JP2018027808A - Storage Box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage box capable of reducing the resistance when opening a lid.SOLUTION: The storage box has a body, a lid and a connection part. The body comprises a bottom wall constituting the bottom of the body and a rectangular tubular peripheral wall electing on the bottom wall. The lid is configured openably/closably for an opening surrounded by the opening end of the peripheral wall, and comprises an upper wall, which covers the opening when the lid is closed. The connection part is located between one side of the opening end of the peripheral wall and the end portion of the upper wall and is connected with the peripheral wall and the upper wall. The connection part 50 comprises a ruled line section 52, and the ruled line section 52 has a portion in which a perforation is formed along a direction in which the ruled line section 52 extends.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a paper storage box in which a main body and a lid are integrated.

  A storage box for storing a wrap film used for packaging foods or the like includes a main body portion and a lid portion, and the main body portion and the lid portion are formed by bending a piece of cardboard. The main body portion has a box shape with an upper portion opened in a rectangular shape, and the lid portion is configured to be openable and closable with respect to the opening of the main body portion. The lid portion is connected to one side of the upper end of the main body portion, and the lid portion is closed by bending the boundary portion between the lid portion and the main body portion. When pulling out the end of the wrap film stored in the main body from the storage box, the crease formed at the boundary between the cover and the main body is first extended, and the cover is closed. The crease is bent on the side opposite to when the cover is placed, thereby opening the lid (see, for example, Patent Document 1).

JP 2012-101843 A

  The storage box is usually stored with the lid portion closed. When the lid is opened from the closed state, the cardboard fibers are stretched on the inner surface of the storage box so as to return the crease attached to the boundary between the lid and the main body, and the outside of the storage box It is necessary to shrink the cardboard fibers at the sides. However, since the cardboard, which is a constituent material of the storage box, is a material having a small elongation, the force required to extend the boundary portion between the lid portion and the main body portion tends to increase on the inner surface of the storage box. As a result, there is a problem that resistance when opening the lid is large and it is difficult to open the lid.

  An object of this invention is to provide the storage box which can reduce resistance when opening a cover part.

  A storage box for solving the above-mentioned problems is a main body part that divides a space for storing a storage object, and a bottom wall part that constitutes a bottom part of the main body part and a standing wall with respect to the bottom wall part A rectangular cylindrical peripheral wall portion surrounding the space, and opening and closing with respect to the main body portion having a rectangular opening end on the opposite side of the peripheral wall portion to the bottom wall portion and the opening surrounded by the opening end A lid portion configured to be capable of including a top wall portion that covers the opening when the lid portion is closed; a side of the opening end of the peripheral wall portion; and a top wall portion of the top wall portion. A paper storage box that is located between the end portion and connected to the peripheral wall portion and the upper wall portion, and wherein the main body portion, the lid portion, and the connection portion are integrated. The connecting portion includes a ruled line portion, and the ruled line portion is formed with perforations along a direction in which the ruled line portion extends. Having a portion.

  According to the above configuration, since the ruled line portion has a portion in which a perforation is formed, the rigidity of the ruled line portion is reduced as compared with a case in which the ruled line portion does not have a portion in which a perforation is formed, The ruled line portion is easily deformed. That is, when the ruled line part is deformed, the force for pulling the paper fibers in the ruled line part in a direction to suppress the elongation of the ruled line part is weakened. It becomes easier to open the lid portion by folding it to the opposite side. Thus, according to the said structure, resistance when opening a cover part can be reduced.

The said structure WHEREIN: The said ruled line part may swell toward the inner side of the said storage box.
According to the said structure, compared with the case where the ruled line part is not rising toward the inner side of a storage box, the surface area of a ruled line part can be ensured largely on the inner surface of a storage box. As a result, when the lid part is closed, that is, when the ruled line part is folded inward, a large area where paper fibers constituting the ruled line part are scattered can be secured, and the paper fibers can be pushed into a narrow area. Can be suppressed. Therefore, since the ruled line portion is easily folded inward, it is possible to achieve both easy closing and easy opening of the lid portion.

The said structure WHEREIN: The said perforation may be formed in a part of said ruled line part in the direction where the said ruled line part is extended.
According to the above configuration, it is possible to suppress a decrease in the strength of the ruled line portion compared to a configuration in which perforations are formed in the entire width in the direction in which the ruled line portion extends.

The said structure WHEREIN: The center part of the said ruled line part in the direction where the said ruled line part extends may be sufficient as the said part.
According to the above configuration, it is possible to suppress the strength at the end portion of the ruled line portion from being reduced as compared with the case where the perforation is formed at the end portion of the ruled line portion. Since the end of the ruled line portion is easily subjected to a force that twists the lid portion obliquely with respect to the rotational axial direction when the lid portion is opened and closed, a decrease in strength at the end of the ruled line portion is suppressed, so that the connection portion Can be accurately suppressed from breaking.

  In the above configuration, the connection portion includes at least one belt-like portion extending in a belt shape along a direction in which the connection portion extends, and the belt-like portion is connected to the connection portion when the lid portion is closed. Inclined with respect to each of the peripheral wall portion and the upper wall portion, the ruled line portion may include a portion surrounding the band-shaped portion.

  According to the above configuration, the connection portion does not have a belt-like portion, that is, compared with a configuration in which the peripheral wall portion and the upper wall portion form a substantially right angle through the connection portion when the lid portion is closed. And the change of the angle in the surface of the storage box from a surrounding wall part to an upper wall part becomes loose. Therefore, it becomes easier for the user to grip the storage box as compared with the case where the right-angled portion is in contact with the user's hand of the storage box.

The said structure WHEREIN: The storage box for storing a wrap film as the said storage object may be sufficient as the said storage box.
According to the said structure, in the storage box for storing a wrap film, resistance when opening a cover part can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, in a storage box, resistance when opening a cover part can be reduced.

The perspective view which shows the perspective structure of the storage box of the state by which the cover part was closed about one Embodiment of a storage box. The perspective view which shows the perspective structure of the storage box of the state by which the cover part is opened about one Embodiment of a storage box. The perspective view which shows the perspective structure of the storage box of the state by which the cover part was closed about one Embodiment of a storage box. The top view which shows the planar structure of the connection part vicinity seen from the inner side of the storage box about one Embodiment of a storage box. Sectional drawing which is sectional structure of a connection part about one Embodiment of a storage box, Comprising: The sectional structure of the part containing a strip | belt-shaped part and a ruled line part is shown. Sectional drawing which shows the cross-section of the part which is a cross-sectional structure of a connection part about one Embodiment of a storage box, Comprising: Only a ruled line part. Sectional drawing which shows the cross-sectional structure of a connection part about one Embodiment of a storage box, Comprising: Another example of the cross-sectional structure of the part containing a strip | belt-shaped part and a ruled line part. The figure which shows the measurement result of the force required in order to open a cover part about an Example and a comparative example. The top view which shows the planar structure of the connection part vicinity seen from the inner side of the storage box about the modification of a connection part.

With reference to FIGS. 1-7, one Embodiment of a storage box is described.
[Overall configuration of storage box]
With reference to FIG. 1 and FIG. 2, the whole structure of a storage box is demonstrated. FIG. 1 shows a perspective structure of the storage box with the lid portion closed, and FIG. 2 shows a perspective structure of the storage box with the lid portion open. As shown in FIGS. 1 and 2, the storage box 10 includes a main body portion 20, a lid portion 30, and a cutting blade 40. In the state where the lid portion 30 shown in FIG. It has a substantially rectangular parallelepiped shape that extends. The portion of the storage box 10 excluding the cutting blade 40 is formed by assembling a single cardboard such as a coated cardboard.

  The main body 20 includes a substantially rectangular plate-shaped bottom wall 21 that constitutes the bottom of the main body 20, and a rectangular cylindrical peripheral wall 22 that stands on the bottom wall 21. As shown in FIG. 2, the opening end located on the opposite side of the peripheral wall portion 22 from the bottom wall portion 21 has a rectangular shape in plan view. In the following description, the side on which the open end of the peripheral wall portion 22 is positioned with respect to the bottom wall portion 21 is referred to as the upper side with reference to the state in which the storage box 10 is disposed so that the bottom wall portion 21 contacts the horizontal plane. The side where the bottom wall portion 21 is positioned with respect to the opening end of the peripheral wall portion 22 will be described as the lower side.

  The peripheral wall portion 22 includes a front wall portion 23, a rear wall portion 24, a right wall portion 25, and a left wall portion 26. The front wall portion 23, the rear wall portion 24, the right wall portion 25, and the left wall portion 26 are arranged along the outer edge of the bottom wall portion 21. The bottom wall portion 21, the front wall portion 23, and the rear wall portion 24 have a substantially rectangular plate shape that is substantially the same shape extending in the left-right direction that is a direction along the horizontal plane, and the front wall portion 23 and the rear wall portion 24. Refers to the front-rear direction, which is a direction along the horizontal plane and orthogonal to the left-right direction. The right wall portion 25 and the left wall portion 26 have a substantially rectangular plate shape that is substantially the same shape and face each other in the left-right direction.

  A band-like right projection piece 27 extending in the front-rear direction extends from the upper end of the right wall portion 25, and the right projection piece 27 is formed by bending a boundary portion between the right wall portion 25 and the right projection piece 27. 20 protrudes toward the outside. Similarly, a band-shaped left projection piece 28 extending in the front-rear direction extends from the upper end of the left wall portion 26, and the boundary portion between the left wall portion 26 and the left projection piece 28 is bent in the left projection piece 28. Projecting toward the outside of the main body 20.

  Each of the front wall part 23 and the rear wall part 24 and the bottom wall part 21 are adjacent to each other via a ruled line part 29 extending linearly. Between each of the right wall portion 25 and the left wall portion 26 and the bottom wall portion 21, and between the two wall portions adjacent to each other in the four wall portions 23 to 26 constituting the peripheral wall portion 22, It is adjacent to each other via a ruled line portion 29 extending linearly. The ruled line portion 29 is positioned at a corner portion of the main body portion 20, and the main body portion 20 is formed by bending the cardboard constituting the storage box 10 at the ruled line portion 29 and pasting it at an appropriate position.

  A space defined by the main body portion 20, that is, a space surrounded by the peripheral wall portion 22, is a space for storing a storage target of the storage box 10, and the wrap film 60 is stored in this space. The wrap film 60 is wound around, for example, a paper tube having a cylindrical shape to form a roll, and is stored in the main body 20 with the axial direction of the roll as the left-right direction. The size of each wall portion constituting the main body portion 20 may be a size that can partition a space of a size that can store the roll according to the size of the roll of the wrap film 60 to be stored. Examples of the constituent material of the wrap film 60 include polyvinylidene chloride and polyethylene.

  The lid portion 30 is configured to be openable and closable with respect to the opening surrounded by the opening end in the peripheral wall portion 22, and includes the upper wall portion 31, the front subwall portion 32, the right subwall portion 33, and the left subwall portion 34. I have. The upper wall portion 31 has a substantially rectangular plate shape that is substantially the same shape as the bottom wall portion 21, covers the opening when the lid portion 30 shown in FIG. 1 is closed, and extends vertically with the bottom wall portion 21. Face each other. The upper wall portion 31 has an upper wall portion front end 31F located on the front wall portion 23 side and an upper wall portion rear end 31B located on the rear wall portion 24 side when the lid portion 30 is closed. And have.

  In the state in which the lid portion 30 is closed, the front sub-wall portion 32, the right sub-wall portion 33, and the left sub-wall portion 34 extend downward from the upper wall portion 31, and on the outside of the main body portion 20, the peripheral wall It overlaps with a part of the part 22. That is, in the state where the lid portion 30 is closed, the front sub-wall portion 32 overlaps with the upper portion of the front wall portion 23, the right sub-wall portion 33 overlaps with the upper portion of the right wall portion 25, and the left sub-wall portion 34. Overlaps with the upper portion of the left wall portion 26. The front sub-wall portion 32 has a plate shape, and has a shape in which the width in the vertical direction when the lid portion 30 is closed is largest at the central portion in the left-right direction. That is, in the front sub-wall portion 32, the end portion located on the bottom wall portion 21 side when the lid portion 30 is closed has a substantially V-shaped shape. The right subwall portion 33 and the left subwall portion 34 have a substantially rectangular plate shape that is substantially the same shape.

  Between the upper end of the rear wall part 24 that is one side of the opening end of the peripheral wall part 22 and the upper wall part rear end 31B that is an end part of the upper wall part, the rear wall part 24 and the upper wall part 31 are connected. The connecting part 50 is located. The connection part 50 constitutes the storage box 10 together with the main body part 20 and the lid part 30, and the main body part 20 and the lid part 30 are connected via the connection part 50. That is, the main body unit 20, the lid unit 30, and the connection unit 50 are integrated. When the cardboard constituting the storage box 10 is bent or stretched at the position of the connecting portion 50, in other words, the lid portion 30 is opened and closed by the deformation of the connecting portion 50. Thereby, the cover part 30 is comprised so that rotation with respect to the main-body part 20 is made by making the left-right direction into an axial direction.

  Between the upper wall portion 31 and the front subwall portion 32, between the upper wall portion 31 and each of the right subwall portion 33 and the left subwall portion 34, and further, the front subwall portion 32 and the right subwall portion 33. A ruled line portion 35 that extends linearly is located between each of the right back plate portion 33b that constitutes the left back plate portion 34b and the left back plate portion 34b that constitutes the left auxiliary wall portion 34. The ruled line portion 35 is located at a corner portion of the lid portion 30, and the cover portion 30 is formed by folding the cardboard constituting the storage box 10 at the ruled line portion 35 and bonding them at an appropriate position.

  For example, as shown in FIG. 2, the right front plate portion 33 a extending from the upper wall portion 31 via the ruled line portion 35 and the right back plate portion 33 b extending from the front auxiliary wall portion 32 via the ruled line portion 35 are overlapped. The right subwall 33 is configured. The right back board part 33b is affixed on the right front board part 33a inside the cover part 30 rather than the right front board part 33a. Since the right back plate portion 33b is attached to the right front plate portion 33a, a step portion 33S is formed between the right back plate portion 33b and the ruled line portion 35 inside the lid portion 30.

  Similarly, a left front plate portion 34 a extending from the upper wall portion 31 via the ruled line portion 35 and a left back plate portion 34 b extending from the front auxiliary wall portion 32 via the ruled line portion 35 are overlapped to overlap the left sub wall portion 34. Is configured. The left back board part 34b is affixed on the left front board part 34a inside the cover part 30 rather than the left front board part 34a. A step 34S is formed between the left back plate part 34b and the ruled line part 35 on the inner side of the lid part 30 by attaching the left back plate part 34b to the left front plate part 34a.

  When the lid portion 30 is closed, the right protrusion piece 27 extending from the right wall portion 25 enters the step portion 33S and is caught by the right back plate portion 33b, and the left protrusion piece 28 extending from the left wall portion 26 enters the step portion 34S. Is caught on the left back plate part 34b. Thereby, it is suppressed that the cover part 30 floats up and the cover part 30 opens when it is not intended.

  The cutting blade 40 is a plate-like blade having a plurality of cutting edges arranged in a saw blade shape, and is along a lower end that is an end portion that curves toward the bottom wall portion 21 in the front auxiliary wall portion 32 in a plan view. In other words, it has a substantially V-shape. The cutting blade 40 is attached to the end portion of the front subwall portion 32 that faces the front wall portion 23 when the lid 30 is closed, and the plurality of cutting edges are the lower ends of the front subwall portion 32. Protruding from. The cutting blade 40 is attached to the front sub-wall portion 32 by, for example, ultrasonic bonding with a sealant material or an adhesive layer disposed between the front sub-wall portion 32 and the cutting blade 40. The constituent material of the cutting blade 40 is not particularly limited, and the cutting blade 40 may be made of resin or metal, for example.

  Note that the cutting edge of the cutting blade 40 only needs to be exposed from the front sub-wall portion 32 when the wrap film 60 is used, and is covered with other members when the storage box 10 storing the wrap film 60 is stored or transported. It may be.

  When using the wrap film 60 stored in the storage box 10 configured as described above, the user can, for example, wrap the wrap film 60 between the front wall portion 23 and the front auxiliary wall portion 32 with one hand. The container 10 is pulled out to grip its tip, and the storage box 10 with the lid 30 closed is gripped with the other hand. And a user presses the center part of the front sub-wall part 32 with a thumb, and rotates the storage box 10 by making the left-right direction into an axial direction. Thereby, the cutting edge of the cutting blade 40 is stabbed into the wrap film 60, and the wrap film 60 is cut | disconnected.

[Detailed configuration of connections]
With reference to FIGS. 3-7, the detailed structure of the connection part 50 is demonstrated. FIG. 3 is a perspective view of the storage box in a state where the lid portion is closed as seen from a position where the connection portion 50 can be seen.

  As shown in FIG. 3, the connecting portion 50 includes a plate-like strip-like portion 51 that extends in a strip shape along the direction in which the connecting portion 50 extends, and a ruled line portion 52 that extends linearly. The band-like portion 51 has a substantially oval shape extending in the left-right direction, which is the axial direction of the rotation of the lid portion 30, in plan view. The belt-like portion 51 is located between the main body portion 20 and the lid portion 30 and is located at the central portion in the left-right direction. The ruled line portion 52 surrounds the belt-like portion 51 and further extends from each of the left and right end portions of the belt-like portion 51 to the left and right end portions of the storage box 10. That is, the ruled line portion 52 is located at the edge of the connection portion 50, the main body portion 20 is connected to the ruled line portion 52 on one side of the connection portion 50, and the lid portion 30 is ruled on the other side of the connection portion 50. It is connected to the part 52.

  The cover 30 is opened and closed by deforming the cardboard constituting the storage box 10 by being bent or stretched at the ruled line portion 52. In the state where the lid portion 30 is closed, the ruled line portion 52 is bent, and the belt-like portion 51 is inclined with respect to both the rear wall portion 24 and the upper wall portion 31. In this way, the portion that is bent when the lid portion 30 is closed is the ruled line portion 52.

  In such a configuration, the storage box 10 has a shape in which the corners of the rectangular parallelepiped are scraped at the position of the band-shaped part 51 in the state where the lid part 30 is closed, and the rear wall part 24 on the surface of the storage box 10. The change in angle from the upper wall portion 31 to the upper wall portion 31 is gentle.

  The belt-like portion 51 is located at a portion that comes into contact with the user's hand when the user holds the storage box 10 and pulls out or cuts the wrap film 60. Since the change in the angle on the surface of the storage box 10 is gentle at the portion that comes into contact with the user's hand, the storage box 10 can be easily gripped by the user.

  The ruled line portion 52 has a small hole portion 53 that is a portion in which perforations are formed along the direction in which the ruled line portion 52 extends. That is, the small hole portion 53 is a portion where a plurality of holes penetrating the ruled line portion 52 in the thickness direction are arranged on the line.

  Note that a slip suppression portion 54 may be provided on the outer surface of the storage box 10. The slip suppression part 54 overlaps with the belt-like part 51, for example. The slip suppression part 54 is formed, for example, by applying a varnish such as UV varnish or attaching a resin film. The slip suppression unit 54 prevents the storage box 10 from slipping on the user's hand when the user is holding the storage box 10. Therefore, when rotating the storage box 10 such as when the wrap film 60 is cut, the user can easily control the movement of the storage box 10, and the user can easily handle the storage box 10. Furthermore, the slip suppression part 54 may overlap with the small hole part 53.

  With reference to FIG. 4 and FIG. 5, the structure of the small hole part 53 is further demonstrated. FIG. 4 is a diagram showing a planar structure in the vicinity of the connection portion 50 as viewed from the direction facing the inner side surface of the storage box 10 and shows a structure in which the ruled line portion 52 is extended. 5 and 6 are views showing a cross-sectional structure of the connecting portion 50 in a state where the ruled line portion 52 is extended. FIG. 5 shows a cross-sectional structure of a portion including the belt-like portion 51, and FIG. The cross-section of the part which does not contain the part 51 is shown. That is, FIG. 6 shows a cross-sectional structure of the ruled line portion 52 extending from the end portion in the left-right direction of the belt-like portion 51.

  As shown in FIG. 4, the small hole portion 53 is located in a portion of the ruled line portion 52 that surrounds the belt-like portion 51 and the ruled line portion in the left-right direction (axial direction) that is the direction in which the connecting portion 50 extends. 52 is located at the center. In other words, the small hole portion 53 is located at the center of the ruled line portion 52 in the direction in which the ruled line portion 52 extends. The central portion of the ruled line portion 52 in the left-right direction is a region that includes a point that bisects the ruled line portion 52 in the left-right direction and does not include the end of the ruled line portion 52.

  Specifically, the ruled line portion 52 extends in two lines sandwiching the band-shaped portion 51 at the center in the left-right direction. In other words, the central portion of the ruled line portion 52 in the left-right direction includes two parts constituting the ruled line portion 52. A small hole portion 53 is provided in each of the two portions constituting the ruled line portion 52.

The length L1 of the small hole portion 53 in the left-right direction is preferably 10% or more and 50% or less of the length L2 of the ruled line portion 52 in the left-right direction.
Note that the width of the ruled line portion 52 does not have to be constant. As shown in FIG. 4, the width W1 of the ruled line portion 52 in the portion surrounding the band-shaped portion 51 is determined from each of the left and right ends of the band-shaped portion 51. You may narrower than the width W2 of the ruled line part 52 in the part extended in the edge part of the left-right direction in the storage box 10. FIG.

  As shown in FIG. 5, the connection portion 50 protrudes toward the inside of the storage box 10. Specifically, the ruled line portion 52 connected to the rear wall portion 24 is raised from the rear wall portion 24 toward the inside of the storage box 10, and the ruled line portion 52 connected to the upper wall portion 31 is the upper wall portion. 31 swells toward the inside of the storage box 10. The band-like part 51 is connected to the ruled line part 52 swelled from the rear wall part 24 and the ruled line part 52 swelled from the upper wall part 31 at a position raised from the rear wall part 24 and the upper wall part 31. Although the belt-like portion 51 and the ruled line portion 52 are continuous, as described above, the portion that is bent when the lid portion 30 is closed is the ruled line portion 52.

A plurality of through holes 53 a constituting the small hole portion 53 are formed in the raised ruled line portion 52.
The ruled line portion 52 is extended when the lid portion 30 is opened, and the ruled line portion 52 is crushed when the lid portion 30 is closed, regardless of the deformation of the ruled line portion 52. In both the opened state and the closed state of the lid part 30, the band-like part 51 and the ruled line part 52 in the connection part 50 are raised toward the inside of the storage box 10.

  As shown in FIG. 6, the ruled line portion 52 swells toward the inside of the storage box 10 even between each of the left and right ends of the belt-like portion 51 and the left and right ends of the storage box 10. . Specifically, the ruled line portion 52 is curved so as to swell toward the inside of the storage box 10, and the center portion in the width direction of the ruled line portion 52 protrudes most toward the inside of the storage box 10.

  In the above configuration, the entire connection portion 50 is raised toward the inside of the storage box 10, but only the ruled line portion 52 may be raised toward the inside of the storage box 10 as shown in FIG. 7. . In the example shown in FIG. 7, both the ruled line portion 52 connected to the rear wall portion 24 and the ruled line portion 52 connected to the upper wall portion 31 are curved so as to swell toward the inside of the storage box 10. The central portion in the width direction of the ruled line portion 52 protrudes most toward the inside of the storage box 10. The belt-like portion 51 connects the ruled line portion 52 connected to the rear wall portion 24 and the ruled line portion 52 connected to the upper wall portion 31. The belt-like portion 51 does not protrude toward the inside of the storage box 10 with respect to any of the rear wall portion 24 and the upper wall portion 31 in the thickness direction of the cardboard.

  The method for forming the ruled line portion 52 and the through hole 53a is not particularly limited. For example, in the manufacturing process of the storage box 10, the outer shape of the cardboard for forming the main body portion 20, the lid portion 30, and the connection portion 50 is punched. The pressing of the mold for making the connecting portion 50 project inward and the formation of the through hole 53a are performed simultaneously.

  In order to prevent the end of the cardboard that defines the through-hole 53a from protruding from the outer surface of the storage box 10, the through-hole 53a has a blade for forming the through-hole 53a from the outer surface of the storage box 10 to the ruled line portion 52. It is preferably formed by being driven into. In this case, as shown in FIGS. 5 and 6, the diameter of the through hole 53 a gradually decreases from the outer side surface of the storage box 10 toward the inner side surface. However, the formation method of the through hole 53a and the shape of the through hole 53a are not limited to the above examples.

  In addition, the ruled line part 29 in the main body part 20 and the ruled line part 35 in the lid part 30 may be curved inside the storage box 10 like the ruled line part 52 shown in FIGS. 50 may have a different structure from the ruled line portion 52.

[Action]
The operation of the storage box 10 of this embodiment will be described.
Since the ruled line part 52 that is deformed for opening and closing the lid part 30 has the small hole part 53, the rigidity of the ruled line part 52 is lower than that of the configuration in which the ruled line part 52 does not have the small hole part 53. The part 52 is easily deformed. That is, when the ruled line part 52 is deformed, the force for pulling the fiber of the cardboard in the ruled line part 52 is weakened in the direction in which the elongation of the ruled line part 52 is suppressed. It becomes easy to bend the storage box 10 to open the lid 30.

  Moreover, since the rigidity of the ruled line part 52 is reduced by forming the through hole 53a, for example, compared with a configuration in which the rigidity of the ruled line part 52 is reduced by cutting a part of the ruled line part 52 in the thickness direction. It is easy to form a configuration for reducing the rigidity of the ruled line portion 52.

  Further, since the small hole portion 53 is located in a part of the ruled line portion 52 in the left-right direction, the strength of the ruled line portion 52 is higher than that of the configuration in which the small hole portion 53 is provided in the entire width of the ruled line portion 52. The decrease can be suppressed. Therefore, it is possible to suppress a decrease in durability of the ruled line portion 52 against repeated bending of the ruled line portion 52 due to opening and closing of the lid portion 30.

  In particular, since the vicinity of the edge of the ruled line portion 52 in the left-right direction is located near the end of the storage box 10 in the left-right direction, a force that twists the lid 30 obliquely with respect to the axial direction is applied when the lid 30 is opened and closed. Cheap. In the storage box 10 of the present embodiment, the small hole portion 53 is located at the center of the ruled line portion 52 in the left-right direction, and the small hole portion 53 is not provided near the end of the ruled line portion 52. A decrease in strength in the vicinity of the end portion of 52 can be suppressed. Therefore, it is possible to suppress breakage of the connecting portion 50 due to repeated bending of the ruled line portion 52.

  Further, the small hole portion 53 is located in a portion surrounding the belt-like portion 51 in the ruled line portion 52. The angle formed by the storage box 10 at the ruled line portion 52 when the lid 30 is closed is greater than that of the band-shaped portion 51 extending from the left and right ends to the end of the storage box 10. It is large at the part surrounding That is, in the ruled line portion 52, the portion surrounding the belt-like portion 51 is deformed due to opening and closing of the lid portion 30 than the portion extending from the left-right end portion to the end portion of the storage box 10 in the belt-like portion 51. The degree is small. If the small hole portion 53 is provided in a portion surrounding the belt-like portion 51 in the ruled line portion 52, the deterioration of the cardboard fibers in the small hole portion 53 due to repeated folding of the ruled line portion 52 is prevented. Therefore, the durability of the ruled line portion 52 can be improved.

  Further, since the ruled line portion 52 is raised toward the inside of the storage box 10, the ruled line portion is formed on the inner surface of the storage box 10 as compared with the configuration in which the ruled line portion 52 is not raised toward the inside of the storage box 10. A large surface area of 52 can be secured. As a result, when the lid portion 30 is closed, that is, when the ruled line portion 52 is folded inward, it is possible to secure a large area where the fibers of the cardboard constituting the ruled line portion 52 are scattered, for example, the rear wall portion It can suppress that a fiber is pushed into the narrow area | region pinched | interposed by 24 and the upper wall part 31. FIG. Therefore, the ruled line portion 52 is easily broken inward. Further, the ruled line portion 52 is easily broken inward by the ruled line portion 52 having the small hole portion 53. For this reason, the lid 30 is easily closed. That is, in the storage box 10 of this embodiment, both the ease of opening and closing of the lid 30 can be improved. Further, as a result of the ruled line portion 52 being easily folded inward, when the lid portion 30 is closed, the angle of the belt-like portion 51 between the rear wall portion 24 and the upper wall portion 31 becomes an appropriate angle. The band-like part 51 is easily arranged.

[Example]
The storage box described above will be described using specific examples and comparative examples.
<Example>
Using the coated cardboard, the storage of the example having the same shape as the storage box described in the above embodiment, in which a perforation is formed in a part of the ruled line portion in the connecting portion that connects the lid portion and the main body portion. A box was made. The total length in the left-right direction in the storage box of the embodiment is 320 mm, and the total length in the left-right direction in the belt-shaped portion is 160 mm. The perforations are divided into two regions sandwiching the belt-shaped portion at the center of the ruled line portion in the left-right direction, and a region extending from each of the left and right ends of the belt-shaped portion toward the left-right end of the storage box. Formed. That is, the small hole part which is the part in which the perforation was formed is provided in four places, and the length of each small hole part is 40 mm.

<Comparative Example 1>
Using coated cardboard, a storage box of Comparative Example 1 having the same shape as the example was produced without forming perforations in the ruled line portion. That is, the storage box of Comparative Example 1 does not have a small hole.

<Comparative example 2>
Using coated cardboard, a storage box of Comparative Example 2 was produced in which the length of the belt-shaped portion was changed with respect to the example without forming perforations in the ruled line portion. The total length in the left-right direction in the storage box of Comparative Example 2 is 320 mm, and the total length in the left-right direction in the belt-shaped portion is 120 mm. The storage box of Comparative Example 2 does not have a small hole.

<Evaluation>
The magnitude | size of resistance when opening a cover part was evaluated by performing the following test using the storage box of an Example and each comparative example.

(1) Affix one end of the band-shaped cellophane to the end of the inner side surface of the front sub-wall in the storage box.
(2) A storage box and a cellophane are set in the testing machine so that the other end of the band-shaped cellophane is pulled up by a Tensilon universal material testing machine (RTG-1210) manufactured by A & D.

  (3) From the state in which the lid is closed, that is, from the state in which the angle between the upper wall and the rear wall is 90 degrees, the state in which the lid is opened, that is, from the upper wall to the rear wall. Until the angle reaches 180 degrees, the end of the band-shaped cellophane is pulled by the test machine, and the force required for the pull is measured. The test conditions are a test environment of 22 ° C., 44% RH, and a test speed of 100 mm / min.

  FIG. 8 shows the measurement results. In FIG. 8, the horizontal axis indicates the length (displacement) of the cellophane moved in the length direction by being pulled by the testing machine, and the vertical axis indicates the magnitude of the tensile force applied to the cellophane. . The peak appearing in the region where the displacement is around 35.3 mm is the point where the lid part floats with respect to the main body part.

  As shown in FIG. 8, in both the example and the comparative examples, after the lid is lifted with respect to the main body, a force is gently applied to open the lid. And the storage box of the embodiment having the small hole portion is compared with the storage boxes of Comparative Examples 1 and 2 that do not have the small hole portion in the section after the lid portion is lifted with respect to the main body portion. The force required to open the part is small. That is, it was shown that the resistance at the time of opening the lid portion was reduced in the example by applying the perforation as compared with the comparative example. In Comparative Example 1 and Comparative Example 2 in which the lengths of the belt-like parts are different, the force required to open the lid part is approximately the same. Therefore, the length of the belt-shaped portion does not greatly affect the magnitude of the resistance when the lid is opened, and the lid is opened by the perforation to the ruled line portion regardless of the length of the belt-shaped portion. It is suggested that the resistance can be reduced.

As described above, according to the storage box of the above embodiment, the following effects can be obtained.
(1) Since the ruled line part 52 between the main body part 20 and the lid part 30 has the small hole part 53, the cardboard fiber is put in the ruled line part 52 in a direction to suppress the elongation of the ruled line part 52 when the ruled line part 52 is deformed. The pulling force is weakened. Therefore, it is possible to reduce the resistance when the lid 30 is opened.

  (2) Since the ruled line portion 52 is raised toward the inside of the storage box 10, a large surface area of the ruled line portion 52 can be secured on the inner surface of the storage box 10. Therefore, when the lid part 30 is closed, a large area where the fibers of the cardboard constituting the ruled line part 52 are scattered can be secured. Therefore, the ruled line portion 52 is easily folded inward, so that both the ease of closing and opening of the lid portion 30 can be achieved.

  (3) Since the small hole portion 53 is located at a part of the ruled line portion 52 in the direction in which the ruled line portion 52 extends, it is compared with the configuration in which the small hole portion 53 is provided in the entire width in the direction in which the ruled line portion 52 extends. And it can suppress that the intensity | strength of the ruled line part 52 falls. In particular, since the portion where the small hole portion 53 is located is the central portion of the ruled line portion 52 in the direction in which the ruled line portion 52 extends, a force for twisting the lid portion 30 obliquely with respect to the axial direction is applied when the lid portion 30 is opened and closed. In the vicinity of the end portion of the easy ruled line portion 52, a decrease in strength can be suppressed.

  (4) Since the connection part 50 includes the belt-like part 51 that is inclined with respect to each of the rear wall part 24 and the upper wall part 31 when the lid part 30 is closed, the connection part 50 is the belt-like part 51. The storage box 10 from the rear wall portion 24 to the upper wall portion 31 is compared with a configuration in which the rear wall portion 24 and the upper wall portion 31 form a substantially right angle via the connection portion 50. The change in angle at the surface of the film becomes gradual. Therefore, it becomes easier for the user to grip the storage box 10 as compared to the case where the right-angled portion comes into contact with the user's hand of the storage box 10.

  Further, in the ruled line portion 52, the portion surrounding the belt-like portion 51 is more deformed due to the opening and closing of the lid portion 30 than the portion of the belt-like portion 51 extending from the left and right end portions to the end portion of the storage box 10. The degree is small. Therefore, if the small hole portion 53 is provided in a portion surrounding the belt-like portion 51 in the ruled line portion 52, the fiber of the cardboard in the small hole portion 53 due to repeated folding of the ruled line portion 52 is obtained. Degradation can be suitably suppressed. Thereby, the three effects of improving the ease of opening the lid 30, the ease of grasping the storage box 10, and the durability of the ruled line portion 52 can be obtained simultaneously.

  (5) The storage box 10 is a storage box 10 for storing the wrap film 60 as a storage target. Generally, such a storage box 10 has a rectangular parallelepiped shape extending in the axial direction, and the connection portion 50 is located in a portion corresponding to the longest side in the storage box 10. The length of the ruled line portion 52 that needs to be deformed is relatively long, and the difficulty of opening the lid portion 30 tends to be remarkable. Therefore, by applying the configuration of the present embodiment to such a storage box 10, the effect of easily opening the lid 30 can be obtained.

In addition, the said embodiment can also be changed and implemented as follows.
-As FIG. 9 shows, the connection part 50 may contain the two strip | belt-shaped parts 51. FIG. The two belt-like parts 51 are arranged along the direction (axial direction) in which the connection part 50 extends. The ruled line portion 52 includes a portion surrounding each belt-like portion 51, a portion connecting the two belt-like portions 51 between the end portions of the two belt-like portions 51, a lateral end portion of the storage box 10, and the belt-like portion 51. It arrange | positions at the part which connects an edge part. Also in this case, it is preferable that the small hole part 53 is located in the center part of the ruled line part 52 in the direction where the ruled line part 52 extends. Even with such a configuration, the effect according to the above (4) can be obtained. Further, the connection part 50 may include three or more belt-like parts 51 arranged along the direction in which the connection part 50 extends.

  In the above-described embodiment, the small hole portion 53 is provided in a part of the ruled line portion 52 in the direction in which the ruled line portion 52 extends, particularly in the central portion. However, the small hole portion 53 has a ruled line in the direction in which the ruled line portion 52 extends. It may be provided in a part different from the central part of the part 52, or may be provided in the entire width of the ruled line part 52. Even with such a configuration, it is possible to reduce the resistance when the lid 30 is opened. Preferably, the region where the small hole portion 53 is provided is a region excluding the vicinity of the end portion of the ruled line portion 52 in the extending direction of the ruled line portion 52, specifically, a region excluding an area within 10 mm from the end of the ruled line portion 52. Should be selected within.

  -The structure in which the connection part 50 does not have the strip | belt-shaped part 51, or the structure in which the ruled line part 52 is not raised toward the inner side of the storage box 10 may be sufficient. If the ruled line portion 52, which is a portion bent when the lid portion 30 is closed, has the small hole portion 53, the effect (1) can be obtained.

  In the above embodiment, the storage box 10 is a container for storing the wrap film 60, but the storage target of the storage box 10 is not limited to the wrap film 60. As an example of the object to be stored in the storage box 10, a wound body that is a roll of a sheet-like article including a wrap film, an aluminum foil, or the like can be given.

  DESCRIPTION OF SYMBOLS 10 ... Storage box, 20 ... Main-body part, 21 ... Bottom wall part, 22 ... Perimeter wall part, 23 ... Front wall part, 24 ... Rear wall part, 25 ... Right wall part, 26 ... Left wall part, 27 ... Right protrusion piece 28 ... Left protrusion piece 29 ... Rule line part 30 ... Lid part 31 ... Upper wall part 32 ... Front sub wall part 33 ... Right sub wall part 34 ... Left sub wall part 35 ... Rule line part 40 DESCRIPTION OF SYMBOLS ... Cutting blade, 50 ... Connection part, 51 ... Band-shaped part, 52 ... Ruled line part, 53 ... Small hole part, 53a ... Through-hole, 60 ... Wrap film.

Claims (6)

A main body section that divides a space for storing an object to be stored, and a bottom wall section that constitutes a bottom section of the main body section, and a rectangular cylindrical peripheral wall that stands on the bottom wall section and surrounds the space And the main body part having a rectangular opening end opposite to the bottom wall part in the peripheral wall part,
A lid portion configured to be openable and closable with respect to the opening surrounded by the opening end, the lid portion including an upper wall portion that covers the opening when the lid portion is closed;
A connection portion located between one side of the opening end of the peripheral wall portion and an end portion of the upper wall portion and connected to the peripheral wall portion and the upper wall portion;
A paper storage box in which the main body, the lid, and the connecting portion are integrated,
The connection part includes a ruled line part, and the ruled line part has a portion in which perforations are formed along a direction in which the ruled line part extends. The storage box according to claim 1, wherein the ruled line portion is raised toward the inside of the storage box. The storage box according to claim 1, wherein the perforation is formed in a part of the ruled line part in a direction in which the ruled line part extends. The storage box according to claim 3, wherein the part is a central portion of the ruled line portion in a direction in which the ruled line portion extends. The connecting portion includes at least one strip-shaped portion extending in a strip shape along a direction in which the connecting portion extends,
When the lid portion is closed, the band-shaped portion is inclined with respect to each of the peripheral wall portion and the upper wall portion connected to the connection portion,
The storage box according to any one of claims 1 to 4, wherein the ruled line portion includes a portion surrounding the band-shaped portion. The storage box according to any one of claims 1 to 5, wherein the storage box is a storage box for storing a wrap film as the storage target.