Corner protection material

Abstract

A corner bead material is provided with: two rectangular surface sections having a curved section extending parallel to one side therebetween; a cutout extending from one side of at least one of the two surface portions to the bent portion; and a bending line extending from the end of the cutout to one side of the other surface portion.

Description

Technical Field

[0001] The invention relates to a corner protection material. Background Art

[0002] Japanese Patent No. 4186104 as Patent Document 1 describes a sheet for preventing cargo collapse, which covers and protects cargo stacked on a loading platform to prevent it from collapsing or being damaged.

[0003] Patent document 1 discloses that the cargo collapse prevention sheet is composed of a 16-sided top face portion having a plurality of tapered portions at the center of the top face portion, four side pressing portions which are substantially triangular and connected to both ends of the top face portion and have a spatial shape at the center of the upper surface, a belt portion equipped with a buckle for adjusting the length of engagement with the front end of the side pressing portion, and a locking hook fixed to the front end of the belt portion.

[0004] Japanese Patent Application Laid-Open No. 2006-131235 as Patent Document 2 describes a cargo collapse prevention tool.

[0005] In addition, Patent Document 2 states that the cargo collapse prevention tool is manufactured by dividing a cargo collapse prevention sheet that is wound around the side of cargo stacked on a cargo pallet or a cart to prevent the cargo from collapsing into a plurality of pieces in the winding length direction, and by providing a belt that is slidably held on the cargo collapse prevention sheet and a fastener that can be fastened freely on the belt.

[0006] Japanese Patent No. 7265245, which is Patent Document 3, describes a partition member of a container and the like.

[0007] Patent document 3 states that the partition member is a corrugated paper packaging buffer installed at the end of the product stored in the packaging box, and has a product storage recess surrounded by a lower support portion, a side support portion and a rear end support portion and open upward and inward.

[0008] Patent Document 1: Japanese Patent No. 4186104 (Claim 1, Figure 1-2 )

[0009] Patent Document 2: Japanese Patent Application Publication No. 2006-131235 (Claim 1, Figure 1-6 )

[0010] Patent Document 3: Japanese Patent No. 7265245 (Claim 1, Figure 1-3 ) Summary of the invention

[0011] The present invention provides a corner protecting material which can be used by deforming a surface portion that contacts a corner portion of a load.

[0012] A first aspect of the present invention is a corner protector comprising:

[0013] Two surface portions, separated by a curved portion extending parallel to one side and having a rectangular shape;

[0014] a cutout extending from one side of at least one of the two surface portions to the curved portion; and

[0015] The bending line extends from the end of the cut to one side of the other surface portion.

[0016] A second aspect of the present invention is the corner protector of the first aspect, wherein the folding line is interrupted and a second cut is provided in the other surface portion.

[0017] A third aspect of the present invention is the corner protector of the second aspect, wherein the second cut is a cut consisting of a continuous fold line.

[0018] A fourth aspect of the present invention is the corner protector of the second aspect, wherein the second cutout is a cutout having three or more line portions extending so as to intersect a direction parallel to the bent portion at different angles.

[0019] A fifth aspect of the present invention is the corner protector of the fourth aspect, wherein the second cutout is a cutout having a curved portion.

[0020] According to the sixth aspect of the present invention, in the corner protector of the second aspect, when the other surface portion is bent on the bending line, a protrusion and a depression of similar shape formed by the second incision appear on the folded portion of the other surface portion across the bending line.

[0021] In the seventh embodiment of the present invention, in the corner protection material of the above-mentioned sixth embodiment, when two of the corner protection materials are used, the two corner protection materials are connected to each other by embedding the protrusion in one corner protection material into the recessed portion in the other corner protection material, and on the other hand, embedding the protrusion in the other corner protection material into the recessed portion in the one corner protection material.

[0022] An eighth aspect of the present invention is the corner protector according to any one of the first to seventh aspects, wherein the cutout is configured as a third cutout having a curved portion.

[0023] A ninth aspect of the present invention is the corner protector of the eighth aspect, wherein the curved portion is a portion consisting of a curved line whose movement trajectory does not overlap when the other surface portion is bent on the bending line.

[0024] According to the tenth aspect of the present invention, in the corner protector of the eighth aspect, when the other surface portion is bent on the bending line, the end portion of the one surface portion cut by the third incision appears as an opposite curved end portion formed by the third incision.

[0025] The 11th aspect of the present invention is the corner protector of the 10th aspect, wherein when two corner protectors are used, the two corner protectors are connected to each other by fitting the curved end portion of one corner protector with the curved end portion of the other corner protector.

[0026] A twelfth aspect of the present invention is the corner protector according to any one of the second to eleventh aspects, wherein a portion of the fold line from one side of the other surface portion to the second notch is formed as a fourth notch.

[0027] A thirteenth aspect of the present invention is the corner protector according to any one of the first to twelfth aspects, wherein the corner protector is composed of a single bendable surface material.

[0028] A fourteenth aspect of the present invention is the corner protector according to the thirteenth aspect, wherein the surface material is a paper material.

[0029] Effects of the Invention

[0030] According to the corner protector of the first aspect, the surface portion that comes into contact with the corner portion of the loaded object can be deformed for use.

[0031] According to the corner protector of the second aspect, when the other surface portion is folded back on the folding line, a protrusion and a depression of a similar shape formed by the second cut can appear in the folded back portion.

[0032] According to the corner protector of the third aspect, it is possible to form protrusions and recesses having similar shapes to the angular corners.

[0033] According to the above-mentioned fourth embodiment of the corner protector, compared with the case where the second incision is a incision having two or less line portions that intersect at different angles with a direction parallel to the bending portion, when a protrusion and a recessed portion of similar shape are used as a connecting unit of two corner protectors, the protrusion and the recessed portion can be provided as a connecting unit that is not easily pulled out in a direction parallel to the bending portion.

[0034] According to the corner protector of the fifth aspect, compared with the case where the second cutout is formed of a continuous fold line, the protrusions and recesses of similar shapes formed by the second cutout can be provided as protrusions and recesses that are easily fitted when used as a connecting unit for two corner protectors.

[0035] According to the corner protector of the sixth aspect, the protrusion and the recess having similar shapes formed by the second cutout can be used as a connecting means for two corner protectors.

[0036] According to the corner protector of the seventh aspect, two corner protectors can be used in a state of being connected by the protrusions and recesses having similar shapes.

[0037] According to the above-mentioned 8th mode of corner protection material, compared with the case where the incision is composed only of a straight line, when the other surface portion is bent on the bending line, an opposite curved end portion formed by the third incision having a curved portion can appear at the end portion of one surface portion cut by the incision.

[0038] According to the corner protector of the ninth aspect, when the other surface portion is bent on the bending line, the end portions of one surface portion cut by the cut can be cut without colliding with each other.

[0039] According to the corner protector of the tenth aspect, the opposite curved end portions can be used as a connecting means for two corner protectors.

[0040] According to the corner protector of the eleventh aspect, two corner protectors can be used in a state of being connected by opposite curved end portions.

[0041] According to the above-mentioned twelfth embodiment of the corner protector, compared with the case where the portion of the bending line to the second incision is not incised, when the other surface portion is bent on the bending line, a protrusion and a recessed portion of a similar shape formed by the second incision can easily appear in the bent portion.

[0042] According to the corner protector of the thirteenth aspect, compared with a case where the corner protector is not composed of a single surface material, waste of material can be reduced and the corner protector can be manufactured simply.

[0043] According to the corner protector of the fourteenth aspect, compared with the case where the surface material is not a paper material, a light-weight corner protector that can be easily bent can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Embodiments of the present invention will be described in detail with reference to the following drawings.

[0045] Figure 1 is a perspective view of the corner protector according to Embodiment 1;

[0046] Figure 2 Yes means Figure 1 A three-dimensional diagram of a first deformation mode of the corner protection material;

[0047] Figure 3 middle, Figure 3 (A) means Figure 1A three-dimensional diagram of the second deformation mode of the corner protection material, Figure 3 (B) indicates observation from above Figure 3 (A) is a top view of the state of the deformation mode of the corner protection material;

[0048] Figure 4 middle, Figure 4 (A) is a schematic three-dimensional view showing the load and a portion of the corner protection material. Figure 4 (B) means Figure 4 (A) is a schematic perspective view of an example of a portion of a corner guard material used in a load;

[0049] Figure 5 is a schematic perspective view showing a load and another corner protection material;

[0050] Figure 6 is a perspective view of a corner protector according to Embodiment 2;

[0051] Figure 7 yes Figure 6 Four-sided view of the corner protection material;

[0052] Figure 8 Yes means Figure 6 A schematic diagram of the structure of the second cutout in the corner protector;

[0053] Fig. 9 middle, Fig. 9 (A) means Figure 6 A schematic diagram showing the structure of the third cut in the corner protector. Fig. 9 (B) means it is bent. Fig. 9 (A) is a schematic diagram of the state of the third cut when the corner guard material is used;

[0054] Fig.10 middle, Fig.10 (A) means Figure 6 A three-dimensional diagram of a first deformation mode of the corner protection material; Fig.10 (B) is Fig.10 (A) is a front view of the method;

[0055] Fig.11 middle, Fig.11 (A) means Figure 6 A three-dimensional diagram of a second deformation mode of the corner protection material; Fig.11 (B) is Fig.11 (A) is a top view of the method;

[0056] Fig.12 middle, Fig.12 (A) means Fig.11 A side view of the bent portion of the corner guard material of the second deformation mode, Fig.12 (B) includes Fig.12 (A) is a front view of the bent portion;

[0057] Fig.13 middle, Fig.13 (A) means to make Fig.11 A three-dimensional view of the state before the corner guard materials of the second deformation mode are connected to each other; Fig.13 (B) means to make Fig.13 (A) is a three-dimensional view of a state where the corner protection materials are connected to each other;

[0058] Fig.14 middle, Fig.14 (A) means to make Fig.11 A front view of a portion of the operation of connecting the corner guard materials to each other in the second deformation mode; Fig.14 (B) means to make Fig.14 (A) is a front view of a state where the corner protection materials are connected to each other;

[0059] Fig.15 is a perspective view of a corner protector according to Embodiment 3;

[0060] Fig.16 yes Fig.15 Four-sided view of the corner protection material;

[0061] Fig.17 Yes means Fig.15 A schematic diagram of the structure of the third cut in the corner protector;

[0062] Fig.18 middle, Fig.18 (A) means Fig.15 A three-dimensional diagram of a first deformation mode of the corner protection material; Fig.18 (B) is Fig.18 (A) is a front view of the method;

[0063] Fig.19 Yes means Fig.15 A three-dimensional diagram of a second deformation mode of the corner protection material;

[0064] Fig. 20 middle, Fig. 20 (A) means to make Fig.15 A three-dimensional view of the state before the corner guard materials of the second deformation mode are connected to each other; Fig. 20 (B) means to make Fig. 20 (A) is a three-dimensional view of a state where the corner protection materials are connected to each other;

[0065] Fig.21 It means to make Fig.15 A front view of a state in which the corner protection materials are connected to each other;

[0066] Fig. 22 is a perspective view of a corner protector according to Embodiment 4;

[0067] Fig.23 yes Fig. 22 Four-sided view of the corner protection material;

[0068] Fig.24 middle, Fig.24 (A) means Fig. 22 A schematic diagram of the structure of the second cut in the corner protector; Fig.24 (B) means it is bent. Fig.24 (A) is a schematic diagram showing the state of the protrusions and recesses that appear at the end of the corner protector;

[0069] Fig.25 Yes means Fig. 22 A three-dimensional diagram of a second deformation mode of the corner protection material;

[0070] Fig.26 It means to make Fig. 22 A three-dimensional diagram of a state in which the corner protection materials are connected to each other;

[0071] Fig. 27 middle, Fig. 27 (A) means to make Fig. 22 A three-dimensional view of the state before the corner guard materials of the second deformation mode are connected to each other; Fig. 27 (B) means to make Fig. 27 (A) is a three-dimensional view of a state where the corner protection materials are connected to each other;

[0072] Fig.28 middle, Fig.28 (A) is a schematic diagram showing the structure of the second cutout and the like in the corner protector of Modification Example 1, Fig.28 (B) is a schematic diagram showing the structure of the second cutout and the like in the corner protector of Modification Example 2;

[0073] Fig.29 is a three-dimensional view of a corner protection material of Modification 3;

[0074] Fig.30 Yes means Fig.29 A three-dimensional diagram of a third deformation mode of the corner protection material;

[0075] Fig.31 middle, Fig.31 (A) is a perspective view showing a state where the corner guards of Modification Example 6 are connected to each other. Fig.31 (B) means Fig.31 The main view of the state of (A);

[0076] Fig.32is a perspective view of a corner protection material of Modification 7;

[0077] Fig.33 middle, Fig.33 (A) is a schematic diagram showing the structure of the main part of the corner protection material of the comparative object; Fig.33 (B) is a schematic diagram showing the structure of the main part of another comparative corner protector.

[0078] Explanation of symbols

[0079] 1-corner protection material, 2, 3-surface part, 4-bending part, 5-incision, 6-bending line, 7-second incision, 8-third incision, 9-fourth incision, 10-surface material, 73, 74-fold line, 75-protrusion, 76-recess, 85, 86-opposite curve ends, E-direction parallel to the bending part. DETAILED DESCRIPTION

[0080] Hereinafter, the mode for carrying out the present invention will be described.

[0081] Implementation method 1.

[0082] Figure 1 It is a perspective view of the corner protector 1A according to the first embodiment of the present invention.

[0083] In this specification and the drawings, substantially the same components are denoted by the same reference numerals, and repeated description of the same components is omitted in this specification.

[0084] (Overview of Corner Protector 1A)

[0085] like Figure 1 As shown, the corner protector 1A is a member including two rectangular surface portions 2 and 3 sandwiching a bent portion 4 , a cutout 5 , and a bending line 6 .

[0086] The corner protector 1A is composed of a single bendable surface material 10 .

[0087] Then, if Figure 4 As illustrated, when the same type of cargo 101 is transported as a load object 100 stacked in multiple layers on a pallet 200 , the corner protector 1A is used as a member that abuts against a desired corner of the load object 100 to suppress the load from collapsing.

[0088] In this case, the corner protector 1A can be used in a bent state as described later in addition to being used in a state where the two surface portions 2 and 3 are not bent. The cargo 101 is cargo in which products or other items are packed in boxes of the same size. Furthermore, the cargo 101 may be cargo having substantially the same appearance shape of the corner portions and being loadable.

[0089] Furthermore, when the corner protector 1A is used for transportation, Figure 4 As shown, a packaging film 91 is wrapped around a desired outer surface such as the side surface of the object 100 including the corner protector 1A.

[0090] Figure 4 Reference numeral 92 in (B) and the like indicates a packaging film roll formed by winding a packaging film 91 around a winding core. Reference numerals 91a and 91b indicate portions of the packaging film 91 that are wound around both side surfaces of the object 100.

[0091] The two surface parts 2 and 3 are two surfaces of the rectangular surface material 10 divided by the linear curved part 4 extending parallel to one side thereof as a boundary. The rectangle is a long rectangle or a square.

[0092] The bent portion 4 is a portion in which the surface material 10 is bent at a substantially right angle. In addition, the bent portion 4 may be a bent portion formed by bending the surface material 10 when the corner protector 1A is used as described later.

[0093] like Figure 1 As shown, the curved portion 4 in the first embodiment is a linear portion extending parallel to the side 10a of one of the long sides of the rectangular surface material 10. And, the curved portion 4 is formed, for example, in a manner extending from the approximate center of the upper side 10b of one of the short sides of the rectangular surface material 10 toward the center of the lower side 10c of the other short side.

[0094] Therefore, if Figure 1 As shown, both the surface portions 2 and 3 in the first embodiment are rectangular surface portions that are long in the up-down direction.

[0095] In this case, the surface portion 2 has a side 2a as a long side located on the opposite side of the curved portion 4, and an upper side 2b and a lower side 2c as two short sides. Also, the surface portion 3 has a side 3a as a long side located on the opposite side of the curved portion 4, and an upper side 3b and a lower side 3c as two short sides.

[0096] The surface parts 2 and 3 are each set to have a predetermined length of each side and a predetermined thickness according to conditions such as use.

[0097] The cutout 5 is a portion cut from one side of at least one of the two surface portions 2 and 3 to reach the bent portion 4 .

[0098] The cutout 5 in the first embodiment is provided as a cutout extending straightly from the side 2a of one surface portion 2 to the curved portion 4. The cutout 5 is cut from a predetermined position of the side 2a of the surface portion 2. Of course, the cutout 5 may also be provided in the other surface portion 3.

[0099] The incision 5 is a linear incision, and can also be referred to as a first incision from the viewpoint of distinguishing it from a second incision 7 or a fourth incision 9 described later.

[0100] The bending line 6 is a line for facilitating the bending work, and is formed so as to extend from the end 5 b of the cutout 5 to one side of the other surface portion 3 . Figure 1 The symbol 5a in FIG. 5 represents the starting end of the cut 5 .

[0101] The bending line 6 in the first embodiment is formed as a portion extending in a straight line from the end 5 b of the cutout 5 to the side 3 a of the other surface portion 3 .

[0102] The bending line 6 may be any bending line suitable for the type or bending degree of the surface material 10 of the corner protector 1A. For example, the bending line 6 may be a bending line with a desired depth cut on the surface opposite to the bending direction or a bending line with a punched surface.

[0103] Incidentally, when the surface material 10 is a paper material such as corrugated paper, the folding lines 6 provided on the surface material 10 may be referred to as ruled lines.

[0104] (Deformation of corner protector 1A)

[0105] The corner protector 1A can be formed as follows by, for example, bending the surface portion 3 at a substantially right angle on the bending line 6. Figure 2 A corner protector 1Ab according to a first modified embodiment is shown.

[0106] The first deformation mode of the corner protector 1Ab is obtained when the surface portion 3 is bent outward at a substantially right angle on the bending line 6 and stops. The bending of the surface portion 3 at this time is achieved by the presence of a cutout 5 of the surface portion 2 continuously provided from one end of the bending line 6 intersecting the bent portion 4.

[0107] In the corner protector 1Ab of the first modified embodiment, the surface portion 3 is deformed into a shape divided into a lower portion 31 remaining with the bending line 6 as a boundary and an upper portion 32 bent at a substantially right angle to the lower portion 31 .

[0108] In the corner protector 1Ab of the first modified embodiment, the surface portion 2 is deformed into a shape divided into a lower portion 21 remaining after being cut by the cutout 5 and an upper portion 22 tilted at a substantially right angle to the lower portion 21 .

[0109] like Figure 2 As shown, at this time, the lower portion 21 of the surface portion 2 has a straight cut edge 5c formed by the cut 5. Also, at this time, the upper portion 22 of the surface portion 2 has a straight cut edge 5d formed by the cut 5.

[0110] Furthermore, the corner protector 1A can be formed, for example, by folding the surface portion 3 along the folding line 6. Figure 3 A corner protector 1Ac according to a second modified embodiment shown in (A).

[0111] The corner protector 1Ac of the second modified embodiment is obtained by bending the surface portion 3 at an angle of approximately 180 degrees on the bending line 6. The surface portion 3 at this time is configured so as not to be broken on the bending line 6.

[0112] In the corner protector 1Ac of the second modified embodiment, the surface portion 3 is deformed into a shape in which the lower portion 31 and the upper portion 32 overlap back to back via the folding line 6 .

[0113] Furthermore, in the corner protector 1Ac of the second modified embodiment, the surface portion 2 is deformed into a shape in which the lower portion 21 and the upper portion 22 are adjacent to each other with the bent portion 4 interposed therebetween.

[0114] Furthermore, when viewed from above, Figure 3 As shown in (B), the corner protector 1Ac of the second modified embodiment also has a T-shaped portion.

[0115] That is, the corner protector 1Ac, when viewed from above, has a T-shape in which the surface portion 3 in which the lower portion 31 and the upper portion 32 overlap and the surface portion 2 in which the lower portion 21 and the upper portion 22 are adjacent intersect at a substantially right angle.

[0116] (Example of using the corner protector 1A)

[0117] like Figure 4 As shown, the corner protector 1A can be used directly in an undeformed state. The undeformed state is a state in which the surface portion 3 and the like are not bent or deformed.

[0118] For example, Figure 4 As shown in (B), the undeformed corner protection material 1A is pressed against the four corners 100a, 100b, 100c, and 100d located on the side of the load 100 (refer to Figure 4 (A)) is used.

[0119] At this time, the corner protector 1A is provided so as to be pressed against the four corners 100a, 100b, 100c, and 100d with the bent portion 4 as a reference.

[0120] When the corner protector 1A is used, finally, the wrapping film 91 is wrapped around the side of the object 100 including the corner protector 1A. The wrapping film 91 is wrapped around the object 100 while gradually shifting from the lower side to the upper side.

[0121] Thus, the corner protectors 1A are kept in close contact with the corners 100a, 100b, 100c, and 100d of the object 100. The corners of the cargo 101 located at the corners of the object 100 are covered by the corner protectors 1A and are not easily moved.

[0122] Therefore, when the corner protector 1A is used in the undeformed state, it is possible to suppress the occurrence of cargo collapse at the four corners 100 a , 100 b , 100 c , and 100 d as an example of the corners of the loaded object 100 .

[0123] Incidentally, the corner protector 1A in this case can be used in a state where the upper end (upper side) thereof is stopped at a position below the upper end of the load 100 by a predetermined distance, for example.

[0124] This is a countermeasure in consideration of the fact that after loading, the cargo 101 of the load 100 is compressed (shrinked) in the vertical direction over time due to the influence of weight etc., and as a result, the entire loading height of the load 100 becomes lower than the initial height dimension.

[0125] Thus, even when the loading height of the loaded object 100 decreases during loading, the corner protector 1A can avoid the problem of the upper end of the corner protector 1A protruding from the loaded object 100 .

[0126] Furthermore, the corner protector 1A in an undeformed state may be used in contact with a corner portion existing on the upper surface of the loaded object 100 , for example.

[0127] Then, if Figure 4 As shown, the corner protection material 1A can be used as the corner protection material 1Ac of the second deformation mode described above (refer to Figure 3 ) and use.

[0128] For example, Figure 4 As shown in (B) , the corner protector 1Ac of the second modified embodiment is used in a state of being pressed against at least a part of the corners of the cargoes 101 adjacent to each other vertically and horizontally on the inner side of the side surface of the loaded object 100 .

[0129] To further explain, the corner protector 1Ac at this time is set to a state where a portion consisting of a lower portion 31 and an upper portion 32 partially overlapped by folding back a portion of the surface portion 3 constituting a portion of the T-shaped portion is inserted between adjacent goods 101 of the load 100. Furthermore, the corner protector 1Ac at this time is set to a state where a portion consisting of a lower portion 21 and an upper portion 22 adjacent to each other by cutting a portion of the surface portion 2 constituting a portion of the T-shaped portion is pressed against a portion of each side surface (surface) of the adjacent goods 101.

[0130] And, if Figure 4 As shown in (B), the corner protector 1Ac at this time is used, for example, as follows when the cargoes 101 stacked on the inner side of one side of the load 100 are used as the second layer from the bottom.

[0131] In this case, when the second layer of the target goods 101 is loaded, the folded surface portion 3 of the corner protector 1Ac is inserted between the goods 101, and the entire corner protector 1Ac is placed in an independent state. Thereafter, the third and subsequent layers of goods 101 are stacked on both sides of the folded surface portion 3 of the corner protector 1Ac.

[0132] Furthermore, in this case, when the fourth and fifth layers of the goods 101 are stacked, the side surfaces (surfaces) of these goods 101 are covered by the surface portions 2 of the corner protectors 1Ac that are cut and adjacent to each other.

[0133] When the corner protector 1Ac is used, finally, the packaging film 91 is also wrapped around the side surface of the loaded object 100 including the corner protector 1Ac.

[0134] Thus, the corner protectors 1Ac are kept in close contact with a portion of the cargo 101 stacked inside the side of the load 100. Furthermore, the load 100 is kept in a state where the corners of the cargo 101 stacked up and down and left and right inside the load 100 are covered by the corner protectors 1Ac and are not easily moved.

[0135] Therefore, when the corner protector 1Ac of the second modified embodiment is used as described above, it is possible to suppress the occurrence of cargo collapse at an inner position such as the center portion of the loaded object 100 .

[0136] In addition, if Figure 5 As shown, the corner protection material 1A can also be used as the corner protection material 1Ab of the first deformation mode described above (refer to Figure 2 ) and use.

[0137] For example, Figure 5 As shown, similarly to the corner protector 1Ac of the second modification, the corner protector 1Ab of the first modification is used while being pressed against at least a portion of the corners of the cargoes 101 adjacent to each other vertically and horizontally inside the side surface of the load 100 .

[0138] To further explain, the corner protector 1Ab at this time is set to the following state: the lower portion 31 and the upper portion 32 of the surface portion 3 in a state of being bent at a substantially right angle on the bending line 6 are inserted between adjacent goods 101 of the load 100. And, the corner protector 1Ab at this time is set to the following state: the lower portion 21 and the upper portion 22 of the surface portion 2 cut by the cutout 5 and in a positional relationship of intersecting at a substantially right angle are pressed against a part of each side surface (surface) of the adjacent goods 101.

[0139] When the corner protector 1Ab of the first modification is used, it is possible to suppress the occurrence of cargo collapse at an inner position such as the center of the loaded object 100, in substantially the same manner as when the corner protector 1Ac of the second modification is used.

[0140] Implementation method 2.

[0141] Figure 6 and Figure 7 It is a perspective view and four-sided views of the corner protector 1B according to the second embodiment of the present invention.

[0142] When compared with the corner protector 1A according to the first embodiment, the corner protector 1B according to the second embodiment is different in that the second notch 7A is added and the notch 5 is changed to a third notch 8A, but otherwise has substantially the same structure.

[0143] In addition, the corner protector 1B has the third cutout 8A and the folding line 6 disposed substantially at the center of the upper direction of the surface portions 2 and 3. The upper direction of the surface portions 2 and 3 also corresponds to the longitudinal direction thereof.

[0144] The second cutout 7A is a cutout provided in the surface portion 3 to interrupt the bending line 6 .

[0145] The second cut 7A can also be said to be a continuous linear cut that starts from a first position midway along the bending line 6 to a portion bounded by the bending line 6 of the surface portion 3 and then returns to a second position different from the first position of the bending line 6 .

[0146] Figure 6 Reference numeral 6a in the figure indicates an outer bending line portion existing outside the bending line 6 interrupted by the second cutout 7A. Reference numeral 6b indicates an inner bending line portion existing inside the interrupted bending line 6. The line portion refers to a part of the entire line.

[0147] like Figure 8 As shown, the second cutout 7A in the second embodiment is configured as a linear cutout having rising line portions 71 a and 71 b and a connecting line portion 72 .

[0148] The rising line portions 71 a and 71 b are line portions that rise upward at locations where the bending line 6 is interrupted.

[0149] The rising line portions 71a and 71b are both line portions of the same length consisting of a curve that bends once inward. Figure 8 As shown, the rising line portions 71 a and 71 b are also line portions composed of curved lines extending so as to intersect the direction E parallel to the curved portion 4 at two or more different angles.

[0150] On the other hand, the connecting line portion 72 is a line portion that connects the upper ends of the rising line portions 71 a and 71 b.

[0151] The connecting line portion 72 is formed of a curved line that is curved in an arc shape. The connecting line portion 72 is formed of a curved line that extends so as to intersect the direction E parallel to the curved portion 4 at two or more different angles.

[0152] Thus, the second cutout 7A has three line portions extending at different angles to intersect the direction E parallel to the bent portion 4. The line portions extending at different angles to intersect in the second cutout 7A are two rising line portions 71a and 71b and one connecting line portion 72.

[0153] The third incision 8A is an incision having a curved portion 81 instead of the incision 5 composed of straight lines in the first embodiment.

[0154] like Fig. 9 As shown in FIG. 8A , the third cutout 8A in the second embodiment is configured as a cutout composed of a line formed by combining a curved portion 81 and a straight portion 82 .

[0155] The straight portion 82 has an inclined portion 82a and a horizontal portion 82b.

[0156] The inclined portion 82a is a straight line portion that is inclined from the side edge 2a which is also a long side of the surface portion 2 to Fig. 9 (A) is a position rising to the right and close to the surface portion 3.

[0157] The horizontal portion 82 b is a straight portion that extends horizontally from the curved portion 4 in the left-right direction to a position near the lower side of the distal end of the inclined portion 82 a .

[0158] The curved portion 81 includes a large curved portion 81 a , a small curved portion 81 b , and a connecting curved portion 81 c .

[0159] The large curved line portion 81 a is an arc-shaped curved line portion that is connected to the distal end of the inclined portion 82 a of the straight line portion 82 and is curved with a relatively large curvature in a manner of turning back toward the lower side.

[0160] The small curve portion 81b is an arcuate curve portion which is connected to the end of the horizontal portion 82b of the straight portion 82 and is bent with a relatively small curvature so as to bend back upward. The small curve portion 81b has a relationship in which its curvature is smaller than that of the large curve portion 81a.

[0161] The connecting curve portion 81 c is an arc-shaped curve portion that is bent once toward the side 2 a of the surface portion 2 so as to connect the lower end of the large curve portion 81 a and the upper end of the small curve portion 81 b .

[0162] Furthermore, the connecting curve portion 81c is a curve portion composed of an arc centered on the fulcrum when the surface portion 3 is bent on the bending line 6, from the perspective of facilitating the cutting movement of the surface portion 2 on the third incision 8A when the surface portion 3 is bent.

[0163] The curved portion 81 including the connecting curved portion 81c is configured as a curved portion, in which the movement trajectories of the surface portion 2 when being cut by the third cut 8A into the lower portion 21 and the upper portion 22 do not overlap each other when the surface portion 3 is bent on the bending line 6. Fig. 9 As shown in (B), in particular, the connecting curved portion 81c is formed as the curved portion of the arc so that the movement trajectories do not overlap with each other.

[0164] The second cutout 7A and the third cutout 8A are formed by, for example, a punching method using a die, a processing method using a cutter or other tool, a laser processing method, etc. The method for forming the second cutout 7A or the third cutout 8A is not particularly limited.

[0165] (Deformation of corner protector 1B)

[0166] The corner protector 1B can be formed by, for example, bending the surface portion 3 at a substantially right angle on the bending line 6. Fig.10 A corner protector 1Bb according to a first modified embodiment is shown.

[0167] The corner protector 1Bb of the first modified embodiment is obtained when the surface portion 3 is bent outward at a substantially right angle on the bending line 6 and then stopped.

[0168] In the first modified corner protector 1Bb, the surface portion 3 is deformed into a shape divided into a lower portion 31 and an upper portion 32 that are bent at a substantially right angle and connected to the bending line 6. Strictly speaking, the surface portion at this time is bent at the outer bending line portion 6a and the inner bending line portion 6b of the bending line 6.

[0169] Furthermore, in the corner protector 1Bb of the first modified form, the surface portion 2 is deformed into a shape divided into a lower portion 21 and an upper portion 22 which are cut by the second cutout 7A and exist at substantially right angles.

[0170] However, in the corner protecting material 1Bb of the first deformation mode, Fig.10 As shown, in the portion where the surface portion 3 is bent on the bending line 6, a protrusion 75 and a depression 76 of similar shape formed by the second cutout 7A appear.

[0171] The protruding portion 75 is a portion that protrudes from the lower portion 31 of the surface portion 3 so as to continue beyond the bending line 6 .

[0172] The protrusion 75 in the second embodiment is formed by Figure 8 The plate-like portion is formed by the appearance shape corresponding to the rising line portions 71a, 71b and the connecting line portion 72 of the second cutout 7A shown. Specifically, the protrusion 75 is formed by the appearance shape in which about two-thirds of its upper side is circular and about one-third of its lower side is contracted inward.

[0173] The recessed portion 76 is a recessed portion formed by a space remaining after the protruding portion 75 is hollowed out with the bending line 6 as a boundary in the upper portion 32 of the surface portion 3 .

[0174] The recessed portion 76 in the second embodiment is formed in a manner similar to Figure 8 The second cutout 7A shown has a hollowed-out portion corresponding to the appearance shape of the rising lines 71a, 71b and the connecting line 72. In other words, the recessed portion 76 is a recessed portion of the upper portion 32 of the surface portion 3 that is similar to the protruding portion 75 and remains due to the disappearance of the protruding portion 75.

[0175] Furthermore, in the corner protection material 1Bb of the first deformation mode, as Fig.10 As shown, at the ends of the lower portion 21 and the upper portion 22 of the surface portion 2 cut by the third cut 8A, opposite curved end portions 85 and 86 formed by the third cut 8A appear.

[0176] In the corner protector 1Bb, a curved line end 85 appears at the cut end of the lower portion 21 of the surface portion 2 , and a curved line end 86 appears at the cut end of the upper portion 22 of the surface portion 2 .

[0177] The curved end portions 85 and 86 appearing on the surface portion 2 are also both formed of an end portion having a shape having a curved portion corresponding to the linear shape of the third cutout 8A.

[0178] The curved end portions 85 and 86 in the second embodiment are shown as Fig. 9 The end portion of the line composed of the curved portion 81 and the straight portion 82 of the third cut 8A shown in (A) is shown.

[0179] Specifically, one of the curved end portions 85 is used as a Fig. 9The curve portion 81 shown in (A) is obtained by the end portions corresponding to the shape of the large curve portion 81a, the small curve portion 81b and the connecting curve portion 81c combined with the inclined portion 82a and the horizontal portion 82b of the straight portion 82.

[0180] The other curved end portion 86 is obtained as an end portion corresponding to the above-mentioned combined shape similar to the curved end portion 85. The curved end portion 86 is obtained as an end portion of the opposite shape remaining when the curved end portion 85 is removed from the surface portion 2.

[0181] In the corner protector 1Bb, when the surface portion 3 is bent on the bending line 6 and the surface portion 2 is cut into the lower portion 21 and the upper portion 22 with the third cut 8A as a boundary, the cutting operation can be easily performed.

[0182] That is, in the corner protection material 1Bb, when the surface portion 2 is cut into the lower portion 21 and the upper portion 22, the moving track of a part of the curved portion 81 of the third cut 8A (connecting the curved portion 81c) does not overlap and contact. In addition, when the surface portion 2 is cut into the lower portion 21 and the upper portion 22, there is no need to perform unnecessary processing or preprocessing in advance, for example, first offsetting the protruding portion in the curved end portion 85 to set it to a state of being cut from the upper portion 32 of the surface portion 3.

[0183] Furthermore, if the corner protector 1B is set to a state where the surface portion 3 is folded back on the folding line 6, for example, it can be set to Fig.11 A corner protector 1Bc according to a second modified embodiment shown in (A).

[0184] The corner protector 1Bc of the second modified embodiment is obtained by bending the surface portion 3 at an angle of approximately 180 degrees on the bending line 6. The surface portion 3 is configured not to be broken at the outer bending line portion 6a and the inner bending line portion 6b of the bending line 6.

[0185] In the corner protector 1Bc of the second modified embodiment, the surface portion 3 is deformed into a shape in which the lower portion 31 and the upper portion 32 overlap back to back via the folding line 6 .

[0186] Furthermore, in the corner protector 1Bc of the second modified embodiment, the surface portion 2 is deformed into a shape in which the lower portion 21 and the upper portion 22 are adjacent to each other with the bent portion 4 interposed therebetween.

[0187] And, if Fig.12 As shown, the corner protector 1Bc of the second deformation mode becomes as follows: a protrusion 75 appears at the bent end of the lower portion 31 of the folded-back state of the surface portion 3, and on the other hand, a recessed portion 76 with a shape similar to the protrusion 75 appears at the bent end of the upper portion 32 in the folded-back state.

[0188] At this time, the protruding portion 75 and the recessed portion 76 are formed by the second cutout 7A having the curved portion 81 having three line portions extending so as to intersect the direction E parallel to the curved portion 4 at different angles as described above.

[0189] Therefore, the protruding portion 75 and the recessed portion 76 formed by the second cutout 7A also have outer shape portions that intersect the direction E parallel to the bent portion 4 at different angles.

[0190] At this time, the back side or rear of the recessed portion 76 is blocked by the presence of the lower portion 31 formed by the folded-back surface portion 3 .

[0191] Furthermore, in the corner protection material 1Bc of the second deformation mode, Fig.12 As shown, a curved line end 85 appears at the cut end of the cut lower portion 21 of the surface portion 2, while a curved line end 86 appears at the cut end of the cut upper portion 22.

[0192] At this time, if Fig.12 As shown in FIG. 1 , the curved end portion 85 is an end portion having a circular convex portion 85j protruding obliquely upward. The convex portion 85j is formed by Fig. 9 The large curved portion 81a in the third cutout 8A shown in (A), a portion of the inclined portion 82a continuous therewith, and a portion formed by connecting the curved portion 81c.

[0193] In addition, the curved end portion 86 at this time becomes an end portion having a circular concave portion 86k that is concave obliquely downward. The concave portion 86k is mainly composed of Fig. 9 The small curved portion 81b, the connecting curved portion 81c continuous therewith, and the portion where the horizontal portion 82b is formed in the third cutout 8A shown in (A).

[0194] Furthermore, when viewed from above, the corner protector 1Bc of the second deformation mode also has a Fig.11 The morphology of the T-shaped portion shown in (B).

[0195] That is, the corner protector 1Bc also has a T-shape when viewed from above, where the surface portion 3 in which the lower portion 31 and the upper portion 32 overlap and the surface portion 2 in which the lower portion 21 and the upper portion 22 are adjacent intersect at a substantially right angle.

[0196] (Example of using the corner protector 1B)

[0197] When the corner protector 1B is used alone, it can be similar to the corner protector 1A according to the first embodiment (see Figure 4 ) is used similarly.

[0198] That is, the corner protection material 1B can be directly in the undeformed state (refer to Figure 6 ) can also be used as the corner protection material 1Bc of the second deformation mode mentioned above (reference Fig.11 ) and use.

[0199] In this case, the undeformed corner protector 1B is used while being pressed against a desired corner of the object 100. The second modified corner protector 1Bc is used while being pressed against at least a portion of the corners of the cargoes 101 adjacent to each other vertically and horizontally on the inner side of the side of the object 100.

[0200] Then, when the corner protector 1B is used in an undeformed state, similarly to the corner protector 1A according to the first embodiment, it is possible to suppress the occurrence of cargo collapse at the four corners 100a, 100b, 100c, and 100d as an example of the corners of the loaded object 100.

[0201] When the corner protector 1Bc of the second modification is used, similarly to the corner protector 1Ac of the second modification according to the first embodiment, it is possible to suppress the occurrence of cargo collapse at an inner position such as the center of the loaded object 100 .

[0202] The corner protector 1Bb of the first modified embodiment can also be used in the same manner as the corner protector 1Ab of the first modified embodiment according to the first embodiment (see FIG. 1 ). Figure 5 ).

[0203] In this case, the corner protector 1Bb is used in a state of being pressed against at least a part of the corners of the cargoes 101 adjacent to each other vertically and horizontally on the inner side of the side surface of the loaded object 100 .

[0204] (Example of use of connecting corner protectors 1B to each other)

[0205] In addition, if Fig.13 As shown, the corner protector 1Bc according to the second modified embodiment can be used in a state where two corner protectors 1B are connected, for example.

[0206] The connection state at this time is close to a temporary fixed state. Moreover, the connection state can also be said to be a joined state. This is also the same in the following embodiments or modified examples.

[0207] Fig.13 2 shows a case where the upper corner protector 1Bc (K) arranged at the upper side is connected to the lower corner protector 1Bc (J) arranged at the lower side.

[0208] In this case, the link is Fig.13As shown in (B), the protrusion 75A in the lower corner protection material 1Bc (J) is embedded in the recessed portion 76B in the upper corner protection material 1Bc (K). And, in the connection in this case, the protrusion 75B in the upper corner protection material 1Bc (K) is embedded in the recessed portion 76A in the lower corner protection material 1Bc (J).

[0209] The corner protectors 1Bc(J) and 1Bc(K) are connected to each other by the two engagements between the protrusions 75A and 75B and the recesses 76B and 76A.

[0210] At this time, since the protrusions 75A and 75B embedded in the recesses 76B and 76A are blocked on the back or rear side of the recesses 76B and 76A due to the upper portion 32 of the folded-back surface portion 3 as described above, the embedded state is maintained stable.

[0211] And, in the connection in this case, if Fig.13 As shown in (B), the curved end 86B in the upper corner protector 1Bc (K) is fitted into the curved end 85A in the lower corner protector 1Bc (J). Also, the curved end 85B in the upper corner protector 1Bc (K) is fitted into the curved end 86A in the lower corner protector 1Bc (J).

[0212] The corner protectors 1Bc(J) and 1Bc(K) are also connected to each other by the fitting of the curved end portions 85A and 86A and the curved end portions 86B and 85B.

[0213] In addition, the connection operation of the two corner protectors 1Bc(J) and 1Bc(K) in this case is actually performed as follows.

[0214] That is, Fig.14 As shown in (A), the connection work in this case is performed by moving the curved end 86B and the curved end 85B in the upper corner protector 1Bc (K) so as to slide into and fit into the curved end 85A and the curved end 86A in the lower corner protector 1Bc (J).

[0215] exist Fig.14 In the example shown, the upper corner protector 1Bc (K) is moved so as to be joined with the lower corner protector 1Bc (J) in an obliquely downward direction as indicated by the arrow S.

[0216] As a result, in the lower corner protector 1Bc (J) and the upper corner protector 1Bc (K), Fig.14 As shown in (B), the curved end portion 86B and the curved end portion 85B of the corner protector 1Bc (K) are respectively fitted into the curved end portion 85A and the curved end portion 86A of the corner protector 1Bc (J).

[0217] To explain in detail, the curved end portion 85A is formed such that the convex portion 85j is fitted into the concave portion 86k of the curved end portion 86B (see Fig.12 ) is engaged with the curved end portion 86B. The curved end portion 86A is configured such that the convex portion 85j of the curved end portion 85B is engaged with the concave portion 86k thereof (see Fig.12 ) state and fits with the curved end portion 85B.

[0218] And, in the connection in this case, through the above connection operation, such as Fig.14 As shown in (B), the protrusion 75A in the lower corner protector 1Bc (J) is embedded in the recessed portion 76B in the upper corner protector 1Bc (K). And, substantially at the same time, the protrusion 75B in the upper corner protector 1Bc (K) is embedded in the recessed portion 76A in the lower corner protector 1Bc (J).

[0219] Here, the protruding portions 75A and 75B and the recessed portions 76A and 76B have outer shape portions that intersect the direction E parallel to the curved portion 4 at different angles as described above.

[0220] Therefore, if the protrusions 75A, 75B and the recessed portions 76A, 76B are embedded in each other, even if they are subjected to a tensile external force in a direction E parallel to the surfaces of the protrusions 75A, 75B and at least parallel to the curved portion 4, there will be portions on the protrusions 75A, 75B and the recessed portions 76A, 76B that collide with each other.

[0221] As a result, the protrusions 75A, 75B and the recessed portions 76A, 76B become connection units that are difficult to be pulled out or fall off at least in the direction E parallel to the curved portion 4. In addition, if an external force is parallel to the surface of the protrusions 75A, 75B, etc., the protrusions 75A, 75B and the recessed portions 76A, 76B are also connection units that are difficult to be pulled out in all directions except the direction E parallel to the curved portion 4.

[0222] Therefore, the lower corner protector 1Bc (J) and the upper corner protector 1Bc (K) in the connected state are connected by the engagement of the protrusions 75A, 75B and the recesses 76A, 76B as the above-mentioned connecting means, and thus are maintained in a state that is difficult to be disconnected.

[0223] Furthermore, the lower corner guard material 1Bc (J) and the upper corner guard material 1Bc (K) in the connected state are also connected by the engagement of the curved end portions 85A, 86A with the curved end portions 86B, 85B, so that even when subjected to an external tensile force in the direction E parallel to the curved portion 4, the connection is maintained in a state that is more difficult to be released.

[0224] In contrast, in the Fig.33 In the case of the second cutout 700A such as the comparative corner protector 110B illustrated on the left side of (A), the following results are obtained.

[0225] The second cut 700A is a cut formed of a tapered folded line and has two line portions 701 and 702. The second cut 700A has the line portions 701 and 702 which intersect the direction E parallel to the curved portion 4 at different angles.

[0226] Then, if the corner protector 110B of the comparative object is folded back on the bending line 6, it becomes Fig.33 A corner protector 110Bc according to a second modified embodiment is shown on the right side of (A).

[0227] In the corner protector 110Bc of the second modified embodiment, a protruding portion 750A and a recessed portion 760A formed by the second cutout 700A appear.

[0228] However, when used as a connecting unit, the protruding portion 750A and the recessed portion 760A become connecting units that are easily pulled out at least in the direction E parallel to the curved portion 4 .

[0229] Furthermore, in adopting Fig.33 In the case of the second cutout 700B such as the comparative corner protector 120B illustrated on the left side of (B), the following results are obtained.

[0230] The second cut 700B at this time is a cut formed of a line shape of a fold line bent twice at right angles, and has three line portions 711, 712, and 713. In addition, the second cut 700B has a line portion 713 as a line portion that intersects the direction E parallel to the curved portion 4 at different angles. The line portions 711 and 712 are line portions extending parallel to the direction E parallel to the curved portion 4.

[0231] If the corner protector 120B of the comparative object is folded back on the bending line 6, it becomes Fig.33 A corner protector 120Bc according to a second modified embodiment is shown on the right side of (B).

[0232] In the corner protecting material 120Bc of the second modified form, there is a Fig.33 The protrusion 750B and the recess 760B are formed by the second cutout 700B shown on the right side of (B). When used as a connecting unit, the protrusion 750B and the recess 760B become connecting units that are easily pulled out at least in the direction E parallel to the curved portion 4.

[0233] Implementation method 3.

[0234] Fig.15 and Fig.16 It is a perspective view and four-sided views of a corner protector 1C according to Embodiment 3 of the present invention.

[0235] When compared with the corner protector 1B according to the second embodiment, the corner protector 1C according to the third embodiment is different in that the third notch 8A is changed to another third notch 8B, but other than that, they have substantially the same structure.

[0236] like Fig.17 As shown, the third cutout 8B in the third embodiment is configured as a cutout composed of a line formed by combining a curved portion 81 and a straight portion 82 .

[0237] like Fig.17 As shown, the straight portion 82 has a first horizontal portion 82c and a second horizontal portion 82d.

[0238] The first horizontal portion 82 c is a straight line portion extending horizontally inward in the left-right direction from the side edge 3 a which is also a long side of the surface portion 3 to one end of the curved portion 81 .

[0239] The second horizontal portion 82 d is a straight line portion extending horizontally from the curved portion 4 toward the outside in the left-right direction to the other end of the curved portion 81 .

[0240] like Fig.17 As shown, the curved portion 81 includes a first curved portion 81d, a second curved portion 81e, and a third curved portion 81f.

[0241] The first curved portion 81 d is an arc-shaped curved portion that rises from the distal end of the first horizontal portion 82 c of the straight portion 82 and extends in a curved manner so as to approach the curved portion 4 .

[0242] The second curved portion 81 e is an arc-shaped curved portion that rises from the distal end of the second horizontal portion 82 d of the straight portion 82 and extends in a curved manner so as to approach the curved portion 4 .

[0243] The third curved portion 81f is an arc-shaped curved portion extending in a curved manner so as to be connected to the upper end of the first curved portion 81d and the upper end of the second curved portion 81e.

[0244] Furthermore, the second curved portion 81e is a curved portion composed of an arc centered on a fulcrum when the surface portion 3 is bent on the bending line 6, from the perspective of facilitating the cutting movement of the surface portion 2 on the third incision 8B when the surface portion 3 is bent.

[0245] (Deformation of corner protector 1C)

[0246] The corner protector 1C can be formed by, for example, bending the surface portion 3 at a substantially right angle on the bending line 6. Fig.18 A corner protector 1Cb according to a first modified embodiment is shown.

[0247] As in the case of the corner protector 1Bb according to the second embodiment, Fig.18 As shown, in the corner protector 1Cb of the first modified embodiment, a protrusion 75 and a depression 76 of similar shape formed by the second cutout 7A appear at the portion where the surface portion 3 is bent on the bending line 6 .

[0248] Furthermore, in the corner protection material 1Cb of the first deformation mode, as Fig.18 As shown, at the ends of the lower portion 21 and the upper portion 22 of the surface portion 2 cut by the third cut 8B, opposite curved end portions 85C and 86C formed by the third cut 8B appear.

[0249] Here, a curved line end 85C appears at the cut end of the lower portion 21 of the surface portion 2 , and a curved line end 86C appears at the cut end of the upper portion 22 of the surface portion 2 .

[0250] The curved end portions 85C and 86C appearing on the surface portion 2 are both end portions having a shape having a curved portion corresponding to the linear shape of the third cutout 8B.

[0251] The curved end portions 85C and 86C in the third embodiment are formed by Fig.18 It appears at the end of a linear composition composed of a combination of the curved portion 81 and the straight portion 82 shown in (B).

[0252] Specifically, one of the curved end portions 85C is used as a Fig.17 The illustrated curved portion 81 is obtained by forming an end portion corresponding to a shape formed by combining the first curved portion 81d, the second curved portion 81e, and the third curved portion 81f with the first horizontal portion 82c and the second horizontal portion 82d of the straight portion 82.

[0253] The other curved end portion 86C is obtained as an end portion corresponding to the above-mentioned combined shape similar to the curved end portion 85C. The curved end portion 86C is obtained as an end portion of the opposite shape remaining when the curved end portion 85C is removed from the surface portion 2.

[0254] In the corner protector 1Cb, when the surface portion 3 is bent on the bending line 6 and the surface portion 2 is cut into the lower portion 21 and the upper portion 22 with the third cut 8B as a boundary, the cutting operation can be easily performed.

[0255] That is, in the corner protection material 1Cb, when the surface portion 2 is cut into the lower portion 21 and the upper portion 22, the movement trajectory of a part of the curved portion 81 of the third cut 8B (especially, the third curved portion 81f) does not overlap and contact. In addition, when the surface portion 2 is cut into the lower portion 21 and the upper portion 22, there is no need to perform unnecessary processing or preprocessing in advance, for example, first offsetting the protruding portion in the curved end portion 85C to set it to a state of being cut from the upper portion 32 of the surface portion 3.

[0256] Furthermore, if the corner protector 1C is set to a state where the surface portion 3 is folded back on the folding line 6, for example, it can be set to Fig.19 A corner protector 1Cc according to a second modified embodiment is shown.

[0257] As in the case of the corner protector 1Bc according to the second embodiment, Fig.19 As shown, the corner protector 1Cc of the second modified embodiment is in a state where a protrusion 75 and a depression 76 of similar shapes are separately formed at the end portions of the folded lower portion 31 and the upper portion 32 of the surface portion 3 .

[0258] And, if Fig.19 As shown, the corner protector 1Cc of the second modified form is in a state where a curved end 85C appears at the cut end of the cut lower portion 21 of the surface portion 2, and a curved end 86C appears at the cut end of the cut upper portion 22.

[0259] like Fig.19 As shown, at this time, the curved end portion 85C becomes an end portion having a circular convex portion extending in a manner protruding obliquely upward toward the side close to the curved portion 4. The convex portion is mainly formed by the third curved portion 81f ( Fig.17 ) forming part.

[0260] In this case, the curved end portion 86C has a circular concave portion extending obliquely downward toward the side close to the curved portion 4. The concave portion is mainly formed by the third curved portion 81f ( Fig.17 ) forming part.

[0261] Moreover, similarly to the case of the corner protector 1Bc according to the second embodiment, the corner protector 1Cc according to the second modified embodiment also has a T-shaped portion when viewed from above.

[0262] That is, the corner protector 1Cc also has a T-shaped shape when viewed from above, where the surface portion 3 in which the lower portion 31 and the upper portion 32 overlap and the surface portion 2 in which the lower portion 21 and the upper portion 22 are adjacent intersect at a substantially right angle.

[0263] (Example of using the corner protector 1C)

[0264] When the corner protector 1C is used alone, it can be similar to the corner protector 1A according to the first embodiment (see Figure 4 ) is used similarly.

[0265] That is, the corner protection material 1C can be directly in the undeformed state (refer to Fig.15 ) can also be used as the corner protection material 1Cc of the second deformation mode mentioned above (reference Fig.19 ) and use.

[0266] When the corner protector 1C is used in this manner, the same operational effects as those obtained when the corner protector 1B according to the second embodiment is used can be obtained.

[0267] In addition, regarding Fig.18 The corner protector 1Cb of the first modified embodiment shown in the figure can also be used in substantially the same manner as the corner protector 1Ab of the first modified embodiment according to the first embodiment (see FIG. 1 ). Figure 5 ).

[0268] In this case, the corner protector 1Cb is used in a state of being pressed against at least a part of the corners of the cargoes 101 adjacent to each other vertically and horizontally on the inner side of the side surface of the loaded object 100 .

[0269] In addition, if Fig. 20 As shown, the corner protector 1Cc according to the second modified embodiment can be used in a state where two corner protectors 1C are connected (or joined), for example.

[0270] Fig. 20 2 shows a case where an upper corner protector 1Cc (K) arranged at the upper side is connected to a lower corner protector 1Cc (J) arranged at the lower side.

[0271] In this case, the link is Fig. 20 As shown, the protrusion 75A in the lower corner protector 1Cc (J) is embedded in the recessed portion 76B in the upper corner protector 1Cc (K). In this case, the protrusion 75B in the upper corner protector 1Cc (K) is embedded in the recessed portion 76A in the lower corner protector 1Cc (J).

[0272] The corner protectors 1Cc(J) and 1Cc(K) are connected to each other by the two fittings between the protrusions 75A and 75B and the recesses 76B and 76A.

[0273] And, in the connection in this case, if Fig. 20 or Fig.21As shown, the convex portion of the curved end portion 85Ca in the lower corner protection material 1Cc (J) is fitted into the concave portion of the curved end portion 86Cb in the upper corner protection material 1Cc (K). Also, the convex portion of the curved end portion 85Cb in the upper corner protection material 1Cc (K) is fitted into the concave portion of the curved end portion 86Ca in the lower corner protection material 1Cc (J).

[0274] The corner protectors 1Cc(J) and 1Cc(K) are also connected to each other by the fitting of the curved end portions 85Ca and 86Ca and the curved end portions 86Cb and 85Cb.

[0275] Here, the protrusions 75A, 75B and the recessed portions 76A, 76B are connection units that are not easily pulled out or easily dislodged at least in the direction E parallel to the curved portion 4 as described above. In addition, if an external force is parallel to the surface of the protrusions 75A, 75B, etc., the protrusions 75A, 75B and the recessed portions 76A, 76B are also connection units that are not easily pulled out in all directions except the direction E parallel to the curved portion 4.

[0276] Therefore, the lower corner protector 1Cc(J) and the upper corner protector 1Cc(K) in the connected state are connected by the engagement of the protrusions 75A, 75B and the recesses 76A, 76B as the above-mentioned connecting means, and thus are maintained in a state that is difficult to be disconnected.

[0277] Furthermore, the curved end portions 85Ca and 85Cb and the curved end portions 86Ca and 86Cb are curved end portions having outer shape portions that intersect the direction E parallel to the curved portion 4 at different angles.

[0278] Therefore, if the curved end portions 85Ca, 85Cb and the curved end portions 86Ca, 86Cb are embedded in each other, even if they are subjected to a tensile external force in a direction E parallel to the surface of the curved end portions 85Ca, 85Cb and the like and at least parallel to the curved portion 4, there will be portions on the curved end portions 85Ca, 85Cb and the curved end portions 86Ca, 86Cb that collide with each other.

[0279] As a result, the curved end portions 85Ca, 85Cb and the curved end portions 86Ca, 86Cb also become connection units that are not easily pulled out or easily dislodged at least in the direction E parallel to the curved portion 4. In addition, the curved end portions 85Ca, 85Cb and the curved end portions 86Ca, 86Cb may be connection units that are not easily pulled out in all directions except the direction E parallel to the curved portion 4 if an external force is parallel to the surface of the curved end portions 85Ca, 85Cb, etc.

[0280] Thus, the lower corner protector 1Cc (J) and the upper corner protector 1Cc (K) in the connected state are also connected by fitting or embedding the curved end portions 85Ca, 85Cb and the curved end portions 86Ca, 86Cb as the above-mentioned connecting units, so that they are maintained in a state that is more difficult to release.

[0281] Implementation method 4.

[0282] Fig. 22 and Fig.23 It is a perspective view and four-sided views of a corner protector 1D according to Embodiment 4 of the present invention.

[0283] The corner protector 1D according to the fourth embodiment is different from the corner protector 1C according to the third embodiment (see Fig.15 ) are compared, the difference is in that a third incision 8C is adopted which is slightly different from the second incision 7B, but other than that, the structure is roughly the same.

[0284] like Fig.24 As shown, the second cut 7B in the fourth embodiment is configured as a cut consisting of a fold line 73 that crosses the surface portion 3 and is interrupted by leaving only the fold line 6 d that bites into the surface portion 2 .

[0285] Furthermore, the fold line 73 of the second cutout 7B is composed of three line portions: a descending oblique line portion 73 a , a rising line portion 73 b , and a horizontal line portion 73 c .

[0286] The descending oblique line portion 73 a of the fold line 73 is a descending oblique line that descends inward from the side 3 a that is a long side of the surface portion 3 and is a straight line portion that extends to a position just in front of the curved portion 4 .

[0287] The rising line portion 73b of the fold line 73 is a straight line portion extending from the end (lower end) of the descending oblique line portion 73a in the vertical direction parallel to the curved portion 4. The rising line portion 73b extends to the same height position as the starting end (upper end) of the descending oblique line portion 73a.

[0288] The horizontal line portion 73 c of the fold line 73 is a straight line portion extending from the upper end of the rising line portion 73 b to the curved portion 4 in the horizontal left-right direction.

[0289] The fold line 6 d is formed so as to bite into a part of the surface portion 2 from the distal end of the horizontal line portion 73 c of the fold line 73 .

[0290] The third cutout 8C in the fourth embodiment is obtained by making the third cutout 8B in the third embodiment (reference Fig.17 ) is a linear incision formed by flipping the first horizontal portion 82c and the second horizontal portion 82d upside down.

[0291] Therefore, similar to the third incision 8B in the third embodiment, the third incision 8C becomes a linear incision composed of a curve portion 81 having a first curve portion 81d, a second curve portion 81e and a third curve portion 81f and a straight line portion 82 having a first horizontal portion 82c and a second horizontal portion 82d.

[0292] (Deformation of corner protector 1D)

[0293] If the corner protector 1D is in a state where the surface portion 3 is folded back on the folding line 6d, it can be made Fig.25 A corner protector 1Dc according to a second modified embodiment is shown.

[0294] like Fig.24 (B) or Fig.25 As shown, in the corner protector 1Dc of the second modification, a protrusion 75D and a depression 76D of similar shape formed by the second cutout 7B appear at the ends of the lower portion 31 and the upper portion 32 where the surface portion 3 is bent on the bending line 6d.

[0295] In this case, the recessed portion 76D appears at the bent end portion of the lower portion 31 , and the protruding portion 75D appears at the bent end portion of the upper portion 32 .

[0296] The protruding portion 75D is a portion having a shape that protrudes obliquely upward at an acute angle corresponding to the folding line 73 of the second cutout 7B.

[0297] The recessed portion 76D is a recessed portion having a shape corresponding to the protruding portion 75D. Specifically, the recessed portion 76D is a portion having a shape that protrudes downward at an acute angle and is recessed corresponding to the fold line 73 of the second cutout 7B. The recessed portion 76D exists in a manner that covers the upper portion 32 of the surface portion 3 formed by the protruding portion 75D on its back side or rear.

[0298] Furthermore, in the corner protection material 1Dc of the second deformation mode, as Fig.25 As shown, at the ends of the lower portion 21 and the upper portion 22 of the surface portion 2 cut by the third cut 8C, opposite curved end portions 85D and 86D formed by the third cut 8C appear.

[0299] In this corner protector 1Dc, a curved end portion 86D appears at the cut end portion of the lower portion 21 of the surface portion 2 , and a curved end portion 85D appears at the cut end portion of the upper portion 22 of the surface portion 2 .

[0300] The curved end portions 85D and 86D are both end portions having a shape having a curved portion corresponding to the linear shape of the third cutout 8C.

[0301] And, the curve end 85D is used as Fig.17The first curved portion 81d, the second curved portion 81e and the third curved portion 81f of the curved portion 81 shown in the figure are obtained by the end portion corresponding to the protruding shape formed by combining the first horizontal portion 82c and the second horizontal portion 82d of the straight portion 82.

[0302] The other curved end portion 86D is obtained as an end portion corresponding to the above-mentioned combined shape similar to the curved end portion 85D. The curved end portion 86D is obtained as an end portion of the opposite shape remaining when the curved end portion 85D is removed from the surface portion 2.

[0303] Furthermore, if the corner protector 1D is set to a state where the surface portion 3 is bent at a substantially right angle on the bending line 6d and stops, it is similar to the case of the corner protector 1Cb of the first modified form of the corner protector 1C involved in the third embodiment (refer to Fig.18 ) is roughly the same as the first deformation mode of the corner protection material.

[0304] (Example of using the corner protector 1D)

[0305] When the corner protector 1D is used alone, it can be similar to the corner protector 1A according to the first embodiment (see Figure 4 ) is used similarly.

[0306] That is, the corner protection material 1D can be directly in the undeformed state (refer to Fig. 22 ) can also be used as the corner protection material 1Dc of the second deformation mode mentioned above (reference Fig.25 ) and use.

[0307] When the corner protector 1D is used in this way, the same operational effects as those obtained when the corner protector 1B according to the second embodiment is used can be obtained.

[0308] Furthermore, in the corner protector 1D, the corner protector of the first modified form can also be used in substantially the same manner as the corner protector 1Ab of the first modified form according to the first embodiment (see FIG. 1 ). Figure 5 ).

[0309] In addition, if Fig.26 As shown, the corner protector 1Dc according to the second modification can be used in a state where two corner protectors 1D are connected (or joined), for example.

[0310] exist Fig.26 2 shows a case where an upper corner protector 1Dc (K) disposed at an upper position is connected to a lower corner protector 1Dc (J) disposed at a lower position.

[0311] In this case, the link is Fig.26 or Fig. 27As shown, the protrusion 75Da in the lower corner protector 1Dc (J) is embedded in the recessed portion 76Db in the upper corner protector 1Dc (K). In this case, the protrusion 75Db in the upper corner protector 1Dc (K) is embedded in the recessed portion 76Da in the lower corner protector 1Dc (J).

[0312] These embeddings can be performed, for example, by moving the lower end of the upper corner protector 1Dc (K) so as to approach the upper end of the lower corner protector 1Dc (J).

[0313] The corner protectors 1Dc(J) and 1Dc(K) are connected to each other by the two engagements of the protrusions 75Da and 75Db and the recesses 76Da and 76Db.

[0314] And, in the connection in this case, if Fig.26 As shown, the convex portion of the curved end portion 85Da in the lower corner protection material 1Dc (J) is fitted into the concave portion of the curved end portion 86Db in the upper corner protection material 1Dc (K). Also, the convex portion of the curved end portion 85Db in the upper corner protection material 1Dc (K) is fitted into the concave portion of the curved end portion 86Da in the lower corner protection material 1Dc (J).

[0315] The corner protectors 1Dc(J) and 1Dc(K) are also connected to each other by the fitting of the curved end portions 85Da and 86Db and the curved end portions 86Da and 85Db.

[0316] Here, the curved line end portions 85Da and 86Db and the curved line end portions 86Da and 85Db are curved line end portions having outer shape portions intersecting the direction E parallel to the curved portion 4 at different angles.

[0317] Therefore, if the curved end portions 85Da, 86Db and the curved end portions 86Da, 85Db are embedded in each other, even if they are subjected to a tensile external force in a direction E parallel to the surface of the curved end portions 85Da, 86Db and at least parallel to the curved portion 4, there will be portions where the curved end portions 85Da, 86Db and the curved end portions 86Da, 85Db collide with each other.

[0318] As a result, the curved end portions 85Da, 86Db and the curved end portions 86Da, 85Db become connection units that are not easily pulled out or easily detached at least in the direction E parallel to the curved portion 4. In addition, if the external force is parallel to the surface of the curved end portions 85Da, 86Db, etc., the curved end portions 85Da, 86Db and the curved end portions 86Da, 85Db are also connection units that are not easily pulled out in all directions except the direction E parallel to the curved portion 4.

[0319] Thus, the lower corner protector 1Dc (J) and the upper corner protector 1Dc (K) in the connected state are connected by the fitting or embedding of the curved end portions 85Da, 86Db and the curved end portions 86Da, 85Db as the above-mentioned connecting means, and thus are maintained in a state that is difficult to be disconnected.

[0320] Variation example.

[0321] The present invention is not limited to the configurations exemplified in the above-mentioned embodiments 1 to 4, and various modifications, changes, and combinations are possible within the scope of the gist of each invention described in the claims. Therefore, the present invention also includes, for example, the following modifications.

[0322] (Variant 1)

[0323] The corner protection material 1 can also be used as the second cutout 7. Fig.28 The corner protector 1E has a second cut 7C formed by the fold line 74 illustrated on the left side of (A).

[0324] The fold line 74 of the second cutout 7C has a first oblique line portion 74a and a second oblique line portion 74b.

[0325] The first oblique line portion 74a is a straight line portion extending obliquely upward rightward from the end of the outer bending line portion 6a. The second oblique line portion 74b is a straight line portion extending obliquely upward rightward from the end (left end) of the first oblique line portion 74a and the inner bending line portion 6b.

[0326] The upper end of the first oblique line portion 74a is located at a position offset toward the direction (right direction) closer to the curved portion 4 than the end of the inner bending line portion 6b or the lower end of the second oblique line portion 74b. The upper end of the first oblique line portion 74a is also the upper end of the second oblique line portion 74b.

[0327] Therefore, the second cut 7C can also be said to be a cut composed of a line shape inclined to the right and protruding at an acute angle. In addition, the second cut 7C is a cut having a first oblique line portion 74a and a second oblique line portion 74b, which are two lines intersecting the direction E parallel to the curved portion 4 at different angles.

[0328] If the surface portion 3 of the corner protector 1E to which the second cutout 7C is applied is folded back on the folding line 6, the corner protector 1E becomes Fig.28 The right side of (A) shows a part of a corner protector 1Ec according to the second modified embodiment.

[0329] In the corner protection material 1Ec of the second modification, Fig.28 As shown on the right side of (A), a protrusion 75E and a recess 76E of similar shape formed by the second cutout 7C appear at the folded-back end of the surface portion 3.

[0330] In this case, the protrusion 75E and the recessed portion 76E are two portions whose line portions intersect at different angles with the direction E parallel to the curved portion 4. However, when the protrusion 75E and the recessed portion 76E are subjected to an external force parallel to the surface of the protrusion 75E and the like and along the direction E parallel to the curved portion 4, the portions of the fold line 74 corresponding to the first oblique line portion 74a and the second oblique line portion 74b become portions that are difficult to move.

[0331] Therefore, the corner protectors 1E that are connected by fitting the protrusions 75E and the recesses 76E are unlikely to be pulled out or fall off in the direction E parallel to the bent portion 4 .

[0332] (Variant 2)

[0333] Furthermore, the corner protection material 1 may also be used as the second cutout 7. Fig.28 The corner protector 1F has a second cutout 7D formed by the fold line 74 illustrated on the left side of (B).

[0334] The fold line 74 of the second cutout 7D includes a first oblique line portion 74c, a second oblique line portion 74d, and a horizontal line portion 74e.

[0335] The first oblique line portion 74c is a straight line portion extending from the end of the outer bending line portion 6a in an obliquely upward left direction. The second oblique line portion 74d is a straight line portion extending from the end (left end) of the inner bending line portion 6b in an obliquely upward right direction. The horizontal line portion 74e is a straight line portion extending substantially horizontally by connecting the upper end of the first oblique line portion 74c and the upper end of the second oblique line portion 74d.

[0336] The second cutout 7D is a cutout having two parts, namely, a first oblique line part 74 c and a second oblique line part 74 d , which are line parts intersecting the direction E parallel to the curved portion 4 at different angles.

[0337] If the surface portion 3 of the corner protector 1F to which the second cutout 7D is applied is bent back on the bending line 6, the corner protector 1F will be Fig.28 The right side of (B) shows a part of a corner protector 1Fc according to the second modified embodiment.

[0338] In the corner protection material 1Fc of the second deformation mode, Fig.28 As shown on the right side of (B), a protrusion 75F and a recess 76F of similar shape formed by the second cutout 7D appear at the folded-back end of the surface portion 3.

[0339] In this case, the protruding portion 75F and the recessed portion 76F are two portions whose line portions intersect at different angles with the direction E parallel to the curved portion 4. However, when the protruding portion 75F and the recessed portion 76F are subjected to an external force parallel to the surface of the protruding portion 75F and the direction E parallel to the curved portion 4, the portions of the fold line 74 corresponding to the first oblique line portion 74c and the second oblique line portion 74d become portions that are difficult to move.

[0340] In particular, the protrusion 75F and the recess 76F are oblique lines that are inclined to opposite sides across the parallel direction E of the first oblique line 74c and the second oblique line 74d. Therefore, when embedded, it is different from the case of the protrusion 75E and the recess 76E (see Fig.28 Compared with the right side of (B), it is also less likely to be pulled out or fall off in the direction E parallel to the bending portion 4.

[0341] As a result, the corner protectors 1F that are connected by fitting the protruding portion 75F and the recessed portion 76F are unlikely to be pulled out or fall off in the direction E parallel to the bent portion 4 .

[0342] (Variant 3)

[0343] In addition, the corner protection material 1 can also be used as a cutout 5 consisting of straight lines. Fig.29 The corner protector 1G of the cutout 5C is shown in FIG.

[0344] The cutout 5C may be a cutout formed by the same horizontal straight lines as the cutout 5 formed by the horizontal straight lines in another part of the surface portion 2 .

[0345] Furthermore, in the corner protector 1G in this case, a folding line 6C consisting of a straight line extending substantially horizontally from the distal end 5 b of the cutout 5C toward the side 3 a of the surface portion 3 is provided.

[0346] That is, the corner protector 1G corresponds to the corner protector 1A according to Embodiment 1, to which the cutouts 5C and the folding lines 6C are added. Therefore, the corner protector 1G has the same structure as the corner protector 1A except for the added parts.

[0347] The corner protector 1G is formed by bending the surface portion 3 inwardly at a substantially right angle on the bending line 6C. Fig.30 A corner protector 1Gc according to a third modified embodiment is shown.

[0348] In the corner protection material 1Gc of the third modification, Fig.30 As shown, by bending on the bending line 6C, the lower portion of the lower portion 31 of the surface portion 3 becomes a bent lower portion 33 bent at a substantially right angle.

[0349] Furthermore, in the corner protection material 1Gc of the third deformation mode, Fig.30 As shown, the lower portion of the lower portion 21 of the surface portion 2 is cut by the cutout 5C and bent at a right angle to form a partially overlapped bent lower portion 23 . Fig.30 The portion represented by dots is the overlapping portion.

[0350] In addition, when it is undesirable to generate the above-mentioned overlapping portion in the corner protector 1Gc of the third modified embodiment, the corner protector 1G may be provided with a plurality of slots instead of the linear cutouts 5C. Fig.29 The triangular notch portion 80 indicated by the two-dot chain line is a corner protector.

[0351] The notch portion 80 is formed by the cut-off lines 56 and 57 which are composed of two straight lines that intersect and contact the bent portion 4 at an angle of 45 degrees and intersect each other at 90 degrees.

[0352] A modified example of the corner protector 1G provided with the notch portion 80 is a corner protector 1Gc which is bent and deformed on the bending line 6C as follows. That is, in the corner protector 1Gc, when the surface portion 3 is bent on the bending line 6C, as shown in FIG. Fig.30 As illustrated by the two-dot chain line in the figure, the surface portion 2 is in a state where the ends of the two cutting lines 56 and 57 constituting the notch portion 80 only face each other, and no overlapping portions are generated.

[0353] Incidentally, the notch portion 80 may be configured such that the cutting lines 56 and 57 where the notch portion 80 is to be formed are previously formed as cutting lines such as perforations, instead of being initially provided. In this case, the cutout 5C is also formed in the corner protector 1G.

[0354] Then, in this case, when the corner protector 1G is formed as the corner protector 1Gc bent and deformed on the bending line 6C, if there is a situation where the overlapped portion formed by the cutout 5C is undesirable, the following can be used to deal with it.

[0355] That is, in the corner protector 1G in this case, the notch 80 is formed by cutting a part of the surface portion 2 along the cut lines 56 and 57 as the cuttable lines during its use. Thus, in the corner protector 1Gc in which the corner protector 1G in this case is deformed, the overlapping portion can be avoided.

[0356] Then, if Figure 5 As shown, similarly to the second modified corner protector 1Ac of the first embodiment, the third modified corner protector 1Gc is used in a state of being pressed against at least a portion of the corners of the cargoes 101 adjacent to each other vertically and horizontally on the inner side of the side surface of the load 100.

[0357] To further describe, the corner protector 1Gc at this time is set to a state where the lower portion 31 and the upper portion 32 of the surface portion 3 are inserted between adjacent goods 101 of the load 100. And the corner protector 1Gc at this time is set to a state where the lower portion 21 and the upper portion 22 of the surface portion 2, which have a positional relationship of intersecting at a substantially right angle, are pressed against a part of each side surface (surface) of the adjacent goods 101.

[0358] However, in the case of the corner protector 1Gc, the bent lower portion 33 of the lower portion 31 of the surface portion 3 bent at a substantially right angle can be inserted between the upper and lower cargoes 101. In addition, in the case of the corner protector 1Gc at this time, the bent lower portion 23 of the lower portion 21 of the surface portion 2 bent at a substantially right angle can be pressed against a part of the side surface of the cargo 101 on the bent lower portion 33.

[0359] When the corner protector 1Gc of the third modification is used, it is possible to more reliably suppress the occurrence of cargo collapse at an inner position such as the center of the loaded object 100, compared to the case where the corner protector 1Ac of the second modification in the first embodiment is used.

[0360] (Variant 4)

[0361] like Figure 8 As illustrated, the outer bending line portion 6 a of the bending line 6 as a part thereof may be formed as the fourth notch 9 .

[0362] When the outer bending line portion 6a is set as the fourth cutout 9, for example, when the corner protector 1B is bent on the bending line 6 (actually, the inner bending line portion 6b), the protrusion 75 and the recess 76 are easily cut and appear.

[0363] (Variant 5)

[0364] A plurality of the notches 5 , the bending lines 6 , the second notches 7 , the third notches 8 and the like may be provided in one corner protector.

[0365] (Variant 6)

[0366] When the corner protector 1B and the like having the second cutout 7 and the third cutout 8 of the present invention are connected as the corner protector 1Bc of the second modified form, as shown in FIG. Fig.31 As illustrated, a corner protector 1Bc (M) that is split on one side may be used as one of the corner protectors 1Bc.

[0367] The one-side cracked corner protection material 1Bc (M) is, for example, Fig.31 The corner protector is shown in a form in which the lower portion 21 of the surface portion 2 is cut away or is not used for connection.

[0368] like Fig.31 As shown in the example, the one-side split corner protector 1Bc (M) can approach from above to the corner protector 1Bc (J) arranged below and connect.

[0369] Regarding the connection at this time, first, the protrusion 75A in the lower corner protector 1Bc (J) is inserted into the recessed portion 76B in the upper one-side split corner protector 1Bc (M). And in the connection at this time, the protrusion 75B in the upper one-side split corner protector 1Bc (M) is inserted into the recessed portion 76A in the lower corner protector 1Bc (J).

[0370] In this connection, the curved end portion 86B of the upper one-side split corner protector 1Bc (M) is fitted into the curved end portion 85A of the lower corner protector 1Bc (J).

[0371] Thus, the one-side split corner protector 1Bc(M) and the corner protector 1Bc(J) are connected by the two fittings of the protrusions 75A, 75B and the recesses 76B, 76A, and the one fitting of the curved end 85A and the curved end 86B.

[0372] (Variant 7)

[0373] And, if Fig.32 The corner protector 1A is used as a representative example. The corner protector 1A of the present invention can be configured so that the surface material 10A as the base material is not pre-bent on the bending portion 4, but is set to a shape bent on the bending portion 4 when used.

[0374] In addition, the corner protector of the present invention is preferably made of a single surface material 10 made of paper, regardless of its structure. However, the corner protector of the present invention may be made of a surface material 10 made of other materials as long as it is a bendable surface material.

[0375] Examples of the paper surface material 10 include surface materials made of corrugated paper, cardboard, corrugated plastic (plastic corrugated cardboard), and the like.

[0376] (Note) (1)

[0378] A corner protection material, comprising:

[0379] Two surface portions, separated by a curved portion extending parallel to one side and having a rectangular shape;

[0380] a cutout extending from one side of at least one of the two surface portions to the curved portion; and

[0381] The bending line extends from the end of the cut to one side of the other surface portion. (2)

[0383] The corner protector according to (1), wherein

[0384] The bending line is interrupted and a second cut is provided on the other surface portion. (3)

[0386] The corner protector according to (2), wherein

[0387] The second incision is an incision consisting of continuous fold lines. (4)

[0389] The corner protector according to (2), wherein

[0390] The second incision is a incision having three or more line portions, and the line portions extend so as to intersect a direction parallel to the bent portion at different angles. (5)

[0392] The corner protector according to (4), wherein

[0393] The second incision is an incision having a curved portion. (6)

[0395] The corner protector according to (2), wherein

[0396] When the other surface portion is bent on the bending line, a protrusion and a depression of similar shape formed by the second cut appear on the folded portion of the other surface portion across the bending line. (7)

[0398] The corner protector according to (6), wherein

[0399] When two of the corner protectors are used, the two corner protectors are connected to each other by embedding the protrusion in one corner protector into the recessed portion in the other corner protector and, on the other hand, embedding the protrusion in the other corner protector into the recessed portion in the one corner protector. (8)

[0401] The corner protector according to any one of (1) to (7), wherein

[0402] The incision is configured as a third incision having a curved portion. (9)

[0404] The corner protector according to (8), wherein

[0405] The curved portion is a portion composed of curved lines whose movement trajectories do not overlap when the other surface portion is bent on the bending line. (10)

[0407] The corner protector according to (8), wherein

[0408] When the other surface portion is bent on the bending line, the end portion of the one surface portion cut by the third incision appears as an opposite curved end portion formed by the third incision. (11)

[0410] The corner protector according to (10), wherein

[0411] When two corner protectors are used, the two corner protectors are connected to each other by combining and fitting the curved end portion of one corner protector with the curved end portion of the other corner protector. (12)

[0413] The corner protector according to any one of (2) to (11), wherein

[0414] A portion of the bending line from one side of the other surface portion to the second cutout is formed as a fourth cutout. (13)

[0416] The corner protector according to any one of (1) to (12),

[0417] It consists of a bendable sheet of surface material. (14)

[0419] The corner protector according to (13), wherein

[0420] The surface material is a paper material.

[0421] According to the corner protector according to (1), the surface portion that comes into contact with the corner portion of the loaded object can be deformed for use.

[0422] According to the corner protector of (2), when the other surface portion is folded back on the folding line, a protrusion and a depression of a similar shape formed by the second cut can appear in the folded back portion.

[0423] According to the corner protector according to (3), it is possible to form a protrusion and a recess having a similar shape to an angular corner.

[0424] According to the corner protector material involved in (4), compared with the case where the second incision is a incision having two or less line portions that intersect at different angles with a direction parallel to the bending portion, when a protrusion and a recessed portion of similar shape are used as a connecting unit for two corner protectors, the protrusion and the recessed portion can be provided as a connecting unit that is not easily pulled out in a direction parallel to the bending portion.

[0425] According to the corner protector involved in (5), compared with the case where the second cut is composed of a continuous fold line, the protrusion and recess of similar shape formed by the second cut can be set as protrusions and recesses that are easily fitted when used as a connecting unit of two corner protectors.

[0426] According to the corner protector according to (6), the protrusion and the recess having similar shapes formed by the second cutout can be used as a connecting means for two corner protectors.

[0427] According to the corner protector according to (7), two corner protectors can be used in a state of being connected by the protrusions and recesses having similar shapes.

[0428] According to the corner guard material involved in (8), compared with the case where the incision is composed only of a straight line, when the other surface portion is bent on the bending line, an opposite curved end portion formed by a third incision having a curved portion can appear at the end portion of one surface portion cut by the incision.

[0429] According to the corner protector according to (9), when the other surface portion is bent on the bending line, the end portions of the one surface portion cut by the cut can be cut without colliding with each other.

[0430] According to the corner protector according to (10), the opposite curved end portions can be used as a connecting means for two corner protectors.

[0431] According to the corner protector according to (11), the two corner protectors can be used in a state of being connected by the opposite curved end portions.

[0432] According to the corner guard material involved in (12), compared with the case where the portion of the bending line to the second incision is not incised, when the other surface portion is bent on the bending line, a protrusion and a recessed portion of a similar shape formed by the second incision can easily appear in the bent portion.

[0433] According to the corner protector according to (13), compared with a case where the corner protector is not composed of a single surface material, waste of material can be reduced and the corner protector can be manufactured simply.

[0434] According to the corner protector according to (14), compared with the case where the surface material is not a paper material, a corner protector that can be easily bent and is lightweight can be provided.

[0435] The above-mentioned embodiments of the present invention are provided for the purpose of illustration and description. In addition, the embodiments of the present invention do not fully and exhaustively include the present invention, and do not limit the present invention to the disclosed methods. Obviously, various modifications and changes are self-evident to those skilled in the art to which the present invention belongs. The present embodiment is selected and described in order to most easily understand the principles and applications of the present invention. Thus, other technicians in the art can understand the present invention through various variations optimized for specific uses assumed to be various embodiments. The scope of the present invention is defined by the above claims and their equivalents.

Claims

1. A corner protection material, comprising: Two surface portions, separated by a curved portion extending parallel to one side and having a rectangular shape; a cutout extending from one side of at least one of the two surface portions to the curved portion; and The bending line extends from the end of the cut to one side of the other surface portion.

2. The corner protection material according to claim 1, wherein: The bending line is interrupted and a second cut is provided on the other surface portion.

3. The corner protection material according to claim 2, wherein: The second incision is an incision consisting of continuous fold lines.

4. The corner protection material according to claim 2, wherein: The second incision is a incision having three or more line portions, and the line portions extend so as to intersect a direction parallel to the bent portion at different angles.

5. The corner protection material according to claim 4, wherein: The second incision is an incision having a curved portion.

6. The corner protection material according to claim 2, wherein: When the other surface portion is bent on the bending line, a protrusion and a depression of similar shape formed by the second cut appear on the folded portion of the other surface portion across the bending line.

7. The corner protection material according to claim 6, wherein: When two of the corner protectors are used, the two corner protectors are connected to each other by embedding the protrusion in one corner protector into the recessed portion in the other corner protector and, on the other hand, embedding the protrusion in the other corner protector into the recessed portion in the one corner protector.

8. The corner protection material according to any one of claims 1 to 7, wherein The incision is configured as a third incision having a curved portion.

9. The corner protection material according to claim 8, wherein: The curved portion is a portion composed of curved lines whose movement trajectories do not overlap when the other surface portion is bent on the bending line.

10. The corner protection material according to claim 8, wherein: When the other surface portion is bent on the bending line, the end portion of the one surface portion cut by the third incision appears as an opposite curved end portion formed by the third incision.

11. The corner protection material according to claim 10, wherein: When two corner protectors are used, the two corner protectors are connected to each other by combining and fitting the curved end portion of one corner protector with the curved end portion of the other corner protector.

12. The corner protection material according to any one of claims 2 to 11, wherein A portion of the bending line from one side of the other surface portion to the second cutout is formed as a fourth cutout.

13. The corner protector according to any one of claims 1 to 12, which is composed of a single bendable surface material.

14. The corner protection material according to claim 13, wherein: The surface material is a paper material.

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