JPS592667Y2 - airtight can - Google Patents

Description

[Detailed description of the invention] This invention relates to an air-tight rim that partitions the garden area with an inner lid.

Conventionally, in cans in which a capped cylindrical lid was fitted to the festival area, when an inner lid was provided in the festival area, a push-top type of inner lid was mainly used. It was necessary to allow for extra volume inside the can to fit into the can.

In addition, there were cases where a cover-like inner lid was used, but in this case, there were problems such as the airtightness being compromised unless the inner lid fitting part had a small diameter due to its relationship with the lid. .

However, this idea provides a cylindrical part that fits into the inside of the festival on the lower side of a board similar in shape to the festival part, and also forms an annular flange on the periphery of the board to cover the upper side of the festival part to form an inner lid. Since the inner lid is fitted to the edge section with a synthetic resin ring fixed to the inner circumferential wall to form an airtight edge, it is possible to partition the edge section without sacrificing the internal volume of the can, and this solves the conventional problems mentioned above. This solved the problem.

That is, to explain this invention with reference to the embodiment shown in FIGS. 1 to 3, a cylindrical part 2 for fitting the festival day is provided on the lower side of the periphery of a disk 1 made of synthetic resin, and An annular flange 3 is provided on the cylinder, a thick wall part 4 is formed at the center of the lower surface of the disc 1, and a knob 5 is integrally provided on the lower side of the upper surface to form an inner lid. The shaped part 2 is fitted inside the edge part 6, and the upper side of the edge part 6 is covered with the fitted collar 3.

In addition, 7 in the figure is an annular protrusion provided on the outer peripheral wall of the cylindrical part 2,
In cooperation with the annular recess 10 formed in the inner wall of the synthetic resin ring 9 held by the winding part 8 of the edge part 6, airtightness of the inner lid mounting part can also be obtained.

The inner wall of the synthetic resin ring 9 is tapered, and the inner diameter of the edge portion becomes narrower toward the bottom, so that the airtightness of the inner lid mounting portion is improved.

However, the iron part can be closed by being stretched over the upper edge of the edge part 6 of the disc 1, without sacrificing the internal volume of the can, and by attaching a capped cylindrical lid to the edge part 6. (Not shown.

), there is no need to consider airtightness due to the provision of an inner lid.

In addition, since the thick portion 4 reinforces the disk 1, the disk 1 can be strengthened and prevented from becoming so-called sagging.

Next, the inner lid shown in FIG. 4 and FIG.
The inner lid shown in FIGS. 6 and 7, denoted by a, has an annular thick part 4b formed on the outside of the thick part 4 and concentric therewith.

In these embodiments as well, the can opening 6 can be closed in the same manner as in the previous embodiments.

The reinforcing effect of the disk by the thick portions 4 a and 4 b is more effective than that by the thick portion 4 alone.

Incidentally, although the above embodiments have been explained with respect to the hole edge, even in the case of a square chisel or an oval can, it is sufficient to make the disk 1 similar in shape to the edge and provide the plate with a cylindrical portion and an annular flange. become.

That is, according to this invention, a cylindrical part is provided on the lower side of a plate similar in shape to the festival, an annular flange is formed on the peripheral edge to constitute the inner lid, and a synthetic resin ring is attached to the inner peripheral wall of the inner lid. Since it is fitted into the fixed edge, the edge can be closed without reducing the internal volume of the can.

In addition, the thickness of the synthetic resin ring is gradually increased toward the bottom, and the cylindrical portion is made thinner toward the bottom so that they fit tightly together. The engagement between the ring and the annular recessed portion of the ring also has the effect of ensuring secure engagement.

[Brief explanation of the drawing]

Figure 1 is a plan view of the inner lid used in the embodiment of this invention;
The figure is a sectional view of FIG. 1, FIG. 3 is an enlarged sectional view with a part omitted, FIG. 4 is a plan view of another embodiment of the inner lid of this invention, and FIG. FIG. 6 is a plan view of another embodiment of the inner lid of this invention, and FIG. 7 is a sectional view of the same. 1... Disk, 2... Cylindrical part, 3...
...Annular collar, 4, 4a... Thick part, 4b...
...Annular thick part, 5...Pick, 6...
... Ennichi part, 7... Annular protrusion, 8...
Winding portion, 9...Synthetic resin ring, 10...
...Annular recess.

Claims (1)

[Scope of utility model registration request] In a can in which the cylindrical part of the inner lid is fitted into the edge part, the edge part has a synthetic resin ring with a lower thickness sequentially inserted and fixed to the inner circumferential wall, and the inner cover has a similar shape to the edge part, A cylindrical part is provided on the lower side of the plate having a thick reinforcing part in the center thereof, and the wall is made thinner at the bottom in order to fit tightly inside the synthetic resin ring, and the outer wall of the cylindrical part is An airtight edge comprising an annular protrusion that fits into an annular recess provided on the inner wall of a synthetic resin ring, and an annular flange that covers the upper edge of the fair day on the periphery of the plate.