JP2020045134A - Partition member - Google Patents

Abstract

To provide a partition member which reduces materials and has high workability.SOLUTION: A partition member 20 which is surrounded by a rectangular bottom surface, a pair of first side surfaces, and a pair of orthogonal second side surfaces, and is disposed in a box with depth, includes: a plate-shaped body part 2; a first support part 3 which is connected to one end part 21 of the body part via a first fold 31 so as to be foldable and can abut one second side surface; a second support part 4 which is connected to the other end part 22 via a second fold 41 so as to be foldable and can abut the second side surface; a first convex part 5 which is connected to the first support part; and a second convex part 6 which is connected to the second support part. The body part has a first concave part 23 and a second concave part 24. The first convex part and the second convex part are connected so as to respectively enter the first concave part and the second concave part. When folded, both the support parts and the convex parts integrally abut both side surfaces, and before being folded, gaps 234 and 244 are formed in at least a part between an inner edge of the concave part and an outer edge of the convex part.SELECTED DRAWING: Figure 3

Description

  The present invention provides a rectangular bottom wall portion, a pair of opposed first side portions extending to have a first length in a first direction, and a second length in a second direction orthogonal to the first direction. And a partition member disposed in a box provided with an internal space having a depth extending in a third direction, surrounded by a pair of opposing second side portions extending so as to have a width.

  In some cases, a separate partition member is attached to a box for storing articles. By providing such a partition member, the internal space of the box is partitioned into a plurality of regions, and articles are prevented from coming into contact with each other. For example, in Patent Literature 1, as shown in FIGS. 13 and 14, the internal space of a box is partitioned into two regions by using two partition members formed in a U-shape in plan view.

JP 2004-118724 A

  However, in the above-described example, since two partition members must be used, there is a problem that materials for the partition members increase and workability is poor. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a partition member that reduces materials and has high workability.

  The present invention provides a rectangular bottom wall portion, a pair of opposed first side portions extending to have a first length in a first direction, and a second length in a second direction orthogonal to the first direction. A partition member disposed in a box provided with an internal space having a depth extending in a third direction, surrounded by a pair of second side portions that extend to have the same, and in the first direction, A plate-shaped main body having substantially the same length as the first length, and one end of the main body in the first direction foldably connected via a first fold; A plate-shaped first support portion that can be brought into contact with the two side portions, and the other end portion in the first direction of the body portion that is foldably connected to the other end portion in the first direction via a second fold; A plate-shaped second support portion capable of contacting the portion, and a plate-shaped first convex portion connected to the first support portion. A second convex portion connected to the second support portion, wherein the main body portion is formed at the first concave portion formed at the one end portion and at the other end portion. A second concave portion, wherein the first convex portion is connected to the main body portion side of the first support portion so as to enter the first concave portion, and wherein the second convex portion is provided in the second support portion. The first support portion and the first convex portion are integrated with each other when the first support portion is bent with respect to the main body portion. The second support portion and the second convex portion integrally contact with each other when the second support portion is bent with respect to the main body portion while being in contact with one of the second side surface portions. The inner edge of the first concave portion and the outer edge of the first convex portion are in contact with the second side surface portion and before the first support portion is bent. A gap is formed in at least a part of the gap between the second support portion and the gap between the inner edge of the second concave portion and the outer edge of the second convex portion before the second support portion is bent. Is formed.

  In the partition member, a total length in the second direction of the first support portion and the first protrusion contacting the one second side surface portion is substantially the same as the second length, The total length in the second direction of the second support portion and the second convex portion abutting on the other second side surface portion may be substantially the same as the second length.

  In the partition member, a gap extending in parallel with the first fold is formed between a deep end of the first recess in the first direction and a tip of the first protrusion in the first direction. A gap extending parallel to the second fold is formed between a rear end of the second recess in the first direction and a front end of the second protrusion in the first direction. It can be.

  In the above-mentioned partition member, it is formed of corrugated cardboard, and the extending direction of the first fold and the second fold can be substantially the same as the extending direction of the center line of the corrugated cardboard.

  In the partition member, at least a tip portion of the first convex portion is reduced in length in the third direction as it goes to the deep end portion side of the first concave portion, and extends from an inner edge of the first concave portion. The distal end of the second convex portion is formed so as to be spaced apart, and the length in the third direction decreases at least as it goes toward the deep end of the second concave portion, and the inner edge of the second concave portion May be formed so as to be separated from the substrate.

  In the partition member, the first convex portion and the second convex portion are formed in a rectangular shape, and corner portions at both ends in the third direction of the first convex portion and the second convex portion are formed in an arc shape. Can be

  In the partition member, a portion of the first concave portion where the distal end of the first convex portion is disposed has a longer length in the third direction toward the far end side, and the first concave portion has a larger length. The portion in which the tip of the second convex portion is arranged in the second concave portion is formed so as to be separated from the outer edge of the convex portion. Is longer and is formed so as to be separated from the outer edge of the second convex portion.

  In the partition member, the first convex portion and the second convex portion are arranged near the center of the main body in the third direction, and the first convex portion and the second convex portion are long in the third direction. The length may be ５〜 to ／ of the length of the main body in the third direction.

  ADVANTAGE OF THE INVENTION According to the partition member which concerns on this invention, material can be reduced and workability | operativity can be improved.

It is a perspective view of a box concerning one embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the partition member according to the embodiment is housed in the box of FIG. 1. It is a top view which shows the partition member before bending. It is sectional drawing of a partition member. It is a perspective view which shows the partition member bent. It is a top view which shows the box which accommodated the partition member. It is sectional drawing explaining the bending of a partition member. It is a top view which shows the other example of a 1st convex part and a 1st recessed part. It is a top view which shows the other example of a 1st convex part and a 1st recessed part. It is a top view which shows the other example of a 1st convex part and a 1st recessed part. It is a top view which shows the other example of a 1st convex part and a 1st recessed part. It is a top view which shows the other example of a 1st convex part and a 1st recessed part. It is a perspective view which shows the partition member of the conventional example, and the box which accommodated this. FIG. 14 is a plan view of FIG. 13.

  Hereinafter, an embodiment of a partition member according to the present invention will be described with reference to the drawings. First, a box in which the partition member is arranged will be described, and then details of the partition member will be described. In the following, for convenience of description, the description will be made based on the directions in the drawings in the drawings. However, the present invention is not limited by the definition of this direction.

<1. Box Overview>
FIG. 1 is a perspective view of the box. As shown in FIG. 1, the box 10 is formed in a rectangular parallelepiped shape, and includes a rectangular bottom wall portion 11 and a peripheral wall portion 12 rising from the peripheral edge thereof. It has an internal space. The bottom wall portion 11 is formed in a rectangular shape having opposing first short sides 111 and second short sides 112 and opposing first long sides 113 and second long sides 114.

  On the other hand, the peripheral wall portion 12 rises from the first short side 111, the second short side 112, the first long side 113, and the second long side 114 of the bottom wall portion 11, respectively. Side surface portion) 121, second short side surface portion (the other first side surface portion) 122, first long side surface portion (the one second side surface portion) 123, and second long side surface portion (the other second side surface portion) 124 , Which are all formed in a rectangular shape. The first short side surface portion 121 and the second short side surface portion 122 face each other, and the first long side surface portion 123 and the second long side surface portion 124 face each other. Hereinafter, for convenience of description, the direction along the long side of the bottom wall portion 11 is the longitudinal direction (first direction), the direction along the short side is the short direction (second direction), and the longitudinal direction and the short direction. Is referred to as a depth direction (third direction). The depth direction may be referred to as a vertical direction. In addition, the length of the long side of the bottom wall 11 is referred to as a first length L1, the length of the short side is referred to as a second length L2, and the length of the peripheral wall 12 in the depth direction is referred to as a third length L3. And

  The upper end of the peripheral wall portion 12 forms an opening of the internal space, but a lid portion for closing the opening may be separately provided.

<2. Overview of partition members>
Next, the partition member 20 will be described with reference to the drawings. 2 is a perspective view showing a state where the partition member is arranged in the box, FIG. 3 is a plan view of the partition member before being arranged (before bending) in the box, and FIG. 4 is a sectional view of the partition member. As shown in FIG. 2, the partition member 20 is a member that is arranged in the internal space of the box 1 and that partitions the internal space into two regions 101 and 102 arranged in the lateral direction. Specifically, it is configured as follows.

  As shown in FIG. 3, the partition member 20 is formed in a plate shape, and includes a rectangular main body 2 and first and second support portions 3 and 4 connected to both sides thereof. ing. Further, a first convex portion 5 is connected to the first support portion 3, and a second convex portion 6 is connected to the second support portion 4.

  The partition member 20 is formed of corrugated cardboard. Specifically, it includes three liners 201 to 203 arranged in parallel, and two cores 204 and 205 having a corrugated cross section arranged in two gaps between the liners 201 to 203, respectively. . The direction of the partition member 20 is determined so that the direction in which the streaks of the two cores 204 and 205 extend coincides with the depth direction (the direction of the paper surface of FIG. 4).

<2-1. Main unit>
The main body 2 is arranged to extend in the longitudinal direction in the internal space of the box. The length in the longitudinal direction and the length in the depth direction of the main body 2 are substantially the same as the first length L1 and the third length L3, and are formed in a rectangular shape as a whole. In addition, rectangular first ends 21 are provided on both sides in the longitudinal direction of the main body 2, that is, on the first end 21 on the first short side 121 and the second end 22 on the second short side 122. A recess 23 and a second recess 24 are formed. These recesses 23 and 24 are formed substantially near the center in the depth direction. Further, the length in the depth direction of these concave portions 23 and 24 is preferably 1/5 to 2/5 of the third length, and more preferably approximately 1/3.

  Next, the details of the recesses 23 and 24 will be described. Since both recesses 23 and 24 have the same left-right symmetry, only the first recess 23 will be described below. In addition, the code | symbol which shows the 2nd recessed part 24 is described in the paragraph of "explanation of code | symbol." The first concave portion 23 is formed in a rectangular shape, and includes a first portion 231, a second portion 232, and a third portion 233 arranged from the first end 21 to the second end 22. However, the second portion 232 constitutes most of the first concave portion 23, and the longitudinal lengths of the first portion 231 and the third portion 233 are short.

  The first portion 231 is formed in a rectangular shape, and upper and lower edges of the first portion 231 extend parallel to each other in the longitudinal direction. The second portion 232 is formed in a trapezoidal shape that is continuous with the first portion 231. That is, the upper and lower edges of the second portion 232 that are continuous from the upper and lower edges of the first portion 231 are formed so as to approach each other from the first end 21 side to the second end 22. . The third portion 233 is formed in a rectangular shape continuous with the second portion 232. That is, the upper and lower edges of the third portion 233 that are continuous from the upper and lower edges of the second portion 232 extend parallel to each other in the longitudinal direction.

<2-2. Supporting part and convex part>
Next, the support portions 3 and 4 will be described. Since the first support portion 3 and the second support portion 4 have substantially the same configuration that is symmetrical in the left-right direction, the first support portion 3 will be described below. In addition, the code | symbol which shows the 2nd support part 4 is described in the paragraph of "explanation of a code | symbol."

  The first support 3 is formed in a rectangular shape connected to the first end 21 of the main body 2, and is connected to the first end 21 so as to be bendable. That is, the first end 21 is connected to the upper and lower portions of the portion where the first concave portion 23 is formed via the first fold 31 (the first fold 31 is provided at the first end 21). There). The first fold 31 is formed along the lines of the cores 204 and 205 of the above-mentioned corrugated cardboard, so that it is easy to fold.

  The length of the first support portion 3 in the depth direction is the same as that of the main body 2. The length in the longitudinal direction of the first support portion 3 is about half of the above-described second length L2. In the first support portion 3, a rectangular first convex portion 5 is connected to an end portion on the main body portion 2 side, and the first convex portion 5 enters the first concave portion 23 of the main body portion 2. Are arranged as follows. These first protrusions 5 are formed substantially near the center of the first support 3 in the depth direction. On the other hand, if the length in the depth direction at the base end portion (the connection portion with the first support portion 3) of the first convex portion 5 is too short, the strength as a partition member is reduced, and the lateral length during transportation or the like is reduced. Since it is broken by vibration, the third length L3 is preferably set to 1/5 to 2/5, more preferably about 1/3. The length in the depth direction of the distal end portion and the proximal end portion of the first convex portion 5 is longer when the proximal end portion is longer (the trapezoidal shape with the proximal end portion as the base) when the first support portion 3 is bent. It is preferable because the first support portion 3 and the first convex portion 5 can be integrally moved by preventing the end portion from being bent.

  The first convex portion 5 includes a first portion 51, a second portion 52, and a third portion 53 arranged from the first end portion 21 side to the second end portion 22 side, and these are integrally formed. ing. However, the second part 52 constitutes most of the first convex part 5, and the length of the first part 51 and the third part 53 in the first direction is short.

  The first portion 51 is formed in a rectangular shape and has the same size as the first portion 231 of the first recess 23, and upper and lower edges of the first portion 231 are in contact with the first recess 23. The second portion 52 is formed in a trapezoidal shape having the same size as the second portion 232 of the first recess 23. That is, the upper and lower edges of the second portion 52 are in contact with the first recess 23. The third portion 53 is formed in a trapezoidal shape, and is disposed in the third portion 233 of the first recess 23. However, the length in the longitudinal direction is shorter than the third portion 233 of the first concave portion 23. That is, the third portion 53, which is the tip of the first convex portion 5, is not in contact with the deep end of the first concave portion 23, and the gap 234 is formed. The upper and lower corners on the distal end side of the third portion 53 are formed in an arc shape so as not to contact the edge of the third portion 233 of the first recess 23. Although the shape of the gap 234 is not particularly limited, the smaller the number of contact points with the inner edge of the first concave portion 23, the more easily the first convex portion 5 is separated from the first concave portion 23. The size of the gap 234 is not particularly limited. However, if the size is too large, the length of the first recess 23 in the longitudinal direction must be increased. . Therefore, it is sufficient that there is a gap for facilitating detachment. The size of the gap 234 (length in the longitudinal direction) depends on the thickness of the partition member 20, but may be, for example, 0.5 to 2 times the thickness of the partition member 20, and is 1 to 1.5 times. Is preferred. Specifically, for example, when the thickness of the partition member 20 is about 6 mm, the length in the longitudinal direction of the gap 234 may be 3 to 12 mm, and preferably 6 to 9 mm.

  Further, the lengths of the first support portion 3 and the first convex portion 5 in the longitudinal direction are substantially the same. Furthermore, the total length of the first support portion 3 and the first convex portion 5 in the longitudinal direction is substantially the same as the length of the first short side surface portion 121 of the box 10 in the short direction, that is, the second length L2. Has become. Therefore, when the first support portion 3 is bent with respect to the main body portion 2, the first support portion 3 and the first convex portion 5 are integrated, and the entirety of the first short side surface portion 121 in the short direction is formed. To be in contact with each other.

  The partition member 20 formed as described above can be formed by punching a plate-like cardboard. At this time, the punching process is performed after positioning the cores 204 and 205 so that the streaks face the depth direction.

<3. How to Use Partition Member>
Next, a method of using the partition member 20 configured as described above will be described with reference to FIGS. FIG. 5 is a perspective view of the partition member in a folded state, and FIG. 6 is a plan view of a box in which the partition member is disposed.

  First, the first support portion 3 and the main body 2 are bent from the partition member 20 shown in FIG. 3 by the first fold 31 so as to form an angle of 90 degrees. At this time, the first convex portion 5 is detached from the first concave portion 23 and is arranged integrally with the first support portion 3 so as to form an angle of 90 degrees with the main body 2. Similarly, the second support 4 is bent with respect to the main body 2. That is, the second support portion 4 and the second convex portion 6 are integrated so as to form 90 degrees with respect to the main body portion 2. Thus, the bending of the partition member 20 is completed as shown in FIG.

  Subsequently, as shown in FIGS. 2 and 6, the folded partition member 20 is housed in the box 10. That is, the first support portion 3 and the first convex portion 5 are arranged so as to be in contact with the first short side surface portion 121, and the second support portion 4 and the second convex portion 6 are arranged so as to be in contact with the second short side surface portion 122. As a result, the main body 2 is arranged so as to divide the internal space of the box 10 into two regions 101 and 102 in the lateral direction.

  At this time, since the length in the longitudinal direction of the main body 2 is the same as the first length L1 of the internal space of the box, the first support 3 and the second support 4 are connected to the first short side surface of the box 10. The partition member 20 is in contact with the portion 121 and the second short side surface portion 122, respectively, and is restricted from moving in the longitudinal direction in the internal space.

  In addition, since the length of the first supporting portion 3 and the first convex portion 5 in the short direction is the same as the second length L2 of the internal space of the box 10, the first supporting portion 3 is formed by the first long side surface. The first convex portion 5 contacts the second long side surface portion 124. Similarly, the second support portion 4 contacts the first long side portion 123, and the second convex portion 6 contacts the second long side portion 124. Therefore, the movement of the partition member 20 in the lateral direction in the internal space is restricted. As described above, since the partition member 20 is disposed so as to be in contact with each of the four inner wall surfaces of the peripheral wall portion 12, it is firmly fixed to the internal space.

  Thereafter, the articles are stored in the first area 101 and the second area 102 partitioned by the partition member 20, respectively, and the packing is performed by closing the opening as necessary.

<4. Features>
According to the partition member of the above embodiment, the following effects can be obtained.
(1) Since the partition member 20 is formed of one corrugated cardboard, materials for the partition member can be reduced. Further, since the internal space of the box can be partitioned by bending one partition member 20, the workability can be improved as compared with the conventional example.

(2) Before the first support portion 3 is bent, the first convex portion 5 is housed in the first concave portion 23 so that the outer edge of the first convex portion 5 contacts the inner edge of the first concave portion 23. The entire outer periphery of the first convex portion 5 is not in contact with the entire inner peripheral edge of the first concave portion 23, but the distal end portion of the first convex portion 5, that is, the third portion 53 is not in contact with the first concave portion 23. . Therefore, when the first support portion 3 is bent to separate the first convex portion 5 from the first concave portion 23, the contact portion between them is small, so that the first convex portion 5 can be prevented from being caught in the first concave portion, It can be easily detached from the first recess 23.

  In particular, when the first support portion 3 is bent, as shown in FIG. 7, the first convex portion 5 first separates from the first concave portion 23 on the third portion 53 side, so that the third convex portion 5 becomes the first concave portion 23. If the first convex portion 5 is not in contact with the first concave portion 23, the first convex portion 5 is more easily separated from the first concave portion 23. That is, since the first convex portion 5 can be further suppressed from being caught by the first concave portion 23, when the first support portion 3 is bent, the first convex portion 5 is located near the first portion 51 which is the base end thereof. Problems such as bending from the first support portion 3 can be prevented, and the first support portion 3 and the first convex portion 5 can be integrally moved. As a result, unexpected breaks at portions other than the folds can be suppressed, and they can be moved together, so that workability can be improved.

(3) Since the length of the first convex portion 5 in the depth direction decreases toward the distal end, the third portion 53 of the first convex portion 5 can be hardly caught by the first concave portion 23. In particular, since the upper and lower corners of the first portion 53 are formed in an arc shape, the first concave portion 23 makes it difficult for the first portion 53 to be caught. The upper and lower edges of the third portion 233 of the first concave portion 23 are formed in parallel, and are formed to be separated from the first convex portion 5. Therefore, it is possible to further suppress the first protrusion 5 from being hooked.

(4) As described above, the first fold 31 is formed along the lines of the cores 204 and 205 of the cardboard, so that the first fold 31 is easily folded. On the other hand, the distal end of the third portion 53 of the first convex portion 5 and the deep end of the third portion 233 of the first concave portion 23 opposed thereto extend in the third direction, that is, the same direction as the streaks. I have. And since the center of the tip part of the 1st convex part 5 exposed by the punching process, and the center of the back end part of the 1st recessed part 23 both extend in the 3rd direction, it becomes easy to be caught. Therefore, in the present embodiment, the gap 234 is formed so that they do not come into contact with each other, and the catch is surely suppressed.

(5) Since the first portion of the first convex portion 5 is formed in a rectangular shape and has a constant length in the depth direction, the strength against bending can be improved.

  In the above (2) to (5), the operation and effect of the first convex portion 5 and the first concave portion 23 have been described, but these points are also the same for the second convex portion 6 and the second concave portion 24.

<5. Modification>
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to said Embodiment, A various change is possible unless it deviates from the meaning. The following modifications can be combined as appropriate.

<5-1>
In the above embodiment, when the partition member is accommodated in the box 10, the tips of the support portions 3 and 4 of the partition member 20 and the tips of the convex portions 5 and 6 are respectively connected to the first long side surface portion 123 of the box 10 and The partition member is in contact with the second long side surface portion 124, thereby preventing the partition member from moving in the second direction. However, the present invention is not limited to this, and the tip of each of the support portions 3 and 4 and the tip of each of the convex portions 5 and 6 are configured not to contact the first long side portion 123 and the second long side portion 124 of the box 10, respectively. You may. That is, the total length of the support portions 3 and 4 and the convex portions 5 and 6 may be shorter than the second length L2.

<5-2>
In the above embodiment, the first length L1 of the box 10 is longer than the second length L2, and the dimensions of the partition member 20 are determined so as to match this. However, the first length L1 is the second length. The first length L1 and the second length L2 may be shorter than the length L2. Further, the length in the depth direction of the partition member 20 does not necessarily have to be the same as the third length L3. Further, the length of the support portions 3 and 4 in the depth direction may be different from the length of the main body portion 2 in the depth direction.

<5-3>
The shapes of the projections 5 and 6 and the recesses 23 and 24 are not particularly limited, and various shapes may be used as long as the entire circumference of the projections 5 and 6 does not contact the entire circumference of the recesses 23 and 24. It is possible. In the following, the first convex portion 5 and the first concave portion 23 will be described as an example, but the same applies to the second convex portion 6 and the second concave portion 24.

  As shown in FIG. 8, the first convex portion 5 and the first concave portion 23 may have rectangular shapes whose upper and lower edges are parallel to each other. As shown in FIG. 9, the upper and lower corners of the third portion 53 of the first convex portion 5 may be formed not as an arc but as a straight line extending obliquely. As shown in FIG. 10, the third portion 233 of the first concave portion 23 may be formed so that the upper and lower edges become wider toward the far end. As shown in FIG. 11, the first convex portion 5 may be formed in a trapezoidal shape so that the entire edge does not contact the entire inner edge of the first concave portion 23. The first convex portion 5 can be configured so that the portion other than the third portion 53 does not contact the first concave portion 23. For example, as shown in FIG. 12, one of the upper and lower edges of the first convex portion 5 However, it is also possible not to make contact with the first concave portion 23.

<5-4>
In the above embodiment, the partition member 20 is formed by corrugated cardboard formed by three liners 201 to 203. However, the partition member 20 is formed by corrugated cardboard formed by two or four or more liners. Can also. Alternatively, the partition member 20 may be formed in a plate shape using paper other than corrugated cardboard, a resin material, or the like.

10 Box 11 Bottom wall 12 Peripheral wall 121 First short side (one first side)
122 second short side portion (the other first side portion)
123 first long side surface (one second side surface)
124 2nd long side part (the other 2nd side part)
Reference Signs List 20 partitioning member 2 main body 21 first end 22 second end 23 first recess 231 first portion 232 second portion 233 third portion 234 gap 24 second recess 241 first portion 242 second portion 243 third portion 244 Gap 3 First support part 31 First fold 4 Second support part 41 Second fold 5 First convex part 51 First part 52 Second part 53 Third part 6 Second convex part 61 First part 62 Second part 63 Third part

Claims (8)

A rectangular bottom wall portion, a pair of first side portions that extend to have a first length in a first direction, and have a second length in a second direction orthogonal to the first direction; A partition member disposed in a box having an internal space surrounded by a pair of second side portions extending and facing each other and having a depth extending in a third direction,
A plate-shaped main body having substantially the same length as the first length in the first direction;
A plate-like first support portion, which is connected to one end of the body portion in the first direction via a first fold so as to be able to bend and abut on one of the second side surface portions;
A plate-like second support portion that is connected to the other end of the main body in the first direction via a second fold so as to be able to bend and abuts the other second side surface;
A plate-shaped first projection connected to the first support,
A plate-shaped second projection connected to the second support,
With
The main body has a first recess formed at the one end and a second recess formed at the other end,
The first convex portion is connected to the main body portion side of the first support portion so as to enter the first concave portion,
The second convex portion is connected to the main body portion side of the second support portion so as to enter the second concave portion,
When the first support portion is bent with respect to the main body portion, the first support portion and the first convex portion integrally contact one of the second side surface portions,
When the second support portion is bent with respect to the main body portion, the second support portion and the second convex portion integrally contact the other second side surface portion,
Before the first support portion is bent, a gap is formed at least in part between an inner edge of the first concave portion and an outer edge of the first convex portion,
A partition member, wherein a gap is formed in at least a part between an inner edge of the second concave portion and an outer edge of the second convex portion before the second support portion is bent. The total length of the first support portion and the first convex portion in contact with the one second side surface portion in the second direction is substantially the same as the second length,
2. The partition according to claim 1, wherein a total length in the second direction of the second support portion abutting on the other second side surface portion and the second protrusion is substantially the same as the second length. 3. Element. A gap extending in parallel with the first fold is formed between a far end of the first recess in the first direction and a tip of the first protrusion in the first direction,
A gap extending parallel to the second fold is formed between a rear end of the second recess in the first direction and a front end of the second protrusion in the first direction. 3. The partition member according to 1 or 2. Formed by cardboard,
The partition member according to claim 3, wherein a direction in which the first fold and the second fold extend is substantially the same as a direction in which a central streak of the cardboard extends. At least the distal end of the first convex portion is formed so that the length in the third direction becomes shorter toward the far end side of the first concave portion, and is separated from the inner edge of the first concave portion. ,
At least the distal end of the second convex portion is formed so that the length in the third direction becomes shorter toward the far end side of the second concave portion, and is separated from the inner edge of the second concave portion. The partition member according to claim 3, wherein the partition member is provided. The first convex portion and the second convex portion are formed in a rectangular shape,
The partition member according to claim 5, wherein corner portions at both ends in the third direction of the first convex portion and the second convex portion are formed in an arc shape. In the first concave portion, the portion where the tip portion of the first convex portion is disposed has a length in the third direction that is longer as going to the far end side, and from the outer edge of the first convex portion. Formed to be spaced apart,
In the second concave portion, the portion where the tip portion of the second convex portion is disposed has a length in the third direction that increases toward the far end, and the portion from the outer edge of the second convex portion The partition member according to claim 3, wherein the partition member is formed so as to be separated. The first convex portion and the second convex portion are arranged near the center of the main body in the third direction,
The length of the first projection and the second projection in the third direction is １ ／ to ／ of the length of the main body in the third direction. 4. The partition member according to 1.