JP2012006608A - Packaging case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging case in which a lower box and an upper box can be easily coupled with each other without using a fastener.SOLUTION: The lower box 1 includes a bottom surface and a lateral wall 4a continuously provided at a peripheral part of the bottom surface. In the approximately center part of the lateral wall 4a, a part surrounded by incisions is bent downward toward the inside of the lower box 1 to provide a first engaging piece 6a. The upper box 2 includes a top surface and a lateral surface 8a continuously provided at a peripheral part of the top surface. In the approximately center part of the lower end of the lateral surface 8a overlapped with the lateral wall 4a, a flap continuously provided via a folding line is bent upward toward the outside of the upper box 2 to provide a second engaging piece 10a. When the upper box 2 covers the lower box 1 from the upper side so that the lateral wall 4a and the lateral surface 8a are overlapped with each other, the first engaging piece 6a and the second engaging piece 10a are engaged with each other, and the lower box 1 and the upper box 2 are coupled with each other.

Description

  The present invention relates to a packaging case for packaging a product such as an electronic device, and more particularly to a so-called C-type packaging case composed of a lower box for placing a product and an upper box connected to the lower box. It is.

  2. Description of the Related Art Conventionally, a so-called C-type packaging case in which a product is placed on a pallet and covered with an upper box is fixed widely when packaging a large and heavy product such as an electronic device. An example of a conventional C-type packaging case is shown in FIGS. The packaging case 100 includes a lower box 101 and an upper box 102, and a pallet 103 is attached to the bottom surface of the lower box 101. A through hole 104 a is formed at the center of each side surface of the lower box 101. The usage of such a packaging case 100 is shown in FIG. First, an object to be packed (not shown) is placed on the lower box 101, and the cylindrical upper box 102 is placed thereon.

  Under the upper box 102, a through hole 104b is formed at a position overlapping the through hole 104a of the lower box 101. By inserting the fastener 105 in a state where the through holes 104a and 104b are stacked, the lower box 101 is inserted. And the upper box 102 are connected together. By using the lower box 101 to which such a pallet 103 is attached, it is not necessary to place the packaging case 100 on the pallet 103 after the product is packed, so that particularly large products and the like can be easily packed and transported.

  When packing a product using the C-type packaging case as described above, since the lower box 101 and the upper box 102 are coupled using the plastic fastener 105, the fastener is attached to the four side surfaces of the packaging case 100. There is a problem that it is necessary to attach and detach 105, and the man-hours for packing and unpacking work increase. In addition, the plastic fastener 105 has a large environmental load, and it is necessary to separate and dispose of the fastener 105 when the packaging case 100 after unpacking is discarded, which complicates the work. Here, the packaging case 100 in which the pallet 103 is attached to the bottom surface of the lower box 101 has been described as an example, but the situation is the same for a packaging case in which the pallet 103 is not attached to the lower box 101.

  Therefore, in Patent Document 1, a cut 7 is made on the side surface of the exterior box 1, and a cut-and-raised piece 9 is formed by folding the perforation 8 and opening it inwardly to form a cut-and-raised piece 9. A method for preventing the outer box 1 from coming off without using a fastener by inserting it into the hole 3a is disclosed.

Japanese Utility Model Publication No. 6-12327 (see FIGS. 10 and 11)

  According to the method described in Patent Document 1, it is necessary to insert the cut-and-raised piece formed on the side surface of the outer box into the hole of the buffer body, and therefore the cut-and-raised piece when the position of the buffer body placed on the pallet is shifted. Cannot be inserted into the hole of the shock absorber. In that case, it is necessary to remount the packaged body and the buffer body, and the packaging work efficiency is lowered. Further, since it is necessary to make a hole in the buffer body, there is a possibility that the strength of the buffer body may be reduced.

  An object of this invention is to provide the packaging case which can connect a lower box and an upper box easily, without using a fastener in view of the said problem.

  In order to achieve the above object, the present invention provides a lower box having a bottom surface on which an object to be packed is placed, a side wall connected to a peripheral portion of the bottom surface, a top surface facing the bottom surface, and the ceiling. A packaging case for packaging an article to be packaged by covering the lower box with the upper box and connecting the upper box to the lower box. At least one of the side walls is provided with a first engagement piece formed by bending a part of the side wall downward, and a part of the side surface is formed on the side surface overlapping the side wall provided with the first engagement piece. A second engagement piece that is bent upward and engages with the first engagement piece is provided.

  Further, according to the present invention, in the packaging case configured as described above, a relationship between a distance D1 from the tip of the first engagement piece to the bottom surface and a distance D2 from the tip of the second engagement piece to the lower end portion of the side surface. It is characterized by D1> D2.

  According to the present invention, in the packaging case configured as described above, a horizontal fold line or a perforation is formed at a base end portion of the engagement piece located on the outer side of the first engagement piece or the second engagement piece. It is characterized by that.

  In the packaging case having the above-described configuration, the first engagement piece may be a flap that is continuous with the side wall via a fold line, or a portion surrounded by a U-shaped cut formed on the side wall. It is characterized in that it is formed by being bent.

  In the packaging case having the above-described configuration, the second engagement piece may be a flap that is continuous with the side surface via a fold line, or a portion surrounded by a U-shaped cut formed on the side surface. It is characterized in that it is formed by being bent.

  According to the present invention, in the packaging case configured as described above, the flap is a portion sandwiched between two vertical cuts formed at an upper end of the side wall or a lower end of the side surface.

  According to the present invention, in the packaging case configured as described above, the first engagement piece and the second engagement piece are formed on at least two opposing surfaces of the side wall and the side surface.

  According to the first configuration of the present invention, by engaging the first engagement piece provided on the side wall of the lower box and the second engagement piece provided on the side surface of the upper box, Since the lower box and the upper box can be connected without using them, the number of members of the packaging case and the man-hours for packing and unpacking operations can be reduced. Further, by eliminating the plastic fasteners, the packaging case can be made of a single material made only of corrugated cardboard sheets, so that separation work at the time of disposal becomes unnecessary and the burden on the environment can be reduced.

  Moreover, according to the 2nd structure of this invention, in the packaging case of the said 1st structure, from the front-end | tip of a 2nd engagement piece to the lower end part of a side surface, the distance D1 from the front-end | tip of a 1st engagement piece to a bottom face By making D1> D2 the relationship with the distance D2, the first engagement piece and the second engagement piece can be engaged only by covering the upper box on the lower box.

  Moreover, according to the 3rd structure of this invention, in the packaging case of the said 1st or 2nd structure, the base end part of the engagement piece located in the outer side among the 1st engagement piece or the 2nd engagement piece In addition, by forming a horizontal fold line or perforation, the outer engagement piece can be folded outward along the fold line or cut away along the perforation to facilitate the packaging case. Can be unpacked.

  According to the fourth configuration of the present invention, in the packaging case having any one of the first to third configurations, the first engagement piece is formed on the flap that is connected to the side wall via a fold line, or on the side wall. Since the portion surrounded by the U-shaped cut is bent downward, the first engagement piece can be easily formed.

  According to the fifth configuration of the present invention, in the packaging case having any one of the first to fourth configurations, the second engagement piece is formed on the side surface of the flap, or on the side surface via a fold line. Since the portion surrounded by the U-shaped cut is bent upward, the second engagement piece can be easily formed.

  Further, according to the sixth configuration of the present invention, in the packaging case having the fourth or fifth configuration, two vertical cuts are formed at the upper end of the side wall or the lower end of the side surface and sandwiched by the cuts. The sheet for forming the lower box and the upper box is not required to project the flap part from the side wall or the side surface by bending the bent part as a flap to form the first engagement piece or the second engagement piece. The material can be saved by reducing the removal allowance as much as possible.

  According to the seventh configuration of the present invention, in the packaging case having any one of the first to sixth configurations, the first engagement piece and the second engagement piece are opposed to at least one of the side wall and the side surface. By forming in two surfaces, a lower box and an upper box can be connected reliably.

The perspective view of the lower box which comprises the packaging case which concerns on 1st Embodiment of this invention. The perspective view of the upper box which comprises the packaging case which concerns on 1st Embodiment. Partial perspective view showing a state of covering the upper box from above the lower box The fragmentary sectional view which shows the state which a 2nd engagement piece moves below along a 1st engagement piece Partial sectional view showing a state where the lower end of the upper box has reached the bottom surface of the lower box The fragmentary sectional view which shows the state which the 1st engagement piece and the 2nd engagement piece engaged The fragmentary sectional view of the connection part of the lower box and upper box which comprise the packaging case which concerns on 2nd Embodiment of this invention The fragmentary perspective view of the packaging case which shows the other structural example of a 1st engagement piece and a 2nd engagement piece A perspective view of a lower box of a conventional C-type packaging case Side view showing a state of packing a product using a conventional C-type packaging case

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG.1 and FIG.2 is a perspective view of the lower box and upper box which comprise the packaging case which concerns on 1st Embodiment of this invention. The lower box and the upper box are formed by bending a sheet material such as a cardboard sheet punched into a predetermined shape. As shown in FIG. 1, the lower box 1 includes a bottom surface 3 and side walls 4 a to 4 d that are connected to the peripheral edge of the bottom surface 3. A U-shaped notch 5 is formed at a substantially central portion of the pair of opposing side walls 4a and 4b, and a portion surrounded by the notch 5 is bent downward to the inside of the lower box 1 to form a first engagement piece 6a. , 6b are provided. Further, a fold line 11 (see FIG. 3) is formed at the base end portions (base portions) of the first engaging pieces 6a and 6b.

  As shown in FIG. 2, the upper box 2 includes a top surface 7 and side surfaces 8 a to 8 d that are connected to the peripheral edge of the top surface 7. The outer peripheral length of the side surfaces 8a to 8d is slightly smaller than the inner peripheral length of the side walls 4a to 4d of the lower box 1, and when the upper box 2 is put on the lower box 1, the side surfaces 8a to 8d are side walls 4a to 4d. Inscribed in 4d. The second engaging pieces 10a and 10b are provided at the substantially central portion of the lower ends of the side surfaces 8a and 8b overlapping the side walls 4a and 4b by folding the flaps continuously provided via the folding line outwardly from the upper box 2. It has been.

  Next, a procedure for packing a product using the packaging case 100 of the present embodiment will be described. First, after placing a cushioning material and an object to be packed (not shown) on the bottom surface 3 of the lower box 1, the upper box 2 is placed on the lower box 1 so that the side wall 4a and the side surface 8a overlap as shown in FIG. Cover from above.

  At this time, as shown in FIG. 4, the second engagement piece 10a of the upper box 2 is pressed from the first engagement piece 6a while pressing the first engagement piece 6a of the lower box 1 from the inside toward the side wall 4a. It moves downward along the first engagement piece 6a while being pressed against the side surface 8a by the reaction. Since the distance D1 from the tip of the first engagement piece 6a to the bottom surface 3 is designed to be slightly larger than the distance D2 from the tip of the second engagement piece 7a to the lower end of the side surface 8a, the upper box 2 When the lower ends of the side surfaces 8a to 8d reach the bottom surface 3 of the lower box 1, the second engagement piece 10a is separated from the first engagement piece 6a as shown in FIG.

  As a result, the first engaging piece 6a pressed against the side wall 4a is swayed in the direction of the side surface 8a, and the second engaging piece 10a pressed against the side surface 8a is swayed in the direction of the side wall 4a by the restoring force of the sheet. Therefore, the first engaging piece 6a and the second engaging piece 10a overlap in the vertical direction with their tips opposed to each other.

  When the upper box 2 is pulled up in this state, as shown in FIG. 6, the first engagement piece 6a and the second engagement piece 10a are engaged, and the lower box 1 and the upper box 2 are connected. Here, the engagement between the first engagement piece 6a formed on the side wall 4a of the lower box 1 and the second engagement piece 10a formed on the side surface 8a of the upper box 2 has been described. The engagement between the first engagement piece 6b formed on the side wall 4b and the second engagement piece 10b formed on the side surface 8b of the upper box 2 will be described in exactly the same manner.

  According to the configuration of the present invention, since the lower box 1 and the upper box 2 can be connected without using the fastener 105 shown in FIG. 10 of the conventional example, the number of members of the packaging case 100 and the packing and unpacking operations can be reduced. Man-hours can be reduced. Further, by eliminating the plastic fastener 105, the packaging case 100 can be formed of a single material made only of corrugated cardboard sheets, so that the separation work at the time of disposal becomes unnecessary and the burden on the environment can be reduced.

  When unpacking the packaging case 100, the first engagement piece 6a and the second engagement piece 10a are bent by folding the first engagement piece 6a outward along the fold line 11 formed in the first engagement piece 6a. Release the engagement. When the packaging case 100 is not reused, a perforation may be formed instead of the fold line 11, and the first engagement piece 6a may be cut off.

  If the relationship between the distance D1 from the tip of the first engagement piece 6a to the bottom surface 3 and the distance D2 from the tip of the second engagement piece 7a to the lower end of the side surface 8a is D1> D2, the upper box 2 The first engagement piece 6a and the second engagement piece 10a can be engaged by simply covering the lower box 1, but the lower box 1 and the upper box 2 are connected as the difference between D1 and D2 increases. The amount of movement (play) in the up / down direction at the time increases. Further, even if the difference between D1 and D2 is reduced, play for the distance D2 always occurs. Therefore, in order to reduce the play between the lower box 1 and the upper box 2, it is preferable to make the difference between D1 and D2 as small as possible and to make D2 as small as possible within a range that does not impair the engagement strength.

  FIG. 7 is a partial cross-sectional view of a connecting portion of a lower box and an upper box constituting a packaging case according to the second embodiment of the present invention. In this embodiment, the outer peripheral lengths of the side surfaces 8a to 8d of the upper box 2 are formed slightly larger than the inner peripheral lengths of the side walls 4a to 4d of the lower box 1, and the upper box 2 is covered with the lower box 1. The side surfaces 8a to 8d are circumscribed on the side walls 4a to 4d. Therefore, the first engagement piece 6 a is formed by bending downward to the outside of the lower box 1, and the second engagement piece 10 a is formed by bending upward by the inside of the upper box 2. Further, the folding line 11 is formed at the proximal end portion of the second engagement piece 10a.

  Although not described here, the first engagement piece 6b and the second engagement piece 10b have the same configuration as the first engagement piece 6a and the second engagement piece 10a. Further, since the relationship between the distances D1 and D2 is the same as that in the first embodiment, the description thereof is omitted.

  Also in this embodiment, the number of members of the packaging case 100 and the number of man-hours for packing and unpacking operations can be reduced as in the first embodiment. Moreover, the packaging case 100 can be comprised with the single raw material only of a corrugated cardboard sheet, the separation operation | work at the time of disposal becomes unnecessary, and the burden with respect to an environment can also be reduced.

  In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, in each of the above embodiments, the lower box 1 including the bottom surface 3 and the side walls 4a to 4d is used. However, a lower box 101 provided with a pallet 103 as shown in FIG.

  Further, here, the first engaging pieces 6a and 6b are provided on the opposite side walls 4a and 4b of the lower box 1, and the second engaging pieces 10a and 10b are provided on the side surfaces 8a and 8b overlapping the side walls 4a and 4b of the upper box 2. Although provided, the first engagement piece and the second engagement piece may be provided on any one side surface of the packaging case 100, or may be provided on all four side surfaces. However, in order to securely connect the lower box 1 and the upper box 2, the first engaging pieces 6a and 6b and the second engaging pieces 10a and 10b are opposed to at least the packaging case 100 as in the above embodiment. It is preferable to provide on two surfaces.

  Moreover, there is no restriction | limiting also about the shape of 1st engagement piece 6a, 6b, 2nd engagement piece 10a, 10b, and it can design freely. For example, a flap that is connected to the upper end of the side wall 4a via a fold line is bent downward to the inside of the lower box 1 to form the first engagement piece 6a, and a U-shaped cut 5 formed on the side surface 8a. The second engagement pieces 6a and 6b can also be provided by bending the portion surrounded by へ upward to the outside of the upper box 2. Furthermore, both the first engagement pieces 6a and 6b and the second engagement pieces 10a and 10b may be formed by folding the flap, or the first engagement pieces 6a and 6b and the second engagement pieces 10a and 10b. Both may be formed by bending a portion surrounded by a U-shaped cut 5.

  Further, when the first engaging pieces 6a and 6b and the second engaging pieces 10a and 10b are formed by folding the flap, as shown in FIG. 8, two pieces in the vertical direction are provided at the upper end of the side wall 4a and the lower end of the side face 8a. If the first engagement piece 6a and the second engagement piece 10a are formed by bending the notch and forming the first engagement piece 6a and the second engagement piece 10a as a flap, it is not necessary to project the flap portion from the side wall 4a and the side surface 8a. The material can be saved by reducing the sheet material removal allowance (loss) for forming the lower box 1 and the upper box 2 as much as possible.

  INDUSTRIAL APPLICABILITY The present invention can be used for a so-called C-type packaging case including a lower box for placing a product and an upper box connected to the lower box, and at least one of the side walls of the lower box has a side wall. A first engagement piece formed by bending a part downward is provided, and the first engagement piece is formed by bending a part of the side face upward on the side surface of the upper box that overlaps the side wall provided with the first engagement piece. A second engagement piece that engages with the combined piece is provided.

  By utilizing the present invention, it is possible to provide a packaging case in which the number of members and the number of man-hours for packing and unpacking operations are reduced. Further, the packaging case can be made of a single material made only of corrugated cardboard sheets, so that the sorting operation at the time of disposal becomes unnecessary and the environmental load can be reduced.

DESCRIPTION OF SYMBOLS 1 Lower box 2 Upper box 3 Bottom surface 4a-4d Side wall 5 Notch 6a, 6b 1st engagement piece 7 Top surface 8a-8d Side surface 10a, 10b 2nd engagement piece 11 Folding line 100 Packaging case

Claims (7)

A lower box having a bottom surface on which an object to be packed is placed and a side wall provided continuously to a peripheral edge of the bottom surface;
An upper box having a top surface facing the bottom surface, and an upper box having a side surface continuous with a peripheral portion of the top surface and overlapping the side wall;
In a packaging case for packaging an article to be packed by connecting the upper box to the lower box,
At least one of the side walls is provided with a first engagement piece formed by bending a part of the side wall downward, and the side surface overlapping the side wall provided with the first engagement piece is provided on the side surface. A packaging case comprising a second engagement piece formed by bending a part upward and engaging with the first engagement piece.   The relationship between the distance D1 from the tip of the first engagement piece to the bottom surface and the distance D2 from the tip of the second engagement piece to the lower end of the side surface satisfies D1> D2. The packaging case according to 1.   2. A horizontal fold line or a perforation is formed at a base end portion of an engagement piece located outside of the first engagement piece or the second engagement piece. 2. The packaging case according to 2.   The first engagement piece is formed by bending downward a portion surrounded by a flap connected to the side wall via a fold line or a U-shaped cut formed on the side wall. The packaging case according to any one of claims 1 to 3.   The second engagement piece is formed by bending upward a portion surrounded by a flap connected to the side surface via a fold line or a U-shaped cut formed on the side surface. The packaging case according to any one of claims 1 to 4.   The packaging case according to claim 4 or 5, wherein the flap is a portion sandwiched between two vertical cuts formed at an upper end of the side wall or a lower end of the side surface.   The said 1st engaging piece and the said 2nd engaging piece are formed in the at least 2 surface which faces at least among the said side wall and the said side surface, The Claim 1 thru | or 6 characterized by the above-mentioned. Packaging case.

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