JP2006174972A - Double cylindrical lunch box capable of always being held horizontal by rotary shaft and rotary shaft hole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lunch box which can be reasonably put in a relatively thin bag such as a briefcase for work and is kept horizontal at all times whether the bag is raised or laid down without shifting food inside a container. <P>SOLUTION: The lunch box 1 is in the double structure of an outer container 2 and an inner container 14 of a semicylindrical body to be a cylindrical body when piled up. By providing a rotary shaft 8 on the outer container 2 and a rotary shaft hole 19 composed of a handle 17 on the inner container 14, the inner container 14 mounted on the outer container 2 is turned by engaging the rotary shaft hole 19 to the rotary shaft 8, and the inner container 14 is kept horizontal at all times. Also, the handle 17 is provided with a vertical grip part 18, the rotary shaft hole 19 is composed of a vertical hole 21, also the handle 17 is bent to the inner side at both end lower parts 20 of the inner container 14, the lower part of the vertical hole 21 is extended to the part, and thus the inner container 14 is easily detached. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a container for carrying food, and more particularly to a lunch box.

  Lunch boxes, which are containers that carry conventional foods, are of rectangular box shape, oval box shape, cylindrical shape, or heavy box type that is a double stack of square box shape and elliptic box shape. Lunch boxes are known as normal shapes.

  On the other hand, a lunch box made of a substantially semi-cylindrical rigid container divided into two cylinders has been developed (see, for example, Patent Document 1). However, this semi-cylindrical lunch box is a wedge-shaped stabilizing member that protrudes downward from both ends of the semi-cylindrical container having the bottom vertex of this arc so as not to swing around the bottom vertex of the semi-cylindrical arc. Although this container needs to be always kept horizontal when carried, it has not been provided with a function to keep it horizontal.

  On the other hand, a plurality of containers for food are pivotally supported independently and attached to the outer frame box to make a lunch box, and these multiple containers have bottom dents and are removed from the outer frame By making it free, empty containers can be removed from the outer frame box and integrated by stacking these containers in order, and the outer frame box can be assembled and disassembled, and the removed outer frame box is further disassembled Thus, a lunch box that can be reduced in volume has been developed (see, for example, Patent Document 2).

  By the way, in order to make this lunch box small, the outer frame box and the container are formed in an assembling manner, so it is difficult to fix to the outer frame box by the rotating shaft which is the most important part in this container and is unstable. In addition, there was a problem in assembling and disassembling the outer frame box. Furthermore, in this rotary lunch box, the container for storing food is a rectangular parallelepiped, so a wasteful space is created at the ridge of the rectangular parallelepiped around the container rotating on the rotating shaft, and the outer frame itself becomes large. Therefore, there is a problem that a bag larger than necessary is required to carry the lunch box. Further, since this lunch box has a rectangular parallelepiped shape, there is a problem that a dedicated bag with a partition is required when storing the lunch box and other items at the same time.

Japanese Utility Model Publication No. 60-79326 Japanese Utility Model Publication No. 04-31526

  The problem to be solved by the present invention is to solve the above-mentioned problems of the conventional lunch box, to make it possible to easily attach / detach the rotatable inner container to the outer container, and to keep the food contained in the inner container at a stable horizontal level. The bag for commuting that accommodates this lunch box has a compact shape that can be made as thin as possible, and the bag that houses the lunch box of the present invention does not tilt the lunch box in the longitudinal direction. As long as the bag is raised or tilted horizontally, the food in the contents can always be kept in a stable state without being biased, and when eating, the inner container can be removed from the outer container and placed stably on a desk, etc. Furthermore, it is providing the lunch box which made the container easy to wash | clean.

  As a means of the present invention for solving the above problems, the invention of claim 1 includes a lower semi-cylindrical body projecting at a lower portion formed by dividing a cylindrical tubular body in the vertical direction and the lower semi-circle. An outer container made of an upper semi-cylindrical body projecting upward so that it can be fitted to the cylindrical body at the periphery, and a semi-cylindrical shape that is housed in the outer container and pivotally supported at both ends in the longitudinal direction It is a double-cylinder lunch box that can hold food horizontally, characterized by being formed from an internal container of the body.

  In this lunch box, the outer container is a cylindrical cylinder, and the inner container is a semi-cylindrical body that can rotate, so that there is no wasted space between them, so even a relatively thin bag can be used. The box can be accommodated without difficulty. For this reason, an empty space for storing other items such as documents in the bag can be easily obtained.

  The invention according to claim 2 is that the pivotal support of the semicylindrical body accommodated in the outer container at both ends in the longitudinal direction of the inner container is the upper part of both ends in the longitudinal direction of the lower semicylindrical body of the outer container. A rotating shaft that protrudes inward in a cantilevered manner from the inner surface extends horizontally from the upper part at both ends of the inner container, extends downward in the vertical direction, gradually turns inward, and connects to the lower parts at both ends of the inner container. 2. A double-cylinder lunch box capable of holding food horizontally according to claim 1, characterized in that it is engaged with a rotary shaft hole provided in a grip portion.

  With the above configuration, the inner container can be rotatably mounted on the outer container by the rotation shaft. Therefore, if only the rotation axis of the outer container is kept horizontal, the inner container is centered on the rotation axis even if the outer container rotates. Rotating to maintain the horizontal level at all times, the food in the inner container is not biased in the container.

  According to a third aspect of the present invention, the rotary shaft hole provided in the vertical grip portion of the handle is a vertical hole that engages the rotary shaft protruding from the inner surface of both end portions of the outer container. It is a double cylindrical lunch box that can hold the food of the means horizontally.

  The rotary shaft hole is a vertical hole, and the vertical grip portion of the handle is bent downward inward by the means of claim 2, so that the lower portion of the vertical hole reaches the inner bent portion. Therefore, when the inner container is fitted into the outer container, the inner container can be mounted very easily by simply inserting the inner container from above to below.

  In the invention of claim 4, the pivotal support of the semi-cylindrical inner container housed in the outer container forms a cantilevered rotating shaft that protrudes outward from both ends of the inner container. A rotating shaft support plate is provided at both ends in the longitudinal direction of the lower semicylindrical body and the upper semicylindrical body of the container. A rotation shaft hole cut out from the end portion is formed at the center of the end portion, and the cantilevered rotation shaft of the inner container is engaged with the rotation shaft hole formed at the center end portion of the rotation shaft support plate. A double-cylinder lunch box that can hold food horizontally according to claim 1.

  As described above, the rotating shafts that protrude from the outer surfaces of both ends of the inner container are provided, the rotating shaft support plate that supports the rotating shaft is disposed inside the outer container, and the notched rotating shaft is provided on the rotating shaft support plate. Since the hole is formed, the inner container can be easily taken out by being gripped by hand when being stored in or taken out from the outer container.

  In the invention of claim 5, the rotary shaft support plate of the lower semi-cylindrical body and the rotary shaft support plate of the upper semi-cylindrical body are overlapped with each other to form a lower semi-cylindrical body and an upper semi-cylindrical body. 5. A double-cylinder lunch box capable of holding food horizontally according to claim 4, wherein the lunch box is configured to be fitted.

  Since the upper and lower rotary shaft support plates are formed as described above, the rotary shafts projecting to the outer surfaces at both ends of the inner container can be accurately held between them.

  According to the sixth aspect of the present invention, the outer container is formed with a rolling prevention flat portion at the top of each of the lower semi-cylindrical body and the upper semi-cylindrical body, and the inner container is rolled onto the lower top of the semi-cylindrical body. 6. A double-cylinder lunch box capable of holding food horizontally according to any one of claims 1 to 5, wherein a flat portion for preventing movement is formed.

  Since the upper and lower semi-cylindrical bodies of these outer and inner containers are symmetrical, they can be placed in a balanced manner even when placed on a desk as a semi-cylindrical body, and the tops of the outer and inner containers are flat. Since it is formed, it can be placed stably.

  Describing the effect of the present invention, the lunch box of the present invention has an elongated cylindrical body, so that it can be accommodated in a relatively thin bag, and further has a double cylindrical shape so that the inner container rolls constantly. As it stays level, the lunch box is always kept level. For this purpose, you may hold the bag upright, or lay it on its side and place it on the shelf or on the knee sitting on the seat. Therefore, there is an advantage that the posture at the time of commuting can be made easy. Furthermore, when putting food into the container, the inner container can be easily attached to the outer container, and since the top is level, the container can be stably placed when eating or putting food into the inner container, Since no protrusions or the like are formed on the outer periphery of the container, there is no obstacle when washing the lunch box, and the present invention has excellent effects such as easy washing.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the appearance of the lunch box according to the first embodiment. FIG. 2 is a perspective view showing the outer container and the inner container by unpacking the lunch box according to the first embodiment. FIG. 3 is a perspective view showing an external appearance of a lunch box according to another embodiment of the present invention with a solid line and an inner container with a dotted line. FIG. 4 is a perspective view showing each of the outer container and the inner container by unpacking the lunch box according to another embodiment of the present invention.

  A lunch box 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, a cylindrical body is divided into upper and lower parts, and a lower semi-cylindrical body 3 projecting to the lower part and an upper part fitted to a peripheral edge 6 of the lower semicircular cylindrical body 3. The outer container 2 is formed from the protruding upper semi-cylindrical body 10. The lunch box 1 is molded from plastic. Of course, in addition to plastic, aluminum or other materials such as stainless steel can be used. In this embodiment, both end sides in the longitudinal direction of the lunch box are rounded. The outer container 2 of the lunch box 1 has an upper semi-cylindrical body 10 serving as a lid, and the lower semi-cylindrical body 3 and the lower semi-cylindrical body 3 can be stably placed when placed on a desk or the like. A flat portion 9 and a flat portion 11 in the longitudinal direction are formed at the top of the plate.

  As shown in FIG. 2, the outer container 2 includes an inner container 14 that is housed therein and is rotatably supported in a direction orthogonal to the longitudinal direction. In order to support the inner container 14, a cantilevered rotating shaft 8 that protrudes inward from the upper inner surface 7 at both longitudinal ends 4 of the lower semicircular cylindrical body 3 of the outer container 2 is formed. Further, a convex peripheral edge 6 is provided around the upper part of the lower semicircular cylindrical body 3 so as to be nested around the lower part of the upper semicylindrical body 10.

  On the other hand, the inner container 14 is formed of a semi-cylindrical body 15 having a lower part at the top. Both ends 16 of the inner container 14 in the longitudinal direction are formed so as to be inside the cantilevered rotating shaft 8 protruding inside the lower semicircular cylindrical body 3. Longitudinal grips 18 projecting horizontally outward from the upper outer surface of the inner container 14 at the longitudinal ends of the inner container 14, and then extending in the downward vertical direction and gradually bending inward to connect to the lower ends 20 of the inner container 14. The handle 17 is formed. A vertical grip 18 of the handle 17 forms a rotation shaft hole 19. The rotation shaft hole 19 is formed in the vertical hole 21, and the lower part thereof reaches a portion bent inside the lower part of the vertical grip part 18. Therefore, when the inner container 14 is engaged with the lower semicircular cylindrical body 3, the cantilevered rotating shaft 8 can be easily engaged from the lower side of the vertical hole 21. Furthermore, the inner container 14 has an inner lid 24 for mounting and covering the upper end thereof.

  Next, another embodiment of the lunch box 1 of the present invention will be described with reference to FIGS. In this embodiment, the inner container 14 formed of a semi-cylindrical body 15 that is housed in the outer container 2 and is rotatable is different from that of the above-described embodiment in that the outer end in the longitudinal direction from the both ends 16 in the longitudinal direction. It has the rotating shaft 23 which protrudes in the direction of the cantilever. On the other hand, the longitudinally opposite ends 4 of the lower semi-cylindrical body 3 and the upper semi-cylindrical body 10 of the outer container 2 are spaced upward from the both ends 4 and parallel to the both ends 4. The rotary shaft support plate 5 and the downward rotary shaft support plate 12 are disposed. A notch-like rotating shaft hole 5a and a notch-like rotating shaft that are notched from the respective ends at the upper end center and the lower end center of the upward rotating shaft support plate 5 and the downward rotating shaft support plate 12, respectively. A hole 12a is formed. The ends of the upward rotating shaft support plate 5 and the downward rotating shaft support plate 12 protrude slightly above and below the end portions of the lower semicylindrical body 3 and the upper semicylindrical body 10, respectively. Moreover, the downward rotating shaft support plate 12 of the upper semi-cylindrical body 10 is provided on the outer side of the lower semi-cylindrical body 3 with respect to the vertical rotating shaft support plate 5 as shown in FIG. When the lower semi-cylindrical body 3 is covered with the upper semi-cylindrical body 10 and closed, the overlapping portion 13 is formed, and the rotating shaft 23 that protrudes outward in a cantilever manner from the inner container 14 housed inside from above and below. Is supported so that it can roll. Both ends 4 in the longitudinal direction of the outer container 2 of this embodiment are formed in a state of being cut in a direction orthogonal to the longitudinal direction.

  The size of the inner container 14 in each of the above embodiments is such that the inner container 24 is fitted with an inner lid 24 and the upper semi-cylindrical body 10 is closed together with the lower semi-cylindrical body 3 to form the outer container 2. In the state, even when the inner container 14 and the inner lid 24 are rotated around the rotation shaft 8 or the rotation shaft 23, the size is set so as not to contact the outer container 2.

  An inner container 14 of a semi-cylindrical body 15 having an inner lid 24 is mounted in an outer container 2 composed of a lower semi-cylindrical body 3 and an upper semi-cylindrical body 10, respectively. By closing the joints 10 together, the lunch box 1 is formed of a cylindrical double container and can be carried in a container such as a bag. In this case, the inner container 14 of the semi-cylindrical body 15 is mounted on the lower semi-cylindrical body 3 of the outer container 2, the top thereof is closed with the inner lid 24, and the upper semi-cylindrical body 10 is covered to form the outer container 2. . In this state, the rotation shaft hole 19 or the rotation shaft 23 of the inner container 14 is formed so as to be positioned at the rotation center of the cross section orthogonal to the longitudinal direction of the lunch box 1.

  The outer container 2 and the inner container 14 are prevented from rolling when placed on a flat surface such as a desk or a cooking table for eating, putting food, or washing the container after eating. Therefore, the top part of each semi-cylindrical body is formed in the plane part 9, the plane part 11, or the plane part 22.

  With respect to the rotary shaft 8, or with respect to the rotary shaft hole 5a or the rotary shaft hole 12a, the inner container 14 has the rotary shaft 8 or the rotary shaft hole 5a or the rotary shaft hole 12a so that the center of gravity is located on the bottom side of the container. Is formed so as to be located at the upper part of both ends 16 in the longitudinal direction of the inner container 14. Therefore, when the inner container 14 is attached to the outer container 2, the bottom of the inner container 14 is always positioned below due to gravity. As a result, since the opening of the inner container 14 always faces upward, the inner container 14 can be placed in the inner container 14 even if the inner container 14 is tilted in the direction perpendicular to the longitudinal direction, unless the lunch box 1 is tilted in the longitudinal direction. The food will not move unevenly to the corners of the container.

  Furthermore, in the first embodiment, the handle 17 is formed so as to protrude in the longitudinal direction from both ends 16 of the inner container 14 in the longitudinal direction. Therefore, the detachment to the lower semi-cylindrical body 3 grips the portion of the handle 17. This can be done easily. Furthermore, since the shape of the rotation shaft hole 19 formed in the handle 17 of the inner container 14 that engages the rotation shaft 8 at both ends of the outer container 2 is a groove hole 21 that extends downward, the inner container 14 moves horizontally in the horizontal direction. However, when the rotary shaft 8 is fitted, it is restrained by the slot 21 and is not displaced in the horizontal direction. In addition, since the upper part of the inner lid 24 of the inner container 14 accommodated in the outer container 2 is empty, this place can be used as a place for chopsticks or a small soy sauce container. In this case, these chopsticks and soy sauce containers may be fixed to the inner lid 24 by appropriate means.

It is a perspective view which shows the external appearance of the lunch box of 1st Embodiment. It is a perspective view which unpacks the lunch box of 1st Embodiment and shows each of an external container and an internal container. It is a perspective view which shows the external appearance of the lunch box of other embodiment of this invention with a continuous line, and shows an internal container with a dotted line. It is a perspective view which shows each of an outer container and an inner container by unpacking the lunch box of other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lunch box 2 External container 3 Lower semi-cylindrical body 4 Both ends of a longitudinal direction 5 Upward rotation support plate 5a Rotating shaft hole 6 Convex peripheral part 7 Upper inner surface 8 Rotating shaft 9 Plane part 10 Upper semi-cylindrical body 11 Plane part DESCRIPTION OF SYMBOLS 12 Downward rotation support plate 12a Rotating shaft hole 13 Superposition part 14 Inner container 15 Semi-cylindrical body 16 Both ends of a longitudinal direction 17 Handle 18 Vertical grip part 19 Rotating shaft hole 20 Lower part of both ends 21 Vertical hole 22 Planar part 23 Rotating shaft 24 Inside lid

Claims (6)

  A lower semi-cylindrical body projecting to the lower part obtained by dividing the cylindrical tubular body vertically and an upper semi-cylindrical body projecting upward so that the lower semicircular cylindrical body can be fitted at the periphery. An outer container made of a semi-cylindrical body container that is housed in the outer container and pivotally supported at both longitudinal ends so as to hold food horizontally. A double cylindrical lunch box.   The pivotal support of the rotatable semi-cylindrical body housed in the outer container at both ends in the longitudinal direction of the inner container is cantilevered from the upper inner surface at both longitudinal ends of the lower semi-cylindrical body of the outer container. A rotating shaft that protrudes in the direction extends horizontally from the upper part at both ends of the inner container, extends downward in the vertical direction, gradually bends inward, and is connected to the lower parts at both ends of the inner container. The double-cylindrical lunch box capable of holding food horizontally according to claim 1, comprising engaging with a hole.   The rotary shaft hole provided in the vertical grip portion of the handle is a vertical hole that engages the rotary shaft protruding from the inner surface of both end portions of the outer container, and holds food horizontally according to claim 1 or 2. Possible double-cylinder lunch box.   The pivotal support of the semi-cylindrical inner container housed in the outer container forms a cantilevered rotation shaft that protrudes outward from both ends of the inner container, and the lower semi-cylindrical body of the outer container And a rotary shaft support plate that is spaced inward from the both ends and parallel to both ends at both ends in the longitudinal direction of the upper semi-cylindrical body, and an end portion at the center of the end of the rotary shaft support plate. A rotary shaft hole that is cut out from the rotary shaft is formed, and a cantilevered rotary shaft of the inner container is engaged with a rotary shaft hole formed at a central end of the rotary shaft support plate. A double-cylinder lunch box that can hold the food according to 1 horizontally.   The rotating shaft support plate of the lower semi-cylindrical body and the rotating shaft support plate of the upper semi-cylindrical body are formed so that the lower semi-cylindrical body and the upper semi-cylindrical body can be fitted to each other by overlapping their ends. The double-cylinder lunch box which can hold | maintain the food horizontally of Claim 4 characterized by the above-mentioned.   The outer container forms a rolling prevention flat part on the top of each of the lower and upper semicylindrical bodies, and the inner container forms a rolling prevention flat part on the lower top of the semicylindrical body. A double-cylinder lunch box capable of holding food horizontally according to any one of claims 1 to 5.

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