JPH029071A - Disk cartridge and shell stocker - Google Patents

Abstract

PURPOSE:To prevent the generation of a deformation even if many shells are piled by providing three pieces of projections to match a part for making the apes of a roughly regular triangle or a roughly isosceles triangle in the vicinity of the outer edge of the inside surface of the shell generated by injection molding. CONSTITUTION:A projection 8 for piling is provided on about the center of a front edge of a shell 1 for forming a card-like case of a floppy disk. The projections 2, 3 and 8 are provided so as to be positioned in the apex of a roughly regular triangle or a roughly isosceles triangle, and as for the projections 2, 3, the projection for ultrasonic welding is used as it is. The projection 8 is formed so as to be higher by about 0.05-0.2mm than projections 4, 5 of both sides thereof, so tht the next shell placed thereon does not hit against the projections 4, 5 but always hits against the projection 8. Also, on a stocker on which the shell is piled, receiving parts 9, 10 and 11 projected in positions corresponding to the projections 2, 3 and 8 of its bottom 7 are provided. In such a way, even if many shells are piled, the generation of a deformation can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disk cartridge comprising a disk-shaped information recording medium rotatably housed in a card-shaped box.

2. Description of the Related Art Disk cartridges of this type include 3-inch and 3.5-inch floppy disks that record magnetic signals, and compact disks that record optical signals. These disk cartridges have an information storage medium rotatably housed in a thin, flat box-like, card-like box made of a pair of upper and lower shells manufactured by injection molding using plastic such as ABS resin. Protected from dirt, contamination, and damage.

As an example of such a disk cartridge, a shell as shown in FIG. 3 has conventionally been used for a 3.6-inch floppy disk.

In FIG. 3, 1 is a schematic perspective view showing one of a pair of shells constituting the box, and the inner surface of shell/I/1 has projections for ultrasonic welding with the other shell. 2
, 3, 4.5 are provided at approximately the four corners of shell/L/1. The shells 1 are manufactured by injection molding, and usually 10 to 30 shells are stacked in a stocker 6 as shown in FIG. 4 and sent to the assembly process.

Problems to be Solved by the Invention However, in such a conventional configuration, if the bottom of the stocker 6 is warped or if individual shells are twisted, the shells are thin and have low rigidity, making it difficult to stack them. Sometimes things at the bottom of the shell became deformed.

When a disk cartridge is assembled using such a deformed shell, there is a problem that not only is it difficult to assemble, but the finished product also has curls and twists, resulting in a rejected product.

The present invention aims to solve these problems and provide a disk cartridge with less deformation.

Means for Solving the Problem In order to solve this problem, the disk cartridge of the present invention has three vertices located near the outer edge of the inner surface of the shell, corresponding to the three vertices of a substantially equilateral triangle or a substantially isosceles triangle. It is equipped with a protrusion.

Function After the shell is formed with this configuration, the three protrusions that are stacked one after another will receive the upper shell one after another, so even if the individual shells are warped or twisted, the shells will not be damaged. This will not affect the shell.

In addition, by providing a protruding receiving portion on the bottom of the stocker corresponding to the three protrusions mentioned above, the shells stacked in the stocker will not be affected by deformation such as warping of the bottom of the stocker. Become.

Embodiment FIG. 1 is a schematic perspective view showing one of a set of shells forming a card-like box of a 3.5-inch floppy disk according to an embodiment of the present invention.

Hereinafter, parts corresponding to those in the conventional example will be explained using the same numbers. In FIG. 1, a protrusion 8 for stacking is provided approximately in the center of the front (far side in the figure) edge of the shell/l/1. The protrusion 2°3.8 is located approximately at the apex of an equilateral triangle or an isosceles triangle. As the protrusions 2 and 3, conventional protrusions for ultrasonic welding can be used as they are.

The protrusion 8 is also formed to be about o,06 to 0,2QIII+ higher than the protrusions 4 and 6 on both sides. It is made to be true.

Further, the stocker in which the shells 1 are stacked has protrusions 2, 3.8 of the shells on the bottom 7, as shown in FIG.
A protruding receiving portion 9°10.11 is provided at a position corresponding to the position.

Therefore, when shells 1 are stacked on such a stocker 6, all the shells are received by the stocker or other shells in the area of the projections 2, 3.8, and with it the other shells in the same area. Since the points that receive this load are located at positions corresponding to the vertices of a triangle with a relatively large area, and there are three points, even if there is deformation such as twisting or warping, it will affect the pond's shear μ. There is no effect on the

Effects of the Invention As described above, according to the present invention, a large number of thin and low-rigid shells can be manufactured by simply providing stacking protrusions on the shells and providing receiving portions on the striker to correspond to the protrusions provided on the shells. The effect is that no deformation occurs even when stacked.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an outline of the shell/V of a disk cartridge according to an embodiment of the present invention, FIG. 2 is a perspective view showing the bottom of the stocker, FIG. 3 is a perspective view showing a conventional shell, and FIG. FIG. 4 is a perspective view showing a conventional stocker. 1...Shell, 2,3.8...Protrusion-
6...Stocker, 9. IQ, 11...mark/reception part. Name of agent Patent attorney Toshio Nakao and 1 other person Compiled drawings/-Shell 2, 3.8--Protrusion 6--Stocker drawing Fig.

Claims (2)

[Claims] (1) A disk cartridge in which a thin disc-shaped recording medium is rotatably housed in a card-shaped box formed by a pair of upper and lower shells, and the shell is manufactured by injection molding and is attached to the outer edge of the inner surface. A disk cartridge with three protrusions that correspond to the vertices of a nearly equilateral or isosceles triangle. (2) A shell stocker for disk cartridges, in which the injection-molded shells of the disk cartridges according to claim 1 can be stacked, and the bottom is provided with three protruding receiving portions at positions corresponding to the three protrusions of the shells.