JP2015205704A - Packing structure for article to be packed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that impact of a certain degree or higher cannot be absorbed since a cushioning material hits the bottom when large impact is applied in a structure to absorb and mitigate the impact in falling or the like by interposing the cushioning material between an article to be packed and a wooden crate lower base where the article to be packed is placed.SOLUTION: When a wooden crate lower base 14 where an article 12 to be packed is placed is fixed to the article 12 to be packed by using a bolt 24 and a nut 22, elastic force is accumulated on the wooden crate lower base 14 by making a center of the wooden crate lower base 14 bend upward toward the article 12 to be packed in the form of an arch in a state before the cushioning material 28 hits the bottom. Consequently, when the article 12 to be packed falls, and the impact is applied, a synergetic effect to further absorb and mitigate the impact is obtained by primarily absorbing the impact by the cushioning material 28 and secondarily releasing the elastic force on the wooden crate lower base 14.

Description

  The present invention provides a packing structure having excellent characteristics for absorbing impact generated when dropped, for example, during transportation, in a packing form in which an object to be packed such as a refrigerator is placed on a base of a wooden frame and packed. It is.

  For example, when a product such as a refrigerator or a washing machine is shipped from a factory, it is stored in a cardboard box or the like in order to protect these products during transportation or warehouse storage. If the product is heavy, prepare a base made of wood, cardboard block, etc., and store the product on the base in a cardboard box. It comes to unite with. Therefore, a form of packaging in which a product that has a certain amount of weight is placed on the lower base will be described with reference to FIGS. 11 and 12. Since the present invention relates to a packing form in which a product is placed on a base, this product is referred to as a “packaged product”, and the packing form is referred to as a “packing structure”. Furthermore, although the large-sized and heavy commercial refrigerator is illustrated as a to-be-packaged product, it is needless to say that it is applicable not only to this but various heavy goods.

  FIG. 11 is a front view showing a large refrigerator (packaged product) 12 provided with two doors 10 on the upper and lower sides and placed on a lower base 14. The lower base 14 is made of a wooden frame made of wood pieces and square members assembled in a frame shape, and is spanned between a side plate 16 paired on the left and right sides and an upper surface of each side plate 16 as shown in FIG. The upper plate 18 that connects both side plates 16 and the lower plate 20 that spans the lower surface of each side plate 16 and connects the both side plates 16. In the illustrated wooden frame lower base 14, the upper plate 18 is composed of two plate members separated in parallel by a predetermined interval, and the lower plate 20 is also composed of two plate members separated in parallel by a predetermined interval. Yes. The side plate 16 is not only left and right, but a central side plate 16 is provided between both side plates. However, the upper plate 18 and the lower plate 20 may be flat planes formed by laying a large number of plates, or may be stretched like a lever through a large number of plates. Further, the presence of the central side plate 16 is not essential.

  As shown in FIG. 11, after the packaged goods 12 are placed on the wooden frame lower base 14, they are stored in an exterior cardboard box (not shown). However, since the goods 12 to be packed are heavy, there is a risk that positional displacement will occur from the wooden frame lower base 14 during transportation. For this reason, the to-be-packaged goods 12 are fixed to a fixed position with the volt | bolt lower base 14 with a volt | bolt. That is, as shown in FIG. 12 (c), a through hole 12b is formed in the bottom surface 12a of the article 12 to be packed, and a nut 22 is fixed to the upper side of the bottom surface 12a by welding in alignment with the through hole 12b. The female screw hole of the nut 22 preferably employs a so-called “cap nut” that does not penetrate upward. Further, instead of the nut 22, a female screw hole may be directly tapped on the bottom surface 12a. Therefore, the nut 22 described in this specification includes not only a nut as a machine element but also a female screw hole threaded in the bottom surface 12a so as to allow screwing of a bolt (described later).

  Further, as shown in FIG. 12B, a through hole 26 that allows insertion of a bolt 24 that can be screwed into the nut 22 is vertically formed in the upper plate 18 of the wooden frame lower base 14. As shown in FIG. 12 (c), the opening position of the through hole 26 is aligned with the axis of the nut 22 provided on the bottom surface 12 a when the packaged article 12 is correctly placed on the wooden frame lower base 14. It is set to a position where the axes of the through holes 26 are aligned. 12 (a) and 12 (b), two nuts 22 and two through holes 26 are provided, but these can be set to appropriate numbers.

  FIG. 12C is a partial vertical cross-sectional view showing a state in which both the members are tightened and fixed with the bolts 24 after the article to be packed 12 is placed on the wooden frame base 14. That is, when the article 12 to be packed is placed at the correct position on the wooden frame base 14, the axis of the nut 22 provided on the bottom surface 12a and the axis of the through hole 26 are aligned vertically. In this state, when the bolt 24 is inserted into the through hole 26 from below the upper plate 18, the tip of the bolt 24 is aligned with the spiral groove of the nut 22. Next, by screwing the bolt 24 into the nut 22, the bolt and the nut are securely fastened, whereby the article 12 to be packed is fixed to the wooden frame lower base 14 at a fixed position. However, in the packing structure shown in FIG. 11 and FIG. 12, when the article to be packed 12 is dropped to the ground and a strong impact is given to the wooden frame lower base 14, the wooden frame lower base 14 alone may not be able to absorb the impact. is there. At this time, there is a defect that the shock that has not been absorbed is directly transmitted to the packaged product 12, and the bottom surface 12a of the packaged product 12 is deformed or the internal structure of the packaged product 12 itself is damaged.

JP 2010-30621 A

  In order to overcome the above-mentioned drawbacks, in FIG. 2 of Japanese Patent Application Laid-Open No. 2010-30621, for example, thick cushions made of synthetic resin are arranged at the four corners of the bottom of the refrigerator, which is a packaged product. A packaging structure for placing a packaged product on a wooden frame base via the cushion has been proposed. The said cushion removes the four leg parts originally attached to the refrigerator bottom face, and is provided in the arrangement | positioning position of the said four leg parts. Since there is nothing other than the cushion between these products to be packed and the wooden frame lower base, a required space is secured between both members. With this configuration, even when an impact due to a drop / collision is applied during handling such as transportation, the cushion can be compressed or bent to absorb the impact. That is, even if an impact is applied to the wooden frame lower base, the cushion absorbs it, so that damage such as damage to the packaged product is prevented from spreading.

  However, in the packing structure, since the area where the four cushions are in contact with the wooden frame base is small, when the impact from outside is large, the cushion exceeds the compression limit depending on the extent and absorbs the impact. In some cases, the impact is directly transmitted to the packaged product. In addition, the cushion itself may be damaged, and the shock absorbing characteristics may not be sufficiently exhibited. Further, as described above, since the ground contact area with respect to the wooden frame lower base of each cushion is small, the impact stress tends to concentrate on the bottom surface of the packaged product, and the packaged product may be damaged.

  The present invention has been proposed in view of the above-mentioned drawbacks inherent in the prior art to solve this problem.For example, when the impact is applied to the wooden frame base by dropping the packing structure, The shock is absorbed by a cushioning material interposed between the packaged product and the wooden frame base, and when the degree of the impact is greater, the wooden frame base is secondarily deformed to absorb the shock. It is what I did.

In order to solve the above-mentioned problems and achieve the intended purpose, the invention according to claim 1 is a packaging structure comprising a packaged product and a wooden frame lower base on which the packaged product is placed.
A plurality of cushion materials positioned between the bottom surface of the packaged item and the wooden frame lower base;
A nut provided on the bottom surface of the article to be packed, and positioned between the plurality of cushion materials;
A through-hole opened in the wooden frame base so that the nut and the axis are aligned when the packaged product is placed on the wooden frame base via the cushion material;
It is inserted from below into the through hole of the wooden frame lower base, and consists of a bolt that can be screwed into the nut,
As the bolt is screwed into the nut and tightened, the cushion material is first compressed by being compressed by the packaged product and the wooden frame lower base, and then the compression strength of the cushion material is reduced by the wooden frame lower base. If it is superior to the compressive yield strength, the gist of the present invention is to improve the shock absorption characteristics of the wooden frame base by bending the wooden frame base toward the bottom surface of the packaged product.
According to the first aspect of the present invention, the impact of the packaging structure when dropped due to the cushion material interposed between the packaged product and the wooden frame base and the elasticity that the wooden frame lower base is curved and accumulated. Can be effectively absorbed by the synergistic action of the two, thereby effectively preventing damage to the bottom surface of the packaged product.

According to a second aspect of the present invention, as the compression strength of the cushion material is set to be larger than the compression strength of the wooden frame lower base, the bottom surface of the packaged product is increased as the bolt is tightened against the nut. The cushion material is compressed between the wooden frame lower base and the wooden frame lower base, but before reaching the compression limit and bottoming out, the wooden frame lower base is curved in an arch shape toward the bottom surface of the packaged product. It is a summary.
According to the second aspect of the present invention, the cushion material does not bottom out even when a large impact is applied, and the elasticity is accumulated in the wooden frame base by curving the wooden frame base in an arch shape. be able to.

According to a third aspect of the present invention, the plurality of cushion materials are provided at an edge of a bottom surface of the packaged product, and the nut provided on the bottom surface is provided at an intermediate portion sandwiched between the plurality of cushion materials. The gist is that it is located.
According to the invention which concerns on Claim 3, a cushioning material can be provided in the bottom face of a to-be-packaged goods in the manufacturing process of this to-be-packaged goods, and is efficient.

According to a fourth aspect of the present invention, the plurality of cushion materials are provided at an upper edge of the wooden frame lower base, and the through-hole opened in the wooden frame lower base is sandwiched between the plurality of cushion materials. The gist is that it is located at an intermediate site.
According to the invention which concerns on Claim 4, since it should just be provided independently in the wooden frame lower base irrespective of the manufacturing process of the to-be-packaged goods, it is versatile.

The invention according to claim 5 is characterized in that the wooden frame lower base includes a pair of left and right side plates, an upper plate that is located on the upper surface of each side plate and connects both side plates, and is located on the lower surface of each side plate and connects both side plates. It consists of a lower plate that
The gist is that the upper plate is separated into left and right at an intermediate portion thereof.

The invention described in claim 6 is characterized in that the wooden frame lower base includes a pair of left and right side plates, an upper plate that is located on the upper surface of each side plate and connects both side plates, and is located on the lower surface of each side plate and connects both side plates. It consists of a lower plate that
The gist is that the side plate is made of a cushioning material.

The invention according to claim 7 is characterized in that the wooden frame lower base includes a pair of left and right side plates, an upper plate that is located on the upper surface of each side plate and connects both side plates, and is located on the lower surface of each side plate and connects both side plates. It consists of a lower plate that
The gist is that a cushion material is disposed between the lower surface of the upper plate and the upper surface of the side plate.
The invention which concerns on Claims 5-7 can further improve an impact-absorbing characteristic by providing cushioning properties to a wooden frame lower base.

  According to the present invention, due to the cushioning material interposed between the packaged product and the wooden frame base and the elasticity that the wooden frame lower base curves and accumulates, the impact of the packaging structure when dropped is a synergistic effect of both. It can be effectively absorbed by the action, thereby effectively preventing damage to the bottom surface of the packaged product.

It is a front view of the packing structure which concerns on an Example, Comprising: The refrigerator as a to-be-packaged item has shown the state mounted in the wooden frame lower base. It is a perspective view which shows the state which provided the rectangular-shaped cushion material in the four corners of the bottom face in a refrigerator. It is a perspective view which shows the state which provided the bar-shaped cushion material in the right-and-left both sides of the bottom face in a refrigerator. It is a perspective view which shows the state which provided the rectangular-shaped cushion material in the four corners of the upper board in a wooden frame lower base. It is a partially cutaway front view showing a state where a refrigerator is placed on a wooden frame base and both members are fastened with bolts and nuts, and (a) shows an initial state in which the tip of the bolt is screwed into the nut. (B) shows a state in which the center of the wooden frame base is curved upwardly in an arch shape toward the refrigerator by fully screwing the bolt into the nut. It is a perspective view which shows the 1st modification of a wooden frame base. It is a front view shown in the state which mounted the refrigerator in the wooden frame lower base which concerns on the 1st modification shown in FIG. It is a perspective view which shows the 2nd modification of a wooden frame lower base. It is a front view in the state which mounted the refrigerator in the wooden frame lower base which concerns on the 2nd modification shown in FIG. It is a front view shown in the state which mounted the refrigerator in the wooden frame lower base which concerns on a 3rd modification. It is a front view of a prior art which shows the state which mounted the to-be-packaged goods in the fixed position of the wooden frame base. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic explaining the prior art of a packing structure, Comprising: (a) is a bottom perspective view which shows the state which provided the nut in the bottom face of the to-be-packaged goods, (b) is the state which opened the through-hole in the wooden frame base. The perspective view shown, (c) is a partial cross-sectional view showing a state immediately before placing the article to be packaged on the wooden frame base, inserting bolts from below into the through holes established in the wooden frame base, The state just before screwing into the nut provided in the bottom face of is shown.

  Next, the packaging structure according to the present invention will be described with reference to the accompanying drawings by way of preferred embodiments. In this embodiment, the packaged product 12 is the commercial refrigerator described with reference to FIG. 11, and the refrigerator 12 is placed on the wooden frame lower base 14 described with reference to FIGS. 11 and 12B. . Therefore, since the basic configuration of the wooden frame lower base 14 and the like is as described above, the same members are denoted by the same reference numerals and description thereof is omitted. In this embodiment, as shown in FIGS. 1 and 5, a cushion material 28 is interposed between the bottom surface 12 a of the refrigerator 12 and the wooden frame lower base 14, and the wooden frame lower base 14 and the refrigerator 12 are connected to the nut 22. The bolt 24 is fixed by screwing. Then, as the bolt 24 is screwed into the nut 22, the wooden frame lower base 14 bends toward the refrigerator 12 and gives elasticity to the wooden frame lower base 14.

  That is, FIG. 2 is a perspective view of the bottom surface 12a of the refrigerator 12 observed from below, and cushion materials 28 having a required thickness, for example, are fixed to the four corners of the bottom surface 12a with an adhesive. FIG. 3 is the same perspective view as FIG. 2, and a cushion material 28 formed in a long bar shape is bonded and fixed to both the left and right sides of the bottom surface 12 a in the refrigerator 12. The cushion material 28 is not required to be fixed to the bottom surface 12a of the refrigerator 12, and may be provided at the four corners of the upper plate 18 of the wooden frame lower base 14 as shown in FIG. In any case, when the refrigerator 12 is placed on the wooden frame base 14, it is interposed in a compressed state between the refrigerator 12 and the wooden frame base 14, as shown in FIGS. .

  Further, as shown in FIG. 4, a through hole 26 is formed in the upper plate 18 of the wooden frame lower base 14. As shown in FIGS. 1 and 5, the through holes 26 are arranged so that the nut 22 and the axis line provided on the bottom surface 12 a of the refrigerator 12 are vertically aligned when the refrigerator 12 is placed in a fixed position on the wooden frame base 14. Is set to the position to perform. In the embodiment shown in FIG. 4, in the two upper plates 18 that are spaced apart from each other before and behind the wooden frame base 14, the through holes 26 are provided at locations where the central side plate 16 is avoided and close to the central side plate 16. Will be established. 5A, when the refrigerator 12 is correctly placed on the wooden frame base 14, the nuts 22 provided on the bottom surface 12a of the refrigerator 12 are aligned with the through holes 26 formed in the wooden frame base 14. Therefore, when the bolt 24 is inserted into the through hole 26 from below the upper plate 18 of the wooden frame lower base 14, the tip of the bolt 24 abuts the nut 22. Therefore, the refrigerator 12 is securely fixed to the wooden frame lower base 14 by screwing the bolt 24 into the nut 22.

  In this case, in this embodiment, the material of the cushion material 28 is selected so that the compression strength of the cushion material 28 is larger than the compression strength of the wooden frame lower base 14. That is, in this embodiment, as shown in FIG. 5A, when the refrigerator 12 is placed on the wooden frame base 14, there is a gap between the bottom surface 12 a of the refrigerator 12 and the upper plate 18 of the wooden frame base 14. The cushion material 28 is interposed. At this time, if the resistance against the compression of the cushion material 28 is small, as the bolt 24 is screwed into the nut 22, the cushion material 28 is sandwiched between the refrigerator 12 and the wooden frame base 14 and compressed. Will bottom out and lose its elasticity. However, as described above, the proof strength (compression resistance) when the cushion material 28 is compressed is set to be larger than the proof strength when the wooden frame lower base 14 is compressed and deformed by applying external stress to the bolt 24. As the screwing progresses, the cushion material 28 is compressed to some extent, but when the balance between the compression strengths of both is exceeded, as shown in FIG. It comes to curve upward toward the bottom surface 12a. That is, the wooden frame lower base 14 is curved in an upward arch shape at the center thereof, and the cushion material 28 sandwiched between the refrigerator 12 and the wooden frame lower base 14 does not bottom out. The inherent elasticity will be demonstrated. The material of the cushion material 28 is, for example, a material having elasticity such as synthetic rubber and foamed foam. As described above, the compression resistance is higher than the compression resistance when the wooden frame lower base 14 is bent by external stress. The larger one is selected. The cushion material 28 may be a helical spring, a leaf spring, or the like as long as it satisfies the compression drag relationship with respect to the wooden frame lower base 14.

  As described above, after the refrigerator 12 as the packaged item is placed at a fixed position on the wooden frame base 14, the bolt 24 is inserted vertically upward into the through hole 26 formed in the upper plate 18 of the wooden frame base 14. If the bolt 24 is screwed into the nut 22 provided on the bottom surface 12 a of the refrigerator 12 and tightened, the wooden frame lower base 14 faces the bottom surface 12 a of the refrigerator 12 as the screwing proceeds. The arch shape is projected and curved. For this reason, as shown in FIG. 1 and FIG. 5B, the wooden frame lower base 14 is curved in an arch shape with the cushion material 28 interposed between the refrigerator 12 and the wooden frame lower base 14 in a compressive manner. As a result, the elasticity is accumulated.

  Therefore, in the packing structure of the present invention, the cushioning material 28 interposed between the article 12 to be packed and the wooden frame lower base 14 and the elasticity that the wooden frame lower base 14 is curved and accumulated are used to drop the packing structure. Can be effectively absorbed by the synergistic action of the two, thereby effectively preventing damage to the bottom surface 12a and the like of the article 12 to be packed. For example, when the packing structure is dropped vertically from a certain height, the wooden frame lower base 14 is curved in an arch shape upward, so that the wooden frame lower base 14 and the packaged item 12 The cushion material 28 interposed between the left and right of the shock absorber primarily absorbs the impact. Subsequently, the wooden frame lower base 14 curved in an arch shape receives the impact and extends linearly in the horizontal direction, so that the elasticity accumulated in the wooden frame lower base 14 is released, and the impact is reduced. Then absorb. Next, when the packing structure is dropped on one side while being inclined with respect to the ground, the other side lands after the impact is first applied to one side (grounding side) of the wooden frame lower base 14. Also in this case, the impact at the time of falling on one side can be effectively absorbed by releasing the elasticity of the cushion material 28 and the elasticity accumulated in the wooden frame base 14.

[Variation of wooden frame base]
(1) The wooden frame lower base 14 used in the present embodiment preferably has the structure shown in FIG. 4 and FIG. 12B, but various modifications can be considered for the wooden frame lower base 14. It is done. For example, in the first modified example shown in FIG. 6, the wooden frame lower base 14 includes a pair of left and right side plates 16, an upper plate 18 that is located on the upper surface of each side plate 16 and connects both side plates 16, and a lower surface of each side plate 16. The upper plate 18 is separated from the middle portion of the lower plate 20 with a predetermined distance between the left and right sides. As shown in FIG. 7, the refrigerator 12 is placed at a fixed position of the wooden frame lower base 14 configured as described above. Then, by screwing the bolt 24 into the nut 22 and tightening, the upper plate 18 separated to the left and right of the wooden frame lower base 14 becomes elastic with respect to the lower plate 20.
(2) Further, as shown in the second modified example of FIG. 8, the wooden frame lower base 14 includes a pair of left and right side plates 16, an upper plate 18 that is located on the upper surface of each side plate 16 and connects both side plates 16, It may be constituted by a lower plate 20 that is located on the lower surface of the side plate 16 and connects the both side plates 16, and the side plate 16 may be constituted by a cushion material 28. As shown in FIG. 9, the refrigerator 12 is placed at a fixed position of the wooden frame lower base 14 configured as described above, and the refrigerator 12 is securely fixed to the wooden frame lower base 14 by tightening the bolt 24 and the nut 22. . At this time, since the cushion material 28 is interposed between the side plates 16 and the upper plate 18 in the wooden frame lower base 14, the cushion material 28 suitably absorbs the impact when the packaging structure is dropped.
(3) Further, as shown in the third modification of FIG. 10, the wooden frame lower base 14 includes a pair of left and right side plates 16, an upper plate 18 that is located on the upper surface of each side plate 16 and connects the both side plates 16; The lower plate 20 is located on the lower surface of each side plate 16 and connects the both side plates 16, and the cushion material 28 is disposed between the lower surface of the upper plate 18 and the upper surface of the side plate 16. Good.

12 refrigerator (packaged goods), 12a bottom surface, 14 wooden frame lower base, 16 side plate, 18 upper plate,
20 Lower plate, 22 Nut, 24 bolt, 26 Through hole, 28 Cushion material

Claims (7)

In the packing structure consisting of the article to be packed (12) and the wooden frame lower base (14) on which the article to be packed (12) is placed,
A plurality of cushion materials (28) positioned between the bottom surface (12a) of the packaged goods (12) and the wooden frame lower base (14);
Provided on the bottom surface (12a) of the article to be packed (12), nuts (22) located between the plurality of cushion materials (28),
When the article to be packed (12) is placed on the wooden frame lower base (14) via the cushion material (28), the nut (22) and the axis line are aligned with the wooden frame lower base (14). The established through hole (26),
It is inserted from below into the through hole (26) of the wooden frame lower base (14), and comprises a bolt (24) that can be screwed into the nut (22),
As the bolt (24) is screwed into the nut (22) and tightened, the cushion material (28) is first clamped between the packaged item (12) and the wooden frame base (14). When the compression resistance of the cushion material (28) is superior to the compression resistance of the wooden frame base (14), the wooden base (14) is directed toward the bottom surface (12a) of the packaged item (12). The package structure of the packaged product is configured to improve the shock absorption characteristics of the wooden frame lower base (14) by being bent in a curved manner.   By setting the compression strength of the cushion material (28) larger than the compression strength of the wooden frame lower base (14), as the bolt (24) is tightened with respect to the nut (22), The cushion material (28) is compressed between the bottom surface (12a) of the product (12) and the wooden frame lower base (14), but before reaching the compression limit and bottoming out, the wooden frame lower base ( The package structure of the packaged product according to claim 1, wherein 14) reaches an arch shape toward the bottom surface (12a) of the packaged product (12).   The plurality of cushion materials (28) is provided at an edge of the bottom surface (12a) of the packaged product (12), and the nut (22) provided on the bottom surface (12a) is formed of the plurality of cushion materials ( The packing structure for packed products according to claim 1, which is located at an intermediate part sandwiched between 28).   The plurality of cushion materials (28) are provided at an upper edge of the wooden frame lower base (14), and the through-hole (26) opened in the wooden frame lower base (14) includes the plurality of cushion materials ( The packing structure for packed products according to claim 1, which is located at an intermediate part sandwiched between 28). The wooden frame lower base (14) includes a pair of left and right side plates (16), an upper plate (18) that is located on the upper surface of each side plate (16) and connects both side plates (16), and each side plate (16). It consists of a lower plate (20) that is located on the lower surface and connects both side plates (16),
The packing structure of the packaged product according to claim 1, wherein the upper plate (18) is separated into left and right at an intermediate portion thereof. The wooden frame lower base (14) includes a pair of left and right side plates (16), an upper plate (18) that is located on the upper surface of each side plate (16) and connects both side plates (16), and each side plate (16). It consists of a lower plate (20) that is located on the lower surface and connects both side plates (16),
The packing structure for packed items according to claim 1, wherein the side plate (16) is made of a cushioning material (28). The wooden frame lower base (14) includes a pair of left and right side plates (16), an upper plate (18) that is located on the upper surface of each side plate (16) and connects both side plates (16), and each side plate (16). It consists of a lower plate (20) that is located on the lower surface and connects both side plates (16),
The packing structure for a packaged product according to claim 1, wherein a cushion material (28) is disposed between the lower surface of the upper plate (18) and the upper surface of the side plate (16).

Images