JP7395957B2 - packaging box - Google Patents

Description

The present invention relates to packaging boxes.

A cardboard packaging box has a cylindrical body, a top plate and a bottom plate provided above and below the body, and has one handle hole in each of the left and right side walls of the body. (For example, see Patent Document 1).

Patent No. 4731727

In the conventional packaging box described above, the hand hole is formed into a long hole extending in the front-rear direction so that the operator can insert four fingers other than the thumb into the hand hole. This configuration has a problem in that the strength of the side wall is reduced because a large opening is formed in the side wall.

SUMMARY OF THE INVENTION An object of the present invention is to provide a packaging box that solves the above-mentioned problems and can suppress a decrease in the strength of the side wall due to the hand hole.

In order to solve the above problems, the present invention provides a packaging box that includes a cylindrical body and a bottom plate provided in an opening on the lower side of the body. Two hand holes are opened in the left and right side walls of the body, and the two hand holes are spaced apart from each other in the front-rear direction. A lower edge of the hand hole protrudes inward from the hand hole at the center, and the hand hole is constricted at the center in the longitudinal direction.

When an operator lifts up the packaging box of the present invention, for example, he or she inserts four fingers other than the thumb into the front and rear hand holes, two each. In the packaging box of the present invention, a part of the side wall remains between the two hand holes, so compared to a case where one hand hole is formed in the side wall and is large enough to insert all four fingers. , it is possible to suppress a decrease in the strength of the side wall.

In the present invention, the hand hole on the front side has a rear opening area larger than the front opening area, and the rear hand hole has a front opening area larger than the rear opening area. can do.

When a worker inserts four fingers other than the thumb into the front and rear hand holes, the thicker fingers (middle finger, ring finger) are inserted into the larger opening area of the hand hole, and the thinner fingers (index finger, The little finger) is inserted into the area where the opening area of the hand hole is small. With the above-described configuration, the opening area of the hand hole can be suppressed, and a decrease in strength of the side wall can be suppressed.

In the present invention, the upper edge of the hand-holding hole on the front side is sloped upward from the rear end toward the front end, and the upper edge of the hand-holding hole on the rear side is tilted upward from the front end to the rear end. It can be tilted upward as it goes towards.

With this configuration, when a worker inserts four fingers other than the thumb into the front and rear hand holes, the upper edges of the front and rear hand holes are aligned with the bases of the four fingers. The slope makes it easier to lift the packaging box.

The packaging box described above includes a partition plate that divides the internal space of the body into a front and back space, the handle hole is closed by a cover plate, and a part of the outer edge of the cover plate is connected to the handle via a ruled line. It may be connected to the inner edge of the hole. In this case, the partition plate is arranged within the body so that the side edge of the partition plate is in contact with the inner surface of the side wall between the front and rear hand holes.

With this configuration, when the lid plate is pushed inside the body to open the handle hole, it is possible to prevent the lid plate from interfering with the partition plate.
Thereby, the inner surface of the side wall can be supported by the entire side edge of the partition plate. Further, when a top plate is provided in the upper opening of the body, the inner surface of the top plate can be supported by the entire upper edge of the partition plate. Therefore, the inner surface of the packaging box can be reliably supported by the partition plate, and the strength of the packaging box can be increased.

In the packaging box of the present invention, since a portion of the side wall remains between the two hand holes, a decrease in the strength of the side wall can be suppressed, and as a result, the load capacity of the packaging box can be increased.

FIG. 1 is a perspective view of a packaging box according to an embodiment of the present invention, viewed from the front upper right. It is a figure showing a blank sheet of a packaging box concerning an embodiment of the present invention. FIG. 1 is a front view showing a packaging box according to an embodiment of the present invention. FIG. 1 is a plan view showing a packaging box according to an embodiment of the present invention. FIG. 2 is a right side view showing a packaging box according to an embodiment of the present invention. It is a left side view showing a packaging box concerning an embodiment of the present invention. It is a right view which showed the first modification of the packaging box based on embodiment of this invention. It is a right view which showed the second modification of the packaging box based on embodiment of this invention. It is a right view which showed the third modification of the packaging box based on embodiment of this invention.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the following description, the front, rear, left, and right directions are set for convenience in explaining the packaging box of this embodiment, and do not limit the configuration or use condition of the packaging box.

As shown in FIG. 1, the packaging box 1 of this embodiment includes a rectangular cylindrical body 10, a top plate 20 provided at the upper opening of the body 10, and a lower opening of the body 10. A bottom plate 30 provided on the bottom plate 30 is provided. The packaging box 1 of this embodiment is a type A cardboard box.

As shown in FIG. 2, the packaging box 1 is formed by mountain-folding or valley-folding a blank sheet S obtained by cutting out a single corrugated sheet along each ruled line. The blank sheet S shown in FIG. 2 is arranged so that the inner surface side is visible.
Each ruled line (fold line) of the blank sheet S is a linear groove (pressed line) formed by pressing the surface of the blank sheet S.
Note that intermittent cuts may be formed in the ruled lines. This makes it easier to fold the blank sheet S along the ruled lines.

As shown in FIG. 1, the body 10 has a pair of front and rear end walls 11, 12 and a pair of left and right side walls 13, 14. Both end walls 11 and 12 and both side walls 13 and 14 are formed into a square shape in side view (see FIG. 3).
A left side wall 13 is connected to the left edge of the front end wall 11 via a ruled line. Further, a rear end wall 12 is connected to the rear edge of the left side wall 13 via a ruled line. Further, a right side wall 14 is connected to the right edge of the rear end wall 12 via a ruled line. Further, a band-shaped joint piece 15 is continuously provided on the right edge of the front end wall 11 via a ruled line. The joining piece 15 is joined to the inner surface of the right side wall 14.

When the blank sheet S (see FIG. 2) is bent along each ruled line and the joining piece 15 is joined to the inner surface of the right side wall 14, the front and rear end walls 11, 12 and the left and right side walls 13, 14 form a rectangular shape in plan view. A cylindrical body 10 is formed.

The top plate 20 closes the upper opening of the body 10 (see FIG. 4). The top plate 20 includes left and right inner flaps 22, 22 (see FIG. 2) connected to both side walls 13, 14, and front and rear outer flaps 21, 21 (see FIG. 2) connected to both end walls 11, 12. (see) are formed by overlapping them.

The bottom plate 30 closes the lower opening of the body 10. The bottom plate 30 has left and right inner flaps 32, 32 (see FIG. 2) connected to both side walls 13, 14 on the lower surface, and front and rear outer flaps 31, 31 (see FIG. 2) connected to both end walls 11, 12. (see) are formed by overlapping them.

A partition plate 40 that divides the internal space of the trunk 10 into front and rear spaces is accommodated in the trunk 10 of this embodiment. The partition plate 40 is a rectangular flat plate arranged parallel to the front and rear end walls 11 and 12, and is formed to have the same shape and size as both end walls 11 and 12.

The partition plate 40 is arranged at the center of the internal space of the body 10 in the front-rear direction. Thereby, the internal space of the packaging box 1 is divided into two equal parts, front and rear.
The entire left edge of the partition plate 40 is in contact with the inner surface of the left side wall 13, and the entire right edge of the partition plate 40 is in contact with the inner surface of the right side wall 14. Further, the entire upper edge of the partition plate 40 is in contact with the inner surface of the top plate 20, and the entire lower edge of the partition plate 40 is in contact with the inner surface of the bottom plate 30.

In the upper part of the right side wall 14, as shown in FIG. 5, two hand holes 50 and 60, front and rear, are arranged at intervals in the front and rear direction. The front and rear hand holes 50 and 60 are arranged on both front and rear sides of the central portion of the side wall 14 in the front and back direction.
The front and rear hand holes 50 and 60 are openings that pass through the side wall 14, and are parts on which the operator places his fingers when lifting the packaging box 1.

The front handle hole 50 extends in the front-rear direction and slopes upward from the rear end toward the front end. The front handle hole 50 is closed by a cover plate 51. The upper edge of the cover plate 51 is connected to the upper edge 50a of the handle hole 50 via the ruled line L51. The ruled line L51 is formed on the inner surface of the side wall 14.
The outer edge of the cover plate 51 other than the upper edge is connected to the inner edge of the handle hole 50 via the slit L52.

The upper edge 50a of the front handle hole 50 is a straight line that slopes upward from the rear end toward the front end. The upper edge 50a of the front handle hole 50 is inclined so as to approach the upper edge of the side wall 14 from the rear end toward the front end.
Although the angle of inclination of the upper edge 50a with respect to the upper and lower edges of the side wall 14 is not limited, it is preferably 20 degrees or more and 60 degrees or less.

The front handle hole 50 has two areas, a front part 55 on the front side and a rear part 56 on the rear side, with a virtual reference line perpendicular to the upper edge part 50a as a boundary at the center of the upper edge part 50a. is formed. The front part 55 and the rear part 56 continuously form one hole.
The opening area of the rear part 56 of the front hand hole 50 is larger than the opening area of the front part 55.

The inner edge of the rear part 56 of the front handle hole 50 is curved in an arc shape from the rear side to the lower side. The inner edge of the front part 55 of the front hand hole 50 is curved in an arc shape from the front side to the bottom side. The lower edge of the front handle hole 50 projects inward at the center. In this way, the front handle hole 50 is constricted at the center in the longitudinal direction.

The rear handle hole 60 is symmetrical with the front handle hole 50 across the center of the side wall 14 in the front-rear direction. Therefore, a detailed explanation of the rear handle hole 60 will be omitted.
The rear handle hole 60 is closed by a cover plate 61. The upper edge of the cover plate 61 is connected to the upper edge 60a of the handle hole 60 via the ruled line L61, and the outer edge other than the upper edge of the cover plate 61 is connected to the inner edge of the handle hole 60 via the slit L62. It is attached to the department.

The upper edge 60a of the rear handle hole 60 slopes upward from the front end toward the rear end. The opening area of the front part 65 of the rear hand hole 60 is larger than the opening area of the rear part 66. The hand hole 60 on the rear side is inclined upward as a whole from the front end toward the rear end.

The distance between the front and rear hand holes 50 and 60 in the front and back direction is such that when the worker lifts the packaging box 1, he or she can insert four fingers other than the thumb into the front and rear hand holes 50 and 60 separately. It is set up so that it can be done.

The rear part 56 of the front handle hole 50 and the front part 65 of the rear handle hole 60 are arranged at the center of the side wall 14 in the front-rear direction. In other words, a portion having a large opening area in the front and rear hand holes 50 and 60 is located at the center of the side wall 14 in the front-rear direction.

The entire right edge of the partition plate 40 is in contact with the inner surface of the right side wall 14 between the front and rear hand holes 50 and 60 (see FIG. 1). The front and rear hand holes 50 and 60 are arranged on both the front and rear sides of the partition plate 40. In a side view of the packaging box 1, the front and rear handle holes 50, 60 and the right edge of the partition plate 40 are arranged so as not to overlap.

As shown in FIG. 6, two hand holes 50 and 60, front and rear, are also arranged in the upper part of the left side wall 13 at intervals in the front-rear direction.
The holes 50 and 60 for holding both hands in the left side wall 13 are symmetrical with the holes 50 and 60 for holding both hands in the right side wall 14 (see FIG. 5), so a detailed explanation thereof will be omitted.

When the operator lifts the packaging box 1, the operator pushes the cover plates 51, 61 of the front and rear hand holes 50, 60 shown in FIG. 1 from the outside to the inside. As a result, the lid plates 51 and 61 are bent inward of the body 10 with respect to the side walls 13 and 14, and front and rear hand holes 50 and 60 are opened in the left and right side walls 13 and 14 of the body 10.

The operator inserts four fingers other than the thumb into the front and rear hand holes 50 and 60, two each. When the worker is located at the rear side of the packaging box 1, the operator inserts his index finger and middle finger into the hand hole 50 on the front side, and inserts his ring finger and little finger into the hand hole 60 on the rear side.
At this time, as shown in FIGS. 5 and 6, the middle finger is inserted into the rear part 56 of the front hand hole 50, and the ring finger is inserted into the front part 65 of the rear hand hole 60. Further, the index finger is inserted into the front part 55 of the hand hole 50 on the front side, and the little finger is inserted into the rear part 66 of the hand hole 60 on the rear side.

That is, a thick finger (middle finger, ring finger) is inserted into a region where the opening area of the hand holes 50, 60 is large, and a thin finger (index finger, little finger) is inserted into a region where the opening area of the hand hole 50, 60 is small. This reduces the gap between the fingers and the inner edges of the hand-holding holes 50, 60, so that the fingers can be stabilized relative to the hand-holding holes 50, 60.

In this way, the operator can lift the packaging box 1 by hooking the fingers of both hands on the hand holes 50, 60 on the front and rear sides of the left and right side walls 13, 14, as shown in FIG.

In the packaging box 1 as described above, a portion of the side walls 13 and 14 remains between the front and rear hand holes 50 and 60, so the hand hole 13 is large enough to allow insertion of all four fingers. , 14, the reduction in strength of the side walls 13 and 14 can be suppressed. As a result, the load capacity of the packaging box 1 can be increased.

In the hand holes 50 and 60 of the packaging box 1 of this embodiment, the opening area of the part where a thin finger (index finger, little finger) is inserted is reduced to suppress the opening area of the hand hole 50, 60, so that the side wall 13 and 14 can be suppressed from decreasing in strength.

In the packaging box 1 of this embodiment, as shown in FIGS. 5 and 6, the upper edge 50a of the front handle hole 50 is inclined upward from the rear end toward the front end, and the rear handle hole 50 is tilted upward from the rear end toward the front end. The upper edge 60a of the hole 60 is sloped upward from the front end toward the rear end.
With this configuration, when the operator inserts four fingers other than the thumb into the front and rear hand holes 50 and 60 in pairs, the front and rear hand holes 50 and 60 are inserted along the bases of the four fingers. Since the upper edges 50a, 60a of 60 are inclined, it becomes easier to lift the packaging box 1.

In the packaging box 1 of this embodiment, the front and rear hand holes 50 and 60 are arranged on both the front and rear sides of the partition plate 40, and between the front and rear hand holes 50 and 60, the entire side edge of the partition plate 40 is connected to the side wall 13, It is in contact with the inner surface of 14.
This configuration can prevent the lid plates 51, 61 from interfering with the partition plate 40 when the lid plates 51, 61 are pushed inside the body 10 to open the handle holes 50, 60.
Thereby, the inner surfaces of the side walls 13 and 14 can be supported by the entire side edge portion of the partition plate 40. Moreover, the inner surface of the top plate 20 can be supported by the entire upper edge of the partition plate 40. Therefore, the inner surface of the packaging box 1 can be reliably supported by the partition plate 40, and the strength of the packaging box 1 can be increased.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the spirit thereof.
The shapes of the front and rear hand holes are not limited to the front and rear hand holes 50 and 60 of the first embodiment. For example, as shown in FIG. 7, the upper edges 50a, 60a of the front and rear hand holes 50, 60 may be parallel to the upper edge and lower edge of the side wall 14 without being inclined.

Further, as shown in FIG. 8, the upper edge 50a of the front handle hole 50 is inclined downward from the rear end toward the front end, and the upper edge 60a of the rear handle hole 60 is It may also be inclined downward from the rear end toward the rear end.

Further, slits L55 and L65 are formed in the cover plates 51 and 61 of the front and rear hand holes 50 and 60 shown in FIG. 8 from the upper edge to the lower edge. With this configuration, the lid plates 51, 61 can be easily pushed in from the outside.

In the packaging box 1 of this embodiment, as shown in FIG. 4, the opening areas of the front parts 55, 65 and the rear parts 56, 66 of the hand holes 50, 60 are different, but as shown in FIG. The opening areas of the front parts 55, 65 and the rear parts 56, 66 of 50, 60 may be formed to have the same size.

In the packaging box 1 of this embodiment, as shown in FIG. 1, the partition plate 40 is provided in the body 10, but the partition plate 40 may not be provided in the body 10.

In the packaging box 1 of the present embodiment, the top plate 20 and the bottom plate 30 are formed by a plurality of flaps, but the configuration is not limited. For example, the top plate and the bottom plate may be formed by a single flat plate. good.

In the packaging box 1 of this embodiment, the upper opening of the body 10 is closed by the top plate 20, but an opening may be formed in the top plate. Further, the packaging box may be formed into a tray shape without providing a top plate at the upper opening of the body 10.

In the packaging box 1 of this embodiment, the body 10 is formed into a rectangular cylindrical shape, but the shape of the body 10 is not limited. It may be formed into a cylindrical shape.

Although the packaging box 1 of this embodiment is made of cardboard, the packaging box may be made of various known paperboards.

1 Packaging box 10 Body 11 Front end wall 12 Rear end wall 13 Left side wall 14 Right side wall 15 Joint piece 20 Top plate 30 Bottom plate 40 Partition plate 50 Front hand hole 50a Upper edge 51 Lid plate 55 Front part 56 Rear 60 Rear hand hole 60a Upper edge 61 Lid plate 65 Front 66 Rear L51 Ruled line L52 Slit L61 Ruled line L62 Slit S Blank sheet

Claims (3)

A cylindrical body,
a bottom plate provided in the lower opening of the body,
Two hand holes are opened in the left and right side walls of the body, respectively.
The two hand holes are spaced apart from each other in the front-rear direction,
The lower edge of the hand hole protrudes inward from the hand hole at the center, and the hand hole is constricted at the center in the longitudinal direction;
The hand hole on the front side has a rear opening area larger than a front opening area,
The packaging box is characterized in that the opening area of the rear hand hole is formed so that the opening area of the front part is larger than the opening area of the rear part. A cylindrical body,
a bottom plate provided in the lower opening of the body,
Two hand holes are opened in the left and right side walls of the body, respectively.
The two hand holes are spaced apart from each other in the front-rear direction,
The lower edge of the hand hole protrudes inward from the hand hole at the center, and the hand hole is constricted at the center in the longitudinal direction;
The upper edge of the hand hole on the front side slopes upward from the rear end toward the front end,
A packaging box characterized in that an upper edge of the handle hole on the rear side slopes upward from the front end toward the rear end. The packaging box according to claim 1 or claim 2 ,
comprising a partition plate that divides the internal space of the body into front and rear spaces,
The hand hole is closed by a cover plate,
A part of the outer edge of the lid plate is connected to the inner edge of the hand hole via a ruled line,
A packaging box characterized in that a side edge of the partition plate is in contact with an inner surface of the side wall between the front and rear hand holes.

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