Ball packaging box for sports balls

Abstract

To provide a ball for ball game packaging box capable of safely holding a ball for ball game different in size.SOLUTION: In a ball for ball game packaging box, an upper wall, a lower wall, a left side wall and a right side wall which form a storage space for a ball for ball game inside are formed by a folded packaging box sheet, and a flap forming a window supporting a part of the surface in the ball for ball game is provided on a front surface. The box is provided with: an upper holding part which is located on an upper side of the storage space and is elastically deformed upward when contacting the ball for ball game from above; and a lower holding part which is located on a lower side of the storage space and is elastically deformed downward when contacting the ball for ball game from below.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a packaging box for balls for ball games. [Background technology]

[0002] When selling large diameter balls for games such as volleyballs, soccer balls, and basketballs, a method of displaying the balls in a packaging box that allows a portion of the ball to be visible to customers is used to ensure stable display (see, for example, Patent Document 1). The packaging box for game balls in Patent Document 1 is configured such that the top, bottom, left, and right walls of the packaging box are formed by folding a packaging box sheet to form a storage space for the game ball inside, and the front and rear are each provided with flaps that form windows that support a portion of the periphery of the game ball. In this packaging box for game balls, the bottom of the ball is supported by the bottom wall of the packaging box, and portions of the front and rear peripheries of the ball are supported from the front and rear by the edges of the windows formed in the packaging box.

[0003] In the packaging box for balls for ball games described in Patent Document 1, when the bottom of the ball is supported by the bottom wall of the packaging box, the ball rolls around and is unstable. Also, if the ball is supported by a locking edge formed on part of its periphery, the support of the ball becomes unstable when small diameter balls are stored, so it is necessary to prepare packaging boxes for each diameter of ball.

[0004] Patent Document 2 discloses a packaging box for balls for sports that has ball support flaps that hold the balls for sports in a resilient state with a curved surface, allowing the packaging box to be standardized and hold balls of slightly different sizes. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3001136 [Patent Document 2] Patent No. 3969626 Summary of the Invention [Problem to be solved by the invention]

[0006] In the packaging box for balls for games disclosed in Patent Document 2, elastic surfaces that are pressed and curved by the stored ball support the ball from below, and the left and right walls support it from both sides. Therefore, balls with small diameters cannot be supported from both sides, and it cannot be said that the box is adequate to accommodate balls of different sizes.

[0007] The present invention has been made in consideration of the above points, and an object of the present invention is to provide a packaging box for balls for games that can stably hold balls for games of different sizes. [Means for solving the problem]

[0008] The present invention has the following aspects. [1] A packaging box for balls for use in sports, in which an upper wall, a lower wall, a left side wall, and a right side wall are formed inside the packaging box sheet by folding the packaging box sheet, and a flap is provided on the front to form a window that supports part of the surface of the ball for use in sports, and the packaging box for balls for use in sports, is provided with an upper holding part that is located above the storage space and elastically deforms upward when it comes into contact with the ball for use in sports from above, and a lower holding part that is located below the storage space and elastically deforms downward when it comes into contact with the ball for use in sports from below. [2] The upper holding portion has an upper rising wall formed by bending downward in front of the upper wall, and an upper ball support flap whose left and right width dimension decreases as it moves rearward from the upper rising wall, and the upper ball support flap has first left and right mountain fold lines extending from the left and right ends on the front side toward the center of the rear edge, and second left and right mountain fold lines extending between the middle of the first left and right mountain fold lines and the rear edge, and the left and right width dimension of the upper ball support flap is larger than the dimension between the left side wall and the right side wall, and when inserted between the left side wall and the right side wall, it is held elastically deformable upward at a position separated from the upper wall. the lower holding portion has a lower rising wall formed by bending upward in front of the lower wall, and a lower ball support flap whose left and right width dimensions decrease toward the rear from the lower rising wall, the lower ball support flap has third left and right mountain fold lines extending from the left and right ends on the front side toward the center of the rear edge, and fourth left and right mountain fold lines extending between the middle of the third left and right mountain fold lines and the rear edge, and the lower ball support flap is held elastically deformable downward at a position separated from the lower wall when it engages with engaging walls bent from the left side wall and the right side wall, respectively. [3] The left side wall and the right side wall have a first line portion extending downward from the lower end of the upper rising wall toward the rear, and a second line portion extending upward from the upper end of the lower rising wall toward the rear and intersecting with the first line portion as their outlines. The left side wall and the right side wall have a notch window cut out from the front side to an intersection of the first line portion and the second line portion, a perforation extending from the intersection of the first line portion and the second line portion to a rear end at the intersection with the upper wall, and a gap forming wall that forms a first gap portion that extends in the front-rear direction and opens toward the rear when folded with the first line portion as a mountain fold line, between the intersection with the upper wall and the first line portion. and a rear flap that is folded inward in the left-right direction from the rear end, and when torn along the perforation, the packaging box separates into a first part including the left side wall, the right side wall, and the top wall above the perforation, and a second part including the left side wall, the right side wall, and the bottom wall below the perforation, and the separated first part is in a position where the upper rising wall faces upward, with the rear side edges of the left side wall and the right side wall of the second part inserted into the first gap, and the rear flap inserted into the second gap between the top wall and the upper ball support flap. [4] A packaging box for balls for ball games described in any one of [1] to [3], wherein the upper wall has a handle wall with a hole that penetrates horizontally when folded upward. [5] A packaging box for a ball for use in a sport described in any one of [1] to [4], which has a plurality of rear flaps on the rear surface that, when engaged, form a rear window that supports a portion of the surface of the ball for use in a sport, and the rear flaps have cutout walls that form cutouts when folded in a position facing each other across the rear window. [Effects of the Invention]

[0009] The present invention can provide a packaging box for balls for games that can stably hold balls for games of slightly different sizes. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a front perspective view of an assembled game ball packaging box according to the present invention. [Figure 2] 2 is a schematic cross-sectional view of the packaging box 1 in an assembled state, taken perpendicular to the left-right direction. [Figure 3] 2 is a cross-sectional view taken along line AA in FIG. 1 as seen from the rear side. [Figure 4] FIG. 2 is a plan view of the packaging box sheet 2 before assembly into the packaging box 1 for balls for ball games. [Figure 5] FIG. 2 is a rear view of the packaging box 1 in an assembled state. [Figure 6] 10A and 10B are diagrams showing the procedure for removing the ball B for a ball game from the packaging box 1. FIG. [Figure 7] 10A and 10B are diagrams showing the procedure for removing the ball B for a ball game from the packaging box 1. FIG. [Figure 8] 10A and 10B are diagrams showing the procedure for removing the ball B for a ball game from the packaging box 1. FIG. [Figure 9] 10A and 10B are diagrams showing the procedure for displaying the ball B with the top side open. [Figure 10] 10A and 10B are diagrams showing the procedure for displaying the ball B with the top side open. [Figure 11] 10A and 10B are diagrams showing the procedure for displaying the ball B with the top side open. [Figure 12] 10A and 10B are diagrams showing the procedure for displaying the ball B with the top side open. [Figure 13] 10A and 10B are diagrams showing the procedure for displaying the ball B with the top side open. [Figure 14] FIG. 2 is a cross-sectional view taken along line CC in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of a packaging box for balls for ball games according to the present invention will be described with reference to FIGS. The following embodiment shows one aspect of the present invention, does not limit the present invention, and can be modified as desired within the scope of the technical concept of the present invention. In addition, in the following drawings, the scale and number of each structure are different from the actual structure to make each configuration easier to understand.

[0012] Fig. 1 is a front perspective view of an assembled ball packaging box 1 (hereinafter referred to as packaging box 1). Fig. 2 is a schematic cross-sectional view of the assembled packaging box 1, perpendicular to the left-right direction. Fig. 3 is a cross-sectional view taken along line AA in Fig. 1, seen from the rear. Fig. 4 is a plan view of the packaging box sheet 2 before assembly into the ball packaging box 1. Fig. 4 shows a back view of the packaging box sheet 2.

[0013] As shown in Figures 1 and 2, game ball packaging box 1 defines storage space 1A for game ball B inside by folded packaging box sheet 2. Packaging box 1 has an upper wall 3, a lower wall 4, a left side wall 5, and a right side wall 6. Packaging box 1 is provided with a flap that forms a window 7 on the front side and a flap that forms a rear window 8 on the rear side. Window 7 and rear window 8 support a portion of the surface of game ball B (details will be described later).

[0014] In the following description, the direction in which the upper wall 3 and the lower wall 4 face each other is referred to as the up-down direction, and the direction in which the left wall 5 and the right wall 6 face each other is referred to as the left-right direction. The direction perpendicular to the up-down direction and the left-right direction is referred to as the front-rear direction. In the front-rear direction, the side where the window 7 is provided is referred to as the front side, and the side where the rear window 8 is provided is referred to as the rear side.

[0015] The packaging box 1 includes an upper holding portion 9 and a lower holding portion 10. The upper holding portion 9 is located on the upper side of the storage space 1A, and elastically deforms upward when it comes into contact with the game ball B from above. The lower holding portion 10 is located on the lower side of the storage space 1A, and elastically deforms downward when it comes into contact with the game ball B from below.

[0016] The upper holding portion 9 has an upper rising wall 11A formed by bending downward in the front portion of the upper wall 3, and an upper ball support flap 12A extending from the upper rising wall 11A at an incline upward as it moves rearward. The upper ball support flap 12A extends rearward from the upper rising wall 11A. In the drawing, the upper ball support flap 12A is shown extending at an incline upward as it moves rearward, but this is not limited to this configuration and the flap may extend horizontally or may extend at an incline downward as it moves rearward.

[0017] As shown in FIG. 4, the rear end of the upper ball support flap 12A has a width L2 slightly larger than the distance L1 between the left side wall 5 and the right side wall 6. The upper ball support flap 12A has first left and right mountain fold lines 54A extending from the left and right ends of the front side toward the center of the rear edge, second left and right mountain fold lines 56A extending between the middle of the first left and right mountain fold lines 54A and the rear edge, elastically deformable portions 57A positioned on the inside of the first left and right mountain fold lines 54A in the left-right direction, and outer portions 65A positioned on the outside of the first left and right mountain fold lines 54A in the left-right direction. The left and right width of the elastically deformable portions 57A decreases toward the rear. As shown in FIG. 3, the outer portions 65A extend upward as they move away from the first left and right mountain fold lines 54A.

[0018] Horizontal flaps 58 extend from the left and right sides of the upper ball support flap 12A and are folded downward along folding lines 59. When a ball B is stored in the flap, the upper ball support flap 12A elastically deforms upward as shown by the dashed lines in FIGS. 2 and 3 . As the upper ball support flap 12A elastically deforms upward, the left and right ends of the rear edge 55A contact the left and right walls 5 and 6, respectively. As the left and right ends of the rear edge 55A contact the left and right walls 5 and 6, the outer portions 65A function as support legs, allowing the upper ball support flap 12A to remain spaced apart from the top wall 3. That is, when the upper ball support flap 12A is inserted between the left and right walls 5 and 6, a second gap 77 is formed between the flap and the top wall 3, and the flap is held elastically deformable upward at a position spaced apart from the top wall 3. The second gap 77 extends in the front-rear direction and opens rearward.

[0019] Gap-forming walls 61 are connected to outer portions 65A of upper ball support flap 12A, each of which is folded upward from left side wall 5 and right side wall 6 along folding lines 61a shown in FIG. 4. Gap-forming wall 61 is folded upward along folding lines 61a, with first line portion 81 (described later) serving as a mountain fold. A tip wall 61b provided at the tip of gap-forming wall 61 is inserted into a slit 75 formed on folding line 59 in upper ball support flap 12A. As shown in FIG. 3, first gaps 76 are formed between the folded gap-forming wall 61 and left side wall 5 and between the folded gap-forming wall 61 and right side wall 6, respectively. First gaps 76 extend in the front-rear direction and open rearward.

[0020] The lower holding portion 10 has a lower rising wall 11B formed by bending upward in front of the lower wall 4, and a lower ball support flap 12B whose width decreases from the lower rising wall 11B toward the rear. The lower ball support flap 12B extends rearward from the lower rising wall 11B.

[0021] The lower ball support flap 12B has third mountain fold lines 54B extending from the left and right ends of the front side toward the center of the rear edge, fourth mountain fold lines 56B extending between the middle of the third mountain fold lines 54B and the rear edge, elastically deformable portions 57B positioned laterally inward of the third mountain fold lines 54B, and outer portions 65B positioned laterally outward of the third mountain fold lines 54B. The width of the elastically deformable portions 57B decreases toward the rear. As shown in FIG. 3, the outer portions 65B extend downward as they move away from the third mountain fold lines 54B.

[0022] Engagement walls 70 are formed below the lower ball support flap 12B, projecting from the left side wall 5 and the right side wall 6, respectively, and are folded downward along folding lines 70a shown in FIG. 4. The engagement wall 70 has a joining wall 71 at its tip. When folded along folding lines 71a, the joining wall 71 is joined to the lower wall 4 from above, and its outer ends in the left-right direction contact the left side wall 5 and the right side wall 6. A slit 72 is formed between the engagement wall 70 and the joining wall 71. When folded along folding line 71a, a protrusion 71b is formed in the joining wall 71 by the slit 72. When folded along folding line 71a, the protrusion 71b is separated by the slit 72, thereby forming a groove 70b that opens to the rear in the engagement wall 70, as shown in FIG. 1. Groove 70b engages with edge 73a of protruding portion 73, which protrudes from rear end 55B of lower ball support flap 12B to both the left and right sides, from the rear side. Lower ball support flap 12B is held in a position away from bottom wall 4 so as to be elastically deformable downward as front edge 73a of protruding portion 73 engages with groove 70b of engagement wall 70.

[0023] Hereinafter, the packaging box 1 will be described in further detail with reference to the packaging box sheet 2 in FIG. In the packaging box sheet 2, the upper wall 3, lower wall 4, left side wall 5 and right side wall 6 are formed in a continuous manner, and the box is formed by folding along folding lines 15, 16 and 17, folding a joining flap 18 formed at the end of the upper wall 3 along folding line 19, and adhering the joining flap 18 along the lower end of the right side wall 6.

[0024] Rear flaps 20, 21, 22, and 23 are formed at the rear ends of the upper wall 3, lower wall 4, left side wall 5, and right side wall 6, respectively. Each flap is formed with an inwardly curved ball locking edge 24, 25, 26, and 27, respectively. On both sides of the rear flaps 20 and 21 of the upper wall 3 and the lower wall 4, there are formed locking recesses 28 recessed at both ends, and locking projections 29 projecting laterally from the tip side of the locking recesses 28. Furthermore, on the rear flaps 22 and 23 of the left side wall 5 and right side wall 6, there are formed locking recesses 30 recessed at both sides of the ball locking edges 26 and 27, and locking projections 31 forming the outer edges of the locking recesses 30.

[0025] The rear flaps 20, 21, 22, and 23 are folded inward at approximately right angles along folding lines 32, 33, 34, and 35, respectively. As they are folded, the locking recesses 28 and 30 engage with each other, and in this engaged state, the rear flaps are assembled so that the locking projections 29 are located on the outer surfaces of the rear flaps 22 and 23, respectively, and the locking projections 31 are located on the outer surfaces of the rear flaps 20 and 21, respectively. In this case, the locking projections 29 may be located on the inner surfaces of the rear flaps 22 and 23, respectively, and the locking projections 31 may be located on the inner surfaces of the rear flaps 20 and 21, respectively. As a result, by combining the ball locking edges 24, 25, 26, and 27 of the rear flaps 20, 21, 22, and 23, a rear window 8 having an approximately circular shape that is smaller than the diameter of the game ball B and into which a portion of the surface of the game ball B fits is formed on the rear surface of the packaging box 1, as shown in Figure 5.

[0026] The rear flaps 22, 23 each have a notch 74 at a position facing each other across the rear window 8. The notch 74 forms a notch in the rear flaps 22, 23 that connects to the rear window 8 when the rear flaps 22, 23 are folded forward.

[0027] As shown in FIG. 4, the upper wall 3 has two handle pieces 78. The handle pieces 78 are semicircular in shape in a plan view. The semicircular ends of the handle pieces 78 face each other with a gap between them. The contours of the handle pieces 78 are formed by perforations, except for the ends. A push-in portion 78a is provided at the circumferential center of the handle pieces 78 and on the radially outer side. The boundary between the handle pieces 78 and the push-in portion 78a is formed by perforations. The boundary between the upper wall 3 and the push-in portion 78a is formed by perforations, except for an edge 78c of the push-in portion 78a that is not connected to the handle piece 78.

[0028] Fig. 14 is a cross-sectional view taken along line CC in Fig. 1. As shown in Fig. 14, when the push-in portion 78a is pushed downward from above, a finger is inserted into a hole formed in the upper wall 3, and the arc portion of the handle piece 78 is grasped and pulled upward to bend it. The opposing handle pieces 78 extending upward from the upper wall 3 each have a hole 78b penetrating horizontally. This allows the handle piece 78 to be grasped by inserting a finger into the hole 78b, making the packaging box 1 suitable for carrying.

[0029] In order to make it easier to see the game ball B from above and from the left and right of the packaging box 1, the bottom wall 4 has a length that extends forward further than the left wall 5, right wall 6, and top wall 3. In addition, in order to make it easier to see the game ball B from the left and right of the packaging box 1, the left wall 5 and right wall 6 have cutout windows 80.

[0030] 2, the cutout window 80 is outlined by a first line portion 81 that extends downward from the lower end of the upper rising wall 11A toward the rear, and a second line portion 82 that extends upward from the upper end of the lower rising wall 11B toward the rear and intersects with the first line portion 81, and is cut out from the front to the intersection of the first line portion 81 and the second line portion 82. The provision of the cutout window 80 makes it easier to see the ball B from left to right as well as forward.

[0031] The game ball B is placed in the packaging box 1 from the rear side of the packaging box 1. When storing a ball B, the following methods can be selected: a method in which the rear flaps 20, 21, 22, and 23 are not folded inward at the folding lines 32, 33, 34, and 35 and are open toward the rear; a method in which the rear flaps 20, 21, 22, and 23 are folded inward at approximately right angles at the folding lines 32, 33, 34, and 35, respectively, but the locking protrusions 29 and 31 are not engaged with the rear flaps 20, 21, 22, and 23, respectively; and a method in which the rear flaps 20, 21, 22, and 23 are folded inward at approximately right angles at the folding lines 32, 33, 34, and 35, respectively, and the locking protrusions 29 and 31 are engaged with the rear flaps 20, 21, 22, and 23, respectively, and the ball B is stored in an assembled state.

[0032] When removing a game ball B from the packaging box 1, as shown in Fig. 6, the index finger through the outer fingers are hooked on the left and right walls 6, and the thumb is used to press in the notch 74. By pressing in the notch 74, notches are formed in the ball-retaining edges 26, 27 of the rear flaps 22, 23. Next, as shown in Fig. 7, the inner ends of the rear flaps 22, 23 are pulled upward with the thumb, using the fingers other than the thumb as a fulcrum, thereby releasing the engagement between the rear flaps 20, 21, 22, and 23. After the engagement between the rear flaps 20, 21, 22, and 23 is released, the rear flaps 20, 21, 22, and 23 are further pulled up, opening the rear flaps 20, 21, 22, and 23 to expose the storage space 1A. In this way, the packaging box 1 of this embodiment is provided with cutout pieces 74 that form cutouts in the rear flaps 22, 23 when pushed in, making it easy to remove the ball B for the ball game from the packaging box 1.

[0033] In addition to displaying the balls B through the window 7 and the notched window 80, the packaging box 1 of this embodiment can also display the balls B with the top open. When displaying the balls B with the top open, the packaging box 1 is divided into two halves, top and bottom. The packaging box 1 is divided into two halves by breaking it along perforations 79 formed in the left wall 5 and the right wall 6, as shown in Figures 1 and 2.

[0034] Perforation 79 extends in a wavy manner on left side wall 5 and right side wall 6 from the intersection of first line portion 81 and second line portion 82 to the rear end at the intersection with top wall 3. As shown in FIG. 9 , when packaging box 1 is torn at perforation 79, it is separated into a first portion 91 including left side wall 5, right side wall 6, and top wall 3 above perforation 79, and a second portion 92 including left side wall 5, right side wall 6, and bottom wall 4 below perforation 79 (left side wall 5 and bottom wall 4 are not shown in FIG. 9 ). Separation of first portion 91 and second portion 92 is performed by rotating the front side of first portion 91 backward around the rear end of perforation 79, as shown in FIG. 10 .

[0035] As shown in Fig. 11, the separated first portion 91 is moved downward with the upper rising wall 11A facing upward, and as shown in Fig. 12, the rear edge portions 5a, 6a of the left side wall 5 and right side wall 6 of the second portion 92 are inserted into the first gap 76 between the left side wall 5 and right side wall 6 and the gap forming wall 61, and the rear flaps 22, 23 are inserted into the second gap 77 between the top wall 3 and the upper ball support flap 12A (Fig. 12 only shows the insertion of the rear edge portion 6a of the right side wall 6 into the first gap 76). This results in a packaging box 1 in an exhibition state with the top side of the ball B open.

[0036] As described above, in the packaging box 1 of this embodiment, when the upper holding portion 9 contacts the ball B from above, it holds the ball B from above by its elastic restoring force, and when the lower holding portion 10 contacts the ball B from below, it holds the ball B from below by its elastic restoring force, so that it is possible to stably hold balls B of different sizes.

[0037] Furthermore, in the packaging box 1 of this embodiment, even if the first part 91 is separated to display the ball B with the upper side open, the first part 91 can be attached to the second part 92 without being discarded, thereby reducing waste and providing a packaging box 1 that is environmentally friendly.

[0038] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to these examples. The shapes and combinations of the components shown in the above examples are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present invention. [Explanation of symbols]

[0039] 1...ball packaging box (packaging box) for ball games, 1A...storage space, 2...packaging box sheet, 3...upper wall, 4...lower wall, 5...left side wall, 6...right side wall, 7...window, 8...rear window, 9...upper holding portion, 10...lower holding portion, 11A...upper rising wall, 11B...lower rising wall, 12A...upper ball support flap, 12B...lower ball support flap, 54A...first left and right mountain fold line, 54B...third left and right mountain fold line, 56A...second left and right mountain fold line, 56B...fourth left and right mountain fold line, 61...gap forming wall, 61a...folding line (mountain fold line), 70...engagement wall, 74...cutout piece, 76...first gap portion, 77...second gap portion, 78...handle piece, 78b...hole portion, 79...perforation, 80...notch window, 81...first line portion, 82...second line portion, 91...first portion, 92...second portion, B...ball for ball games

Claims

1. A packaging box for a ball for use in a game, in which an upper wall, a lower wall, a left side wall, and a right side wall that form a storage space for a ball for use in a game inside are formed by folded packaging box sheets, and a flap that forms a window that supports a part of the surface of the ball for use in a game is provided on the front surface, an upper holding portion located on an upper side of the storage space and elastically deforming upward when contacting the ball from above; a lower holding portion located below the storage space and elastically deforming downward when contacting the ball from below; Equipped with The upper holding portion is an upper rising wall formed by bending downward at a front portion of the upper wall; an upper ball support flap whose width decreases from the upper rising wall toward the rear, The upper ball support flap is first left and right mountain fold lines extending from the left and right ends on the front side toward the center of the rear edge; a second left and right mountain fold line extending between an intermediate portion of the first left and right mountain fold line and the rear edge; the upper ball support flap has a width dimension greater than the dimension between the left side wall and the right side wall, and when inserted between the left side wall and the right side wall, is held in an upwardly elastically deformable position at a distance from the upper wall, The lower holding portion is a lower rising wall formed by bending upward at a front portion of the lower wall; a lower ball support flap whose width decreases from the lower rising wall toward the rear, The lower ball support flap is third left and right mountain fold lines extending from the left and right ends on the front side toward the center of the rear edge; a fourth left and right mountain fold line extending between an intermediate portion of the third left and right mountain fold line and the rear edge; The lower ball support flap is held elastically deformably downward at a position separated from the lower wall when engaged with the engaging walls bent from the left side wall and the right side wall, in the packaging box for balls for ball games.

2. The left side wall and the right side wall are a cutout window having a contour defined by a first line portion extending downward from the lower end of the upper rising wall toward the rear and a second line portion extending upward from the upper end of the lower rising wall toward the rear and intersecting with the first line portion, the cutout window being cut out from the front side to an intersection of the first line portion and the second line portion; a perforation extending from an intersection of the first line portion and the second line portion to a rear end at an intersection with the upper wall; a gap forming wall that forms a first gap portion that extends in the front-rear direction and opens rearward between an intersection with the upper wall and the first line portion when the first line portion is folded along a mountain fold line; a rear flap that can be folded inward in the left-right direction from the rear end; and When broken at the perforation, the container is separated into a first portion including the left side wall, the right side wall, and the top wall above the perforation, and a second portion including the left side wall, the right side wall, and the bottom wall below the perforation, the separated first portion is oriented such that the upper rising wall faces upward, and rear edge portions of the left side wall and the right side wall of the second portion are inserted into the first gap; the rear flap is inserted into a second gap between the top wall and the upper ball support flap; The packaging box for balls for ball games according to claim 1.

3. The upper wall has a handle piece having a hole penetrating horizontally when folded upward. The packaging box for balls for ball games according to claim 1 or 2.

4. a plurality of rear flaps are provided on a rear surface thereof, when engaged, to form a rear window that supports a portion of the surface of the game ball; The rear flap has a notch piece at a position facing the rear window, in which a notch is formed when the rear flap is folded. The packaging box for balls for ball games according to claim 1 or 2.

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