JP2009241948A - Inner box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To standardize inner boxes used for products of different shapes and sizes. <P>SOLUTION: This inner box is mounted within an outer box for packaging, and is provided with four sidewalls 1 to 4 enclosing a rectangular parallelepiped space. The four sidewalls 1 to 4 are constituted of the two first sidewalls 1, 3 opposite each other and the two second sidewalls 2, 4 opposite each other. The inner box is further provided with a bending part R21 bent toward the other second sidewall 4 at the upper end 2a of the second sidewall 2. The bending part is formed with a first insertion part 22 by bending its extremity end toward the bottom part of the space. The first sidewalls 1, 3 are formed with a pair of plural first slits for use in inserting a first insertion part 22 from the upper ends 1a, 3a toward the lower end edges 1b, 3b. Then, the first insertion part 22 is formed with a pair of second slits for use in inserting the first sidewalls 1, 3 from its extremity end 22a toward its base end. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an inner box, and more particularly to an inner box used as a cushioning material for a product such as a digital camera.

  Conventionally, products such as a digital camera are stored in a single packaging box together with accessory parts. Attached parts include, for example, rechargeable batteries and chargers, AC (Alternating Current) cord, USB (Universal Serial Bus) cable, AV (Audio-Visual) cable, instruction manual, CD-ROM (Compact Disc Read-Only Memory) and so on.

  If vibration is applied to the packaging box in a state where the product and its accessory parts are stored, the product and the accessory parts may come into contact with each other in the packaging box, and the product may be damaged. Therefore, conventionally, an inner box as a cushioning material is provided between the product and the accessory part to prevent contact between the product and the accessory part.

In general, a flat corrugated cardboard punched into a predetermined mold is used as an inner box. For example, Patent Documents 1 to 3 listed below disclose techniques for forming an inner box by using only one flat cardboard and bending it.
Japanese Patent Laid-Open No. 9-301351 JP 2000-255559 A JP 2002-104527 A

  However, since the proposed inner box has been designed according to the shape and dimensions of the product, if the shape and dimensions of the product are different, it is necessary to produce the inner box with a different design for each product. It was. Specifically, it was necessary to punch flat cardboard with different molds for each product. Producing the inner box with a different design for each product complicates the manufacturing process and further increases the cost.

  This invention is made | formed in view of the situation mentioned above, and it aims at sharing the inner box used for the product from which a shape and a dimension differ.

  The inner box according to the present invention is an inner box installed inside an outer box for packing, and includes four side wall parts surrounding a rectangular parallelepiped space, and the four side wall parts (1 to 4) are The upper end of at least one second side wall (2) is composed of two first side walls (1, 3) facing each other and two second side walls (2, 4) facing each other. A bent portion (R21) bent toward the other second side wall portion (4) at the edge (2a) is further provided. A first insertion portion (22) is formed in the bent portion by bending the tip portion toward the bottom of the space. The first side wall portion has a plurality of pairs of first slits (111, 311, 112, 312) for inserting the first insertion portion from the upper edge (1a; 3a) toward the lower edge (1b; 3b). It is formed in the place. The first insertion portion (22) is formed with a pair of second slits (221, 222) for inserting the two first side wall portions from the leading edge (22a) toward the base end portion. .

  According to the said inner box, a 1st insertion part can be selectively inserted with respect to the said pair of slit by forming a pair of 1st slit corresponding to a 1st insertion part in multiple places. Further, by using the first and second slits, the first insertion portion and the first side wall portion can be assembled in a cross shape, so that a predetermined positional relationship between the first insertion portion and the first side wall portion is maintained. can do.

  In the specific first aspect, the bent portion (R21) is bent at the upper edge of two adjacent first slits (111, 112; 311, 312) among the first slits belonging to the same first side wall portion. The length (L1) of the first slit (111, 311) closer to the second side wall (2) is larger than the distance (L2) between the two adjacent first slits. More specifically, the length (L1) of the first slit (111) closer to the second side wall (2) is the distance (L2) between the two adjacent first slits (111, 112). And the length (L3) of the first slit (112) farther from the second side wall portion.

  According to the specific first aspect, when the first insertion portion is inserted into the first slit closer to the second side wall portion, the first slit is opened from the open end of the closer first slit. The second slit can be formed so that the closed end comes to a position that has fallen more than the distance. According to the second slit, even when the first insertion portion is inserted into the first slit far from the second side wall, the second slit is lowered by a predetermined distance from the open end of the far first slit. The closed end of the second slit is located at the position.

  Further, the fold line (R21) has a crease according to the distance (L111, L112) from the end (11a) of the upper edge (1a) of the first side wall (1) to the first slit (111, 112). Is formed. Thereby, the operator who produces an inner box is easy to recognize a bending position.

  Furthermore, the distance (L4; L5) between the crease formed in the bent portion (R21) and the second slit (221) is substantially the same as any length (L1; L3) of the first slit. Thereby, when the 1st insertion part formed by bend | folding a bending part in the said crease | fold is inserted in the said 1st slit, the closed end of a 2nd slit corresponds with the closed end of a 1st slit.

  In a specific second embodiment, the bent portions (R21, R41) are bent at both upper end edges (2a, 4a) of the second side wall portions (2, 4), and the first insertion portions (22, 42). Are formed by bending the respective leading ends of the bent portions toward the bottom of the space. And two 1st slit groups which consist of a pair of 1st slit formed in a plurality of places are formed in the 1st side wall part (1, 3), and the 1st insertion part is 1 in the two groups concerned. It corresponds one by one.

  In a specific third embodiment, the upper end edge (1a) of one first side wall (1) is further provided with a folded portion (R11) folded outward, and a part of the folded portion is provided on the other first side wall. The second insertion part (12) is formed by cutting up toward the part (3). A pair of third slits (I11, 316) for penetrating the second insertion portion is formed in the two first side wall portions.

  According to the specific third aspect, the bottom surface of the inner box can be formed at the height position of the third slit by inserting the second insertion portion into both of the third slits. The depth of the inner box can be changed.

  More specifically, the length (L6) from the root to the tip of the second insertion part (12) formed by cutting and raising a part of the folded part is the first side wall part where the folded part is folded. Is less than twice the distance (L7) from the upper edge (1a) to the root. Thereby, the insertion of the second insertion portion into the third slit formed in the side wall portion where the folded portion is folded back can be performed from a direction inclined substantially vertically or obliquely with respect to the side wall portion.

  Another inner box according to the present invention is an inner box installed inside an outer box for packing, and includes four side wall portions surrounding a rectangular parallelepiped space. ) Is composed of two first side wall portions (1, 3) facing each other and two second side wall portions (2, 4) facing each other, and one of the first side wall portions (1) The upper end edge (1a) further includes a folded portion (11) folded outward. The insertion portion (12) is formed by cutting and raising a part of the folded portion toward the other first side wall portion (3). And a pair of 3rd slits (I11,316) for penetrating the 2nd insertion part are formed in the 1st side wall part.

  According to the inner box according to the present invention, even if the shape and size are different for each product, a cushioning material suitable for the shape and size of the product can be obtained from the same inner box. For this reason, an inner box can be made common in the product from which a shape and a dimension differ.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  The inner box according to the embodiment of the present invention is produced by bending a single plate and is used as a cushioning material for a product to be packed, for example, by being installed inside the outer box for packing. The inner box forms a rectangular parallelepiped internal space as shown in FIG. The inner box includes four side wall portions 1 to 4 that surround the internal space, and the four side wall portions 1 to 4 include two first side wall portions 1 and 3 that face each other and two second side wall portions that face each other. 2 side wall parts 2 and 4 are comprised.

  A method for producing the inner box will be described with reference to FIG. 2 showing the surface of the developed inner box. The inner box manufacturing method includes steps (a) to (g). Hereinafter, with respect to the method of folding the plate material, a folding method in which the surface of the plate material is a valley is referred to as “valley folding”, and a folding method in which the surface of the plate material is a mountain is referred to as “mountain folding”.

Step (a);
First, a plate material having the shape shown in FIG. 2 is produced by punching or the like. Plate portions R5, R1 to R4, R11 to R41 are formed on the plate material. The plate portion R5 has a rectangular shape surrounded by the lines A1 to A4. The plate portions R1 to R4 are all connected to the plate portion R5, and the boundaries between the plate portions R1 to R4 and the plate portion R5 are represented by lines 1 to A4. The plate material is creased along the lines A1 to A4.

  Further, the plate material is formed with cuts along the C21 line and the C22 line, and the plate portion R2 is separated from the plate portions R1 and R3. Similarly, a cut is formed in the plate material along the C41 line and the C42 line, and the plate portion R4 is separated from the plate portions R1 and R3. The C21 line and the C22 line extend along the A2 line at positions on both sides of the A2 line, and the C41 line and the C42 line extend along the A4 line at positions on both sides of the A4 line.

  The plate portion R11 is connected to the plate portion R1, and the boundary between the plate portion R11 and the plate portion R1 is represented by a B1 line substantially parallel to the A1 line. The plate portion R21 is connected to the plate portion R2, and the boundary between the plate portion R21 and the plate portion R2 is represented by a D2 line substantially parallel to the A2 line. The plate portion R31 is connected to the plate portion R3, and the boundary between the plate portion R31 and the plate portion R3 is represented by a B3 line substantially parallel to the A3 line. The plate portion R41 is connected to the plate portion R4, and the boundary between the plate portion R41 and the plate portion R4 is represented by a D4 line substantially parallel to the A4 line. The plate material is creased along each of the B1, B2, D1, and D2 lines.

  A distance L15 from the A1 line to the B1 line and a distance L35 from the A3 line to the B1 line are substantially the same, and a distance L21 from the A2 line to the D2 line is substantially the same as the distances L15 and L35. The distance L41 from the A4 line to the D4 line is also substantially the same as the distances L15 and L35.

Plate portions R1, R11;
In the plate portion R1 and the plate portion R11, slits H11 to H14 are formed across these. All of the slits H11 to H14 are formed symmetrically about a straight line B101 including the B1 line as an axis (symmetric axis). The slits H11 to H14 are arranged in this order, and the slit H11 is closer to the plate portion 2. The slits H11 and H14 are formed longer than the slits H12 and H13, respectively.

  A hole J1 is further formed in the plate portion R1 and the plate portion R11 across the plate portion R1 and the plate portion R11. The hole J1 is symmetrically formed with the straight line B101 as an axis (symmetric axis) at a position between the slit H12 and the slit H13.

  A plate portion R12 is formed on the plate portion R11. The plate part R12 is surrounded by the leading edge e1 of the plate part R11, the G11 line extending substantially parallel to the A1 line, and the G12 line and the G13 line extending from both ends of the G11 line to the leading edge e1. The plate portion R1 is creased along the line G11, and cuts are formed along the lines G12 and G13.

  A slit I11 is formed in the plate portion R1. The slit I11 extends substantially parallel to the A1 line at a position symmetrical to the G11 line with respect to the B1 line. The length of the slit I11 is substantially the same as or smaller than the width of the plate portion R12.

Plate portions R3, R31;
In the plate portion R3 and the plate portion R31, slits H31 to H34 are formed across these. All of the slits H31 to H34 are formed symmetrically about a straight line B301 including the line B3 as an axis (symmetric axis). Moreover, the slits H31 to H34 are formed so as to be symmetrical with the slits H11 to H14 with the center line A105 of the plate portion R5 as an axis (target axis). The slits H31 to H34 are arranged in this order, and the slit H31 is closer to the plate part 2. The slits H31 and H34 are formed longer than the slits H32 and H33, respectively.

  A hole J3 is further formed in the plate portion R3 and the plate portion R31 across the plate portion R3 and the plate portion R31. The hole J3 is formed symmetrically with respect to the straight line B301 as an axis (symmetric axis) at a position between the slit H32 and the slit H33.

  In addition, slits I31 and I32 are formed in each of the plate portion R3 and the plate portion R31. The slits I31 and I32 both extend substantially parallel to the A3 line, and are formed symmetrically about the B3 line as an axis (symmetric axis). Moreover, the slit I31 is formed to be symmetrical with the slit I11 with the center line A105 as an axis (target axis).

Plate portions R2, R21;
A plate portion R22 is formed across the plate portion R2 and the plate portion R21. The plate portion R22 is surrounded by a C23 line and a C24 line extending substantially perpendicular to the D2 line, and an F23 line and an F25 line extending substantially parallel to the A2 line from both ends of the C23 line to both ends of the C24 line. The plate portion R2 and the plate portion R21 are creased along the F23 line and the F25 line, respectively, and cuts are formed along the C23 line and the C24 line. The plate portion R22 is creased along the F24 line extending substantially parallel to the F23 line from the C23 line to the C24 line at a position between the F23 line and the F25 line.

  The plate portion R21 is creased along the lines E21 and E22. The E21 line and the E22 line are located in this order from the D2 line side, and extend substantially parallel to the D2 line. The distance L22 from the D2 line to the E21 line is the distance L11 from the side edge e11 of the plate portion R11 (or R1) to the slit H11 and the side edge e31 of the plate portion R31 (or R3) to the slit H31. Is substantially the same as each of the distances L31. The distance L23 from the line D2 to the line E22 is substantially the same as the distance L12 from the side edge e11 to the slit H12 and the distance L32 from the side edge e31 to the slit H32. That is, the fold lines on the E21 line and the E22 line are formed according to the distances L11 and L12 (or L31 and L32).

  Slits H21 and H22 are formed in the plate portion R21. Specifically, the slits H21 and H22 are on the opposite side of the plate portion R2 with respect to the E22 line, and at a position slightly shifted outward from the straight line A103 including the A3 line and the straight line A101 including the A1 line, It is formed on the plate portion R21.

  Further, the plate portion R21 is formed with notches cut along lines C25 and C26, and plate portions R23 and R24. The C25 line and the C26 line respectively extend substantially parallel to the E22 line from the opposite end of the slits H21 and H22 to the opposite end edges e21 and e22 of the plate portion R21.

  The plate portion R23 is surrounded by the leading edge e2 of the plate portion R21, the side edge e21 of the plate portion R21, the C25 line, and the F21 line extending substantially parallel to the straight line A103. The plate portion R24 is surrounded by the leading edge e2 of the plate portion R21, the side edge e22 of the plate portion R21, the C26 line, and the F22 line extending substantially parallel to the straight line A101. The plate portion R21 is creased along the lines F21 and F22.

Plate portions R4, R41;
A plate portion R42 is formed across the plate portion R4 and the plate portion R41. The plate portion R42 is surrounded by a C43 line and a C44 line extending substantially perpendicular to the D4 line, and an F43 line and an F45 line extending substantially parallel to the A4 line from both ends of the C43 line to both ends of the C44 line. The plate portion R4 and the plate portion R41 are creased along lines F43 and F45, respectively, and cuts are formed along lines C43 and C44. The plate portion R42 is creased along the F44 line extending substantially parallel to the F43 line from the C43 line to the C44 line at a position between the F43 line and the F45 line.

  The plate portion R41 is creased along lines E41 and E42. The E41 line and the E42 line are located in this order from the D4 line side, and extend substantially parallel to the D4 line. The distance L42 from the D4 line to the E41 line is the distance L14 from the side edge e12 of the plate portion R11 (or R1) to the slit H14, and the side edge e32 of the plate portion R31 (or R3) to the slit H34. And substantially the same as each of the distances L34. The distance L43 from the D4 line to the E42 line is substantially the same as the distance L13 from the side edge e12 to the slit H13 and the distance L33 from the side edge e32 to the slit H33. That is, the fold lines on the E41 line and the E42 line are formed according to the distances L13 and L14 (or L33 and L34).

  Slits H41 and H42 are formed in the plate portion R41. Specifically, the slits H41 and H42 are on the side opposite to the plate portion R4 with respect to the E42 line, and at a position slightly shifted outward from the straight line A103 including the A3 line and the straight line A101 including the A1 line, It is formed on the plate portion R41.

  Further, the plate portion R41 is formed with notches cut along lines C45 and C46, and plate portions R43 and R44. The C45 line and the C46 line respectively extend substantially in parallel to the E42 line from the end opposite to the E42 line of the slits H41 and H42 to both side edges e41 and e42 of the plate portion R41.

  The plate portion R43 is surrounded by the leading edge e4 of the plate portion R41, the side edge e41 of the plate portion R41, the C45 line, and the F41 line extending substantially parallel to the straight line A103. The plate portion R44 is surrounded by the leading edge e4 of the plate portion R41, the side edge e42 of the plate portion R41, the C46 line, and the F42 line extending substantially parallel to the straight line A101. The plate portion R41 is creased along the lines F41 and F42.

  A1 to A4, B1, B3, D2, D4, E21, E22, E41, E42, F21 to F25, F41 to F45, and G11 The attached crease is used in steps (b) to (g) described later, and facilitates bending at a predetermined position.

Step (b);
As shown in FIG. 3, the plate material is “valley folded” along the lines A1 to A4, and the plate portions R1 to R4 are raised vertically to the plate portion R5. As a result, the plate portion R1 and the plate portion R3 face each other, and the plate portion R2 and the plate portion R4 face each other. That is, the bottom wall portion 5 of the inner box is formed by the plate portion R5, the first side wall portions 1 and 3 of the inner box are formed by the plate portions R1 and R3, and the second side wall portion of the inner box is formed by the plate portions R2 and R4. 2, 4 are formed. In FIG. 3, only the plate portion R4 is in a state before starting.

  As described in the step (a), the distance L15 and the distance L35 are substantially the same, and the distance L21 and the distance L41 are substantially the same as the distances L15 and L35. Therefore, when the plate portions R1 to R4 are raised. The B1, D2, B3, and D4 lines are located at substantially the same height from the bottom wall 5.

  The plate portion R2 rises by bending the plate material along the line A2, and the plate portion R21 connected to the plate portion R2 also rises as shown in FIG. Similarly, the plate portion R4 rises by bending the plate material along the A4 line, and the plate portion R41 connected to the plate portion R4 also rises (not shown).

  Further, the plate portion R1 rises due to the bending of the plate material along the line A1, and the plate portion R11 connected to the plate portion R1 also rises (not shown). Similarly, the plate portion R3 rises by bending the plate material along the A3 line, and the plate portion R31 connected to the plate portion R3 also rises.

Step (c);
Forming a first slit;
After the execution of step (b) or before execution, the plate material is set to “mountain fold” along the B1 line and the B3 line. Thereby, as shown in FIG. 3, the upper edge 1a of the first side wall portion 1 is formed along the line B1, and the plate portion R11 overlaps the first side wall portion 1 (plate portion R1). In addition, an upper edge 3a of the first side wall portion 3 is formed along the line B3, and the plate portion R31 overlaps the first side wall portion 3 (R3). In other words, the plate portions R11 and R31 are folded outward at the upper end edges 1a and 3a of the first side wall portions 1 and 3 so that the plate portions R11 and R31 overlap the first side wall portions 1 and 3, respectively. The plate portions R11 and R31 can be grasped as folded portions that are folded outward at the upper end edges 1a and 3a of the first side wall portions 1 and 3.

  By overlapping the plate portion R11 and the first side wall portion 1 (plate portion R1), the slit H11 formed symmetrically about the straight line B101 including the B1 line is folded at the straight line B101. As a result, one first slit 111 having one end 111a opened at the upper end edge 1a is formed. Similarly, first slits 112 to 114 in which one ends 112a to 114a are opened at the upper end edge 1a are formed from the slits H12 to H14. The first slits 111 to 114 at this time extend from the upper end edge 1 a of the first side wall portion 1 toward the lower end edge 1 b.

  Further, by overlapping the plate portion R31 and the first side wall portion 3 (plate portion R3), one end 311a to 314a is opened at the upper end edge 3a from each of the slits H31 to H34 formed in the plate portion 31. First slits 311 to 314 are formed. The first slits 311 to 314 at this time extend from the upper edge 3 a of the first side wall 3 toward the lower edge 3 b.

  The first slits 111 to 114 and the first slits 311 to 314 are bilaterally symmetric with respect to an imaginary plane that stands vertically to the bottom wall 5 at the position of the center line A105. This is because, as described in step (a), the slits H11 to H14 and the slits H31 to H34 are formed symmetrically about the center line 105A.

Dimensions for the first slit (part 1);
Since the first slits 111 and 112 are formed by overlapping the plate portion R1 and the plate portion R11, the first slit 111 extends from one end 11a of the upper edge 1a of the first side wall portion 1 as shown in FIG. , 112 are equal to the distances L11, L12 (FIG. 2) described in step (a). Further, the distances L113 and L114 from the other end 11b of the upper edge 1a to the first slits 113 and 114 are equal to the distances L13 and L14 (FIG. 2) as shown in FIG.

  In the state where the first slits 111 and 112 are formed, the folds formed along the E21 line and the E22 line formed in the plate portion R21 can be grasped as follows. That is, the crease is formed in the plate portion R21 according to the distances L111 and L112 from the one end 11a of the upper edge 1a to the first slits 111 and 112. Further, regarding the fold line formed along the E41 line and the E42 line, the fold line is formed on the plate portion R41 according to the distances L113 and L114 from the other end 11b of the upper edge 1a to the first slits 113 and 114. It can be grasped that it is formed.

  Similarly, since the first slits 311 to 314 are formed by overlapping the plate portion R3 and the plate portion R31, the distance from the one end 31a of the upper end edge 3a of the first side wall portion 3 to the first slits 311 and 312. Is equal to the distances L31 and L32 (FIG. 2), and the distance from the other end 31b of the upper edge 3a to the first slits 313 and 314 is equal to the distances L13 and L14 (FIG. 2).

Dimensions for the first slit (part 2);
The dimension regarding the 1st slits 111 and 112 formed by bending of a board | plate material is demonstrated using FIG. The length L1 of the first slit 111 is larger than the distance L2 between the first slits 111 and 112. More specifically, the length L1 of the first slit 111 is substantially the same as the sum of the distance L2 between the first slits 111 and 112 and the length L3 of the first slit 112.

  Since the first slits 311 and 312 are formed symmetrically with the first slits 111 and 112 as described in step (a), the dimensions related to the first slits 311 and 312 are the dimensions related to the first slits 111 and 112. It is the same as L1-L3.

  Further, the dimensions related to the first slits 113 and 114 are in the same relationship as the dimensions related to the first slits 111 and 112. Since the first slits 313 and 314 are formed symmetrically with the first slits 113 and 114 as described in the step (a), the dimensions relating to the first slits 313 and 314 are the first slits 113 and 114. The dimensions are the same.

Forming grooves for product removal;
By overlapping the plate portion R11 and the first side wall portion 1 (plate portion R1) with the plate material “mountain fold” at the B1 line, the hole J1 formed symmetrically about the straight line B101 including the B1 line is an axis. Folded along a straight line B101. Thereby, one groove 115 having one end 115a opened at the upper end edge 1a is formed.

  Similarly, a groove 315 in which one end 315a is opened at the upper end edge 3a from the hole J3 by overlapping the plate portion R31 and the first side wall portion 3 (plate portion R3) with the plate material being “mountain folded” at the B3 line. Is formed.

Formation of the slit 316 in the first side wall 3;
A slit I31 formed symmetrically about the straight line B301 including the line B3 by overlapping the plate part R31 and the first side wall part 3 (plate part R3) with the plate material “mountain fold” at the line B3. I32 is connected, and one slit 316 is formed in the first side wall portion 3. Hereinafter, the slit 316 is referred to as “third slit 316”, and similarly, the slit I11 is also referred to as “third slit I11”.

  The third slit 316 formed in the first side wall 3 is located at the same height as the third slit I11 (not shown) formed in the first side wall 1. As described in step (a), the slit I31 used for forming the third slit 316 and the third slit I11 are formed symmetrically about the center line A105 of the plate portion R5. Because.

Step (d);
Formation of the insertion portion 12 into the plate portion R11 and its insertion;
In parallel with the execution of step (c), this step (d) is selectively executed. When this step (d) is executed, as shown in FIG. 4, the plate portion R11 is set to “mountain fold” along the line G11. Thereby, plate part R12 which is a part of board part R11 is cut and raised to the back surface of plate part R11, and insertion part 12 is formed. Hereinafter, the insertion portion 12 is referred to as a “second insertion portion 12”.

  The second insertion part 12 is inserted into the third slit I11. At this time, in step (c), the plate portion R11 is overlapped with the first side wall portion 1 (plate portion R1) while the second insertion portion 12 is inserted into the third slit I11. And the front-end | tip part of the 2nd insertion part 12 is penetrated to the 3rd slit 316 formed at step (c). In view of the fact that the second insertion portion 12 is inserted into both the third slit I11 and the third slit 316, the third slit I11 and the third slit 316 are for inserting the second insertion portion 12 through. It can be grasped as a pair of third slits.

  By executing this step (d), the bottom surface of the inner box can be formed at the height of the third slit I11 and the third slit 316, and thus the depth of the inner box can be changed. . Therefore, even if the shape and size are different for each product, a cushioning material suitable for the shape and size of the product can be obtained from the same inner box. For this reason, an inner box can be made common in the product from which a shape and a dimension differ.

  Moreover, since the second insertion portion 12 is formed by cutting and raising the plate portion R12 which is a part of the plate portion R11, there is no need to separately prepare a member for forming the bottom surface of the inner box. Manufacturing of the inner box is simplified.

Dimensions of the second insertion part 12;
The length L6 (FIG. 4) from the root to the tip of the second insertion part 12 formed by cutting and raising the plate part R12 is the distance L7 (from the upper edge 1a of the first side wall part 1 to the root. It is smaller than twice the length of FIG. In the developed view of the inner box shown in FIG. 2, the length twice the distance L7 corresponds to the distance from the G11 line to the third slit I11.

  According to the second insertion part 12 having the above dimensions, the insertion of the second insertion part 12 into the third slit I11 formed in the first side wall part 1 is made substantially perpendicular or oblique to the first side wall part 1. This can be done from an inclined direction. Therefore, the second insertion part 12 can be easily inserted into the third slit I11.

Step (e);
Forming a second slit;
After execution of step (c) or before execution, as shown in FIG. 3, the plate portion R21 is “valley-folded” along the F21 line and the F22 line. Thereby, the second slits 221 and 222 having the ends 221a and 222a opened are formed from the slits H21 and H22. As shown in FIG. 3, the second slits 221 and 222 at this time extend from the distal end edge 22a of the plate portion R21 toward the proximal end portion.

  Similarly, second slits 421 and 422 in which one ends 421a and 422a are opened are formed from the slits H41 and H42 by making the plate portion R41 into a valley fold at the F41 line and the F42 line (FIG. 2).

The positional relationship between the second slit and the crease;
The distances L4 and L5 (FIG. 3) from the folds formed along the E21 line and the E22 line to the second slit 222 are substantially the same as the lengths L1 and L3 of the first slits 111 and 112, respectively. Further, the distance from each of the creases formed along the E21 line and the E22 line to the second slit 221 is substantially the same as the length of the first slits 311 and 312 (not shown).

  Similarly, the distances from the folds formed along the E41 line and the E42 line to the second slit 422 are substantially the same as the lengths of the first slits 114 and 113 (not shown). Further, the distances from the folds formed along the E41 line and the E42 line to the second slit 421 are substantially the same as the lengths of the first slits 314 and 313 (not shown).

Step (f);
Formation of the insertion portion 22 into the plate portion R21 and its insertion;
After the execution of steps (b) to (e), the plate material is “valley folded” along the line D2. Thereby, as shown in FIG. 1, the upper end edge 2a of the second side wall portion 2 is formed along the line D2, and the plate portion R21 covers the first side wall portions 1 and 3 from the upper end edge 1a, 3a side. In addition, the said board part R21 can be grasped | ascertained as the bending part bent toward the 2nd side wall part 4 in the upper end edge 2a of the 2nd side wall part 2. FIG.

  By folding along the D2 line, the fold line formed along the E21 line is positioned on the first slits 111 and 311 and the fold line formed along the E22 line is positioned on the first slits 112 and 312. This is because the folds on the E21 line and E22 line are formed according to the distances L111 and L112 from the one end 11a of the upper edge 1a to the first slits 111 and 112, as described in step (c). is there.

  Next, as shown in FIG. 5 or FIG. 6, the plate portion R21 is “valley-folded” along the E21 line or the E22 line. Thereby, the front-end | tip part of board part R21 is bend | folded to the bottom wall part 5 side, and the insertion part 22 is formed. Hereinafter, the insertion portion 22 is referred to as a “first insertion portion 22”.

  Due to the formation of the first insertion part 22, the second slits 221 and 222 are cut into only the first insertion part 22 as shown in FIGS. As described in step (a), the slits H21 and H22 (step (e)) used to form the second slits 221 and 222 are positioned on the side opposite to the plate portion R2 with respect to the E22 line. Because it is.

  The first insertion portion 22 formed by being bent along the line E21 is inserted into the first slits 111 and 311 as shown in FIG. On the other hand, the first insertion portion 22 formed by bending along the E22 line is inserted into the first slits 112 and 312 as shown in FIG.

  That is, the first slit 111 and the first slit 311 make a pair as a slit for inserting the first insertion portion 22, and the first slit 112 and the first slit 312 are also used for inserting the first insertion portion 22. Pairs as slits. In other words, a pair of first slits for inserting the first insertion portion 22 is formed in the first side wall portions 1 and 3 at a plurality of locations. A pair of first slits formed at a plurality of locations for inserting the first insertion portion 22 forms one slit group corresponding to the first insertion portion 22.

  Further, the slits H21 and H22 used for forming the slits 221 and 222 are formed at positions slightly shifted outward from the straight lines A103 and A101 as described in the step (a). , 311 and the first slits 112 and 312, the first side wall 3 can be inserted into the second slit 221 formed in the first insertion part 22, The first side wall 1 can be inserted into the second slit 222. That is, the second slits 221 and 222 form a pair as slits for inserting the first side wall portions 3 and 1.

  By inserting the first insertion portion 22 into the first slit 111 or 112 and inserting the first side wall portion 1 into the second slit 222, the first slit 111 or the first slit 112 and the second slit 222 are engaged, The first insertion portion 22 and the first side wall portion 1 are assembled in a cross shape. Similarly, by inserting the first insertion part 22 into the first slit 311 or 312 and inserting the first side wall part 3 into the second slit 221, the first slit 311 or the first slit 312 and the second slit 221 are formed. The first insertion part 22 and the first side wall part 3 are assembled in a cross shape by meshing.

Effect of forming and inserting the first insertion portion 22;
By forming a pair of first slits corresponding to the first insertion portion 22 at a plurality of locations, the first insertion portion 22 can be selectively inserted into the pair of first slits. Therefore, the internal space of the inner box can be freely expanded and reduced.

  Specifically, when the first insertion portion 22 is inserted into the pair of first slits 111 and 311 and when the first insertion portion 22 is inserted into the pair of first slits 112 and 312, The partitioning position of the space can be changed. More specifically, by inserting the first insertion portion 22 into the pair of first slits 112 and 312, the internal space is reduced as compared with the case where the first insertion portion 22 is inserted into the pair of first slits 111 and 311. be able to.

  Further, by using the first and second slits, the first insertion portion 22 and each of the first side wall portions 1 and 3 are assembled in a cross shape, so that the first insertion portion 22 and the first side wall portions 1 and 3 are assembled. The predetermined positional relationship between the inner box and the inner box can be prevented.

  Moreover, as described in step (c), the length L1 of the first slit 111 is substantially the same as the sum of the distance L2 between the first slits 111 and 112 and the length L3 of the first slit 112. Further, as described in step (e), the distances L4 and L5 from the folds on the E21 and E22 lines to the second slit 222 are substantially the same as the lengths L1 and L3 of the first slits 111 and 112, respectively.

  Therefore, when the plate portion R21 is bent at line E21 and the first insertion portion 22 is inserted into the slits 111 and 311, the closed ends 221b and 222b of the second slits 221 and 222 are blocked by the first slits 111 and 311. The first insertion portion 22 and each of the first side wall portions 1 and 3 can be assembled in a cross shape in a state of being aligned with the ends 111b and 311b. Even when the plate portion R22 is bent at the E22 line and the first insertion portion 22 is inserted into the slits 112 and 312, the closed ends 221 b and 222 b of the second slits 221 and 222 are blocked by the first slits 112 and 312. The first insertion portion 22 and each of the first side wall portions 1 and 3 can be assembled in a cross shape in a state where they coincide with the ends 112b and 312b.

  As a result, the first insertion portion 22 inserted into the first slits 111 and 311 (or 112 and 312) is less likely to be removed from the first slit, thereby preventing the inner box from being deformed. The overall strength can be increased.

Formation and insertion of the first insertion portion 42;
Similarly to the formation of the first insertion portion 22, after the execution of steps (b) to (e), the plate material is set to “valley fold” along the D4 line. Thereby, as shown in FIG. 1, the upper end edge 4a of the second side wall portion 4 is formed along the line D4, and the plate portion R41 covers the first side wall portions 1 and 3 from the upper end edge 1a, 3a side. In addition, the said board part R41 can be grasped | ascertained as the bending part bent toward the 2nd side wall part 2 in the upper end edge 4a of the 2nd side wall part 4. FIG.

  By folding along the D4 line, the fold line formed along the E41 line is positioned on the first slits 114 and 314, and the fold line formed along the E42 line is positioned on the first slits 113 and 313. This is because the folds on the E41 line and the E42 line are formed according to the distances L113 and L114 from the other end 11b of the upper edge 1a to the first slits 113 and 114, as described in step (c). It is.

  Next, let board part R21 be "valley fold" in E41 line or E42 line. Thereby, the front-end | tip part of board part R41 is bend | folded to the bottom wall part 5 side, and the 1st insertion part 42 is formed. At this time, the second slits 421 and 422 are cut into only the first insertion portion 42. As described in step (a), the slits H41 and H42 (step (e)) used for forming the second slits 421 and 422 are positioned on the opposite side of the plate portion R4 with respect to the E42 line. Because it is.

  The first insertion portion 42 formed by bending along the E41 line is inserted into the first slits 114 and 314 (not shown). On the other hand, the first insertion portion 42 formed by bending along the E42 line is inserted into the first slits 113 and 313 as shown in FIG.

  That is, the first slit 113 and the first slit 313 form a pair as a slit for inserting the first insertion portion 42, and the first slit 114 and the first slit 314 are also used for inserting the first insertion portion 42. Pairs as slits. A pair of first slits formed at a plurality of locations for inserting the first insertion portion 42 constitutes one slit group corresponding to the first insertion portion 42.

  Further, the slits H41 and H42 used for forming the slits 421 and 422 are formed at positions slightly shifted outward from the straight lines A103 and A101 as described in the step (a). , 313 and the first slits 114 and 314, the first side wall 3 can be inserted into the second slit 421 formed in the first insertion part 42, The first side wall 1 can be inserted into the second slit 422. That is, the second slits 421 and 422 are paired as slits for inserting the first side wall portions 3 and 1.

  By inserting the first insertion portion 42 into the first slit 113 or 114 and inserting the first side wall portion 1 into the second slit 422, the first slit 113 or the first slit 114 and the second slit 422 are engaged, The first insertion portion 42 and the first side wall portion 1 are assembled in a cross shape. Similarly, by inserting the first insertion portion 42 into the first slit 313 or 314 and inserting the first side wall portion 3 into the second slit 421, the first slit 313 or the first slit 314 and the second slit 421 are formed. The first insertion part 42 and the first side wall part 3 are assembled in a cross shape by meshing.

Effect of forming and inserting the first insertion portion 42;
As described in “Effects of formation / insertion of first insertion portion 22”, by forming a pair of first slits corresponding to the first insertion portion 42 at a plurality of locations, the pair of first slits On the other hand, the first insertion portion 42 can be selectively inserted, so that the internal space of the inner box can be expanded and contracted.

  Also, by using the first and second slits, the first insertion portion 42 and each of the first side wall portions 1 and 3 are assembled in a cross shape, so that the first insertion portion 42 and the first side wall portions 1 and 3 are assembled. The predetermined positional relationship between the inner box and the inner box can be prevented.

  In addition, for the same reason as described in “Effects of formation and insertion of the first insertion portion 22”, the first insertion portion 42 is provided in any of the pair of first slits 113 and 313 and the pair of first slits 114 and 314. Even when it is inserted, the first insertion portion 42 is less likely to come out of the first slit, thereby increasing the strength of the entire inner box.

The effect of the combination;
Selective insertion of the first insertion portion 22 into the pair of first slits 111 and 311 and the pair of first slits 112 and 312, and the pair of first slits 113 and 313 and the pair of first slits 114 and 314 By combining the selective insertion of the first insertion portion 42, four combinations can be realized, and the size of the internal space can be adjusted in four stages.

  Further, by combining step (d), the depth of the inner box can also be adjusted, and the size of the inner space can be adjusted to 8 levels.

  Therefore, even if the shape and size are different for each product, a cushioning material suitable for the shape and size of the product can be obtained from the same inner box. For this reason, an inner box can be made common in the product from which a shape and a dimension differ.

Other effects;
Since the first insertion portions 22 and 42 are formed by bending the tip portions of the plate portions R21 and R42, it is not necessary to separately prepare a member for partitioning the inner space of the inner box, and thus the inner box The production of is simplified.

  Further, since the plate portion R21 is creased along the E21 line and the E22 line, an operator who produces the inner box can easily recognize the folding position. The same applies to the plate portion R41. In addition, since the operator only has to select the fold according to the position of the pair of first slits to insert the first insertion portions 22 and 42, the working efficiency is improved as compared with the case where there is no fold. Furthermore, the shape variation of the produced inner box is reduced.

Step (g);
In parallel with the execution of step (f), each of the plate portion R2 and the plate portion R21 is “valley folded” at the F23 line and the F25 line shown in FIG. 3, and the plate portion is shown at the F24 line shown in FIG. Let R22 be “mountain fold”. Thereby, as shown in FIG. 5 or FIG. 6, the plate portion R22 is bent inward with respect to the plate portions R2 and R21. Thereby, the strength of the inner box can be increased while preventing the inner box from being deformed.

  Similarly, each of the plate portion R4 and the plate portion R41 is “valley folded” along the F43 line and the F45 line (FIG. 2), and the plate portion R42 (FIG. 2) is “mountain folded” along the F44 line. Thereby, as shown in FIG. 1, plate part R42 will be in the state bent to the inner side with respect to plate part R4, R41. Thereby, the strength of the inner box can be improved while preventing the inner box from being deformed.

Modification 1;
As described in step (f), in the inner box described above, the pair of first slits for inserting the first insertion portion 22 is formed in two places, but may be formed in a plurality of more places. . Similarly, the pair of first slits for inserting the first insertion portion 42 can also be formed at a plurality of locations. This makes it possible to adjust the size of the internal space in more stages.

  When a pair of first slits are formed at a plurality of locations, the contents of “dimension relating to the first slit (No. 2)” described in step (c) are the same as those of the first slits belonging to the same first side wall portion. This is applied to two adjacent first slits.

Modification 2;
As described in step (d), in the inner box described above, only one pair of third slits I11 and 316 for inserting the second insertion portion 12 is formed, but a plurality of pairs are formed side by side in the depth direction. May be. Thereby, it becomes possible to adjust the depth of the inner box in more stages.

Modification 3;
As described in step (f), in the inner box described above, the first insertion portions 22 and 42 are formed, and the slit group corresponding to each of the first insertion portions 22 and 42 is formed, but only one of them is formed. For example, you may form only the 1st insertion part 22 and the slit group corresponding to this.

  Further, as described in step (d), in the inner box described above, the second insertion portion 12 is formed together with the first insertion portions 22 and 42, but only the second insertion portion 12 may be formed. .

  However, it is preferable to form both the first insertion portions 22 and 42 and the second insertion portion 12 in that the inner box can be shared in more products having different shapes and dimensions.

Modification 4;
In the inner box described above, as described in step (c), the length L1 of the first slit 111 is substantially the same as the sum of the distance L2 between the first slits 111 and 112 and the length L3 of the first slit 112. However, if the length L1 is larger than the length L2, the following effects can be obtained.

  That is, when the first insertion portion 22 is inserted into the slit 111, the slit 222 can be formed so that the closed end 222b comes to a position lower than the distance L2 from the open end 111a of the slit 111. According to the slit 222, even when the first insertion portion 22 is inserted into the slit 112, the closed end 222b of the slit 222 is located at a position lower than the open end 112a of the slit 112 by a predetermined distance. Therefore, even when the first insertion portion 22 is inserted into any of the slits 111 and 112, the first insertion portion 22 and each of the first side wall portions 1 and 3 can be assembled in a cross shape. The inner box can be prevented from being deformed.

  In addition, each part structure of this invention is not restricted to the said embodiment, A various deformation | transformation is possible within the technical scope as described in a claim.

It is the perspective view which showed the inner case which concerns on embodiment of this invention. It is an expanded view of the inner box which concerns on embodiment of this invention. It is the perspective view which showed the process of assembling an inner box. It is the perspective view which showed the process of assembling an inner box. It is the perspective view which showed the process of assembling an inner box. It is the perspective view which showed the process of assembling an inner box.

Explanation of symbols

1,3 1st side wall part 2,4 2nd side wall part 1a-4a Upper end edge 11a Upper end edge 1b, 3b Lower end edge 1111-114, 311-314 1st slit L1, L3 1st slit length L2 Adjacent Distance between the first slits to be performed L111, L112 Distance from the end to the first slit R11 Plate part (folding part)
12 2nd insertion part I11,316 3rd slit L6 Length of 2nd insertion part L7 Distance from the root of the 2nd insertion part to an upper end edge R21, R41 Plate part (folding part)
22, 42 First insertion portion 22a Tip edge 221, 222 Second slit L4, L5 Distance between crease and second slit

Claims (9)

It is an inner box installed inside an outer box for packing, and includes four side wall portions (1 to 4) surrounding a rectangular parallelepiped space, and the four side wall portions are two first first surfaces facing each other. It is composed of side wall portions (1, 3) and two second side wall portions (2, 4) facing each other.
It further comprises a bent portion (R21) bent toward the other second side wall portion (4) at the upper end edge (2a) of at least one of the second side wall portions (2), A first insertion portion (22) is formed by bending the tip portion toward the bottom side of the space,
In the two first side wall portions, a pair of first slits (111, 311, 112, 112) for inserting the first insertion portion from the upper edge (1a; 3a) toward the lower edge (1b; 3b). 312) are formed at a plurality of locations,
The first insertion portion (22) is formed with a pair of second slits (221, 222) for inserting the two first side wall portions from the distal end edge (22a) toward the proximal end portion. ,
Inner box. The inner box according to claim 1,
The second side wall in which the bent portion (R21) is bent at the upper edge of two adjacent first slits (111, 112; 311 and 312) among the first slits belonging to the same first side wall portion. The length (L1) of the first slit (111, 311) closer to the part (2) is larger than the distance (L2) between the two adjacent first slits,
An inner box characterized by that. The inner box according to claim 2,
The length (L1) of the first slit (111) closer to the second side wall (2) is equal to the distance (L2) between the two adjacent first slits (111, 112). 2 is substantially the same as the sum of the length (L3) of the first slit (112) far from the side wall,
An inner box characterized by that. In the inner box according to claim 2 or claim 3,
The bent portion (R21) has a fold according to the distance (L111, L112) from the end (11a) of the upper edge (1a) of the first side wall portion (1) to the first slit (111, 112). Is formed,
An inner box characterized by that. The inner box according to claim 4,
The distance (L4; L5) between the crease formed in the bent portion (R21) and the second slit (221) is substantially the same as the length (L1; L3) of any one of the first slits. ,
An inner box characterized by that. In the inner box according to any one of claims 1 to 5,
The bent portions (R21, R41) are bent at both upper end edges (2a, 4a) of the second side wall portions (2, 4), and the first insertion portions (22, 42) are the bent portions. Are formed by bending each of the tip portions toward the bottom side of the space,
Two first slit groups formed of the pair of first slits formed at a plurality of locations are formed on the two first side wall portions (1, 3), and the first insertion into the two groups. The parts correspond one by one,
An inner box characterized by that. In the inner box according to any one of claims 1 to 6,
The upper end edge (1a) of one of the first side wall portions (1) is further provided with a folded portion (R11) folded outward, and a part of the folded portion is transferred to the other first side wall portion (3). The second insertion part (12) is formed by cutting and raising,
A pair of third slits (I11, 316) for penetrating the second insertion part are formed in the two first side wall parts,
An inner box characterized by that. The inner box according to claim 7,
The length (L6) from the base to the tip of the second insertion part (12) formed by cutting and raising a part of the folded part is the upper edge of the first side wall part where the folded part is folded. Smaller than twice the distance (L7) from (1a) to the root,
An inner box characterized by that. An inner box installed inside an outer packaging box, comprising four side wall parts surrounding a rectangular parallelepiped space, wherein the four side wall parts (1 to 4) are two first opposing ones. It is composed of side wall portions (1, 3) and two second side wall portions (2, 4) facing each other.
The upper end edge (1a) of one of the first side wall portions (1) is further provided with a folded portion (11) folded back to the outside, and a part of the folded portion is connected to the other first side wall portion (3). The insertion part (12) is formed by cutting and raising,
A pair of third slits (I11, 316) for penetrating the second insertion part are formed in the two first side wall parts,
An inner box characterized by that.

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