JPS6143724Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a refill container for storing refills for sharpening pencils.

Conventionally, it is known that refills are stored in a bottomed cylinder made of acrylic resin or aluminum, and a lid body is removably fitted to the refills. There are some that are designed to be dispensed and used, and some that are made into disposable containers that store only the number of pencils that can be stored in the lead tank of a sharp pencil.

In general, the latter type is often used, and the number of refills that can be supplied without clogging the lead tank of the sharp pencil is about 4 to 6, but it is not recommended due to product value etc. The container is formed in a shape larger than the space required to store the lead, which increases the cost of the container, and also makes it difficult to replenish the lead tank of the sharp pencil because the container is large. This has disadvantages such as getting your hands dirty and making the structure complicated to make it easier to replenish.

The present invention eliminates these drawbacks and provides a refill container that is particularly suitable for disposable use.

1 and 2 are examples of the present invention.
1 is a base made of a thin metal plate such as aluminum having a thickness of about 0.2 to 0.5 mm.

A bulge 3 is formed on the base 1 by pressure molding, leaving an outer edge 2, and a refill storage chamber 4 having substantially the same external shape as the bulge 3 is formed inside the bulge 3.

The cross section of the refill storage chamber 4 is approximately elliptical, and the longitudinal section in the longitudinal direction is approximately half an ellipse, that is, the shape of a rugby ball cut in half lengthwise, but strictly speaking, it is a sphere with a diameter approximately smaller than the tip. A spherical quadrant 31 that has a shape divided into four parts, a half truncated conical part 32 that has a shape that is roughly cut in half of a truncated cone, a semicylindrical part 33 that has a shape that roughly cuts a cylinder in half, and a spherical quadrant that has a shape that is divided into four parts of a large diameter sphere. A judgment section 34 is provided in series.

A long outer edge 21 is left on the tip side (right side in the drawing) of the bulge 3, and a short outer edge 22 is left flat on the opposite side (left side in the drawing).

This long outer edge portion 21 is useful for providing a hanging portion by perforating it or for adding a graphic design to increase the commercial value.

Without being limited to this embodiment, both ends of the bulging portion 3 have a small-diameter spherical quarter portion 31 and a half-shaped conical portion 32 connected thereto, and a long outer edge portion 21 is connected to both ends of the bulging portion 3. There is no problem even if it is set up,
The end of the bulge 3 connected to the long outer edge 21 is
The shape may be such that both the width and the depth gradually increase toward the other end.

A notch 5 is formed at a suitable location on the end of the bulging portion 3 to reach the core storage chamber 4 in the vertical direction.

The cut 5 is formed to facilitate cutting of the base 1, and is formed at a position where the refill 7 stored in the storage chamber 4 will not be broken during cutting.

Further, the cut 5 is formed to an appropriate depth depending on the material used so that the base 1 can easily cut the refill 7 without breaking it.

8 is a film made of synthetic resin such as vinyl chloride or polypropylene and has a thickness of about 0.01 to 0.5 mm, and is bonded to the outer edge 2 by welding or adhesion, sealing the core storage chamber 4 and allowing the refill 7 to be inserted. This prevents it from falling out of the storage chamber 4.

In use, as shown in Fig. 3, when force is applied in the X direction with the notch 5 as the boundary, the base 1 bends up and down once or about two or three times to form the notch 5. The storage chamber 4 is opened by cutting along the line, and the refill 7 can be easily replenished into the lead tank of the sharp pencil.

At this time, although the substrate 1 is cut, the film 8 is bent without being cut due to its elasticity, so that the cut substrate 1 does not separate and fall off.

Moreover, it goes without saying that a metal film such as aluminum can be used as the film 8.

The present invention is constructed as described above, and since it has the notch 5 that reaches the refill storage chamber 4, it is possible to easily cut the base body 1 without breaking the stored refill 7, and without getting your hands dirty. The core tank can be easily replenished, and since the long outer edge part 21 is connected to at least one end of the bulging part 3, the product value can be improved by providing a hanging part in the perforation or applying a graphic design by printing. Can be done.

Furthermore, it is easy to arrange a plurality of refill containers in series, and in this case, only the required number can be separated and sold. Alternatively, it is convenient because only the required number can be separated and carried, and it can be manufactured at low cost.

The greatest feature of this invention is the structure of the bulge 3 and the ease of molding due to this structure.

To form such a bulge 3 by rolling the thin metal plate P that is the base 1, place the thin metal plate P on the female die F as shown in FIG. The thin metal plate P is pressed with the male die M to form a protruding portion that matches the shape of the male die M and the female die F, but depending on the position of the thin metal plate P, the thin metal plate P is rolled. The conditions are different. That is, the fourth
In the figure, in part A, a large area is firmly pressed between the gripper mold K and the female mold F, so that no stretching occurs.

On the other hand, parts E and F are only pressed in a small area and are stretched a little, and part E shifts to part D.

Therefore, the area of portion B is significantly expanded by rolling, and the thin metal plate P becomes thinner and cracks occur or are more likely to occur.

However, since the portion D is transferred from the portion E, it does not become thinner even if the area is expanded. Therefore, in part B, width,
By making the depth smaller, the expansion or thinning of the metal sheet P can be kept to a minimum, improving the rolling properties and having a great effect of reducing the defective rate during rolling.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an embodiment of the present invention, Fig. 2 is a sectional view corresponding to section a-a in Fig. 1, Fig. 3 is an explanatory diagram of the use of the embodiment of the invention, and Fig. 4 is a longitudinal sectional view of the embodiment of the invention. It is an explanatory view of a bulge part rolling method. DESCRIPTION OF SYMBOLS 1...Base body, 2...Outer edge part, 3...Bulging part, 2
1... Long outer edge, 4... Refill storage chamber, 5... Notch, 7... Refill, 8... Film.

Claims (1)

[Scope of utility model registration request] A long elliptical bulge 3 is formed on a base 1 made of a thin metal plate such as aluminum, leaving an outer edge 2.
A refill storage chamber 4 is formed inside thereof, and a notch 5 reaching the refill storage chamber 4 is formed at an appropriate location at the end of the bulging portion 3.
It is a refill container in which a film made of synthetic resin, aluminum, etc. is bonded to the outer edge 2 to seal the refill storage chamber 4, and the base body 1 is pressure-molded and rolled. The bulge 3 is formed by leaving a long outer edge 21 at one end of the bulge 3 in the direction, and the end of the bulge 3 connected to the long outer edge 21 has a width and width as it goes toward the other end. A refill container characterized by being formed into a shape that gradually increases in depth.