Packing case

Abstract

To prevent an object to be packed from falling in a packing case.SOLUTION: A packing case 1 includes: a pallet 10 including a first upper surface portion 11 for holding an object to be packed; a cover 20 including a second upper surface portion 21 facing the first upper surface portion 11 and covering at least a part of the first upper surface portion 11; and an unsealing prevention pin 30 passing through a first hole 11b provided in the first upper surface portion 11 and extending in a z direction and a second hole 21b provided in the second upper surface portion 21. The unsealing prevention pin 30 is held by one of the pallet 10 and the cover 20 so as to be movable in the z direction. In the closed state in which the first upper surface portion 11 is covered with the cover 20, the first hole 11b and the second hole 21b have a positional relation of overlapping when viewed from the z direction. When the first upper surface portion 11 is positioned higher than the second upper surface portion 21 in the closed state, the unsealing prevention pin 30 prevents the cover 20 from separating from the pallet 10 .SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a packing case. [Background technology]

[0002] Conventionally, as in Patent Document 1, a pallet for packaging an object to be packaged has been proposed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-202865 Summary of the Invention [Problem to be solved by the invention]

[0004] However, no consideration is given to the possibility that the packaged item may fall when opened while being held upside down.

[0005] Therefore, one object of the present invention is to prevent an object to be packed from falling out of a packing case. Other objects of the present invention will become apparent from the description of this specification. [Means for solving the problem]

[0006] The packing case according to the present invention comprises a pallet including a first top surface portion for holding an object to be packed, a cover including a second top surface portion facing the first top surface portion and covering at least a portion of the first top surface portion, and an anti-tamper pin passing through a first hole provided in the first top surface portion and extending in a first direction and a second hole provided in the second top surface portion. The anti-tamper pin is held on one of the pallet and the cover in a state in which it can move in the first direction. In a closed state in which the first top surface portion is covered by the cover, the first hole and the second hole are positioned so as to overlap when viewed from the first direction. When the first top surface portion is positioned higher than the second top surface portion in the closed state, the anti-tamper pin prevents the cover from being separated from the pallet. [Effects of the Invention]

[0007] As described above, according to the present invention, it is possible to prevent the objects to be packed from falling out of the packing case. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of the pallet, cover, and anti-tamper pin of the present embodiment, viewed from above. [Figure 2] FIG. 10 is a perspective view of the pallet, the cover, and the anti-tamper pin as viewed from below. [Figure 3] FIG. 2 is a perspective view of the packing case as seen from above. [Figure 4] FIG. 2 is a perspective view of the packing case as seen from below. [Figure 5] FIG. 2 is a top view of the packing case in the first closed state. [Figure 6] FIG. 6 is a cross-sectional view of the structure of FIG. 5 along the line AA. [Figure 7] FIG. 10 is a top view of the packing case in the second closed state. [Figure 8] FIG. 8 is a cross-sectional view of FIG. 7 taken along line BB. [Figure 9] FIG. 7 is an enlarged view of the circled area in FIG. 6. [Figure 10] FIG. 9 is an enlarged view of the circled area in FIG. 8. DETAILED DESCRIPTION OF THE INVENTION

[0009] The present embodiment will be described below with reference to the drawings. Note that the embodiment is not limited to the following embodiment. Furthermore, the content described in one embodiment is, in principle, also applicable to other embodiments. Furthermore, each embodiment and each modified example can be combined as appropriate.

[0010] To explain the directions, the direction in which the cover 20 or the pallet 10 moves when the cover 20 is attached to the pallet 10 (front-to-back direction) is defined as the x direction, the left-to-right direction perpendicular to the x direction is defined as the y direction, and the approximately vertical direction perpendicular to the x and y directions is defined as the z direction. In Figure 1 and other figures, the directions indicated by the arrows on the x and y axes are defined as the forward direction and the rightward direction, respectively. Additionally, the direction indicated by the arrow on the z axis is defined as the positive direction, and the direction at the root of the arrow in the z direction is defined as the negative direction.

[0011] (Definition of terms in the up and down direction) The state in which the cover 20 is attached to the pallet 10 is defined as a closed state. The closed state is a state in which the cover 20 covers the first upper surface portion 11 of the pallet 10, the first upper surface portion 11 of the pallet 10 faces the second upper surface portion 21 of the cover 20 in the z direction, the left recess 13b (or right recess 14b) of the pallet 10 engages with the left protrusion 23b of the cover 20, and the right recess 14b (or left recess 13b) of the pallet 10 engages with the right protrusion 24b of the cover 20.

[0012] Furthermore, a state in which the top surface of the packing case 1 in the closed state faces upward and the bottom surface of the packing case 1 faces downward is defined as a first closed state (see FIG. 6). The first closed state is a state in which the second top surface portion 21 of the cover 20 is positioned higher than the first top surface portion 11 of the pallet 10. In this case, the upward direction corresponds to the positive side of the z direction. Furthermore, a state in which the top surface of the packing case 1 in the closed state faces downward and the bottom surface of the packing case 1 faces upward is defined as a second closed state (see FIG. 8). The second closed state is a state in which the first top surface portion 11 of the pallet 10 is positioned higher than the second top surface portion 21 of the cover 20. In this case, the upward direction corresponds to the negative side of the z direction. The second closed state is a state in which the packing case 1 in the first closed state is turned upside down.

[0013] (Comparison with the terms in the claims) The "first direction" in the claims corresponds to the "z direction" in this embodiment, and the "second direction" in the claims corresponds to the "x direction" in this embodiment.

[0014] (Packing case 1) The packing case 1 of this embodiment includes a pallet 10, a cover 20, and an anti-tamper pin 30 (see FIGS. 1 and 2). The packing case 1 is used to hold an object to be packed, such as a workpiece (e.g., a probe). When holding the object to be packed, the object is placed on the pallet 10 and covered with the cover 20 from the positive side in the z direction.

[0015] (Palette 10) The pallet 10 has an outer shape of a substantially rectangular parallelepiped. Pallet 10 has a first top surface portion 11, a first left side surface portion 13, a first right side surface portion 14, a first front surface portion 15, a rear surface portion 17, and ribs 19. When cover 20 is attached to pallet 10 by sliding movement in the x direction, first top surface portion 11, first left side surface portion 13, first right side surface portion 14, and first front surface portion 15 are covered by cover 20 (see FIGS. 3 to 8).

[0016] (First top part 11) The first top surface portion 11 forms the top surface of the pallet 10. The first top surface portion 11 is provided with holding portions 11a (see FIG. 1). The holding portions 11a are formed as recesses for holding the objects to be packed or as holes penetrating the pallet 10 in the z direction. In this embodiment, an example is shown in which 20 columns (x direction) x 25 rows (y direction) = 500 holding portions 11a are formed on the first top surface portion 11. The shape and size of the holding portions 11a are determined depending on the shape and size of the objects to be packed. For example, if the objects to be packed are relatively small workpieces, such as substantially cylindrical objects with a diameter of 0.3 mm, the xy cross section of the recesses or holes of the holding portions 11a is smaller than the xy cross-sectional diameter of the first hole 11b (the inner diameter d21 of the portion other than the narrowed portion 11b1 of the first hole 11b).

[0017] A first hole 11b is provided in the center of the first upper surface portion 11 in the x direction and at an end portion in the y direction. The first hole 11b extends in the z direction and penetrates the first upper surface portion 11 and the rib 19 in the z direction (see FIGS. 9 and 10). An anti-tamper pin 30 can be inserted into the first hole 11b. A region (narrowed portion 11b1) where the hole diameter is reduced is provided between the positive side and negative side of the z direction of the first hole 11b in order to hold the anti-tamper pin 30.

[0018] (1st left side part 13) The first left side surface portion 13 forms the left side surface of the pallet 10. A left receiving portion 13a is provided at the lower end in the z direction of the first left side surface portion 13 (see FIG. 2). The left receiving portion 13a has a step that narrows the width in the y direction compared to other areas of the first left side surface portion 13 (so that the distance in the y direction from the first right side surface portion 14 is shortened).

[0019] (First right side part 14) The first right side surface portion 14 forms the right side surface of the pallet 10. A right receiving portion 14a is provided at the lower end in the z direction of the first right side surface portion 14. The right receiving portion 14a has a step that narrows its width in the y direction compared to other areas of the first right side surface portion 14 (so that the distance in the y direction from the first left side surface portion 13 is shortened).

[0020] When the cover 20 is attached to the pallet 10, the left receiving portion 13a faces the left lower end protrusion 23a of the cover 20, and the right receiving portion 14a faces the right lower end protrusion 24a of the cover 20. Furthermore, the left end of the pallet 10 in the y direction (first left side surface portion 13) is sandwiched in the z direction between the left end of the second upper surface portion 21 in the y direction and the left lower end protrusion 23a. Furthermore, the right end of the pallet 10 in the y direction (first right side surface portion 14) is sandwiched in the z direction between the right end of the second upper surface portion 21 in the y direction and the right lower end protrusion 24a.

[0021] A left recess 13b is formed on the front side in the x direction of the left receiving portion 13a (a region slightly shifted rearward in the x direction from the front end in the x direction) to engage with the left protrusion 23b of the left lower end protrusion 23a of the cover 20. A right recess 14b is formed on the front side in the x direction of the right receiving portion 14a (a region slightly shifted rearward in the x direction from the front end in the x direction) to engage with the right protrusion 24b of the right lower end protrusion 24a of the cover 20.

[0022] The left recess 13b may also be provided on the rear side of the left receiving portion 13a in the x direction (in a region slightly shifted forward in the x direction from the rear end in the x direction), and the right recess 14b may also be provided on the rear side of the right receiving portion 14a in the x direction (in a region slightly shifted forward in the x direction from the rear end in the x direction). In this case, the pallet 10 can be attached to the cover 20 in a state where it is rotated 180 degrees around an axis perpendicular to the z direction, that is, in a state where the pallet 10 is reversed front to back and left to right. Specifically, the first left side surface portion 13 of the pallet 10 faces the second right side surface portion 24 of the cover 20, and the first right side surface portion 14 of the pallet 10 faces the second left side surface portion 23 of the cover 20. The right recess 14b engages with the left protrusion 23b, and the left recess 13b engages with the right protrusion 24b.

[0023] (First front part 15, rear part 17) The first front portion 15 forms the front surface of the pallet 10. The rear portion 17 forms the rear surface of the pallet 10.

[0024] (Rib 19) A rib 19 is provided in the space surrounded by the first left side surface portion 13, the first right side surface portion 14, the first front surface portion 15, and the rear surface portion 17. The rib 19 has a surface perpendicular to the x direction or a surface perpendicular to the y direction. The rib 19 having a surface perpendicular to the x direction connects the first left side surface portion 13 and the first right side surface portion 14. A first hole 11b is formed inside the y-direction end of the rib 19 having a surface perpendicular to the x direction. The narrowed portion 11b1 is an area included in the rib 19 and is formed inside the first hole 11b. The rib 19 having a surface perpendicular to the y direction connects the first front surface portion 15 and the rear surface portion 17.

[0025] (Cover 20) The cover 20 covers at least a portion of the first upper surface portion 11 of the pallet 10. The cover 20 has a substantially rectangular parallelepiped outer shape. The cover 20 has a second upper surface portion 21, a second left side surface portion 23, a second right side surface portion 24, and a second front surface portion 25. The cover 20 is attached to the pallet 10 in a state where it can slide in the x direction.

[0026] (Second top part 21) The second upper surface portion 21 forms the upper surface of the cover 20. When the cover 20 is attached to the pallet 10, an object to be packed placed on the holding portion 11a of the first upper surface portion 11 of the pallet 10 is covered by the second upper surface portion 21. In other words, when the cover 20 is attached to the pallet 10, the upper surface of the first upper surface portion 11 of the pallet 10 and the lower surface of the second upper surface portion 21 of the cover 20 face each other in the z direction, and the object to be packed is surrounded by the first upper surface portion 11 and the second upper surface portion.

[0027] The dimensions of the pallet 10 and the cover are determined to satisfy the following conditions: When the cover 20 is attached to the pallet 10, the distance (gap) in the z direction between the first top surface portion 11 of the pallet 10 and the second top surface portion 21 of the cover is shorter than the dimension of the object in the short side direction so that the object does not fall out of the recess or hole in the holding portion 11a.

[0028] A direction indicator 21a is provided on the second top surface 21 (see FIGS. 1 and 3). The direction indicator 21a indicates the direction in which the cover 20 is to be moved when the cover 20 is to be removed from the pallet 10. In this embodiment, the direction indicator 21a has a character notation "OPEN" which means to open, and an arrow notation which prompts the cover 20 to be moved forward in the x direction.

[0029] A second hole 21b is provided in the center of the second top surface portion 21 in the x direction and at an end portion in the y direction. The second hole 21b extends in the z direction and penetrates the second top surface portion 21 in the z direction (see FIGS. 6 and 8). An anti-tamper pin 30 can be inserted into the second hole 21b. In a closed state (first closed state, second closed state) in which the first top surface portion 11 of the pallet 10 is covered by the cover 20, the first hole 11b and the second hole 21b are positioned so as to overlap when viewed from the z direction.

[0030] (Second left side part 23) The second left side surface portion 23 forms the left side surface of the cover 20 (see FIG. 2). A lower left end protrusion 23a is provided at the lower end in the z direction of the second left side surface portion 23. The lower left end protrusion 23a protrudes inward in the y direction compared to other areas of the second left side surface portion 23. Specifically, the lower left end protrusion 23a of the second left side surface portion 23 protrudes to the right in the y direction from the second left side surface portion 23.

[0031] (Second right side part 24) The second right side surface portion 24 forms the right side surface of the cover 20. A lower right end protrusion 24a is provided at the lower end in the z direction of the second right side surface portion 24. The lower right end protrusion 24a protrudes inward in the y direction compared to other areas of the second right side surface portion 24. Specifically, the lower right end protrusion 24a of the second right side surface portion 24 protrudes leftward in the y direction from the second right side surface portion 24.

[0032] A left convex portion 23b is formed on the front side of the left lower end protrusion 23a in the x direction, protruding further inward in the y direction than the left lower end protrusion 23a. The left convex portion 23b engages with the left recess 13b of the left receiving portion 13a of the first left side surface portion 13 of the pallet 10 (or the right recess 14b of the right receiving portion 14a of the first right side surface portion 14 of the pallet 10).

[0033] A right convex portion 24b is formed on the front side in the x direction of the right lower end protrusion 24a, protruding further inward in the y direction than the right lower end protrusion 24a. The right convex portion 24b engages with the right recess 14b of the right receiving portion 14a of the first right side surface 14 of the pallet 10 (or the left recess 14b of the left receiving portion 13a of the first left side surface 13 of the pallet 10).

[0034] The left recess 13b of the first left side surface 13 of the pallet 10, the right recess 14b of the first right side surface 14 of the pallet 10, the left protrusion 23b of the second left side surface 23 of the cover 20, and the right protrusion 24b of the second right side surface 24 of the cover 20 are used to maintain the pallet 10 and the cover 20 in an engaged state. When the left recess 13b and the left protrusion 23b (or the right protrusion 24b) are engaged and the right recess 14b and the right protrusion 24b (or the left protrusion 23b) are engaged, the engaged state of the pallet 10 and the cover 20 is easily maintained, making it difficult for the cover 20 to come off the pallet 10 (see FIG. 4). Another advantage is that it is possible to prevent the cover 20 from moving too far rearward in the x direction, which would cause interference between the second front surface 25 of the cover 20 and the first front surface 15 of the pallet 10.

[0035] (2nd front section 25) The second front portion 25 forms the front surface of the cover 20 .

[0036] (30 tamper-evident pins) The anti-tamper pin 30 is used to make the cover 20 removable from the pallet 10 when the second upper surface portion 21 of the cover 20 is positioned higher than the first upper surface portion 11 of the pallet 10 (first closed state). The anti-tamper pin 30 is also used to make the cover 20 unremovable from the pallet 10 when the first upper surface portion 11 of the pallet 10 is positioned higher than the second upper surface portion 21 of the cover 20 (second closed state), in other words, to prevent the cover 20 from being separated from the pallet 10.

[0037] The anti-tamper pin 30 has a base 31, legs 33, and a retaining portion 35 (see FIG. 1). The base 31 has an elongated cylindrical shape. The two legs 33 extend from the upper end of the base 31 in the z direction toward the positive side of the z direction. A retaining portion 35 is provided at the upper end of each of the two legs 33 in the z direction.

[0038] The length d11 in the longitudinal direction of the ellipse in the xy cross-section of the base portion 31 is larger than the inner diameter d22 of the constricted portion 11b1 and shorter than the inner diameter d21 of the portion of the first hole 11b other than the constricted portion 11b1 (d22 < d11 < d21, see Fig. 9). The width (outer dimension) d12 at both ends in the xy cross-section of the two leg portions 33 is shorter than the inner diameter d22 of the constricted portion 11b1 (d12 < d22). The width d12 at both ends of the two leg portions 33 refers to the distance between the portions of one leg portion 33 and the other leg portion 33 that are farthest from each other as viewed in the z direction.

[0039] In a state where no force is applied, the width (outer dimension) d13 at both ends in the xy cross-section of the two retaining portions 35 is larger than the inner diameter d22 of the constricted portion 11b1 and smaller than the inner diameter d21 of the portion of the first hole 11b other than the constricted portion 11b1 (d22 < d13 < d21). The width d13 at both ends of the two retaining portions 35 refers to the distance between the portions of one retaining portion 35 and the other retaining portion 35 that are farthest from each other as viewed in the z direction. However, in a state where a force is applied so that the two retaining portions 35 approach each other, the width (outer dimension) d13 at both ends in the xy cross-section of the two retaining portions 35 is smaller than the inner diameter d22 of the constricted portion 11b1 (d22 > d13).

[0040] The dimensions of the opening prevention pin 30 are determined so as to satisfy the following first condition and second condition. A state where the second upper surface portion 21 of the cover 20 is located above the first upper surface portion 11 of the pallet 10 (first closed state), that is, a state where the lower end portions of the two retaining portions 35 contact the upper end portion of the constricted portion 11b1, and the upper end portions of the two retaining portions 35 do not protrude in the positive z direction from the upper surface of the pallet 10 (the upper surface of the first upper surface portion 11) (first condition, see Fig. 9). A state where the first upper surface portion 11 of the pallet 10 is located above the second upper surface portion 21 of the cover 20 (second closed state), that is, a state where the upper end portion of the base portion 31 contacts the lower end portion of the constricted portion 11b1, and the upper end portions of the two retaining portions 35 protrude in the positive z direction from the upper surface of the pallet 10 (the upper surface of the first upper surface portion 11) and do not protrude in the positive z direction from the upper surface of the cover 20 (the upper surface of the second upper surface portion 21) (second condition, see Fig. 10).

[0041] When the anti-tamper pin 30 is inserted into the first hole 11b from the negative side in the z direction, the two retaining portions 35 collide with the narrowed portion 11b1 and are bent toward each other. Furthermore, when the anti-tamper pin 30 is pushed from the negative side in the z direction toward the positive side in the z direction, the two retaining portions 35 pass through the narrowed portion 11b1 and are positioned on the positive side of the narrowed portion 11b1 of the first hole 11b in the z direction. At this time, the state in which they were bent toward each other is released, and the two retaining portions 35 return to their original state before being bent toward each other. The lower ends of the two retaining portions 35 are restricted from moving in the negative z direction by the upper ends of the narrowed portion 11b1. Furthermore, the upper end of the base portion 31 is restricted from moving in the positive z direction by the lower end of the narrowed portion 11b1. Therefore, the anti-tamper pin 30 does not come out of the first hole 11b. Furthermore, the anti-tamper pin 30 is held by the pallet 10 in a state in which it can move in the z direction.

[0042] When the anti-tamper pin 30 is inserted into the first hole 11b from the negative side in the z direction and the retaining portion 35 of the anti-tamper pin 30 is latched by the narrowed portion 11b1, the base portion 31 of the anti-tamper pin 30 is located on the negative side of the z direction relative to the narrowed portion 11b1, the leg portion 33 of the anti-tamper pin 30 is able to move in the z direction through an area including the narrowed portion 11b1, and the retaining portion 35 of the anti-tamper pin 30 is located on the positive side of the z direction relative to the narrowed portion 11b1. That is, when viewed from the horizontal direction (e.g., the x direction), the narrowed portion 11b1 and the leg portion 33 are in an overlapping positional relationship. In other words, the narrowed portion 11b1 is located between the end of the leg portion 33 on the positive side in the z direction (the connection portion with the retaining portion 35) and the end of the leg portion 33 on the negative side in the z direction (the connection portion with the base portion 31). Furthermore, when viewed from the horizontal direction, the base portion 31 and the retaining portion 35 are positioned to sandwich the narrowed portion 11b1 in the z direction.

[0043] Furthermore, the anti-tamper pin 30 is inserted into the first hole 11b from the negative side in the z direction, and the retaining portion 35 of the anti-tamper pin 30 is latched by the narrowed portion 11b1. This allows the retaining portion 35 of the anti-tamper pin 30 to move in the z direction between the area of ​​the first hole 11b on the positive side in the z direction from the narrowed portion 11b1 and the second hole 21b.

[0044] In a first closed state in which the cover 20 is attached to the pallet 10 and the second upper surface portion 21 of the cover 20 is positioned higher than the first upper surface portion 11 of the pallet 10, the tamper-evident pin 30 is positioned on the negative side of the second hole 21b in the z direction (see FIG. 9). In a second closed state in which the cover 20 is attached to the pallet 10 and the first upper surface portion 11 of the pallet 10 is positioned higher than the second upper surface portion 21 of the cover 20, a part of the tamper-evident pin 30 (the retaining portion 35) is positioned inside the second hole 21b (see FIG. 10).

[0045] (Material of pallet 10 and cover 20) At least the first top surface 11 of the pallet 10 and at least the second top surface 21 of the cover 20 are preferably made of an antistatic material such as polycarbonate. 10 ~10 12 It is the material for Omega.

[0046] Furthermore, it is desirable that the pallet 10 be made of a transparent or translucent material. If the objects to be packed are white or black, the objects held on the pallet 10 can be easily seen if the member on which the pallet 10 is placed is black or white.

[0047] Here, "transparent" refers to a property of a material through which light passes, with extremely high transmittance, allowing the viewer to see through the material. Also, "translucent" refers to a property that allows light to pass through the material, similar to "transparent," but in which the transmitted light is diffused or has low transmittance, making it impossible to clearly see the shape of the other side through the material, unlike "transparent."

[0048] (Assembly Instructions) Next, a procedure for the packing case 1 to hold the object to be packed will be described. The tamper-evident pin 30 is attached to the first hole 11b of the pallet 10 in advance (tamper-evident pin attaching process). However, the tamper-evident pin 30 may be attached to the first hole 11b of the pallet 10 at a later stage. For example, the tamper-evident pin 30 may be attached to the first hole 11b of the pallet 10 at a stage after the cover 20 is attached to the pallet 10.

[0049] An object to be packed is placed in a recess or hole in the holding portion 11a of the first top surface portion 11 of the pallet 10 (object to be packed placing step). With the left end portion in the y direction of the second top surface portion 21 of the cover 20 and the left lower end protrusion 23a of the cover 20 sandwiching the first left side surface portion 13 of the pallet 10 in the z direction, and with the right end portion in the y direction of the second top surface portion 21 of the cover 20 and the right lower end protrusion 24a of the cover 20 sandwiching the first right side surface portion 14 of the pallet 10 in the z direction, one of the cover 20 and the pallet 10 is moved in the x direction to bring the cover 20 and the pallet 10 closer together (sliding step).

[0050] When the left recess 13b of the pallet 10 engages with the left protrusion 23b of the cover 20 and the right recess 14b of the pallet 10 engages with the right protrusion 24b of the cover 20, the attachment of the cover 20 to the pallet 10, i.e., the assembly of the packing case 1, is completed (closed state). At this time, at least a part of the object to be packed is held between the recess or hole in the holding portion 11a of the first top surface portion 11 of the pallet 10 and the second top surface portion 21 of the cover 20.

[0051] (Opening and closing procedure) Next, we will explain the correct procedure for opening the closed packing case 1. Place the packing case 1 on a horizontal surface so that the second upper surface portion 21 of the cover 20 is positioned above the first upper surface portion 11 of the pallet 10 (first closed state).

[0052] In the first closed state, a force is applied to either the pallet 10 or the cover 20 as shown below. That is, one of the cover 20 and the pallet 10 is moved in the x direction to disengage the left recess 13b of the pallet 10 and the left protrusion 23b of the cover 20 from each other, and to release the engagement between the right recess 14b of the pallet 10 and the right protrusion 24b of the cover 20, thereby separating the cover 20 from the pallet 10.

[0053] The anti-tamper pin 30 is positioned so as not to overlap with the cover 20 when viewed from the horizontal direction (for example, the x direction) (see FIGS. 6 and 9). Therefore, the anti-tamper pin 30 does not prevent the cover 20 from sliding in the x direction away from the pallet 10, allowing the cover 20 to be removed from the pallet 10.

[0054] Next, we will explain the incorrect procedure for opening the closed packing case 1. The packing case 1 is placed on a horizontal surface so that the first upper surface 11 of the pallet 10 is positioned above the second upper surface 21 of the cover 20 (second closed state).

[0055] In the second closed state, a force is applied to either the pallet 10 or the cover 20 as shown below. That is, one of the cover 20 and the pallet 10 is moved in the x direction to disengage the left recess 13b of the pallet 10 from the left protrusion 23b of the cover 20 and the right recess 14b of the pallet 10 from the right protrusion 24b of the cover 20, thereby attempting to separate the cover 20 from the pallet 10.

[0056] In the above description, the cover 20 is attached to the pallet 10 and removed from the pallet 10 by moving one of the cover 20 and the pallet 10 in the x direction. However, the cover 20 may be attached to the pallet 10 and removed from the pallet 10 by moving both the cover 20 and the pallet 10 in the x direction in opposite directions.

[0057] If the cover 20 could be removed from the pallet 10 in the second closed state, the objects to be packed held by the holding portions 11a of the pallet 10 would fall downward. However, in the second closed state, the tamper-evident pin 30 is positioned so as to overlap the pallet 10 and the cover 20 when viewed horizontally (e.g., in the x direction) (see FIGS. 8 and 10). Therefore, the tamper-evident pin 30 prevents the cover 20 from sliding in the x direction away from the pallet 10, making it impossible to remove the cover 20 from the pallet 10. Therefore, it is possible to prevent the packing case 1 from being accidentally opened and the objects to be packed from falling off the pallet 10 when the packing case 1 is turned upside down from the first closed state to the second closed state.

[0058] (Effect of providing the anti-tamper pin 30) This makes it possible to prevent the packing case 1 from being opened upside down, and to prevent the objects to be packed from falling out due to the opening.

[0059] (Effect of using antistatic materials) This can prevent the objects to be packed from scattering due to static electricity when the package is opened. Furthermore, when placing the objects to be packed on the pallet 10, this can prevent the objects from being difficult to place due to the influence of static electricity.

[0060] (Effect of Providing Narrowed Section 11b1) The narrowed portion 11b1 can be used to easily hold the anti-tamper pin 30 in a state where it can move in the z direction.

[0061] (Effect of the hole passing through the rib) The first upper surface portion 11 and the rib 19 ensure a dimension in the direction in which the first hole 11b extends (z direction), making it easier to ensure an area in which the narrowed portion 11b1 is formed.

[0062] (Effect of providing a pallet holding section) The recesses or holes in the holding portion 11a make it difficult for the packaged object to move between the pallet 10 and the cover 20 during transportation.

[0063] (Effect of making the recess or hole smaller than the first hole) One packing case 1 can hold a plurality of packing objects that are smaller than the inner diameter of the first hole 11b.

[0064] (The effect of making the pallet 10 out of transparent material) By adjusting the color of the member on which the pallet 10 is placed to match the color of the object to be packed, the object to be packed held on the pallet 10 can be easily seen.

[0065] (Example of application of 30 tamper-evident pins) In the present embodiment, an example has been described in which two anti-tamper pins 30 are provided, and two first holes 11b and two second holes 21b are also provided. However, the number of anti-tamper pins 30 is not limited to two. Furthermore, the number of first holes 11b and second holes 21b can be provided in accordance with the number of anti-tamper pins 30.

[0066] (Example of application where the base part 31 and the retaining part 35 are upside down) In the present embodiment, an example has been described in which the base portion 31 is located on the negative side in the z direction relative to the retaining portion 35. However, the base portion 31 may be located on the positive side in the z direction relative to the retaining portion 35. In this case, the anti-tamper pin 30 is inserted into the first hole 11b from the positive side in the z direction.

[0067] (Example of application where cover 20 holds tamper-evident pin 30) In the present embodiment, an example has been described in which the pallet 10 holds the anti-tamper pin 30 in the first hole 11b in a state in which it can move in the z direction, and the narrowed portion 11b1 is provided in the first hole 11b. In this case, when viewed from the horizontal direction (for example, the x direction), the anti-tamper pin 30 overlaps with the pallet 10 but does not overlap with the cover 20 in the first closed state, and overlaps with the pallet 10 and the cover 20 in the second closed state.

[0068] However, the cover 20 may hold the anti-tamper pin 30 in the second hole 21b in a state where it can move in the z direction, and the narrowed portion 11b1 may be provided in the second hole 21b. In this case, when viewed from the horizontal direction (for example, the x direction), the anti-tamper pin 30 overlaps with the cover 20 but does not overlap with the pallet 10 in the first closed state, and overlaps with the pallet 10 and the cover 20 in the second closed state.

[0069] (Application example of the first hole 11b and the second hole 21b) In the present embodiment, an example has been described in which the first hole 11b penetrates the first upper surface portion 11 and the rib 19 in the z direction, and the second hole 21b penetrates the second upper surface portion 21 in the z direction. However, the first hole 11b may be provided only on the side facing the second upper surface portion 21, and may not penetrate the negative side of the rib 19 in the z direction. Furthermore, the second hole 21b may be provided only on the side facing the first upper surface portion 11, and may not penetrate the positive side of the first upper surface portion 11 in the z direction.

[0070] (Example of application of the direction in which the first hole 11b and the second hole 21b extend) In this embodiment, the first hole 11b and the second hole 21b extend in the z direction, i.e., in a direction perpendicular to the xy plane. However, the direction in which the first hole 11b and the second hole 21b extend is not limited to a direction perpendicular to the xy plane, and they may extend in an oblique direction forming a predetermined angle with the xy plane.

[0071] (Application example of how the cover 20 is attached to the pallet 10) In this embodiment, an example has been described in which the cover 20 is attached to the pallet 10 by sliding in the x direction. However, the attachment of the cover 20 to the pallet 10 is not limited to sliding in the x direction. For example, a conceivable configuration is one in which the cover 20 is attached to or detached from the pallet 10 by moving in the z direction. In this case, the anti-tamper pin 30 has a generally V-shape with a wider side on which the cover 20 is located. In the first closed state, the anti-tamper pin 30 is located on the side on which the pallet 10 is located and does not prevent the cover 20 from being removed from the pallet 10. In the second closed state, a part of the anti-tamper pin 30 is located on the side on which the cover 20 is located, and the wider part of the generally V-shape is caught in the second hole 21b of the cover 20, preventing the cover 20 from being removed from the pallet 10.

[0072] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are intended to be included within the scope and spirit of the invention, as well as within the scope of the invention described in the claims and their equivalents.

[0073] According to the present specification, the following aspects are provided. (Aspect 1) The packing case includes a pallet including a first top surface portion that holds an object to be packed, a cover including a second top surface portion that faces the first top surface portion and covers at least a portion of the first top surface portion, and a tamper-evident pin that passes through a first hole that is provided in the first top surface portion and extends in a first direction and a second hole that is provided in the second top surface portion. The tamper-evident pin is held on one of the pallet and the cover in a state that allows it to move in the first direction. In a closed state in which the first top surface portion is covered by the cover, the first hole and the second hole are positioned so as to overlap when viewed from the first direction. When the first top surface portion is positioned higher than the second top surface portion in the closed state, the tamper-evident pin prevents the cover from being separated from the pallet.

[0074] According to the first aspect, it is possible to prevent the packing case from being opened upside down, and to prevent the objects to be packed from falling out when the packing case is opened.

[0075] (Aspect 2) Preferably, the first top surface portion and the second top surface portion are made of an antistatic material.

[0076] According to the second aspect, it is possible to prevent the objects to be packed from scattering due to static electricity when the package is opened. Furthermore, according to the second aspect, it is possible to prevent the objects to be packed from being difficult to place on a pallet due to the influence of static electricity.

[0077] (Aspect 3) More preferably, the tamper-evident pin has a base portion, a leg portion connected to the base portion, and a retaining portion connected to the leg portion. One of the pallet and the cover has a narrowed portion for holding the tamper-evident pin. The narrowed portion is located between the base portion and the retaining portion.

[0078] According to the third aspect, the narrowed portion can be used to easily hold the anti-tamper pin in a movable state.

[0079] (Aspect 4) More preferably, the tamper-evident pin is held by a pallet. The pallet includes a rib. The first hole is formed in the first top surface portion and the rib. The narrowed portion is formed inside the first hole.

[0080] According to the fourth aspect, the first upper surface portion and the rib ensure a dimension in the direction in which the first hole extends (first direction), making it easier to ensure an area in which the narrowed portion is formed.

[0081] (Aspect 5) More preferably, in the closed state, the object to be packed is surrounded by the first upper surface portion and the second upper surface portion.

[0082] According to the fifth aspect, it is possible to make it difficult for the packaged object to move between the pallet and the cover during transportation, etc.

[0083] (Aspect 6) More preferably, the palette is made of a transparent material or a light-transmitting material.

[0084] According to the sixth aspect, by adjusting the color of the member on which the pallet is placed to match the color of the object to be packaged, the object to be packaged held on the pallet can be easily seen. [Explanation of symbols]

[0085] 1 Packing case, 10 Packing pallet, 11 First upper surface portion, 11a Holding portion, 11b First hole, 11b1 Narrowed portion, 13 First left side surface portion, 13a Left receiving portion, 13b Left recessed portion, 14 First right side surface portion, 14a Right receiving portion, 14b Right recessed portion, 15 First front surface portion, 17 Rear surface portion, 19 Rib, 20 Cover, 21 Second upper surface portion, 21a Direction display portion, 21b Second hole, 23 Second left side surface portion, 23a Left lower end protrusion portion, 23b Left convex portion, 24 Second right side surface portion, 24a Right lower end protrusion portion, 24b Right convex portion, 25 Second front surface portion, 30 Tamper-proof pin, 31 Base portion, 33 Leg portion, 35 retaining portion, d11 longitudinal length of the oval of the xy cross section of the base portion, d12 width at both ends of the two legs (external dimension), d13 width at both ends of the two retaining portions (external dimension), d21 inner diameter of the portion other than the narrowed portion of the first hole, d22 inner diameter of the narrowed portion

Claims

1. a pallet including a first top surface portion that holds an object to be packaged; a cover including a second upper surface portion facing the first upper surface portion, the second upper surface portion sliding in a direction along the first upper surface portion to cover at least a portion of the first upper surface portion; an anti-tamper pin that, when the second upper surface portion covers the first upper surface portion, inhibits the sliding movement when the first upper surface portion is located above the second upper surface portion, and allows the sliding movement when the first upper surface portion is located below the second upper surface portion; The tamper-evident pin has a base portion, a leg portion connected to the base portion, and a retaining portion connected to the leg portion, one of the pallet and the cover has a narrowed portion for holding the tamper-evident pin; The narrowed portion is located between the base portion and the retaining portion, The anti-tamper pin passes through a first hole provided in the first upper surface portion, extending in a first direction perpendicular to the sliding direction, and a second hole provided in the second upper surface portion, the tamper-evident pin is held by the pallet; the pallet includes ribs; the first hole is formed in the first upper surface portion and the rib, The packing case, wherein the narrowed portion is formed inside the first hole.

2. The packing case according to claim 1 , wherein the first top surface and the second top surface are made of an antistatic material.

3. 3. The packing case according to claim 1, wherein in a closed state in which the first upper surface portion is covered by the cover, the object to be packed is surrounded by the first upper surface portion and the second upper surface portion.

4. 4. The packing case according to claim 1, wherein the pallet is made of a transparent material or a light-transmitting material.

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