JPH049332Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a disk cartridge for storing a so-called microfloppy magnetic disk that can be used as a memory for an electronic computer or the like.

BACKGROUND TECHNOLOGY AND PROBLEMS Generally, some microfloppy disk cartridges are provided with means for preventing mistaken erasure of information recorded on the microfloppy disk.

An example of this is shown in FIGS. 1 to 5.

That is, 1 is a case, which, as is well known, has a second half, for example, an upper half 1a and a first half.
For example, a lower half 1b is formed, and a circular hole 2 is formed approximately in the center of the lower half 1b.
Furthermore, insertion holes 3 for pads and heads are formed at mutually opposing positions in the upper and lower halves 1a and 1b. Reference numeral 4 denotes a shutter, which is bent into a U-shape and is fitted onto one side edge of the case 1 so as to be slidable laterally. Reference numeral 5 denotes a window hole formed in the shutter 4, which faces the pad and head insertion holes 3 when the shutter 4 is in the sliding position shown in FIG. In this state, the insertion hole 3 is covered by the shutter 4.

Reference numeral 6 denotes a floppy disk (magnetic disk) housed in the case 1, and a disk 7 made of a magnetic material is attached to the center of the floppy disk. ).

A long hole 8 is formed in the first half (lower half in this example) 1b, and a long hole 8 is formed on one side with respect to the long hole 8 at a position opposite to the long hole 8 on the second half (upper half in this example) 1a. A small hole 9 is formed at a biased position. Walls 10a and 10b surround the elongated hole 8 and the small hole 9, forming the respective halves 1a and 1.
It is formed in b. FIGS. 2 and 3 show this state with each half opened, and the diagonal lines indicate the surfaces facing each other.

Further, the lower half 1b is provided with a large diameter annular outer fitting protrusion 20, and the upper half 1a is provided with a small diameter annular inner fitting protrusion 21 corresponding to the outer fitting protrusion 20.
is provided so that the inner fitting protrusion 21 fits into the circular hole of the outer fitting protrusion 20 when the upper half 1a and the lower half 1b are combined.

Furthermore, semicircular protrusions 12, 12 and 13, 13 are formed on the inner surfaces of the walls 10a and 10b at positions facing each other, and in this case, the wall 10a or 10b between the protrusions 12 and 13 is It is formed into an arc-shaped recess.

Further, as shown in FIG. 4, a mover 14 is provided, which fits exactly into the elongated hole 8 and slides between one position (solid line position) and another position (dashed line position). It is formed from a movable piece part 15 that can be moved, and a leg part 16 that is integrally formed continuously with the movable piece part 15 and is interposed between the upper and lower halves 1a and 1b.

As is clear from FIG. 2, parts of the legs 16 of the movable element 14 are extended so as to face each other and are substantially parallel to each other to form elastic parts 17a and 17b. shaped protrusion 18a, 1
8b is formed.

The lengths of the elastic parts 17a and 17b are
When the mover 14 is moved downward as shown in FIG. 2, it just engages with the pair of protrusions 12, 12 formed on the walls 10a, 10b, respectively, and moves upward as shown by the dashed line in FIG. In the moved state, the protrusion 18a,
18b is adapted to just engage projections 13 and 13 formed on walls 10a and 10b. The inner edge of the long hole 8 in the longitudinal direction is connected to the movable piece 1
It becomes a stopper that collides with the side of 5.

The elastic portions 17a and 17b of the movable element 14 are configured to maintain elasticity biased outward.

In this configuration, the pair of halves 1a and 1b are each formed of a material that can be thermally welded, and the mover 14 is formed of a material that is different from these materials, that is, a material that does not weld with these during thermal welding. When 1a and 1b are combined (welded), the mover 14 is not fixed to the half.

When manufacturing the disk cartridge configured as described above, there is a step of assembling the mover as part of the manufacturing process. The mover 14 is dropped in as shown by the solid line.

Then, the movable element 14 moves to the protrusion 18 on its leg.
a and 18b are biased toward each other by the elastic portions 17a and 17b in the direction of arrow A pointing outward, and engage with the protrusions 13 and 13, respectively.

Next, in this state, it is sent to the next work process by the conveyance device of the automatic assembly machine, and the upper half 1a is attached to the lower half 1b.
are combined.

However, in the process of sending the lower half 1b with the movable element 14 assembled thereto to the next work site, the movable element 14 may shift from a predetermined position or fall off from the lower half 1b due to vibrations of the conveying device, etc. Ta.

This is because the mover 14 is assembled so as to be temporarily fixed to the lower half 1b only by the protrusions 18a and 18b, so it rotates around the protrusions 18a and 18b and is likely to shift or fall off.

If the mover 14 deviates from a predetermined position or falls off in this manner, it will inevitably cause trouble in the work of combining the upper and lower halves 1a and 1b, and result in the production of defective products.

Purpose of the invention In view of the above-mentioned points, the present invention aims to facilitate the manufacturing work of floppy disk cases by preventing the mover from shifting from the predetermined position of the lower half or falling off during manufacturing. purpose.

Summary of the invention The disk cartridge according to the invention consists of a first half and a second half, including a case for rotatably storing a disk, a long hole formed in a part of the first half, and a second half. The half has a small hole formed at a position opposite to the elongated hole and offset from the elongated hole, and a first position that blocks the small hole and a second position that does not block the small hole in the longitudinal direction of the elongated hole. a movable piece that is movable between positions; a guide wall that guides the movement of the movable piece; and a movable piece that is integrally formed with the movable piece, has elasticity, and is biased against the guide wall. a protrusion provided on the guide wall that engages with a protrusion of the leg for positioning the movable piece between the first and second positions; When manufacturing a disc cartridge, which is provided with a rib provided on the inner surface of the half, and which temporarily fastens the legs by sandwiching the legs between the legs and the guide wall, it is possible to move the disk cartridge due to vibrations such as during transport. This prevents the child from shifting or falling off from the predetermined position where the half is temporarily fastened, and allows for smooth manufacturing work.

Embodiment Hereinafter, an embodiment of the disk cartridge according to the present invention will be described with reference to FIGS. 6 and 7.

Note that in FIGS. 6 and 7, parts corresponding to those in FIGS. 1 to 5 are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

FIG. 6 shows a first embodiment, in which a large-diameter annular external fitting protrusion 20 is provided inside the lower half 1b surrounded by the wall 10b. Further, plate-shaped temporary fixing ribs 22, 22 each having a predetermined length and having a semicircular free end are provided on both lateral parts of the external fitting protrusion 20 in the drawing.

When the movable element 14 is assembled into the lower half 1b, the protrusions 18a and 18b of the leg portions are urged in the direction of arrow A pointing outward from each other by the elastic parts 17a and 17b, respectively, and the protrusions 13 and 13, respectively, engage.

In addition, each elastic part 17 which is a leg part
The center portions 23 of the elastic portions 17a, 17b are pressed against the temporary fixing ribs 22, respectively, and the elastic portions 17a, 17
b is curved outward in a convex shape, and the protrusions 18a, 1
8b is urged more strongly to engage the protrusions 13, 13.

That is, the mover 14 is temporarily fixed to the lower half 1b so as to be supported by the protrusions 18a, 18b, which are the legs, and the central portions 23 of the elastic parts 17a, 17b.

Therefore, if the mover 14 tries to rotate around the protrusions 18a and 18b due to some vibration during transportation to the next assembly process, the mover 14 will be held down by the temporary fixing ribs 22, and the mover 14 will move around the lower half 1b. It will not shift from the temporarily fixed predetermined position or fall off, and will not interfere with the disk cartridge manufacturing operation.

Next, the second embodiment shown in FIG. 7 will be described. In this example, the protrusions 13, 13 provided at positions facing each other on the inner surface of the wall 10b of the lower half 1b are more precise than in the case shown in FIG. The protrusions 18a, 18b of the mover 14 are formed one step higher, and the protrusions 13, 13 are formed one step higher.
It is formed to engage with the section 8b.

Furthermore, the inner center portions 23 of the elastic portions 17a and 17b facing each other are thickly raised to form a wall that is shorter than the embodiment shown in FIG. It is formed so as to be pressed against the formed temporary fixing ribs 22, 22.

In this case as well, the mover 14 has its protrusions 18a, 1
8b portion and the central portion 23 of the elastic portions 17a, 17b
The movable member 14 is temporarily fixed to the lower half 1b so as to be supported by the movable member 14, and vibrations during transportation may cause the mover 14 to shift from the predetermined position where it is temporarily fixed on the lower half 1b or fall off. There isn't.

Furthermore, since the temporary fixing rib 22 is short, the protrusion 1
3, 13 and the protrusions 18a, 18b, the elastic parts 17a, 17 are attached to the temporary fixing rib 22.
b does not come into contact with each other, and the movement of the movable element 14 can be made smooth.

Effects of the Invention According to the disk cartridge of the present invention as explained above, when manufacturing the disk cartridge, one half is attached so that the mover is supported by the protruding portion of the leg and a part of the leg. Since it can be temporarily fastened to the half, it is possible to prevent the mover from shifting or falling off from the predetermined position where it was temporarily fastened on one half due to vibrations during transportation during the manufacturing process, making the manufacturing work smoother. The effect is that it can be done.

[Brief explanation of drawings]

Figure 1 is a perspective view showing an example of a conventional disk cartridge, Figure 2 is a front view showing the main parts of the lower half, Figure 3 is a front view showing the main parts of the upper half, and Figure 4 is a front view showing the main parts of the upper half. FIG. 1 is a cross-sectional view taken along the line in FIG. 1, FIG. 5 is a cross-sectional view taken along the line taken in FIG. FIG. 2 is a front view of main parts showing a second embodiment of the invention. 1a and 1b are upper and lower halves, 10a and 10b are walls formed in each half, 12 and 13 are protrusions, 14 is a mover, 17a and 17b
is an elastic portion, 18a and 18b are protrusions, and 22 is a temporary fixing rib.

Claims (1)

[Claims for Utility Model Registration] A case consisting of a first half and a second half for rotatably housing a disk;
The half has a small hole formed at a position facing the long hole and offset with respect to the long hole, a first position that blocks the small hole in the longitudinal direction of the long hole, and a second hole that does not block the small hole. a movable piece that is movable between positions; a guide wall that guides the movement of the movable piece; and a guide wall that is integrally formed with the movable piece and has elasticity;
a leg that biases against the guide wall; a protrusion provided on the guide wall that engages with a protrusion of the leg for positioning the movable piece between the first and second positions; A disk cartridge comprising: a rib provided on the inner surface of the first or second half to sandwich the leg portion with the guide wall for temporary fixation.