container

Abstract

To provide a container that is easy to assemble and has a sufficient strength.SOLUTION: A container 1 includes: a bottom 2; a first side face part 3 that is folded from both facing sides of the bottom 2 and stands; a second side face part 4; a third side face part 5 that is folded from the other facing sides of the bottom 2 and stands; and a fourth side face part 6. The first side face part 3 and the second side face part 4 each have a first joint part 11 and a second joint part 12 where respective both ends are bonded. The third side face part 5 stands at an obtuse angle against the bottom 2 and is positioned so as to come in contact with the inside of the first joint part 11. The fourth side face part 6 stands at an obtuse angle against the bottom 2 and is positioned so as to come in contact with the inside of the second joint part 12.SELECTED DRAWING: Figure 1

Description

【Technical Field】 【0001】 The present invention mainly relates to a container for accommodating vegetables, fruits, and the like. 【Background Art】 【0002】 Conventionally, there is an assembled container for accommodating foods and the like (Patent Document 1). Such an assembled container is convenient because it can be used immediately after assembly. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 JP-A-2013-241185 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 In a conventional assembled container, if the assembly structure is complex, it takes time for the work, while if the assembly structure is simple, there is a problem that the assembled part is likely to come off when accommodating foods and the like. Therefore, it has been difficult to realize a container that can be assembled in a short working time and has sufficient strength. 【0005】 In view of the above problems, an object of the present invention is to provide a container that is easy to assemble and has sufficient strength. 【Means for Solving the Problems】 【0006】 To solve the above problems, the present invention provides a container comprising a bottom, a first side portion and a second side portion that are folded upright from opposite sides of the bottom, and a third side portion and a fourth side portion that are folded upright from the other opposite sides of the bottom, wherein the first side portion and the second side portion each have a first joint portion and a second joint portion where both ends are joined, the third side portion is arranged to be in contact with the inside of the first joint portion at an obtuse angle to the bottom, and the fourth side portion is arranged to be in contact with the inside of the second joint portion at an obtuse angle to the bottom. [Effects of the Invention] 【0007】 As described above, the present invention provides a container that is easy to assemble, and whose assembled parts are less likely to come apart or break even when filled with food or other items. [Brief explanation of the drawing] 【0008】 [Figure 1] Perspective view showing the configuration of a container according to an embodiment of the present invention. [Figure 2] Developed view of a container according to an embodiment of the present invention [Figure 3] Side view showing the joint of a container according to an embodiment of the present invention [Figure 4] Developed view of another example of a container according to an embodiment of the present invention [Figure 5] Enlarged view of the first key shape of the container according to an embodiment of the present invention [Modes for carrying out the invention] 【0009】 Hereinafter, embodiments of the container according to the present invention will be specifically described with reference to the drawings. The names of the shapes described in this embodiment, as well as the dimensions and scale of the container shown in the drawings, are for illustrative purposes only and are not limited thereto. Furthermore, for the sake of explanation, a three-dimensional coordinate system consisting of mutually orthogonal X, Y, and Z axes will be defined, with the positive direction of the Z axis being the upward direction and the negative direction being the downward direction. In addition, the side of the container facing the center will be referred to as the inside, and the side opposite the center as the outside. 【0010】 Figures 1 to 3 show an example of container 1 according to this embodiment. Container 1 is a container mainly for storing fresh produce such as vegetables and fruits. However, the contents are not limited to fresh produce; they may also be other fresh foods such as meat and fish, or processed foods. Furthermore, industrial products or their parts may also be stored. Container 1 may be made of paper such as cardboard or thick paper, or it may be made of bendable wood, resin, or the like. 【0011】 Container 1 has a bottom 2, a first side section 3, a second side section 4, a third side section 5, and a fourth side section 6, and is formed into a box shape excluding the top surface by folding a single plate-like member. The dotted lines in Figure 1 indicate the folding lines, and by valley folding along the folding lines, each side section stands up from the bottom 2. 【0012】 The bottom portion 2 is the bottom surface of the container 1 and has a roughly hexagonal shape. In other words, the bottom portion 2 has a shape that narrows in width towards the front end in the longitudinal direction. Note that the shape of the bottom portion 2 is not limited to a hexagon; it may be a rectangle or any other polygon. 【0013】 The first side portion 3 and the second side portion 4 are folded from a pair of opposing sides of the base portion 2 and stand upright. The first side portion 3 and the second side portion 4 stand upright at an obtuse angle to the base portion 2. That is, the angles between the base portion 2 and the first side portion 3 and between the base portion 2 and the second side portion 4 are greater than 90 degrees and less than 180 degrees. Alternatively, the first side portion 3 and the second side portion 4 may stand upright at approximately a right angle to the base portion 2. 【0014】 The first side portion 3 has a first key shape 7 at one end in the longitudinal direction and a second key shape 8 at the other end. The first key shape 7 has a notch in a part of one end of the first side portion 3 and has a substantially L-shape. The second key shape 8 has a notch in a part of the other end of the first side portion 3 and has a substantially L-shape. The second key shape 8 has a shape that is substantially point-symmetric to the first key shape 7. However, the second key shape 8 does not have to be point-symmetric to the first key shape 7. 【0015】 The second side portion 4 has a third key shape 9 at one end in the longitudinal direction and a fourth key shape 10 at the other end. The third key shape 9 has a notch in a part of one end of the second side portion 4 and has a substantially L-shape. The third key shape 9 may be substantially the same shape as the first key shape 7, or it may be a different shape. The fourth key shape 10 has a notch in a part of the other end of the second side portion 4 and has a substantially L-shape. The fourth key shape 10 may be substantially the same shape as the second key shape 8, or it may be a different shape. The fourth key shape 10 has a shape that is substantially point-symmetric to the third key shape 9. However, the fourth key shape 10 does not have to be point-symmetric to the third key shape 9. 【0016】 The first side portion 3 and the second side portion 4 are each folded twice along two fold lines (dotted lines) shown in Figure 3, from the center to one end. As shown in Figure 2, the first key shape 7 and the third key shape 9 are joined together by engaging their respective notches. The first key shape 7 and the third key shape 9 constitute the first joint portion 11. 【0017】 The first side portion 3 and the second side portion 4 are each folded twice along two fold lines (dotted lines) shown in Figure 3, from the center to the other end. As shown in Figure 2, the second key shape 8 and the fourth key shape 10 are joined together by engaging their respective notches. The second key shape 8 and the fourth key shape 10 constitute the second joint portion 12. 【0018】 The third side section 5 and the fourth side section 6 are folded up from the other pair of opposite sides of the base section 2. In other words, the third side section 5 and the fourth side section 6 are folded up from the other two opposite sides of the base section 2 from the side on which the first side section 3 and the second side section 4 stand. The third side section 5 and the fourth side section 6 are roughly trapezoidal in shape, with their width (horizontal width) increasing as they move upward from the base section 2. The third side section 5 and the fourth side section 6 may be symmetrical trapezoids or asymmetrical trapezoids. Furthermore, the third side section 5 and the fourth side section 6 may have rectangular or polygonal shapes. 【0019】 The third side surface 5 stands up at an obtuse angle with respect to the bottom 2. That is, the angle formed between the bottom 2 and the third side surface 5 is more than 90 degrees and less than 180 degrees. Further, the third side surface 5 is arranged to contact the inside of the first joint portion 11. That is, the third side surface 5 is arranged to contact the surface on the same side as the surface that accommodates the contents of the bottom 2 of the third key shape 9 of the first side surface 3 and the second side surface 4 that constitute the first joint portion 11. 【0020】 The fourth side surface 6 stands up at an obtuse angle with respect to the bottom 2. That is, the angle formed between the bottom 2 and the fourth side surface 6 is more than 90 degrees and less than 180 degrees. Further, the fourth side surface 6 is arranged to contact the inside of the second joint portion 12. That is, the fourth side surface 6 is arranged to contact the surface on the same side as the surface that accommodates the contents of the bottom 2 of the second key shape 8 of the first side surface 3 and the fourth key shape 10 of the second side surface 4 that constitute the second joint portion 12. 【0021】 As described above, the container 1 according to the present embodiment includes a bottom 2, a first side surface 3 and a second side surface 4 that are bent and stand up from both opposite sides of the bottom 2, and a third side surface 5 and a fourth side surface 6 that are bent and stand up from the other opposite sides of the bottom 2. The first side surface 3 and the second side surface 4 each have a first joint portion 11 and a second joint portion 12 where both ends are joined. The third side surface 5 stands up at an obtuse angle with respect to the bottom 2 and is arranged to contact the inside of the first joint portion 11. The fourth side surface 6 stands up at an obtuse angle with respect to the bottom 2 and is arranged to contact the inside of the second joint portion 12. Thereby, the container 1 can be easily assembled only by bending and joining a single plate-like member, and since the third side surface 5 and the fourth side surface 6 contact the respective joint portions, the joint portions, which are the assembled parts, are difficult to come off and the container 1 is difficult to break. Further, since the third side surface 5 and the fourth side surface 6 stand up at an obtuse angle with respect to the bottom 2, when the contents are accommodated so as to contact the third side surface 5 and the fourth side surface 6, the third side surface 5 and the fourth side surface 6 are pressed outward by gravity and the joined state of the joint portion is fixed, making the joint portion even more difficult to come off. The container 1 is suitable for accommodating fruits such as peaches and apples where the side surfaces contact each other. 【0022】 Furthermore, in addition to the above, in the container 1 described in this embodiment, the first side portion 3 and the second side portion 4 each have a first key shape 7, a second key shape 8, a third key shape 9, and a fourth key shape 10 at both ends, and the first joint portion 11 and the second joint portion 12 are joined by the engagement of the first key shape 7 and the third key shape 9, and the second key shape 8 and the fourth key shape 10. As a result, the container 1 can be easily assembled simply by hooking the key shapes together. 【0023】 Furthermore, in addition to the above, in the container 1 described in this embodiment, the third side portion 5 and the fourth side portion 6 have a shape in which their respective widths (horizontal widths) widen as they move upward from the bottom portion 2. As a result, when the container 1 is made into a dish shape that widens towards the top, the area in contact between the third side portion 5 and the fourth side portion 6 and the first joint portion 11 and the second joint portion 12 can be increased. Therefore, when the contents come into contact with the inner surfaces of the third side portion 5 and the fourth side portion 6, the third side portion 5 and the fourth side portion 6 can press each joint portion with a uniform pressing force, making it difficult for the joint portions to come apart. 【0024】 Furthermore, in addition to the above, in the container 1 described in this embodiment, the first side portion 3 and the second side portion 4 are each positioned at an obtuse angle with respect to the bottom portion 2. This allows the container 1 to have a dish-like shape, making it easier for the first side portion 3 and the second side portion 4 to come into contact with the contents. When the contents come into contact with the first side portion 3 and the second side portion 4, a force acts at the first joint portion 11 that pulls the first key shape 7 and the third key shape 9 away from each other, making the engagement less likely to come undone. Also, a force acts at the second joint portion 12 that pulls the second key shape 8 and the fourth key shape 10 away from each other, making the engagement less likely to come undone. 【0025】 Furthermore, in addition to the above, in the container 1 described in this embodiment, the bottom portion 2 has a shape that narrows in width towards the third side portion 5 and the fourth side portion 6, and the first side portion 3 and the second side portion 4 are each folded twice from the center to the end and joined together. This increases the area in contact between the first side portion 3 and the second side portion 4 and the contents, and the force pulling the key shapes of each joint increases, making it more difficult for the joints to come apart. 【0026】 Figure 4 shows another example of this embodiment, container 101. Container 101 differs from container 1 in the shapes of its first key shape 70, second key shape 80, third key shape 90, and fourth key shape 100. Container 101 has a first joint 110 formed by the first key shape 70 and the third key shape 90, and a second joint 120 formed by the second key shape 80 and the fourth key shape 100. The shapes of container 101 other than the first key shape 70, second key shape 80, third key shape 90, and fourth key shape 100 are the same as those of container 1, so their description is omitted. 【0027】 Figure 5 is an enlarged view of the first key shape 70. The first key shape 70 is composed of a first extension portion 70a, a second extension portion 70b, and a tip portion 70c. The first extension portion 70a has a shape that extends continuously from a part of the end of the first side portion 3 (the upper portion in the paper). The second extension portion 70b extends continuously from the first extension portion 70a and has a shape that is bent at approximately a right angle in a counterclockwise (leftward) direction around the Z axis with respect to the extension direction of the first extension portion 70a. The tip portion 70c extends continuously from the second extension portion 70b and has a shape that is bent at approximately a right angle in a counterclockwise (leftward) direction around the Z axis with respect to the extension direction of the second extension portion 70b. In other words, the first key shape 70 has an L-shape formed by the first extension portion 70a and the second extension portion 70b, and has a tip portion 70c extending from the second extension portion 70b. Alternatively, the first key shape 70 can be said to have a U-shape formed by the first extension portion 70a, the second extension portion 70b, and the tip portion 70c, with a recess 70d in the center. 【0028】 In Figure 5, for the sake of explanation, the shapes of the components are separated by dotted lines, but the first extension portion 70a, the second extension portion 70b, and the tip portion 70c are composed of a single component. The shapes of the first extension portion 70a, the second extension portion 70b, and the tip portion 70c may be rectangular, or they may be other shapes such as trapezoids or polygons. Furthermore, the angles at which the second extension portion 70b and the tip portion 70c bend from the first extension portion 70a and the second extension portion 70b, respectively, do not have to be right angles, but may be predetermined angles. In addition, the first key shape 70 may be an inverted L shape. 【0029】 The second key shape 80, the third key shape 90, and the fourth key shape 100 have the same shape as the first key shape 70, and each has the same first extensions 80a, 90a, and 100a as the first extension 70a, the same second extensions 80b, 90b, and 100b as the second extension 70b, the same tip 80c, 90c, and 100c as the tip 70c, and form the same recesses 80d, 90d, and 100d as the recess 70d. 【0030】 The first joint 110 is formed when the first key shape 70 and the third key shape 90 are joined in a point-symmetrical positional relationship. At this time, one side of the second extension 70b of the first key shape 70 (the bottom of the recess 70d) and one side of the second extension 90b of the third key shape 90 (the bottom of the recess 90d) are in contact, and the key shapes interlock. The tip 70c of the first key shape 70 and the tip 90c of the third key shape 90 function as a retainer, making it difficult for the joint to come apart. When the contents are placed in contact with the first side surface 3 and the second side surface 4 of the container 101, the contents push against the first side surface 3 and the second side surface 4, causing them to open outwards. However, even in this case, a force acts in the direction that interlocks the first key shape 70 and the third key shape 90, making it even more difficult for the joint of the first joint 110 to come apart. 【0031】 The second joint 120, like the first joint 110, is joined by the interlocking of the second key shape 80 and the fourth key shape 100. Therefore, since the first joint 110 and the second joint 120 are firmly joined to the container 101, the third side portion 5 and the fourth side portion 6 do not need to be erected at an obtuse angle to the bottom portion 2 and in contact with the first joint 110 and the second joint 120, respectively. 【0032】 As described above, the container 101 described in this embodiment comprises a bottom portion 2, a first side portion 3 and a second side portion 4 which are bent from opposite sides of the bottom portion 2 to stand upright and have a first joint portion 110 at one end and a second joint portion 120 at the other end, and a third side portion 5 and a fourth side portion 6 which are bent from the other opposite sides of the bottom portion 2 to stand upright and are arranged to be in contact with the inside of the first joint portion 110 and the second joint portion 120, respectively, the first joint portion 110 being formed at one end of the first side portion 3. The first key shape 70 and the third key shape 90 formed at one end of the second side portion 4 are joined together, and the second joining portion 120 is joined to the second key shape 80 formed at the other end of the first side portion 3 and the fourth key shape 100 formed at the other end of the second side portion 4. The first to fourth key shapes 70 to 100 each have a first extension portion 70a to 100a, a second extension portion 70b to 100b that bends and extends from the first extension portion 70a to 100a, and a tip portion 70c to 100c that bends and extends from the second extension portion 70b to 100b. As a result, the first key shape 70 and the third key shape 90 interlock, and the second key shape 80 and the fourth key shape 100 interlock, making the container 101 less likely to break and maintaining its shape firmly. 【0033】 Although embodiments of the present invention have been described above, the present invention is not intended to be limited to the illustrated embodiments, but can encompass various aspects of the invention described in the claims. [Explanation of Symbols] 【0034】 1, 101 container 2 bottom 3 First side part 4 Second side part 5 Third side part 6 Fourth side part 7, 70 1st key shape 8, 80 2nd key shape 9, 90 3rd key shape 10, 100 4th key shape 11, 110 1st joint 12, 120 2nd joint

Claims

[Claim 1] The bottom and, The first side portion and the second side portion are bent from both opposing sides of the bottom portion to stand upright, and each has a first joint portion where one end is joined and a second joint portion where the other end is joined. The bottom portion is bent from the other opposing sides and stands upright, and comprises a third side portion and a fourth side portion which are arranged to be in contact with the inside of the first joint portion and the second joint portion, respectively. The first joint is formed by joining a first key shape formed at one end of the first side surface and a third key shape formed at one end of the second side surface. The second joint is formed by joining a second key shape formed at the other end of the first side surface and a fourth key shape formed at the other end of the second side surface. The container is characterized in that the first to fourth key shapes each have a first extension portion extending from one end or a part of the other end, a second extension portion bending and extending from the first extension portion, and a tip portion bending and extending from the second extension portion, and the first extension portion, the second extension portion and the tip portion form a U-shape.

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