JPH08338A - Doubled vacuum food container - Google Patents

Abstract

PURPOSE:To provide a doubled vacuum food container which is compact-sized and excellent in handling. CONSTITUTION:This doubled vacuum food case comprises a container main body 6 and a cover 7. The case main body 6 is a bottomed cylinder comprising an inner drum 8 and an outer drum 9, and a vacuum heat insulation space is formed in the interior thereof. A film 15 formed of a ceramic coating material to which an antibacterial agent is mixed is stacked on the inner surface of the inner drum 8. A stepped part 13 is formed on the inner surface of the upper opening part of the case main body 6, and a first locking part 9a is formed on the outer surface thereof. The cover 7 is so formed that a cover part 17 is removably integrated with a heat insulation part 16 formed by accomodating a heat insulating member 18 in cases 19, 20. A swollen part 21 prevented from falling into the case main body 6 by the stepped part 13 of the case main body 6 is formed on the heat insulation part 16. A first locking bearing part 25 removably locked on the first locking part 9a of the case main body 6 to be prevented from slipping off the case main body 6 is formed on the cover part 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable vacuum double food container, in particular, a lunch box, which holds food in a heat retaining state.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
As a lunch box, for example, fair fair 4-4992
As disclosed in Japanese Patent Publication No. 8, there is a vacuum double structure including an inner case and an outer case forming a vacuum heat insulation space between the inner case and the inner case. However, in this type of lunch box, food (mainly rice and rice) is not directly housed in the inner body, but a separate plastic inner container is required. For this reason, there is a problem that the lunch box itself becomes large and is not suitable for carrying.

Further, although the lid of the inner container has a double structure, the lid of the lunch box only covers the inner containers stacked in a plurality of stages, which is insufficient in terms of heat retention. On the other hand, a lid with a heat insulating structure, for example,
It is disclosed in Japanese Utility Model Laid-Open No. 4-108046. That is, in the heat insulating structure of the lid, the lid opening is closed by placing an inner plug as a heat insulating material on the mouth opening above the container body,
The inner plug is covered by screwing a lid onto a male screw provided on the base.

However, in such a heat insulating structure of the lid, since the inner plug as the heat insulating member and the lid are provided separately, for example, when eating the food contained in the container body, It is necessary to remove the lid and put it in an appropriate place, and then remove the inner plug, which is inconvenient to handle. Moreover, since a space is formed between the top surface of the inner stopper and the lid, if carried, the inner stopper may move upward due to vibration, and the contained food (particularly liquid food) may be spilled. is there. Therefore, when it is used as a portable device, it is necessary to press the inner plug into the mouthpiece.
It becomes difficult to put on and take off. Therefore, in view of the above problems, it is an object of the present invention to provide a vacuum double food container which is compact and easy to handle.

[0005]

In order to achieve the above object, according to the present invention, a vacuum double food container has a bottomed cylindrical shape consisting of an inner body and an outer body, and a vacuum heat insulation space is formed inside the container. A container main body having a step portion on the inner surface of the opening and a locking portion on the outer surface, and a coating film of a ceramic-based paint containing an antibacterial agent laminated on the inner surface of the inner body, and the step portion of the container body. A heat insulating part that is fitted and has a bulging part that prevents it from falling into the container is detachably integrated with a lid part that has a locking receiving part that removably locks with the locking part of the container body. It is composed of a converted lid.

[0006]

According to the structure of the present invention, the food is directly contained in the inner body of the container body. A coating film formed by applying a ceramic paint containing an antibacterial agent is laminated on the inner surface of the inner body, and does not bring about the growth of various bacteria in the food. Also,
Even if a person eats directly with a spoon, chopsticks, etc., the coating film has a high surface height and is excellent in slipperiness, so that it does not get scratched and food (particularly cooked rice) does not easily adhere thereto. And
When the locking part of the container body and the locking receiving part of the lid part are disengaged, the lid part is attached and detached together with the heat insulating part integrated with the lid part.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a perspective view showing the appearance of the lunch box,
The housing case 1 is adapted to be opened and closed at the upper side by a fastener 2, and as shown in FIG. 2, there are a cooked rice container 3 in which cooked rice is housed and a side dish container 4 in a two-tier stack.
And are housed. A space for accommodating a spoon, chopsticks, etc. 5 is formed above the side dish container 4 stacked in two layers.

As shown in FIG. 3, the cooked rice container 3 comprises a container body 6 and a lid 7 for closing the upper opening of the container body 6. The container body 6 is made of stainless steel, and the upper end portions of the container body 6 are joined together while the copper or aluminum foil 10 for radiation prevention is inserted between the inner body 8 and the outer body 9 having a bottomed cylindrical shape, and The base 12 is attached so as to cover the tip tube 11 provided at the center of the bottom surface of the body 9. The inner surface of the upper end of the container body 6 is a stepped portion 13 that expands. The space formed by the inner case 8 and the outer case 9 is evacuated through the tip tube 11 and is decompressed to a high vacuum state to form a vacuum heat insulation space. In addition,
A getter 14 serves to further increase the degree of vacuum after the chip tube 11 is sealed.

A coating film 15 having a thickness of about 20 μm is laminated on the inner surface of the inner body 8 by a ceramic paint containing an antibacterial agent. As the ceramic paint, one containing an inorganic polymer substance as a vehicle is used, and as the antibacterial agent, silver particles and copper particles are mixed and dispersed in the ceramic paint. A first locking portion 9a is provided on the outer surface of the upper opening of the outer case 9 so as to project therefrom.

As shown in FIG. 5, the lid 7 is composed of a heat insulating portion 16 and a lid portion 17. The heat insulation part 16 is
As shown in FIG. 6, the heat insulating member 18 such as Styrofoam.
Are housed in a resin bottom case 19 and closed by a lid case 20.

The heat insulating member 18 has a substantially columnar shape, and the upper and lower surfaces thereof are concave. The bottom case 19 has a bottomed cylindrical shape,
The bottom surface has a convex shape along the shape of the lower surface of the heat insulating member 18. A bulging portion 21 extends outward from the upper opening edge of the bottom case 19. The bulging portion 21 is locked to the step portion 13 formed on the inner surface of the upper end portion of the container body 6 to seal the inside of the container body 6 and prevent the heat insulating portion 16 from dropping into the container body 6. To do. Further, a groove-shaped second engagement receiving portion 22 is formed on the inner surface side of the bulging portion 21.

The lid case 20 has a substantially disk shape, and the peripheral edge thereof projects in a cylindrical shape, and the second engaging portion 23 is provided on the outer peripheral surface of the lid case 20 so as to be fitted to the inner surface of the upper opening portion of the bottom case 19. When the second case 23
It is adapted to be locked and integrated with the lock receiving portion 22. Further, the central portion of the lid case 20 has the heat insulating member 18
Is formed in a convex shape along the shape of the upper surface. Further, the central portion of the upper surface of the lid case 20 projects annularly,
The third locking portion 24 is formed on the outer surface thereof.

The lid portion 17 has a bottomed cylindrical shape with a shallow depth, and is formed on the inner surface of the opening edge portion on the outer body 9 of the container body 6.
A first lock receiving portion 25 that locks the locking portion 9a is formed. Further, the central portion of the bottom surface (ceiling surface) of the lid portion 17 projects in a ring shape, so that a third locking receiving portion 26 for locking the third locking portion 24 formed on the lid case 20 is formed on the inner surface thereof. Has been formed.

The vacuum double food container having the above structure is formed as follows. In the container body 6, a ceramic paint mixed with an antibacterial agent is applied to the inner surface of the inner body 8 and then applied to the inner surface of the inner body subjected to the base treatment at about 120 ° C. for about 20 minutes.
The coating film 15 is formed by heating for curing for a minute.

The aluminum foil 1 is formed on the outer peripheral portion of the inner body 8.
After arranging 0, the outer case 9 is packaged and both are joined at the upper end to be integrated. Then, after the inner space is evacuated through the chip tube 11, the chip tube 11 is sealed to form a vacuum heat insulating space. Then, the base 12 is bonded to the bottom surface of the outer case 9 so as to cover the tip tube 11, and is integrated by welding or the like.

On the other hand, in the lid 7, first, the heat insulating member 18 is housed in the bottom case 19, and the lid case 20 is put on the upper opening of the bottom case 19 to form the heat insulating portion 16.
The lid 17 is attached to the heat insulating unit 16 to integrate them. The integrated lid body 7 includes a first lock receiving portion 2 provided on the lid portion 17.
5 is detachably locked to the first locking portion 9a provided on the upper portion of the container body 6. At that time, the bulging portion 21 provided on the heat insulating portion 16 of the lid body 7 has the third locking receiving portion 2 provided on the lid portion 17.
The tip of 6 is pressed against the stepped portion 13 of the container body 6 by pushing the upper surface of the lid case 20 of the heat insulating portion 16. Note that the third locking portion 24 of the heat insulating portion 16 and the third locking receiving portion 26 of the lid portion 17 are, as shown in FIG.
It is advisable to provide a slight gap in the vertical direction. By integrating the heat insulating portion 16 and the lid portion 17, both members can be removed from the container body 6 at a time, so when eating, etc.
Convenient handling.

Further, the heat insulating portion 16 and the lid portion 17 lock the third locking portion 24 formed on the lid case 20 of the heat insulating portion 16 and the third lock receiving portion 26 of the lid portion 17. Since they are integrated with each other, it is possible to separate them afterwards. Therefore, it is possible to sufficiently clean the opposing surfaces of the both, and it is also excellent in hygiene.

As described above, the storage case 1 stores the side dish container 4 in addition to the cooked rice container 3 which constitutes the vacuum double food container. As shown in FIG. 7, the side dish container 4 includes a bottomed cylindrical container body 27 having a substantially semicircular cross section (see FIG. 8), and a lid 2 that closes an upper opening of the container body 27.
And 8. The lid 28 is made of a resin material having elasticity, and a lock receiving portion 30 that engages with a lock portion 29 formed on the upper opening edge portion of the container body 27 is formed on the peripheral edge portion thereof. .

[0019]

As is apparent from the above description, in the vacuum double food container according to the present invention, by applying a ceramic paint containing an antibacterial agent to the inner surface of the inner body to form a coating film, Since the food can be directly accommodated, it is possible to form a compact without the need for a separate inner container as in the conventional case. Further, since the coating film has a high surface hardness and is excellent in slipperiness, it will not be scratched even if it is directly eaten with a fork, spoon or the like, and food will not adhere to it. There is no problem that cleaning becomes difficult.

Further, since the lid body is formed by integrating the lid portion with the heat insulating portion, the handling is convenient, and both can be separated, so that the washing performance is excellent. Since the bulging portion formed on the heat insulating portion is placed on the stepped portion of the container body, even if the two are separated during use,
No trouble will occur.

[Brief description of drawings]

FIG. 1 is a perspective view of a case accommodating a vacuum double food container according to the present embodiment.

FIG. 2 is a front view of FIG.

3 is a cross-sectional view of a cooked rice container housed in the case of FIG.

FIG. 4 is a partially enlarged sectional view of FIG.

FIG. 5 is an exploded view of FIG.

FIG. 6 is an exploded view of the heat insulating unit of FIG.

7 is an exploded cross-sectional view of the side dish container housed in the case of FIG.

FIG. 8 is a plan view of the container body of FIG.

[Explanation of symbols]

6 ... Container body, 7 ... Lid, 8 ... Inner body, 9 ... Outer body, 15 ...
Coating film, 16 ... Insulation part, 17 ... Lid part, 19 ... Bottom case, 2
0 ... Lid case, 21 ... Swelling portion, 22 ... Step portion, 24 ... Third
Locking portion, 26 ... Third locking receiving portion.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hisanori Kuwashima, 1-20-5 Tenma, Kita-ku, Osaka-shi, Osaka (72) In Mahobin Co., Ltd. (72) Yoshiaki Okura, 1-chome, Tenma, Kita-ku, Osaka, Osaka No. 5 Inside Zojirushi Mahobin Co., Ltd. (72) Inventor Ryoichi Iwakura 1-20-5 Tenma, Kita-ku, Osaka City, Osaka

Claims (1)

[Claims] 1. A bottomed tubular body composed of an inner case and an outer case, in which a vacuum heat insulation space is formed, and a step portion is formed on the inner surface of the upper opening.
A container main body having locking parts on the outer surface and having a coating film of a ceramic paint mixed with an antibacterial agent laminated on the inner surface of the inner body, and a stepped part of the container main body for fitting into the container And a lid body detachably integrated with a lid portion formed with a lock receiving portion for removably locking the locking portion of the container body. A vacuum double food container characterized in that