JP2012091852A - Packaging case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging case that can prevent displacement of a lower buffer with a simple configuration.SOLUTION: A corrugated fiberboard case 100 includes: a front face plate; a square cylindrical case body 1 composed of a right side face plate, a back face plate and a left side face plate that sequentially continue the front face plate via a crease line; and top plates 6a, 6b and bottom plates 8a, 8b that continue upper and lower ends of the front face plate and the back face plate via a crease line, respectively. On an inner side of bottom face of a case body 1, buffer retainer parts 21 are formed by bending flaps 9a, 9b in the bottom face.

Description

  The present invention relates to a packaging case for packaging a product such as an electronic device.

  Conventionally, as a packaging method for electronic devices or the like, as shown in FIG. 15, a lower cushioning material 101 that absorbs external shock or vibration during transportation is arranged in a cardboard case 100, and a product (packaged product) is placed thereon. In general, the lower cushioning material 101 receives a corner portion (product strength securing portion) 102a of the product 102 reinforced by a frame or the like by placing an article 102 and an upper cushioning material (not shown). As the cushioning material, a folded cardboard or a polystyrene foam, or a pulp mold cushioning material that can be recycled using waste paper as a material is used.

  In such a conventional packing method, the position of the lower cushioning material 101 with respect to the product 102 is shifted due to distortion of the lower cushioning material 101 due to an impact such as dropping of a packaged item, deformation of the cardboard case 100, and the like, as shown in FIG. In addition, the lower cushioning material 101 wraps around the portion 102b where the product strength is weak, causing a problem such as deforming the portion. In order to prevent the above problems, a method of increasing the strength of the cushioning material to reduce the amount of distortion or inserting a cushioning material integrated into the entire bottom surface of the cardboard case to prevent displacement is conceivable. However, in the method of increasing the strength of the cushioning material, it is necessary to ensure the strength of the product because the shock absorption property of the cushioning material is reduced, and in the method of integrating the cushioning material, the cushioning material becomes larger and the cost is increased. Bad effects occur.

  Therefore, Patent Document 1 discloses a packaging method in which a pair of lower flaps of a box is bent and started up so as to cover the lower half of the apparatus main body and receive the weight of the main body at the tip. Patent Document 2 discloses a packaging case in which one of the inner flaps on the bottom surface is cut into a substantially U-shape from the end surface as a positioning portion of a plate-like lower shock absorber disposed on the bottom surface of the packaging case. .

JP-A-5-338666 JP 2001-10691 A

  However, in the method of Patent Document 1, although an accessory part is put in the space between the lower flap and the box to prevent the lower flap from falling down, there is a holding portion of the device that is bent and erected. It was unstable, and the rising part of the lower flap might be bent by an impact such as dropping, or the device might fall from the tip of the lower flap.

  Further, in the method of Patent Document 2, since the lower shock absorber is positioned only by the step corresponding to the thickness of the inner flap, the positioning performance is insufficient, and the lower shock absorber may be displaced due to an impact such as dropping. there were.

  An object of this invention is to provide the packaging case which can prevent the shift | offset | difference of a lower shock absorbing material with a simple structure in view of the said problem.

  In order to achieve the above-mentioned object, the present invention is formed in a cylindrical shape on four side surfaces, and a case main body for storing an object to be packed, and a fold line between opposing edges of the lower opening of the case main body. A pair of bottom plates that form a bottom surface of the case body, and a pair of flaps in the bottom surface that are adjacent to the bottom plate and connected to opposing edges of the lower opening of the case body via a fold line And a cushioning material holding portion that is formed by bending a part of the flap in the bottom surface into a cylindrical shape and restricts the movement of the cushioning material disposed on the bottom surface of the case body.

  According to the present invention, in the packaging case configured as described above, the cushioning material holding portion is formed by bending a part of the inner bottom flap along a corner portion of the case body into a triangular prism shape.

  Further, the present invention provides the packaging case having the above-described configuration, wherein the cushioning material holding part is formed below the article to be packed, and the height of the cushioning material holding part is that of the article to be packed supported by the cushioning material. It is characterized by being approximately equal to the height to the bottom.

  According to the present invention, in the packaging case configured as described above, the cushioning material holding portion is formed by bending a part of the flap in the bottom surface into a quadrangular prism shape with a flat top surface.

  According to the first configuration of the present invention, the cushioning material holding portion is provided by bending a part of the flap in the bottom surface, so that the cushioning material can be placed at a predetermined position (the strength of the object to be packaged) even if an impact due to dropping is applied. Secured position). Therefore, the cushioning material does not go around the weak part of the bottom surface of the packed object, and the deformation of the packed object due to dropping can be effectively suppressed.

  According to the second configuration of the present invention, in the packaging case of the first configuration, the buffer material holding portion is formed by forming the triangular prism-shaped buffer material holding portion along the corner portion of the case body. In addition to the positioning effect and the movement suppressing effect of the material, the corner portion of the case body can be reinforced using the buffer material holding portion.

  Further, according to the third configuration of the present invention, in the packaging case of the first configuration, the buffer material holding portion is formed below the packaged object, and the height of the buffer material holding portion is supported by the buffer material. Since the cushioning material holding part plays a role of assisting the cushioning material by contacting the bottom surface of the packaged object by making it substantially equal to the height to the bottom surface of the packaging object, the cushioning material and the cushioning material holding part are The combined buffer performance is improved.

  Moreover, according to the 4th structure of this invention, in the packaging case of the said 3rd structure, the stress concentrated on the bottom face of the to-be-packaged object is formed by forming the cushioning material holding part of a square pillar shape with a flat upper surface. Since it does not add, the deformation | transformation of the bottom face of a to-be-packaged object can be suppressed.

The expanded view of the cardboard case which concerns on 1st Embodiment of this invention Partial enlarged view of the bottom surface flaps 9a and 9b in FIG. The perspective view which shows the state which assembled the cardboard case of FIG. The top view which looked at the cardboard case of 1st Embodiment from the upper direction of FIG. Partial sectional view of the lower part of the cardboard case of the first embodiment The perspective view which shows the unpacking procedure using the cardboard case of 1st Embodiment The top view which looked at the state which mounted the lower shock absorbing material 101 in the cardboard case 100 of 1st Embodiment from the arrow C direction of FIG. The side view which looked at the state which mounted the lower shock absorbing material 101 and the product 102 in the cardboard case 100 of 1st Embodiment from the arrow B direction of FIG. The side view which looked at the state which mounted the lower shock absorbing material 101 and the product 102 in the cardboard case 100 of 1st Embodiment from the arrow A direction of FIG. 9 is a side view showing a state after the free fall test is performed on the corrugated cardboard case 100 in the packaged state shown in FIG. 9 with the ridge portion (lower right corner portion in FIG. 9) facing down. The elements on larger scale of flaps 9a and 9b in the bottom before assembling the cardboard case concerning a 2nd embodiment of the present invention Partial sectional view of the lower part of the cardboard case of the second embodiment The top view which looked at the state which mounted the lower shock absorbing material 101 in the cardboard case 100 of 2nd Embodiment from the arrow C direction of FIG. The side view which looked at the state which mounted the lower shock absorbing material 101 and the product 102 in the cardboard case 100 of 2nd Embodiment from the arrow B direction of FIG. Side view showing a state in which a lower cushioning material 101 and a product 102 are placed in a conventional cardboard case 100 The side view which shows the state after performing the free drop test for the conventional corrugated cardboard case 100 of the packing state shown in FIG. 15 with the ridge (lower right corner in FIG. 15) down

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a development view of the cardboard case according to the first embodiment of the present invention. The cardboard case 100 is formed by bending a cardboard sheet punched into a predetermined shape. Specifically, the front plate 2, the right side plate 3, the rear side plate 4, the left side plate 5, and the front plate 2 and the rear plate 4 that are successively connected to the front plate 2 via fold lines are connected to the top and bottom of the front plate 2 and the rear plate 4 via fold lines. It has top plates 6a and 6b and bottom plates 8a and 8b. In addition, in FIG. 1, the mountain fold line is shown with the dashed-dotted line.

  An adhesive piece 11 bonded to the back surface of the left side plate 5 is connected to one end of the front plate 2 via a fold line. Further, the top surface flaps 7a and 7b are connected to the upper ends of the right side plate 3 and the left side plate 5, and the bottom surface flaps 9a and 9b are connected to the lower ends of the right side plate 3 and the left side plate 5. . Further, a gripping hole 10 is formed at one location slightly above the center in the height direction of the right side plate 3 and the left side plate 5.

  2 is a partially enlarged view of the bottom surface flaps 9a and 9b (inside the circle S in FIG. 1) in FIG. Two cuts 15 perpendicular to the edge are formed in the bottom surface flaps 9 a and 9 b, and a portion sandwiched between the cuts 15 is a bent piece 17. Three folding lines L <b> 1 to L <b> 3 are formed at predetermined intervals from the proximal end portion of the bent piece 17 toward the distal end portion. The interval between the fold lines L1 and L2 is wider than the interval between the fold lines L2 and L3 and the interval between the fold line L3 and the tip.

  In addition, a rectangular opening 19 is formed between the fold line L3 of the fold piece 17 and the tip portion, and one side of the fold piece 17 extends along the fold line L3. A trapezoidal cut-and-raised portion 20 having a maximum width slightly larger than the opening 19 is formed on the left side of FIG.

  3 is a perspective view showing a state in which the cardboard case 100 is assembled, FIG. 4 is a plan view of the cardboard case as viewed from above in FIG. 3, and FIG. 5 is a partial sectional view of the lower part of the cardboard case (of FIG. 4). AA arrow cross section). In FIG. 4, the top plates 6a and 6b and the top surface flaps 7a and 7b are not shown, and the cushioning material holding portion 21 is hatched.

  The assembly procedure of the cardboard case 100 will be described. First, the folding line connecting the front plate 2, the right side plate 3, the rear side plate 4, and the left side plate 5 is bent, and the adhesive piece 11 is adhered to the back side of the left side plate 5. A main body 1 (see FIG. 3) is formed. Next, the bottom plates 8a and 8b and the bottom flaps 9a and 9b are folded back to the inside of the case body 1, and the folded pieces 17 of the bottom flaps 9a and 9b are folded into a cylindrical shape along the folding lines L1 to L3. Then, the cut-and-raised 20 is inserted into the opening 19 and fixed to form the cushioning material holding portion 21 (see FIGS. 3 and 5). Finally, the bottom plates 8a and 8b are closed and fixed with adhesive tape or staples.

  As shown in FIGS. 3 to 5, the case body 1 has a rectangular tube shape, and a triangular prism-shaped cushioning material holding portion 21 is formed by bending the bent pieces 17 of the flaps 9 a and 9 b in the bottom surface inside the bottom surface. .

  Next, a method for packing an object to be packed using the cardboard case of the present invention will be described. FIG. 6 is a schematic view showing a packing procedure using a cardboard case. As shown in FIG. 6, first, two lower cushioning materials 101 are placed on the bottom surface of the cardboard case 100. As the material of the lower cushioning material 101 and the upper cushioning material 103 (described later), various conventionally known materials such as a hollow pulp mold, a laminated cardboard, or a soft resin such as expanded polystyrene can be used.

  FIG. 7 is a plan view of the state in which the lower cushioning material 101 is placed in the cardboard case 100 as viewed from the direction of arrow C in FIG. The size of the lower cushioning material 101 in the longitudinal direction is substantially the same as the inner dimension of the cardboard case 100 in the longitudinal direction (left-right direction in FIG. 7), and the direction perpendicular to the longitudinal direction of the lower cushioning material 101 (up-down direction in FIG. 7). Since the cushioning material holding part 21 is present, the two lower cushioning materials 101 are positioned along the inner wall surface of the cardboard case 100.

  Next, the product 102 is placed on the lower cushioning material 101. FIG. 8 is a side view of the state in which the lower cushioning material 101 and the product 102 are placed in the cardboard case 100 as viewed from the direction of arrow B in FIG. In FIG. 8, the front plate 2 is not shown and the inside is visible.

  Finally, the upper cushioning material 103 is mounted on the upper part of the product 102. Then, power cords, instruction manuals, accessories such as CD-ROM (not shown) are placed on the upper cushioning material 103, and the top surface flaps 7a, 7b and the top plates 6a, 6b are bent inward in order. The top plates 6a and 6b are closed and fixed with adhesive tape or staples to complete the packing operation.

  9 is a side view of the state in which the lower cushioning material 101 and the product 102 are placed in the cardboard case 100 as viewed from the direction of arrow A in FIG. 6, and FIG. 10 is the cardboard case in the packaged state shown in FIG. FIG. 10 is a side view of a state after 100 is subjected to a free drop test with the ridge portion (lower right corner portion in FIG. 9) down, as viewed from the direction of arrow A in FIG. 6. In FIG. 9 and FIG. 10, the right side plate 3 is not shown and the inside can be seen.

  As shown in FIG. 10, in the corrugated cardboard case 100 of the present invention, the lower cushioning material 101 is predetermined even when an impact due to dropping is applied by bending the portions of the bottom flaps 9a and 9b to provide the cushioning material holding portion 21. (Position where it abuts against the product strength securing portion 102a). Therefore, the lower cushioning material 101 does not go around the weak portion 102b (see FIG. 16) of the product 102, and deformation of the product 102 due to dropping can be effectively suppressed.

  Further, since the cushioning material holding portion 21 is formed in a triangular prism shape along the lower corner portion of the cardboard case 100, deformation of the lower corner portion of the cardboard case 100 can also be suppressed.

  FIG. 11 is a partially enlarged view of the flaps 9a and 9b in the bottom surface before assembling the cardboard case according to the second embodiment of the present invention, and FIG. 12 is a partial sectional view of the lower part of the cardboard case according to the second embodiment. 13 is a plan view of the state in which the lower cushioning material 101 is placed in the cardboard case 100 of the second embodiment as viewed from the direction of arrow C in FIG. 6, and FIG. 14 shows the lower cushioning material 101 and the product in the cardboard case 100. It is the side view which looked at the state which mounted 102 from the arrow B direction of FIG. The configuration other than the bottom flaps 9a and 9b and the procedure for assembling the corrugated cardboard case 100 are the same as those in the first embodiment, and the description thereof is omitted here.

  As shown in FIG. 11, in this embodiment, four folding lines L1 to L4 are formed at substantially equal intervals on the bent pieces 17 of the bottom surface flaps 9a and 9b. The bent piece 17 is bent into a cylindrical shape along the fold lines L1 to L4, and cut and raised 20 is inserted into the opening 19 and fixed, thereby forming a square columnar cushioning material holding portion 21 as shown in FIG. Is done.

  As shown in FIG. 13, when the lower cushioning material 101 is placed in the cardboard case 100, the longitudinal dimension of the lower cushioning material 101 is the same as the inner dimension in the longitudinal direction of the cardboard case 100 (left and right direction in FIG. 13). Since the shock-absorbing material holding part 21 is present in the direction (vertical direction in FIG. 13) perpendicular to the longitudinal direction of the lower shock-absorbing material 101, the two lower shock-absorbing materials 101 are the same as in the first embodiment. It is positioned along the inner wall surface of the cardboard case 100.

  Further, when the product 102 is placed on the lower cushioning material 101, as shown in FIG. 14, the cushioning material holding portion 21 is located below the product 102, and the height of the cushioning material holding portion 21 is lower than the lower cushioning material 21. It is substantially equal to the height of the product support surface 101a of the material 101. In other words, in the present embodiment, the buffer material holding portion 21 regulates the movement of the lower buffer material 101 and also plays a role of assisting the lower buffer material 101 by contacting the bottom surface of the product 102. The buffer performance as a whole with the material holding part 21 is improved.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of this invention. For example, the shape, size, and arrangement of the buffer material holding unit 21 can be arbitrarily set according to the size and shape of the lower buffer material 101.

  However, when the cushioning material holding portion 21 is formed at the lower corner portion of the cardboard case 100 for positioning the lower cushioning material 101 as in the first embodiment, the cushioning is performed in consideration of the reinforcing effect of the lower corner portion of the cardboard case 100. The material holding portion 21 is preferably formed in a triangular prism shape. Further, when the cushioning material holding part 21 has both the positioning function of the lower cushioning material 101 and the function of assisting the lower cushioning material 101 as in the second embodiment, the cushioning material holding part 21 has a flat upper surface. It is preferable that the stress is concentrated on the bottom surface of the product 102 by forming a rectangular column shape.

  INDUSTRIAL APPLICABILITY The present invention can be used for a packaging case that packs heavy items such as electronic devices, and regulates the movement of a cushioning material arranged on the bottom surface of the case body by bending a part of the flap in the bottom surface into a cylindrical shape. It is the packaging case which formed the buffer material holding | maintenance part.

  By using the present invention, even if an impact due to dropping or the like is applied, there is no risk that the cushioning material will move to a weak part of the bottom surface of the packed object, and deformation of the packed object due to falling can be effectively suppressed with a simple configuration. Packaging cases can be provided.

DESCRIPTION OF SYMBOLS 1 Case main body 2 Front surface plate 3 Right side surface plate 4 Rear surface plate 5 Left side surface plate 6a, 6b Top plate 7a, 7b Top surface flap 8a, 8b Bottom plate 9a, 9b Bottom surface flap 17 Bending piece 19 Opening part 20 Cut and raise 21 Buffer holding Part 100 Cardboard case (packaging case)
101 Lower cushioning material 102 Product (packaged item)
103 Upper cushioning material

Claims (4)

A case main body that is formed into a cylindrical shape on four side surfaces and stores an object to be packed;
A pair of bottom plates connected to opposing edges of the lower opening of the case body via a fold line to form the bottom surface of the case body;
A pair of bottom bottom flaps connected to the opposite edge of the lower opening of the case body adjacent to the bottom plate via a fold line;
A cushioning material holding portion that is formed by bending a part of the flap in the bottom surface into a cylindrical shape and restricts the movement of the cushioning material disposed on the bottom surface of the case body;
A packaging case comprising:   The packaging case according to claim 1, wherein the cushioning material holding portion is formed by bending a part of the flap in the bottom surface into a triangular prism shape along a corner portion of the case body.   The shock-absorbing material holding part is formed below the object to be packed, and the height of the shock-absorbing material holding part is substantially equal to the height to the bottom surface of the object to be packed supported by the shock-absorbing material. The packaging case according to claim 1.   The packaging case according to claim 3, wherein the cushioning material holding portion is formed by bending a part of the flap in the bottom surface into a quadrangular prism shape with a flat top surface.

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