JP2016088595A - container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container capable of inhibiting damage of a bottom wall.SOLUTION: In a container 10 according to the invention, an outer peripheral wall 13 is erected from an outer edge part of a bottom wall 12 and a bottom rib 20, which protrudes from a lower surface 12M of the bottom wall 12 and causes the bottom wall 12 to be floated, extends along the outer peripheral wall 13 in a portion disposed at the inner side relative to the outer peripheral wall 13. Further, the container 10 includes a support protruding part 30 protruding from a portion of a lower surface 12M of the bottom wall 12, which is located at the outer side relative to the bottom rib 20, and supporting the bottom wall 12 with the bottom rib 20.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a container provided with a bottom rib that protrudes from a lower surface of a bottom wall to float the bottom wall.

  Conventionally, as this type of container, a container in which a bottom rib 4A extends along the outer peripheral wall 3 on the inner side of the outer peripheral wall 3 of the container main body 2 as in the container 1 shown in FIG. . In this container 1, the lid body 5 can be attached to the container body 2, and when a plurality of containers 1 are stacked vertically, the bottom rib 4 </ b> A of the upper container 1 is attached to the lower container 1. Engaging with an annular groove 5A formed in the lid 5, the lateral displacement of the container 1 is regulated (see, for example, Patent Document 1).

JP 2004-83054 A (paragraph [0019], FIG. 2 and FIG. 3)

  However, in the container 1 described above, since the bottom rib 4A is arranged on the inner side of the outer peripheral wall 3, when a load is applied to the outer peripheral wall 3, as shown by a two-dot chain line in FIG. There is a problem that 4 deforms and breaks with the bottom rib 4A as a fulcrum.

  This invention is made | formed in view of the said situation, and aims at provision of the container which can suppress the damage of a bottom wall.

  In order to achieve the above object, the container according to the invention of claim 1 has a bottom rib that rises from the outer edge of the bottom wall and protrudes from the bottom surface of the bottom wall to float the bottom wall. The container extending along the outer peripheral wall on the inner side of the outer peripheral wall has a feature in that it includes a support protrusion that protrudes from a portion of the lower surface of the bottom wall outside the bottom rib and supports the bottom wall together with the bottom rib.

  Here, “extending along the outer peripheral wall” includes not only an annular one extending along the entire outer peripheral wall but also one extending along a part of the outer peripheral wall in the circumferential direction. Specifically, when the outer peripheral wall has a circular shape, it includes not only a circular shape but also an arc shape, and when the outer peripheral wall has a rectangular shape, not only a square shape but also a U shape. And L-shaped ones.

  The invention according to claim 2 is characterized in that, in the container according to claim 1, the bottom wall and the bottom rib have a substantially rectangular shape in plan view, and the support protrusion extends along the corner portion of the bottom rib. Have.

  According to a third aspect of the present invention, in the container according to the first or second aspect, at least a part of a region sandwiched between the bottom rib and the support protrusion is thickened to form a thick portion. It has the characteristics in that place.

  The invention according to claim 4 is characterized in that, in the container according to claim 3, a tapered portion that becomes thinner toward the outside is provided at an outer end portion of the thick portion.

[Invention of Claim 1]
According to the first aspect of the present invention, when a load is applied to the outer peripheral wall, the support protrusion that protrudes from the portion of the lower surface of the bottom wall that is disposed outside the bottom rib supports the bottom wall together with the bottom rib. . Thereby, it is suppressed that a bottom wall deform | transforms by using a bottom rib as a fulcrum, and it becomes possible to suppress damage of a bottom wall.

[Invention of claim 2]
According to the second aspect of the present invention, since the support protrusion is disposed at the corner portion of the bottom wall where stress is likely to concentrate, it is possible to efficiently suppress damage to the bottom wall while suppressing an increase in the weight of the container. . Moreover, since the shape of the support protrusion is substantially L-shaped extending along the corner portion of the bottom rib having a substantially rectangular shape in plan view, the support by the support protrusion can be stabilized.

[Invention of claim 3]
In the invention of claim 3, since the thick part is formed in the portion sandwiched between the bottom rib and the support protrusion in the bottom wall, stress is concentrated by the formation of the support protrusion in the bottom wall. It becomes possible to suppress breakage of the portion that becomes easy.

[Invention of claim 4]
According to the invention of claim 4, it is possible to suppress a sudden decrease in thickness at the outer edge portion of the thick portion, and it is possible to suppress damage to the bottom wall at the outer edge portion of the thick portion.

The perspective view of the container which concerns on one Embodiment of this invention (A) The perspective view which looked at the cover body from the upper part, (B) The perspective view which looked at the cover body from the bottom A perspective view of the container body as viewed from above Perspective view of the container body as seen from below Bottom view of the container body Partially broken perspective view of stacked container bodies Side cross-sectional view of stacked containers Enlarged view of the periphery of the support protrusion in FIG. Enlarged view around the support protrusion in FIG. AA cross section of the container body BB cross section of the container body Side sectional view of container body according to modification (A) The perspective view which looked at the container main body which concerns on a modification from the downward direction, (B) The perspective view which looked at the container main body which concerns on a modification from the downward direction (A) Side sectional view of conventional container, (B) Side sectional view around bottom rib

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the container 10 of this embodiment includes a container body 11 and a lid body 40. The container body 11 has a substantially rectangular parallelepiped shape with an upper end opened (see FIG. 3), and the lid body 40 has a substantially rectangular flat plate shape (see FIG. 2A). The substantially rectangular shape includes a square shape in which all four sides are equal in length.

  As shown in FIG. 2A, the lid 40 has a structure in which a bank portion 42 is provided outside the main plate 41. The bank portion 42 includes an inner annular wall 43 erected upward from the outer edge of the main plate 41, an outer annular wall 44 that faces the inner annular wall 43 from the outside, and upper ends of the inner annular wall 43 and the outer annular wall 44. It is comprised with the upper end communication wall 45 which connects. Then, as shown in FIG. 2B, an annular groove 46 is formed on the back side of the bank portion 42. And this annular groove 46 fits the outer peripheral wall 13 of the container main body 11 mentioned later, and the cover body 40 is attached to the container main body 11. FIG.

  As shown in FIG. 2A, a protruding piece 44A projects outward from the lower end of the outer annular wall 44. As shown in FIG. Specifically, the projecting piece 44 </ b> A is disposed at one corner of the four corners of the outer annular wall 44. The protrusions 44A facilitate the removal of the lid 40 from the container body 11.

  In addition, an annular protrusion 41T that can be engaged with a bottom rib 20 of the container body 11 described later is formed on the outer edge of the main plate 41. The annular protrusion 41T has a substantially rectangular shape in plan view, like the outer shape of the lid 40.

  As shown in FIG. 3, the container body 11 has a structure in which the outer peripheral wall 13 stands from the outer edge portion of the bottom wall 12. The outer peripheral wall 13 includes a pair of first opposing walls 13A and 13A and a pair of second opposing walls 13B and 13B, and the first opposing walls 13A and 13A and the second opposing walls 13B and 13B. The two are gently inclined so as to be separated from each other as the distance from the bottom wall 12 increases.

  The bottom wall 12 has a structure in which a curved portion 12B is provided outside a flat portion 12A having a flat plate shape. The curved portion 12B has an R shape that goes upward as it goes outward, and the outer peripheral wall 13 described above stands from the outer end of the curved portion 12B (see FIG. 7).

  A nesting protrusion 15 sandwiched between the first opposed wall 13A and the second opposed wall 13B is formed at the corner portion of the outer peripheral wall 13. The nesting protrusion 15 is formed by making the corner portion of the outer peripheral wall 13 thicker than the first opposing wall 13A and the second opposing wall 13B.

  The nesting protrusion 15 is disposed at the lower end portion (the end portion on the bottom wall 12 side) of the outer peripheral wall 13, and as shown in FIG. 6, when the plurality of container main bodies 11 are stacked up and down, The bottom wall 12 of the upper container body 11 is lifted from the bottom wall 12 of the lower container body 11 by contacting the curved portion 12B of the bottom wall 12 of the container body 11 to be arranged. At this time, the outer peripheral wall 13 of the upper container body 11 is arranged with a gap between the outer peripheral wall 13 of the lower container body 11. Thereby, it is easy to take out the container body 11 from the plurality of stacked container bodies 11. The shape of the upper surface of the nesting protrusion 15 is an R shape corresponding to the curved portion 12B of the bottom wall 12.

  As shown in FIG. 4, a bottom rib 20 protrudes from the lower surface 12 </ b> M of the bottom wall 12. Here, the lower surface 12M of the bottom wall 12 refers to the entire surface visually recognized when the bottom wall 12 is viewed from below, and includes not only the lower surface of the flat portion 12A of the bottom wall 12 but also the lower surface of the curved portion 12B. Shall be. The bottom rib 20 is disposed inside the outer peripheral wall 13 (see FIG. 7) and extends along the outer peripheral wall 13. Specifically, the bottom rib 20 has a substantially rectangular shape in plan view, as with the outer peripheral wall 13 (see FIG. 5).

  FIG. 7 shows a state in which a plurality of containers 10 each having a lid 40 attached to the container body 11 are stacked one above the other. As shown in the figure, the bottom rib 20 of the container 10A disposed on the upper side (hereinafter referred to as “upper container 10A”) is referred to as the container 10B disposed on the lower side (hereinafter referred to as “lower container 10B”). ) And the bottom wall 12 of the upper container 10A is lifted from the lid body 40 of the lower container 10B. Further, the bottom rib 20 of the upper container 10A enters the inside of the annular protrusion 41T of the lid body 40 of the lower container 10B, and is surrounded on all sides by the annular protrusion 41T. This restricts the upper container 10A (container body 11) from moving laterally with respect to the lower container 11B. The bottom rib 20 of the lower container 10B causes the bottom wall 12 of the lower container 10B to float from the container placement surface 90.

  As shown in FIG. 4, a support protrusion 30 protrudes from a portion of the lower surface 12 </ b> M of the bottom wall 12 outside the bottom rib 20. As shown in FIGS. 4 and 5, the support protrusion 30 is disposed at each corner portion 12 </ b> C of the bottom wall 12 and has an L shape extending along the corner portion 20 </ b> C of the bottom rib 20. Specifically, the support protrusion 30 is mainly disposed on the flat portion 12A of the bottom wall 12, and the end of the support wall 30 on the outer edge side of the bottom wall 12 protrudes from the curved portion 12B (see FIG. 10).

  As shown in an enlarged view in FIG. 8, taper portions 31, 31 whose projecting amounts become smaller toward both ends of the L shape are provided at both ends of the L shape of the support projection 30. Further, the intermediate portion sandwiched between the tapered portions 31, 31 of the support protrusion 30 is a flat portion 32 in which the protrusion amount is substantially constant. The amount of protrusion of the flat portion 32 from the lower surface 12M of the bottom wall 12 is substantially the same as the amount of protrusion of the bottom rib 20 from the lower surface 12M, whereby the support protrusion 30 together with the bottom rib 20 Can be supported (see FIG. 10).

  Further, as shown in FIG. 8, a thick wall portion 16 formed by thickening the bottom wall 12 is formed in a portion of the bottom wall 12 sandwiched between the corner portion 20 </ b> C of the bottom rib 20 and the support protrusion 30. Has been. A portion of the bottom wall 12 outside the thick portion 16 is a thin portion 17 that is thinner than the thick portion 16. Specifically, as shown in FIG. 9, an L-shaped region R1 is formed between the corner portion 20C and the support protrusion 30, and the thick-walled portion 16 is bottom in the width direction of the L-shaped region R1. It has an L shape that connects the rib 20 and the support protrusion 30. Further, the thick portion 16 has an L-shaped overall length slightly shorter than an entire length of the L-shaped region R1, and is accommodated in the L-shaped region R1.

  As shown in FIG. 11, taper portions 16 </ b> S that gradually become thinner toward the thin portion 17 are provided at the end on the thin portion 17 side of the thick portion 16, that is, both end portions of the L shape. Thereby, the thickness of the bottom wall 12 does not change suddenly at the boundary between the thick part 16 and the thin part 17, and damage to the bottom wall 12 at the boundary part between the thick part 16 and the thin part 17 can be suppressed. It becomes possible.

  By the way, as shown in FIG. 10, the protruding height of the thick portion 16 is smaller than the protruding height of the support protrusion 30 in the width direction of the L-shaped region R <b> 1 (the horizontal direction in FIG. 10). Further, as described above, the thick portion 16 is accommodated in the L-shaped region R1 (see FIG. 9). Therefore, when the container main body 11 is viewed from the side, the thick portion 16 is disposed so as to be hidden behind the support protrusion 30 (see FIG. 8). Thereby, it becomes possible to make the thick part 16 inconspicuous and to suppress the appearance defect.

  The description regarding the structure of the container 10 of this embodiment is above. Next, the effect of the container 10 will be described.

  In the container 10 of this embodiment, for example, when the containers 10 are stacked up and down (see FIG. 7) or when the container 10 is chucked up and down, a load is applied to the outer peripheral wall 13 of the container body 11 from above and below. There is. Here, since the bottom rib 20 which makes the bottom wall 12 float is arrange | positioned inside the outer peripheral wall 13, it is like the conventional container 1 shown to FIG. 14 (A) and FIG. 14 (B). In addition, in the configuration having only the bottom rib 4A, there may be a problem that the bottom wall 4 is deformed and broken with the bottom rib 4A as a fulcrum. On the other hand, in the container 10 of the present embodiment, when a load is applied to the outer peripheral wall 13, the support protrusion 30 that protrudes from the outer side of the bottom rib 20 of the lower surface 12 </ b> M of the bottom wall 12 together with the bottom rib 20. The bottom wall 12 is supported. As a result, the bottom wall 12 can be prevented from being deformed using the bottom rib 20 as a fulcrum, and damage to the bottom wall 12 can be suppressed.

  Moreover, in the container 10 of this embodiment, since the support protrusion 15 is arrange | positioned only in the corner part 12C of the bottom wall 12 in which stress tends to concentrate when a load is applied to the outer peripheral wall 13, the support protrusion 15 is provided. It is possible to suppress damage to the bottom wall 12 while suppressing an increase in the weight of the container 10 (container body 11) due to the provision. In other words, the support protrusion 15 is provided only in a portion necessary for preventing the bottom wall 12 from being damaged, and the support protrusion 15 is prevented from being over-spec. In particular, the container 10 has a structure in which stress is easily concentrated on the corner portion 12 </ b> C of the bottom wall 12 by forming the thick nesting projection 15 at the corner portion of the outer peripheral wall 13. It is effective to arrange 30 at the corner portion 12 </ b> C of the bottom wall 12. Further, in the present embodiment, the shape of the support protrusion 30 is substantially L-shaped extending along the corner portion 20C of the bottom rib 20 having a substantially rectangular shape in plan view. Stabilization is achieved.

  Furthermore, in the container 10 of this embodiment, since the thick part 16 is formed in the part pinched between the bottom rib 20 and the support protrusion 30 among the bottom walls 12 of the container main body 11, the bottom wall 12 Of these, it is possible to reinforce a portion where stress tends to concentrate due to the protrusion of the support protrusion 30. In addition, since the portion of the bottom wall 12 outside the thick portion 16 is thin, it is possible to suppress the weight of the bottom wall 12 due to the formation of the thick portion 16.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various modifications are possible within the scope of the invention other than the following. It can be changed and implemented.

  (1) In the container 10 of the above embodiment, the support protrusions 30 are disposed on the flat plate portion 12A and the curved portion 12B of the bottom wall 12, but may be disposed only on the curved portion 12B. 12), it may be arranged only on the flat portion 12A. In the example of FIG. 12, the lower surface of the thick portion 16 formed between the bottom rib 20 and the support protrusion 30 is flat.

  (2) In the above embodiment, the bottom rib 20 has an annular shape along the entire circumference of the outer peripheral wall 13. However, for example, the bottom rib 20 may be L-shaped as shown in FIG. A U-shape may be used as shown in FIG. At this time, the end portion of the bottom rib 20 may be formed in a tapered shape in the same manner as the tapered portion 31 of the support protrusion 30. In the example of FIG. 13A, one bottom rib 20 is disposed at each corner 12C of the bottom wall 12, and in the example of FIG. 13B, the bottom ribs 20 and 20 are the longitudinal length of the bottom wall 12. They are arranged in pairs so as to face each other in the direction.

  (3) In the above embodiment, the container body 11 and the outer peripheral wall 13 have a substantially rectangular shape in plan view, but may have a substantially circular shape in plan view, for example. At that time, the bottom rib 20 may have a substantially circular shape, or may have a substantially arc shape formed along a part of the outer peripheral wall 13.

  (4) In the above embodiment, the container 10 is composed of the container main body 11 and the lid body 40. However, the container 10 may be composed of only the container main body 11 without including the lid body 40.

  (5) In the said embodiment, when the container main body 11 was seen from the side, the thick part 16 was settled in the L-shaped area | region R1, and the thick part 16 was the structure hidden behind the support protrusion 30. However, the thick portion 16 may be protruded and exposed outside the L-shaped region R1.

  (6) In the above-described embodiment, the support protrusion 30 may not be provided with the tapered portion 31 and the protrusion amount of the support protrusion 30 may be constant.

  (7) In the above embodiment, when the annular groove is formed in the lid 40 and the containers 10 are stacked, like the conventional container 1 shown in FIG. It is good also as a structure to fit.

DESCRIPTION OF SYMBOLS 10 Container 11 Container main body 12 Bottom wall 12M Lower surface 13 Outer peripheral wall 16 Thick part 17 Thin part 20 Bottom rib 30 Support protrusion 40 Lid

Claims (4)

In the container in which the outer peripheral wall stands up from the outer edge of the bottom wall, and the bottom rib that protrudes from the lower surface of the bottom wall and floats the bottom wall extends along the outer peripheral wall from the outer peripheral wall.
A container, comprising: a support protrusion that protrudes from a portion of the bottom surface of the bottom wall that is outside the bottom rib and supports the bottom wall together with the bottom rib. The bottom wall and the bottom rib have a substantially rectangular shape in plan view,
The container according to claim 1, wherein the support protrusion has a substantially L shape extending along a corner portion of the bottom rib.   3. The container according to claim 1, wherein a thick portion is formed by thickening at least a part of a region of the bottom wall sandwiched between the bottom rib and the support protrusion. .   The container according to claim 3, wherein a taper portion that becomes thinner toward an outer side is provided at an outer end portion of the thick portion.

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