JP3381064B2 - Partition plate and metal can with partition plate in metal can - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition plate and a partition plate for a metal can having an inner curl intended to seal the inner side of the can mouth by fixing the center of the partition plate and abuttingly fixing it on an annular collar. Regarding metal cans with plates.

[0002]

2. Description of the Related Art Conventionally, there is known a metal can in which an annular inner flange is provided below the mouth of a metal can and a partition plate is fixed to the annular inner flange to seal the inside of the can.

[0003]

In the conventional metal can described above, in the case where an inner curl is provided in the can mouth (in which an annular bead is provided inside the can mouth), the can is smaller than the inner diameter of the can wall. Since the inner diameter of the partition is smaller, when installing and fixing the partition plate on the annular collar inside the can, in order to insert the partition plate easily, make the outer diameter of the partition plate smaller than the inner diameter of the can opening. There must be. Therefore, although a partition plate with an outer diameter smaller than the inner diameter of the can opening is usually used, if the outer diameter of the partition plate is smaller than the inner diameter of the can opening,
When fixing the partition plate on the annular collar, there is a problem that the partition plate is displaced and it is difficult to center the partition plate. For example, if the center of the partition plate is misaligned, it is better if the misalignment is small, but if the misalignment is large, the area of the fixed part with the annular collar will be smaller, and the sealing performance of the partition plate may be impaired. In addition, there is a problem that the appearance of the fixed state is impaired.

[0004]

However, the present invention has solved the above-mentioned conventional problems by providing a plurality of protrusions having the same outer diameter as the inner diameter of the can on the outer peripheral edge of the partition plate. The diameter of the convex portion is the diameter when the convex portions are provided symmetrically, but if the convex portion is not symmetrically provided, if the radius of the convex portion is substantially the same as the radius of the inner wall of the can. It will be good.

Namely invention of the partition plate is a inner curling a can opening, beneath the can opening onto the annular flange a metal can having an annular flange abut fixed in the partition plate to allow the sealing , abut to the can opening inner wall to the outer peripheral portion of the partition plate, the partition plate
A partition plate for a metal can, wherein a plurality of convex portions that can be arranged concentrically with the inner wall of the can are provided. Also a inner curl can opening is, abutment fixed onto the annular flange a metal can having an annular flange below the can opening, in <br/> partition plate to allow sealed partition plate the outer periphery of, and those <br/> contact to the can opening section inner wall, the partition in the metal can, wherein a plurality of convex portions of the partition plate can be placed in a can the inner and concentric, in that a knob piece The plate is a plate, the outer edge of which has the same radius of curvature as the inner wall of the can, and the number of which is 2 to 8 is provided at equal intervals. Next, the invention of a metal can is a metal can in which a can mouth part is an inner curl and a partition plate is installed and sealed in an annular brim provided below the can mouth part. A metal can with a partition plate, characterized in that a plurality of convex portions that come into contact with the inner wall of the can are provided at equal intervals , and the partition plate is an aluminum foil or a synthetic resin thin plate.

When the number of the protrusions is two, the protrusions are diametrically symmetric, the curvature of the outer edge of each protrusion is the same as the curvature of the inner wall of the can, and the contact distance is at least about 1 cm. Better. When there are three convex portions, it is necessary that they are provided at equal intervals of 120 degrees, and that the radius of the inner diameter of the can and the radius to the convex portion are the same.

Since the original purpose is to center the partition plate, there is no restriction on the shape of the convex portion, and it is a requirement that it be stable. Moreover, even if the diameters (or radii) are the same, they are not exactly the same, and it is sufficient to maintain the approximation (for example, up to about 3 m in diameter) at which the centers are not significantly displaced.

Even if the outer diameter of the convex portion is the same as the inner wall diameter of the can, it is necessary to insert the partition plate easily. Therefore, the total outer edge of the convex portion is smaller than 1/2 of the total outer edge of the partition plate. It is preferable.

For example, a protrusion (a sharp tip) may be used, but since it is not necessary to form a protrusion, even if the contact length with the inner wall of the can is long, it does not matter if the partition plate does not interfere with the entrance and exit. Become. However, since the partition plate is usually elastically deformable, it can be slightly deformed when it is inserted.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to an invention relating to the shape of a partition plate which is fixed on an annular collar in the mouth of a can and seals the interior of the can, and an invention relating to a metal can having the partition plate. The partition plate is provided with a plurality of convex portions having the same diameter or radius as the inner diameter or radius of the inner wall of the can mouth at the peripheral portion thereof. Since the purpose of the above is to set the center of the partition plate when it is installed, the outer diameter (or radius) of the convex portion is actually larger than the inner diameter of the can.
Is slightly smaller (for example, diameter 1.0 mm to 3 m
m).

[0011]

Embodiments of the present invention will be described with reference to the drawings. The partition plate 3 is attached and fixed onto an annular collar 2 provided inside the can 1a of the metal can 1. Six convex portions 4 and 4 are equally spaced (60 degrees) on the outer peripheral portion of the partition plate 3 (for example, aluminum foil).
The outer edge of each convex portion is formed in an arc shape having the same curvature as the inner wall of the can mouth portion. The radius R of the convex portion is the same as or slightly smaller than the radius R of the inner wall of the can mouth (for example, 0.5 mm).
~ 1 mm smaller). Reference numeral 5 in the drawing denotes a knob of the partition plate 3.

In the above embodiment, the partition plate 3 is attached to the can opening 1a.
To insert the, the partition plate 3 in the figure is inserted from the oblique direction as shown by the arrow 6. In this case, the partition plate 3 should be relatively easily inserted if it is slightly curved or if it is inserted so that the projections 4 and 4 of the partition plate 3 do not simultaneously contact the can end bead 7 (curl part). You can

[0013]

According to the present invention, the partition plate is provided with a plurality of convex portions which can be brought into contact with the inner wall of the can opening on the outer peripheral portion of the partition plate.
Be inserted fixed randomly, heart of the partition plate is fixed himself, there is an effect that can be the center of the annular flange, and substantially coincide with the center of the partition plate is stuck.

Since a plurality of convex portions are provided, however, there is no difficulty in inserting the convex portion into the can mouth portion even if the outer diameter is large (same as the inner diameter).

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of a partition plate of the present invention.

FIG. 2 is a plan view of a metal can similarly having a partition plate fixed thereto.

FIG. 3 is a front view in which the same is partially omitted and is shown in section.

[Explanation of symbols]

1 partition 2 ring tsuba 3 partition boards 4 convex 5 picks 6 jade

Claims (5)

(57) [Claims] 1. A partition plate in which a can mouth portion is an inner curl, and a metal can having an annular collar below the can mouth portion is abutted and fixed on the annular collar so as to be hermetically sealed. A partition plate for a metal can, wherein a plurality of convex portions are provided on the outer peripheral portion of the partition wall so as to come into contact with the inner wall of the can opening portion and to arrange the partition plate concentrically with the inner wall of the can. 2. A partition plate in which the can mouth portion is an inner curl, and a metal can having an annular collar below the can mouth portion is abutted and fixed on the annular collar so as to be hermetically sealed. A partition plate for a metal can, which is provided with a plurality of protrusions, which are in contact with the inner wall of the can opening portion and can be arranged concentrically with the inner wall of the can, on the outer peripheral portion thereof, and a tab. 3. The partition plate for a metal can according to claim 1, wherein the convex portion has an outer edge having the same radius of curvature as the inner wall of the can and is provided at equal intervals of 2 to 8. 4. A metal can with a inner curl can opening is sealed by installing the partition plate to an annular flange which is provided below of the can opening, the outer peripheral portion of the partition plate, the metal can and those <br/> against the inner wall, the partition fitted with a metal can, characterized in that a plurality of convex portions of the partition plate can be placed in a can the inner and concentrically at equal intervals. 5. The metal can with a partition plate according to claim 4, wherein the partition plate is an aluminum foil or a synthetic resin thin plate.