JPS6228352A - Airtight can device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of Industry] The present invention is applicable to, for example, high-grade seaweed mills, high-grade moisture-proof cans, fine tea cans,
This invention relates to a can device that can be easily moisture-proofed and airtight, such as candy cans and other cans.

[Conventional technology and issues to be solved]

Airtight cans that can be moisture-proof and airtight are usually made of a metal bar or cylinder, and a typical example is the one shown in Figure 2. be. An inner lid 15 having a space 17 and a take-out knob 8 is provided in the outer cylinder 1, the outer cylinder 1 is divided all around the circumference at a suitable point 10, and the lower body is integrally fixed to the inner cylinder 11, Said inner lid 1
The upper body IA to which the body 5 is attached and detached is tightly fitted into the inner cylinder 11 and easily detached from the inner cylinder 11. Usually, the joints 10 of the upper and lower outer cylinders 1 are attached with tape, and a moisture-proofing agent is stored in the can, so that the structure can be used for a long time. In a structural can having this structure, the can body itself requires a large amount of material, and the volume occupied by the inner lid 15 and the space 17 is relatively large. The capacity of the body is large. The challenge of conventional technology is to improve and rationalize this drawback.

[Technical means to solve the problem]

The present invention aims to provide technical means for solving the above technical problems. In order to achieve the above-mentioned object, the present invention has a can body made of a single-plate cylinder with the minimum necessary plate thickness, the space for an inner lid inside a conventional can is removed, and the inner lid removal knob is mounted on the outside. Instead of the inner cylinder of conventional cans, the outer cylinder is sealed using the magnetic adhesive force of magnetic fluid. The airtight inner lid is fixed to the upper part of the can and fully supports the can upper lid. The knob has an appropriate shape depending on the purpose. Next, one embodiment of the present invention will be explained based on the drawings.

[Embodiment 1] FIG. 1 shows an embodiment of the present invention. FIG. 3 is an enlarged cross-sectional side view of a part of the applied example.

In FIG. 1, a can outer lid 6 is provided by cutting off the can body 1 at a required location 2 on the upper part of the entire circumference and above and below, as shown.

In the conventional one shown in FIG. 2, the upper lid IA has an inner cylindrical body 1
1 and is fixed to the lower body 1 with adhesive tape through the combined layer 10 shown by branch lines. However, since the present invention does not use an inner cover, the outer cover 6 that fits into the inner cylinder 11 is combined with the lower body 1. It is necessary to devise ways to make a tight seal at point 2. At a joining point 2, the can body is separated into a lower body 1 and an outer lid 6. In the present invention, the magnetic fluid L'& is interposed and fixed between the two divided bodies 1 and 6. This magnetic fluid provides the top portion 2 of the can bottom body 1 with the necessary strength to support the top cover 6t. The outer lid 6 and the can lower body 1 are made of magnetic steel plate. A required amount of magnetic fluid is injected into the joint 2 between the can lower body 1 and the outer lid 6 to improve magnetic attraction and maintain the required sealing and strength of the joint 2. The magnetic fluid described above is made by combining minute permanent magnetic materials such as rare earth ferrite, samarium cobalt, and other magnets with a synthetic resin or organic compound and a solvent sufficiently to have the required strength of magnetic properties depending on the application. Use a mixed fluid that maintains fluidity and has strong magnetic attraction.

The hermetic can with the structure shown and explained in Fig. 1 and the strength of the airtight can itself can be maintained by using a magnetic can body, a magnetic lid, and a magnetic fluid filled in the space formed by these. We confirmed that it is practical.

[Example 2] Another applied example is shown in FIG. For example, a magnet ring 4 is fixed to the top of the can bottom body 1 at the joining point 2, and the core body 4 is attached.
As shown in the figure, it is wound around the outer circumference of the inner cylinder 11 so as to protrude by a required dimension, and the entire circumference of the protrusion is filled with magnetic fluid. Also, a recess is formed in the inner cylinder above the magnet 4, and the space 3 is also injected and filled with magnetic fluid, and the magnetic fluid is filled between the outer lid 6 and the can lower body 1 and between the outer lid 6 and the inner cylinder 11. It is possible to interpose magnetically adsorbed materials to maintain adsorption force, thereby ensuring good airtightness and moisture proofing.

In addition, the magnetic fluid in the case of using the attracting magnet 4 may be one in which magnetic material powder such as iron powder is mixed and dispersed in a liquid.

〔effect〕

As already explained in the embodiments, the present invention allows the can wall to be divided into upper and lower halves at a required location, and the fitting gap between the top end of the divided can lower body and the outer lid, or between the outer lid and the inner cylinder. By injecting and filling the can with magnetic fluid, the can is airtight and maintains a high-strength bond, so it is easy to obtain a can with good airtightness and moisture-proofing effect, and the inner lid can be removed. , the content storage space can be increased and the outer diameter dimension can be reduced. As a result, it is possible to obtain an airtight can that is low in cost per unit of content, has the required airtightness, and is capable of dehumidification.

[Brief explanation of the drawing]

FIG. 1 is a partially enlarged sectional front view of one embodiment of the present invention, and FIG.
The figure is a partially enlarged sectional front view of a conventional airtight can, and FIG. 3 is a partially enlarged sectional front view of another applied embodiment of the present invention. 1...Can outer cylinder 2...Joint point 3...Space 4...Magnet ring 6...Outer lid
L...Magnetic Fluid 11...Inner Cylinder Patent Applicant Benjo Japax Research Institute Agent Patent Attorney Nakanishi - 1st Im Figure 2 3! I! Procedural amendment dated February 2nd, 1939, 6Q

Claims (1)

[Scope of Claims] 1. In a container that is sealed to prevent the contents from moisture, a cylindrical can is divided into upper and lower halves at a required point on the upper part to form a joint, and a magnetic fluid is applied to the joint. An airtight can device characterized in that the can is sealed by interposing the can. 2. The airtight can device according to claim 1, in which an annular groove formed at the joint portion is filled with magnetic fluid.