartridge, and has an improved case shape suitable for portable use.
• the cross section of the side wall of the protective case 1 is formed as shown in FIG. 2, and not only the corner of the side wall but also the entire outer surface thereof is formed in one semi-circular shape. It is conceivable that the inside surface of the case is left flat to secure the inside dimensions of the case. However, this has the disadvantage that the outer diameter of the case becomes larger by a, and the case cannot be stored in the rearranging box when not in use.
• the present invention has been made to solve such a problem, and has been devised by elaborating a method of rounding the outer surface of the side wall of the protective case.
• the purpose is to obtain a protective case that is convenient for carrying without lowering the case strength and enlarging the external dimensions.
• the outer surface of the cross section of at least one of the front, rear, left and right side walls 6, 7, 8, 9 of the rectangular protective case. 20 is an arc formed by connecting a plurality of outer convex arcs 21 and 22 having different curvatures.
• the side wall of which outer surface 20 is formed in an outwardly convex bow shape does not catch on the inner surface of the pocket ⁇ interior material of the pack, etc. It fits smoothly and does not damage it.
• the arcuate outer surface 20 is formed by combining a plurality of arcs 21 and 22 having different curvatures, it is possible to reduce the wall thickness of the corner without thinning the corner of the side wall as in the case of simply cutting off the corner.
• the entire outer surface of the side wall is formed in a semicircular shape drawn with the same curvature, the case outer dimension does not increase.
• FIG. 1 is an enlarged sectional view of a part of a conventional protective case.
• FIG. 2 is an enlarged sectional view of a part of a protective case showing a comparative example with the present invention.
• 3 to 7 show one embodiment of the protective case according to the present invention.
• Fig. 3 is an enlarged sectional view of the main part
• Fig. 4 is an overall cross-sectional plan view
• Fig. 5 is an overall longitudinal side view
• Figure 6 is a perspective view with the lid open
• FIG. 7 is a partially broken plan view showing a state where a lid is opened.
• FIG. 8 is an enlarged sectional view of a main part showing another embodiment of the present invention.
• FIGS. 3 to 7 show one embodiment of the protective case of the tape cartridge according to the present invention.
• the protective case 1 is composed of a square plastic case body 2 and a plastic lid 3 formed in a square shape. With the lower side wall 4 and the upper side wall 5, the front side wall 6 and the rear side wall 7, and the right and left side walls 8 and 9 facing each other with the lid 3 closed, the tape cartridge 10 A space is formed.
• the case body 2 is formed integrally with a case bottom wall 4 a constituting the front part of the lower side wall 4, a front wall 6 and right and left side walls 8, 9 erected from these three peripheral edges.
• a pair of left and right locking members 12 protrude from the inner surface of the housing. The locking member 12 engages with the tape winding hub 14 through the drive shaft insertion hole 13 of the tape cartridge 10 to allow the hub 14 to rotate freely during storage. Block.
• the lid 3 has an upper side wall 5 that closes the upper surface of the opening of the case main body 2, and a pocket 15 into which the tape cartridge 10 is inserted is formed integrally with an inner surface of a side edge thereafter.
• Pocket 15 is perpendicular to the rear edge of upper wall 5 Formed by a continuous rear wall 7, a pocket bottom wall 4 b continuously forming the rear of the lower wall 4 at right angles to the rear wall 7, and pocket side walls 16, 17 closing right and left thereof. Is done.
• the lid 3 and the case body 2 can swing open and close with each other via a shaft support structure 18 provided between the left and right side walls 8 and 9 of the case body 2 and the pocket side walls 16 and 17.
• a shaft support structure 18 provided between the left and right side walls 8 and 9 of the case body 2 and the pocket side walls 16 and 17.
• shafts are protruded from the inner surfaces of the left and right side walls 8 and 9 so as to face each other, and the shafts are supported by bearing holes that pass through the left and right pocket side walls 16 and 17.
• each of the front side wall 6 and the rear side wall 7 is such that each outer surface 20 is formed in an outwardly convex arc shape.
• the arcuate outer surface 20 of the rear wall 7 is formed by a circular arc 21 of a corner continuous with the lower wall 4 and the upper wall 5, respectively.
• 2 1 and an intermediate arc 22 connecting these arcs 2 1 and 2 1 seamlessly form a semi-elliptical shape divided along the major axis.
• the radius of curvature of the arc 21 of the corner is formed as small as possible to secure the thickness of the corner.
• the radius of curvature of the arc 21 of the upper and lower corners may be different from that of the upper and lower corners.
• the radius of curvature of the middle arc 22 is set to several times the radius of curvature of the corner arc 21, for example, 2.5 to 3.5 times, so that the outer surface 20 is outside the case as shown in Fig. 2. To prevent it from protruding significantly. Also, by setting the radius of curvature of the intermediate arc 22 larger than that of the arc 21 of the corner to make it a gentle curved surface, a parting line is set at the maximum protruding part of the arc 22. In this case, the parting line surface is easily stabilized, which is advantageous in preventing the short life of the mold.
• the arc-shaped outer surface 20 of the front side wall 6 is formed into a semi-elliptical shape by combining the arc 21 of the corner and the intermediate arc 22.
• the maximum front-back distance between the front and rear outer surfaces 20 and 20 is the same as the front-rear dimension of the conventional case. Almost matched.
• the distance between the inner surfaces of the front and rear side walls 6.7 also matches that of the conventional case.
• the arcuate outer surface 20 is formed by a combination of the circular arc 21 of the corner and the intermediate circular arc 22.
• the number of combinations of the circular arcs 21 and 22 having different curvatures is not particularly limited.
• a radius is also attached to the 'inner corner' of the corner, but this inner radius is not necessarily required.
• thinner concave portions 24 are formed on the inner surfaces 6a and 7a at the maximum thickness portions of the front wall 6 and the rear wall 7, respectively. This is more preferable because the wall thickness can be made uniform and distortion due to shrinkage difference caused during cooling due to uneven thickness can be eliminated.
• the cross-sectional shape of the left and right side walls 8, 9 can also eliminate corners from the case body if the outer surface 20 is formed in an outwardly convex bow shape.
• only one of the front and rear left and right side walls 6, 7, 8, 9 needs to be formed in such a sectional shape.
• the title display surface of the index card is folded into the inner surface of the rear side wall 7 facing the socket 15 in the above embodiment. Therefore, the rear side wall 7 acts as a lens by the arc portion of the outer surface 20, making it easy to read the title display even from the lateral side, and even in a situation where many protective cases 1 are stored. This is advantageous in that more title displays can be searched from a certain position.
• the protective case 1 can be similarly applied to a case in which the case body 2 and the lid 3 are integrally formed by connecting the case body 2 and the lid 3 with a thin integrated molding hinge.
• the present invention can be similarly applied to a protective case for storing a VHS-C type tape cartridge or the like.
• a protective case for storing a VHS-C type tape cartridge or the like As described above, according to the rectangular protective case of the present invention, at least one of the front and rear left and right side walls 6, 7, 8 and 9 has a cross-sectional shape of one side wall, and the outer surface 20 has an outer convexity. Because it is shaped like a bow, it is easy to put it into a pocket or pack through the side wall with its outer surface 20 when carrying it, and those interior materials and other items may be damaged by the protective case 1. Can be eliminated.
• the outer surface 20 is formed in an arc shape by combining a plurality of arcs 21 and 22 having different curvatures, the thickness of the corner can be secured to prevent a decrease in case strength, and the outer size of the case can be reduced. This is advantageous because it can be prevented from expanding and can be easily stored in conventional sorting boxes.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=14699187

Family Applications (1)

Country Status (3)

Citations (2)

Family Cites Families (4)

• 1989
  • 1989-10-03 JP JP11692989U patent/JPH0356589U/ja active Pending
• 1990
  • 1990-10-03 EP EP19900914761 patent/EP0447557A4/en not_active Withdrawn
  • 1990-10-03 WO PCT/JP1990/001274 patent/WO1991004927A1/ja not_active Application Discontinuation

Patent Citations (2)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events