JPS6040456Y2 - case - Google Patents

Description

[Detailed description of the invention] This invention relates to a new case mainly used for packing cassette tapes, video tapes, etc., but originally the bottom plate was attached to the lower edge of the spine via a bendable part. Similarly, the plates are connected to each other via a bendable part on the upper edge, and the inner surface of the bottom plate is made of a dish-shaped case body formed by press-drawing of synthetic resin material, and the inner surface of the plates is made of synthetic resin material. A case in which a dish-shaped lid frame formed by pressure drawing is placed and fixed, and a fitting protrusion and a fitting concave edge are provided on the opening edges only at the front and both sides of the case body and the lid frame. Compared to the case body and lid frame with a fitting protrusion and a fitting concave edge on the four opening edges of the case body and lid frame, when closing the case body and lid frame, the entire periphery It is easy to operate as there is no need to align the openings and it is sufficient to simply align the edges on three sides, but on the other hand, when the lid frame is pressed toward the front of the case body, it moves in the same direction and the two opening edges do not fit together. It had the disadvantage that it easily came off.

The purpose of the present invention is to eliminate such defects in the case of the three-sided opening edge fitting type, and the illustrated embodiment has a bottom part 20, a back part 21, and a lid part that are continuous through the bent line. A thermoplastic synthetic resin outer sheet 23 is brought into contact with the lower surface of the cardboard core formed from the cardboard core 22, and a thermoplastic synthetic resin inner sheet 24 is brought into contact with the upper surface of the back portion 21, and separately from this, a thermoplastic synthetic resin plate is pressed. A dish-shaped case body 6 that is molded and integrally has an outward flange 25 around the entire lower edge.
and a lid frame body 7, the case body 6 is placed on top of the bottom part 20, the lid frame body 7 is placed on top of the lid part 22, and its outward flanges 25, 25 are placed on both side edges of the inner sheet 24. After placing the outward flange 25.25 and the peripheral edge of the outer sheet 23, the portion corresponding to the outward flange 25.25 and both side edges of the inner sheet 24, as well as both ends of the inner sheet 24. The edge and the portions corresponding to both edges on the peripheral edge of the outer sheet 23 are welded together using a welder, and during the above-mentioned press-drawing process, the opening edge 8 of only the front and both sides of the case body 6 and the lid frame 7 is formed. 9 is the fitting protrusion 1 of the inro-ketsu
0 and a fitting concave edge 11 are provided, a notch 12 is provided in the fitting protrusion 10, and a notch 12 is provided in the opening edge 8 provided with the fitting protrusion 10.
A concave notch 13 continuous to the concave notch 13 is provided on the bottom surface of the fitting concave edge 11, and a protruding portion 1 that fits into the notch 12 and concave notch 13 when the lid is closed is provided.
4 respectively.

Since the present invention is constructed as described above, when closing the lid, simply connect the three opening edges 9 of the lid frame 7 to the three opening edges 8 of the case body 6.
The operation is not only extremely simple, but also requires the notch 12 in the fitting protrusion 10 and the fitting protrusion 1.
A concave notch 13 continuous to the notch 12 is provided on the opening edge 8 provided with 0,
Furthermore, since the bottom surface of the fitting concave edge 11 is provided with protrusions 14 that fit into the above-mentioned notches 12 and 13 when the lid is closed, the fitting protrusions can be inserted even if a forward pressing force is applied to the lid frame 7. Rim 10
and the fitting concave edge 11 and the protrusion 14 and the notch 12
The fitting with the recess and notch 13 interacts with each other to prevent the lid frame body 7 from shifting forward, and there is no risk that the lid portion and the main body portion may receive external force and cause misalignment. This has the effect of reliably achieving the above-mentioned objective of the present invention.

[Brief explanation of the drawing]

The figure shows an embodiment of the case of the present invention.
2 is a perspective view of the entire device, FIG. 2 is a perspective view showing the lid open state, and FIG. 3 is a sectional view taken along line A-A in FIG. 1. 1... Back plate, 2... Flexible part, 3.
...Bottom plate, 4...Bendable part, 5...
...Lid plate, 6...Case body, 7...
・Lid frame body, 8, 9...Opening edge, 10...
- Fitting protrusion, 11... Fitting concave edge, 12...
... Notch, 13 ... Concavity, 14 ... Protrusion, 30 ... Bottom, 21 ... Back, 22 ...
...Lid part, 23...Outer sheet, 24.
...Inner sheet, 25...Outward flange.

Claims (1)

[Scope of utility model registration request] A bottom plate 3 is connected to the lower edge of the back plate 1 via a bendable part 2, and a printing plate 5 is connected to the upper edge of the back plate 1 via a bendable part 4, and a synthetic resin material is applied to the inner surface of the bottom plate 3. A dish-shaped case body 6 formed by drawing and forming, and a dish-shaped lid frame 7 formed by drawing and drawing of a synthetic resin material are placed and fixed on the inner surface of the printing plate 5, and the case body 6 and the lid frame are fixed. A fitting protrusion 10 and a concave fitting edge 11 of the inro-fu are provided on the opening edges 8 and 9 only on the front and both sides of 7, and the fitting protrusion 10 is further provided with a notch 11 and the same fitting protrusion 10. A recess 1 continuous to the notch 12 on the opening edge 8
3, and the above-mentioned notch 1 on the bottom surface of the fitting concave edge 11 when the lid is closed.
2 and a protrusion 14 that fits into the recess 13.