Packaging tray

Abstract

The utility model provides a packaging tray. Damage of stored objects packaged in the packaging tray due to vibration and impact applied to the packaging tray during conveying is restrained. The packaging tray is provided with the following components: an accommodating part which accommodates a flat-plate-shaped accommodated material including a glass plate; a holding part which covers the material to be stored and the storage part and holds the material to be stored from a direction different from that of the storage part; and a plurality of holding protruding portions provided on the holding portion, protruding toward the housing portion, and extending in an extension direction in which the side surfaces extend on each of the side surfaces of the material to be housed. The holding protrusion has: a first region located between a holding end surface, which is an end surface in the extension direction, and the center; and a second region different from the first region. The shape of the holding protrusion in the first region is different from the shape of the holding protrusion in the second region.

Description

Technical Field

[0001] The utility model relates to a packaging tray. Background Art

[0002] When conveying flat-plate-shaped articles such as liquid crystal display panels, a packaging tray is used. Patent document 1 discloses a packaging tray that holds a flat-plate-shaped article and is provided with a peripheral side portion to prevent the article from falling off. The peripheral side portion is provided with a conical protrusion that is inclined toward the upper surface. The article is positioned and contained in the packaging tray by abutting against the conical surface of the protrusion. The article is conveyed in a state where a plurality of packaging trays containing the article are stacked.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2008-100743 Utility Model Content

[0006] However, there is a problem that the stored objects packed on the packaging tray are damaged due to vibration and impact applied to the packaging tray during transportation.

[0007] One form of the utility model is a packaging tray, which includes: a storage portion that stores a flat plate-shaped stored material including a glass plate; a holding portion that covers the stored material and the storage portion and holds the stored material from a direction different from the storage portion; and a plurality of protrusions that are provided on the holding portion, protrude toward the storage portion, and extend along the extension direction of each side surface of the stored material along the side surface. The protrusion has: a first area located between an end surface and a center in the extension direction; and a second area different from the first area. The shape of the protrusion in the first area is different from the shape of the protrusion in the second area.

[0008] In addition, another aspect of the present invention is a packaging tray, which includes: a storage portion that stores a flat-plate-shaped stored material including a glass plate; a holding portion that covers the stored material and the storage portion and holds the stored material from a direction different from the storage portion; and a plurality of protrusions that are provided on the holding portion, protrude toward the storage portion, and extend along the extension direction of each side surface of the stored material along the side surface. The protrusion has: a first region located between an end surface and a center in the extension direction; and a second region different from the first region. The protrusion in the first region has lower rigidity than the protrusion in the second region.

[0009] In addition, another aspect of the present invention is a packaging tray, which comprises: a storage portion for storing a flat plate-shaped stored material including a glass plate; a holding portion that covers the stored material and the storage portion and holds the stored material from a direction different from the storage portion; and a protrusion that is provided on the holding portion and protrudes toward the storage portion to surround the entire range of the outer circumference of each side surface of the stored material. The protrusion has a tapered holding side surface that contacts the side surface of the stored material and holds the stored material. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an external view of the packaging tray according to the first embodiment.

[0011] Figure 2 is a cross-sectional view of a packaging pallet.

[0012] Figure 3A and Figure 3B This is an external view of a holding portion of a packaging tray according to the first embodiment.

[0013] Figure 4A and Figure 4B It is a cross-sectional view of the holding portion of the packaging tray according to the first embodiment.

[0014] Figure 5 This is an external view of a holding portion of a packaging tray according to a second embodiment.

[0015] Figure 6 This is an external view of a holding portion of a packaging tray according to a third embodiment.

[0016] Fig. 7A , Figure 7B and Figure 7C It is a cross-sectional view of a holding portion of a packaging tray according to a third embodiment.

[0017] Figure 8 This is an external view of a holding portion of a packaging tray according to a fourth embodiment.

[0018] Fig. 9A and Fig. 9B This is an external view of a holding portion of a packaging tray according to a fifth embodiment.

[0019] Fig. 10A and Fig. 10B It is an external view of a holding portion of a packaging tray according to a sixth embodiment.

[0020] Fig.11A and Fig. 11B It is an external view of a holding portion of a packaging tray according to a seventh embodiment.

[0021] Fig.12 It is an external view of a holding portion of a packaging tray according to an eighth embodiment.

[0022] Description of Reference Numerals

[0023] 1: packaging tray, 2: stored material, 10: storage portion, 20: holding portion, 26: lower surface, 27: upper surface, 28: side surface, 100: storage bottom surface, 101: mounting recess, 102: mounting protrusion, 200: holding bottom surface, 201: holding recess, 202, 202a, 302, 402: holding protrusion, 203, 203a, 403: holding side surface, 204: holding end surface, 205: holding top surface, 205a: holding top surface, 210: opening , 211: mounting opening, 212: buffer component, 280: 1st side, 281: 2nd side, 282: 3rd side, 283: 4th side, 302a: 1st extension portion, 302b: 2nd extension portion, 310a, 310b, 311a, 311b: end portions, 402a: 1st protrusion, 402b: 2nd protrusion, 402c: 3rd protrusion, 402d: 4th protrusion, AR1: extension direction, R1: 1st region, R2: 2nd region. DETAILED DESCRIPTION

[0024] Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the disclosed content is in principle only an example, and appropriate changes that can be easily thought of by a person skilled in the art in a manner that maintains the purpose of the utility model are of course included in the scope of the present invention. In addition, in order to explain more clearly, the drawings schematically show the width, thickness, shape, etc. of each part compared to the actual form, but in principle it is an example and does not limit the interpretation of the present invention. In addition, in this specification and each figure, the same elements as those described in the drawings that have already appeared are sometimes marked with the same figure numbers and the detailed description is appropriately omitted.

[0025] <First embodiment>

[0026] Hereinafter, a packaging tray according to the first embodiment will be described with reference to the accompanying drawings. The packaging tray stores flat products including glass plates such as plate-shaped glass substrates or single glass plates used for glass cover sheets, liquid crystal panels, backplane substrates, TFT (thin film transistor) substrates for liquid crystal displays, X-ray sensor substrates, etc. as stored materials, and is used in a conveying operation process. Specifically, the stored materials including rectangular flat glass plates are conveyed together with the packaging tray in a state stored inside the packaging tray.

[0027] Figure 1 It is a perspective view showing, in an enlarged manner, the aforementioned storage material 2 and a part of the packaging tray 1 for storing the storage material 2 according to the first embodiment. Figure 2 When the storage material 2 is stored in the packaging tray 1, Figure 1 A cross-sectional view when viewed in the direction indicated by arrow Q. In addition, Figure 1 , Figure 2 The vicinity of one of the four corners of the rectangular plate-shaped packaging tray 1 and the storage material 2 is shown in an enlarged manner.

[0028] The packaging tray 1 has a storage portion 10 and a holding portion 20. The storage portion 10 is a tray formed of, for example, a resin material, and is used to place the stored material 2. The holding portion 20 is a tray formed of, for example, a resin material, and is used to cover (coat) the stored material 2 and the storage portion 10 in which the stored material 2 is stored. In the following description, the side where the storage portion 10 is provided is sometimes referred to as the lower side, and the side where the holding portion 20 is provided is sometimes referred to as the upper side.

[0029] <Storage section 10>

[0030] The storage section 10 holds the stored material 2 from the lower side. The storage section 10 has a storage bottom surface 100, a mounting recess 101, and a mounting protrusion 102. The storage bottom surface 100 is a surface opposite to the surface (lower surface) 26 on the lower side of the stored material 2 when the stored material 2 is placed. The mounting recess 101 protrudes relative to the storage bottom surface 100 in a direction opposite to the direction in which the stored material 2 is placed (i.e., downward). The mounting recess 101 is formed on the outer periphery of each of the four side surfaces 28 of the rectangular flat plate-shaped stored material 2 placed on the storage bottom surface 100, and extends along the extension direction in which each side surface 28 of the stored material 2 extends. In addition, in the extension direction, the length of the mounting recess 101 is shorter than the length of the side surface 28 of the stored material 2. The stored material 2 is placed in an area R on the storage bottom surface 100 surrounded by a plurality of mounting recesses 101. The mounting protrusion 102 is formed on the outer periphery of the mounting recess 101 , and protrudes upward relative to the storage bottom surface 100 .

[0031] <Holding section 20>

[0032] The holding portion 20 is arranged on the upper part of the stored material 2 and the storage portion 10 storing the stored material 2, thereby covering the stored material 2 and the storage portion 10 from above. Thus, the holding portion 20 holds the stored material 2 from a direction different from that of the storage portion 10. The holding portion 20 has a holding bottom surface 200, a holding recess 201, and a holding protrusion 202. The holding bottom surface 200 is a surface opposite to the surface (upper surface) 27 on the upper side of the stored material 2 when the holding portion 20 is arranged above the stored material 2 and the storage portion 10.

[0033] <Holding recessed portion 201>

[0034] When the retaining recess 201 is arranged on the storage section 10, it protrudes in a direction (i.e., upward) opposite to the direction relative to the storage section 10 and the stored material 2 relative to the retaining bottom surface 200. Therefore, when the retaining section 20 is viewed from the bottom surface, the retaining recess 201 is recessed upward. The retaining recess 201 is formed at a position corresponding to the position of the storage section 10 where the mounting protrusion 102 is formed. That is, the retaining recess 201 is formed along the entire area of ​​the outer periphery of the retaining section 20. Therefore, if the retaining section 20 is arranged on the upper part of the storage section 10, as shown in FIG. Figure 2 As shown, the mounting protrusion 102 of the storage portion 10 is received in the holding recess 201 of the holding portion 20 .

[0035] In addition, Figure 1 2 shows a case where the mounting protrusion 102 is formed along the entire area of ​​the outer periphery of the storage portion 10, and the holding recess 201 is formed along the entire area of ​​the outer periphery of the holding portion 20. However, the mounting protrusion 102 may be formed on a portion of the outer periphery of the storage portion 10, and the holding recess 201 may be formed on a portion of the outer periphery of the holding portion 20.

[0036] <Holding protrusion 202>

[0037] The retaining protrusion 202 is a protrusion that protrudes downward toward the storage section 10 and the stored material 2 relative to the retaining bottom surface 200 when it is arranged in the storage section 10. The retaining protrusion 202 is formed at a position corresponding to the position where the mounting recess 101 is formed in the storage section 10. Specifically, the retaining protrusion 202 is formed on the outer periphery of each of the four side surfaces 28 of the rectangular flat plate-shaped stored material 2, and extends along the extension direction along which the side surfaces of the stored material 2 extend. That is, a plurality of retaining protrusions 202 are provided in the retaining section 20. The length of the retaining protrusion 202 extending along the extension direction is less than the length of the mounting recess 101 of the storage section 10 extending along the extension direction. Therefore, if the retaining section 20 is arranged in the upper part of the storage section 10, the retaining protrusion 202 is accommodated in the mounting recess 101 of the storage section 10.

[0038] Hereinafter, the holding protrusion 202 will be described in detail.

[0039] Figure 3A and Figure 3B is an appearance diagram of the lower surface side of the holding portion 20, Figure 3A represents the entirety of the holding portion 20, Figure 3B Enlarged Figure 3A The range P shown. In addition, Figure 4A and Figure 4B is a cross-sectional view of the holding portion 20, Figure 4A yes Figure 3B The cross section at line AA is shown. Figure 4B yes Figure 3BFIG. 4 also shows a cross section at line BB of FIG. 4. FIG. 4 also shows a storage section 10 in which the holding section 20 is arranged and a storage material 2 stored in the storage section 10. Figure 3A 2 shows a case where one holding protrusion 202 is formed on the outer periphery of each of the four side surfaces 28 of the stored material 2. However, a plurality of holding protrusions 202 may be formed on the outer periphery of each of the four side surfaces 28 of the stored material 2 depending on the length of the four side surfaces 28.

[0040] The retaining protrusion 202 has a retaining side surface 203, a retaining end surface 204, and a retaining top portion 205. The retaining side surface 203 is a side surface of the retaining protrusion 202 connected to the retaining bottom surface 200 and formed into an inclined tapered shape that is not parallel to the up-down direction. Therefore, the retaining side surface 203 also has a long side along the extension direction AR1 in which the retaining protrusion 202 extends. The retaining side surface 203 is a surface opposite to the side surface 28 of the stored material 2 stored in the storage portion 10. In addition, the tapered shape of the retaining protrusion 202 is formed in a manner that protrudes toward the side surface 28 of the stored material 2 along the intersecting direction AR2 that intersects the extension direction AR1 as it goes upward. Therefore, in a state in which the retaining side surface 203 can contact the edge portion connecting the upper end of the side surface 28 of the stored material 2 and the upper surface 27, the retaining portion 20 is arranged at the upper portion of the storage portion 10 (refer to Figure 4B That is, when the holding portion 20 is arranged on the upper part of the storage portion 10, the holding side surface 203 is in contact with the edge of the stored material 2, or the holding side surface 203 is not in contact with the edge of the stored material 2 and a gap is formed.

[0041] The holding end surface 204 is a surface connected to the ends of the holding bottom surface 200 and the holding side surface 203 in the extending direction AR1. The holding top surface 205 is a surface connected to the lower end of the holding side surface 203 and the lower end of the holding end surface 204.

[0042] like Figure 3A , Figure 3B As shown, the retaining protrusion 202 has: a first region R1 including both ends in the extension direction AR1; and a second region R2 which is different from the first region R1. Specifically, the first region R1 is a region between the retaining end face 204 which is an end face in the extension direction AR1 and the center. The second region R2 is a region including the center in the extension direction AR1. The shape of the retaining protrusion 202 in the first region R1 is different from the shape of the retaining protrusion 202 in the second region R2.

[0043] Specifically, the holding top 205 of the holding protrusion 202 in the first region R1 is not parallel to the extension direction AR1 on the side opposite to the side 28 of the stored material 2, and is formed in an arc shape toward the outer periphery of the holding portion 20. That is, the holding top 205 in the first region R1 is formed in a shape separated from the side 28 of the stored material 2. More specifically, the closer the holding top 205 in the first region R1 is to the end (holding end face 204) in the extension direction AR1, the greater the separation distance from the side 28 of the stored material 2. In addition, the size of R of the arc-shaped portion of the holding top 205 and the size of the range of the first region R1 can be appropriately adopted as preferred values ​​according to the length of the holding protrusion 202 along the extension direction AR1, the size of the stored material 2, and the like. For example, the holding top 205 in the first region R1 is formed in a gentle arc shape with R of 300 mm to 900 mm at least in part, and in the first embodiment, R is, for example, a value of about 600 mm. In contrast, in the case of the comparative example in which the retaining top portion is formed in a shape that is not separated from the side surface of the stored material 2, the value of R of the retaining top portion near the retaining end surface is about 20 mm to 30 mm. Therefore, it can be said that the retaining protrusion 202 of the first embodiment has a retaining top portion 205 formed in a gentle arc shape compared to the retaining protrusion of the comparative example.

[0044] The holding top 205 in the first region R1 has the above-mentioned shape, so the holding side surface 203 connected to the holding top 205 is separated from the side surface 28 of the stored material 2 in the first region R1. In addition, the closer the holding side surface 203 is to the end in the extension direction AR1, the greater the distance of separation from the side surface 28 of the stored material 2. Figure 4A As shown, when no vibration or impact is applied to the packaging tray 1 (normal state), the first region R1 of the holding side surface 203 does not come into contact with the side surface 28 of the storage material 2 .

[0045] The side of the holding top 205 in the second region R2 that is opposite to the side 28 of the stored material 2 is substantially parallel to the extension direction AR1. That is, the holding top 205 in the second region R2 is substantially parallel to the side 28 of the stored material 2. Therefore, the length of the holding top 205 in the second region R2 along the cross direction AR2 is longer than the length of the holding top 205 in the first region R1 along the cross direction AR2. Since the holding top 205 in the second region R2 has the above-mentioned shape, Figure 4B As shown, the holding side surface 203 connected to the holding top portion 205 is in contact with the side surface 28 of the stored material 2 in the second region R2. That is, the stored material 2 is held by the holding side surface 203 in the second region R2.

[0046] The holding protrusion 202 in the first region R1 is formed by connecting three surfaces, namely, the holding side surface 203, the holding end surface 204, and the holding top surface 205. Therefore, compared with the holding protrusion 202 in the second region R2 formed by connecting two surfaces, namely, the holding side surface 203 and the holding top surface 205, the holding protrusion 202 in the first region R1 is strong and has high rigidity. Unlike the first embodiment, when the first region R1 is not formed in the above-mentioned shape and the holding side surface 203 is a shape that is not separated from the side surface 28 of the stored material 2, the holding side surface 203 is in contact with the side surface 28 of the stored material 2 even in the first region R1. In this state, when vibration or impact is applied to the packaging tray 1 (impact state), local stress acts on the stored material 2 that is in contact with the holding side surface 203 in the first region R1 or the stored material 2 is deformed, and the stored material 2 may be damaged.

[0047] In contrast, in the first embodiment, in the normal state, the holding side surface 203 does not contact the side surface 28 of the stored material 2 in the first region R1. Furthermore, in the impact state, the side surface 28 of the stored material 2 that has been bent or the like due to the impact force contacts the holding side surface 203 of the first region R1 only for a very short period of time. Therefore, in the impact state, the local stress acting on the stored material 2 or the deformation of the stored material 2 is alleviated, and the damage of the stored material 2 can be suppressed.

[0048] According to the above-mentioned first embodiment, at least one of the following effects is obtained.

[0049] (1) The shape of the holding protrusion 202 in the first region R1 is different from the shape of the holding protrusion 202 in the second region R2. As a result, the holding side surface 203 is not always in contact with the side surface 28 of the received material 2 near the holding end surface 204 which is the end of the holding protrusion 202. As a result, the local stress acting on the received material 2 or the deformation of the received material 2 in the impact state can be alleviated, and the damage of the received material 2 can be suppressed.

[0050] (2) The closer the holding side surface 203 in the first region R1 is to the end of the extension direction AR1, the more separated (distanced) it is from the side surface 28 of the received material 2. Thus, in a normal state, a shape is obtained in which the holding protrusion 202 does not contact the side surface 28 of the received material 2 in the first region R1. As a result, in an impact state, local stress is unlikely to act on the received material 2, and the received material 2 is unlikely to deform, thereby reducing the cause of damage to the received material 2.

[0051] <Second embodiment>

[0052] Hereinafter, a packaging tray according to a second embodiment will be described. In the following description, the same reference numerals are given to the same components as those of the first embodiment, and mainly the differences will be described. Points not particularly described are the same as those of the first embodiment.

[0053] Figure 5 This is an appearance diagram showing the holding portion 20 of the packaging tray 1 of the second embodiment by enlarging a part of the lower side. In the holding protrusion 202 of the holding portion 20 of the second embodiment, the shape of the holding protrusion 202 in the first region R1 is different from the shape of the holding protrusion 202 in the second region R2, as in the first embodiment. Specifically, the holding side surface 203 in the first region R1 has a shape that does not contact the side surface 28 of the stored material 2 in a normal state. That is, the closer the holding side surface 203 is to the end in the extension direction AR1 in the first region R1, the greater the separation distance from the side surface 28 of the stored material 2. In addition, in the second embodiment, the holding top portion 205 in the first region R1 is also formed in a gentle arc shape. Specifically, in the holding top portion 205 formed in an arc shape, the value of R of at least a portion is larger than the value of R in the case of the first embodiment, and as an example, a value of about 1500 mm is adopted. That is, compared with the comparative example in which the value of R is about 20 mm to 30 mm, it can be said that the holding protrusion 202 of the second embodiment has the holding top portion 205 formed in a gentle arc shape.

[0054] However, in the second embodiment, the first region R1 is a range from the center of the retaining protrusion 202 to the end (retaining end surface 204) along the extension direction AR1. In other words, the center portion of the retaining protrusion 202 in the extension direction AR1 becomes the second region R2. Therefore, the side surface 28 of the stored material 2 is only in contact with the center portion of the retaining side surface 203 in the normal state. And, in the impact state, the side surface 28 of the stored material 2 that has been bent due to the impact force is in contact with the retaining side surface 203 of the first region R1 only for a very short period of time. Therefore, as in the case of the first embodiment, the local stress applied to the stored material 2 in the impact state can be alleviated, the deformation of the stored material 2 can be alleviated, and the damage of the stored material 2 can be suppressed.

[0055] According to the second embodiment described above, the holding side surface 203 in the second region R2 is the central portion in the extension direction AR1 of the holding side surface 203, and therefore, in a normal state, only the central portion of the holding side surface 203 is in contact. As a result, the same effects as those obtained by the first embodiment described above are obtained.

[0056] <Third embodiment>

[0057] Hereinafter, a packaging tray according to a third embodiment will be described. In the following description, the same reference numerals are given to the same components as those of the first embodiment, and mainly the differences will be described. Points not particularly described are the same as those of the first embodiment.

[0058] Figure 6 This is an external view showing an enlarged portion of the lower side of a holding portion 20 included in a packaging tray 1 according to the third embodiment. 7A to 7C yes Figure 6 A cross-sectional view of the retaining tab 202 is shown. Fig. 7A yes Figure 6 The cross-sectional view at the CC line of Figure 7B yes Figure 6 The cross-sectional view at the DD line, Figure 7C yes Figure 6 Cross-sectional view at line EE.

[0059] As for the retaining protrusion 202 of the retaining portion 20 in the third embodiment, the shape of the retaining protrusion 202 in the first region R1 is different from the shape of the retaining protrusion 202 in the second region R2, similarly to the first embodiment. Specifically, the retaining protrusion 202 formed in a tapered shape retains the side surface 203 in the first region R1 at different positions along the extension direction AR1. More specifically, the angle formed by the retaining bottom surface 200 and the retaining side surface 203 of the retaining portion 20 gradually decreases as it approaches the end (retaining end surface 204) of the first region R1 along the extension direction AR1 from the vicinity of the boundary between the first region R1 and the second region R2. That is, the angle at which the retaining protrusion 202 protrudes relative to the retaining bottom surface 200 becomes smaller as it approaches the end in the extension direction AR1.

[0060] like Fig. 7A As shown, near the boundary between the first region R1 and the second region R2, the angle θ1 formed by the holding bottom surface 200 and the holding side surface 203 is, for example, 60°. Figure 7C As shown, near the end of the first region R1, the angle θ3 formed by the holding bottom surface 200 and the holding side surface 203 is, for example, 45°. Figure 7B As shown, the angle θ2 formed by the holding bottom surface 200 and the holding side surface 203 near the middle position between the boundary between the first region R1 and the second region R2 and the end of the first region R1 is, for example, 52°. In addition, the values ​​of the above-mentioned angles θ1, θ2, and θ3 are examples, and preferred values ​​can be appropriately adopted according to the length of the holding protrusion 202 along the extension direction AR1.

[0061] In the first region R1, the angle formed by the holding bottom surface 200 and the holding side surface 203 is different for each position along the extension direction AR1, so that the holding top portion 205 connected to the holding side surface 203 is formed into an arc shape on the side opposite to the side surface 28 of the stored material 2. That is, in the first region R1, the holding top portion 205 of the third embodiment has the same shape as the shape of the holding top portion 205 of the first embodiment in the first region R1.

[0062] Therefore, in the third embodiment as well, in the normal state, the holding side surface 203 of the first region R1 does not contact the side surface 28 of the stored material 2. Furthermore, in the impact state, the side surface 28 of the stored material 2 that has been bent or the like due to the impact force contacts the holding side surface 203 of the first region R1 only for a very short period of time. Therefore, the concentration of local stress on the stored material 2 in the impact state can be alleviated, the deformation of the stored material 2 can be alleviated, and thus the damage of the stored material 2 can be suppressed.

[0063] According to the third embodiment described above, the angle at which the holding protrusion 202 protrudes relative to the holding bottom surface 200 becomes smaller as it approaches the end portion in the extension direction AR1, and therefore, in the normal state, a shape is obtained in which the holding protrusion 202 does not contact the side surface 28 of the stored material 2 in the first region R1. As a result, the same effects as those obtained by the first embodiment described above are obtained.

[0064] <Fourth embodiment>

[0065] Hereinafter, a packaging tray according to a fourth embodiment will be described. In the following description, the same reference numerals are given to the same components as those of the first embodiment, and mainly the differences will be described. Points not particularly described are the same as those of the first embodiment.

[0066] Figure 8 This is an appearance diagram showing a part of the lower side of the holding portion 20 of the packaging tray 1 of the fourth embodiment in an enlarged manner. The holding protrusion 202a of the holding portion 20 of the fourth embodiment has a holding side surface 203a that contacts the side surface of the stored material 2 even in the first region R1. Specifically, the side of the holding top portion 205a of the holding protrusion 202a that faces the side surface 28 of the stored material 2 is not formed into an arc shape in the first region R1, unlike the first to third embodiments, but extends substantially parallel to the extension direction AR1. Therefore, regardless of the normal state or the impact state, the side surface 28 of the stored material 2 contacts the holding side surface 203a.

[0067] However, the wall thickness of the retaining side surface 203a in the first region R1 is thinner (smaller) than the wall thickness of the retaining side surface 203a in the second region R2. That is, the retaining protrusion 202a in the first region R1 is softer (less rigid) than the retaining protrusion 202a in the second region R2. Therefore, it is possible to suppress the stress concentration in the first region R1 of the retaining protrusion 202a in the impact state. Thus, it is possible to alleviate the local stress concentration on the received material 2 in the impact state, and to alleviate the deformation of the received material 2, thereby suppressing the damage of the received material 2.

[0068] According to the fourth embodiment described above, at least one of the following effects is obtained.

[0069] (3) The holding protrusion 202a in the first region R1 has lower rigidity than the holding protrusion 202a in the second region R2. Thus, it is possible to suppress the stress concentration in the first region R1 of the holding protrusion 202a during an impact state. As a result, it is possible to alleviate the stress applied to the received material 2, alleviate the deformation of the received material 2, and suppress the damage of the received material 2.

[0070] (4) The wall thickness of the holding side surface 203a in the first region R1 is thinner than the wall thickness of the holding side surface 203a in the second region R2. As a result, the rigidity of the holding protrusion 202a in the first region R1 can be lower than the rigidity of the holding protrusion 202a in the second region R2. As a result, the stress applied to the received material 2 can be alleviated during the impact state, and the deformation of the received material 2 can be alleviated, which can reduce the cause of damage to the received material 2.

[0071] <Fifth embodiment>

[0072] Hereinafter, a packaging tray according to a fifth embodiment will be described. In the following description, the same reference numerals are given to the same components as those of the fourth embodiment, and mainly the differences will be described. Points not particularly described are the same as those of the fourth embodiment.

[0073] Fig. 9A This is an enlarged external view showing a portion of the lower side of the holding portion 20 of the packaging tray 1 of the fifth embodiment. The holding protrusion 202a of the holding portion 20 of the fifth embodiment has a holding side surface 203a that contacts the side surface 28 of the storage material 2 even in the first region R1, similarly to the case of the fourth embodiment. In addition, unlike the fourth embodiment, the wall thickness of the holding side surface 203a in the first region R1 and the second region R2 is substantially the same.

[0074] In the retaining protrusion 202a of the retaining portion 20 of the fifth embodiment, similarly to the fourth embodiment, the rigidity of the retaining protrusion 202a in the first region R1 is lower than the rigidity of the retaining protrusion 202a in the second region R2. Specifically, in the first region R1, a plurality of slit-shaped openings 210 are formed on the retaining side surface 203a. Each opening 210 penetrates inside and outside the retaining side surface 203a and extends in a direction (up and down direction) intersecting the extension direction AR1. A plurality of openings 210 having the above-mentioned shape are arranged along the extension direction AR1. In addition, the opening 210 may also extend along the extension direction AR1. In this case, a plurality of openings 210 may also be arranged in the up and down direction.

[0075] According to the fifth embodiment described above, the plurality of openings 210 are formed in the first region R1, so that the rigidity of the holding side surface 203a in the first region R1 is reduced, and stress concentration on the first region R1 of the holding protrusion 202a in the impact state can be suppressed. Thus, similar to the effect (3) obtained by the fourth embodiment described above, the stress applied to the received material 2 in the impact state can be relieved, the deformation of the received material 2 can be relieved, and damage to the received material 2 can be suppressed.

[0076] <Sixth embodiment>

[0077] Hereinafter, a packaging tray according to a sixth embodiment will be described. In the following description, the same reference numerals are given to the same components as those of the fourth embodiment, and mainly the differences will be described. Points not particularly described are the same as those of the fourth embodiment.

[0078] Fig. 10A This is an enlarged external view showing a portion of the lower side of the holding portion 20 of the packaging tray 1 of the sixth embodiment. The holding protrusion 202a of the holding portion 20 of the sixth embodiment has a holding side surface 203a that contacts the side surface of the storage material 2 even in the first region R1, similarly to the case of the fourth embodiment. In addition, unlike the fourth embodiment, the wall thickness of the holding side surface 203a in the first region R1 and the second region R2 is substantially the same.

[0079] In the holding protrusion 202a of the holding portion 20 of the sixth embodiment, the rigidity of the holding protrusion 202a in the first region R1 is lower than the rigidity of the holding protrusion 202a in the second region R2, similarly to the fourth embodiment. Specifically, a mounting opening 211, for example, in a rectangular shape, is formed on the holding side surface 203a of the first region R1. The mounting opening 211 is an opening for mounting a buffer member 212 whose material is different from that of the holding portion 20. The buffer member 212 is made of a material that is softer (less rigid) than the material forming the holding portion 20, such as polyurethane foam or non-woven fabric. The buffer member 212 is fixed to the mounting opening 211 by bonding or the like. At this time, the buffer member 212 can be mounted in a manner that is substantially flush with the holding side surface 203a, that is, in a manner that the buffer member 212 does not protrude toward the side surface 28 of the stored material 2 relative to the holding side surface 203a.

[0080] According to the sixth embodiment described above, the mounting opening 211 formed on the holding side surface 203a of the first region R1 is provided with a buffer member 212, so that the rigidity of the holding side surface 203a in the first region R1 is reduced. Therefore, it is possible to suppress the concentration of stress on the first region R1 of the holding protrusion 202a in the impact state. Thus, similar to the effect (3) obtained by the fourth embodiment described above, it is possible to alleviate the stress applied to the received material 2 in the impact state, alleviate the deformation of the received material 2, and suppress the occurrence of damage to the received material 2.

[0081] In addition, instead of installing the buffer component 212 on the mounting opening 211 formed on the holding side surface 203a of the first region R1, the holding side surface 203a of the first region R1 may be formed of a material different from that of the holding side surface 203a of the second region R2. In this case, the holding side surface 203a in the first region R1 is formed using a material that is softer (less rigid) than the material forming the holding side surface 203a in the second region R2. Specifically, a component formed of the same material as the above-mentioned buffer component 212 is integrally formed at a position where the above-mentioned mounting opening 211 is formed in the holding side surface 203a of the first region R1 by, for example, insert molding. As a result, the stress applied to the stored material 2 in the impact state can be alleviated, and the deformation of the stored material 2 can be alleviated. As a result, similar to the effect (3) of the fourth embodiment described above, the damage to the stored material 2 can be suppressed.

[0082] <Seventh embodiment>

[0083] Hereinafter, a packaging tray according to a seventh embodiment will be described. In the following description, the same reference numerals are given to the same components as those of the first embodiment, and mainly the differences will be described. Points not particularly described are the same as those of the first embodiment.

[0084] Fig.11A This is an external view showing, in an enlarged manner, a holding portion 20 included in a packaging tray 1 according to the seventh embodiment and a portion on the lower side of a storage material 2 held by the holding portion 20 .

[0085] The holding portion 20 of the seventh embodiment has holding protrusions 302 near each of the four corners of the stored material 2. Fig.11A The holding portion 20 provided close to one of the four corners of the storage material 2 is shown.

[0086] The retaining protrusion 302 has a first extension portion 302a and a second extension portion 302b. The first extension portion 302a extends along a first extension direction AR3 extending along the first side surface 280 of the stored material 2. The second extension portion 302b extends along a second extension direction AR4 extending along the second side surface 281 of the stored material 2. The first extension direction AR3 and the second extension direction AR4 intersect with each other. More specifically, the first extension direction AR3 and the second extension direction AR4 are orthogonal. In other words, the first extension portion 302a and the second extension portion 302b extend in directions intersecting with each other, more specifically, in directions orthogonal to each other.

[0087] The end 310a on one side of the first extension portion 302a is connected to the end 311a on one side of the second extension portion 302b. Specifically, the end 310a on one side of the first extension portion 302a is located near the corner where the first side 280 and the second side 281 of the stored material 2 are connected. The end 311a on one side of the second extension portion 302b is located near the corner where the second side 281 and the first side 280 of the stored material 2 are connected. Thus, the retaining protrusion 302 is formed on the periphery of the stored material 2 along the first side 280 and the second side 281 near the corner of the stored material 2.

[0088] The length of the first extension portion 302a extending along the first extension direction AR3 is shorter than the length of the first side surface 280 of the stored material 2. A first region R1 similar to the first embodiment described above is formed near the end 310b on the other side of the first extension portion 302a. Specifically, the retaining side surface 203 is separated from the first side surface 280 of the stored material 2 at the end 310b in the first extension portion 302a in the direction away from the corner between the first side surface 280 and the second side surface 281 of the stored material 2. However, near the end 310a on one side of the first extension portion 302a, the retaining side surface 203 is in contact with the first side surface 280 of the stored material 2. That is, the shape of the end 310b on the other side of the first extension portion 302a is different from the shape of the end 310a on one side of the first extension portion 302a.

[0089] Similarly, the length of the second extension portion 302b extending along the second extension direction AR4 is shorter than the length of the second side surface 281 of the stored material 2. A first region R1 similar to the first embodiment described above is formed near the end 311b on the other side of the second extension portion 302b. Specifically, near the end 311b in the second extension portion 302b in the direction away from the corner between the first side surface 280 and the second side surface 281 of the stored material 2, the retaining side surface 203 is separated from the second side surface 281 of the stored material 2. However, near the end 311a on one side of the second extension portion 302b, the retaining side surface 203 is in contact with the second side surface 281 of the stored material 2. That is, the shape of the end 311b on the other side of the second extension portion 302b is different from the shape of the end 311a on one side of the second extension portion 302b.

[0090] In addition, the holding protrusions 302 are formed near the four corners of the stored material 2, and therefore, the mounting recesses 101 of the storage section 10 are also formed near the four corners of the stored material 2. Thus, when the holding section 20 is arranged on the upper part of the storage section 10, the holding protrusions 302 are accommodated in the mounting recesses 101 of the storage section 10.

[0091] According to the seventh embodiment described above, by having the above-described shape of the retaining protrusion 302, the retaining protrusion 302 does not form an end portion that causes stress concentration on the stored material 2 and deformation of the stored material 2 when vibration or impact is applied to the packaging tray 1. Therefore, the stress applied to the stored material 2 and the deformation of the stored material 2 can be alleviated in the impact state, and the damage to the stored material 2 can be suppressed. That is, the same effects as those obtained by the first embodiment described above are obtained.

[0092] In addition, it is not limited to forming the first region R1 similar to the first embodiment near the ends 310b and 311b on the other side of the first extension portion 302a and the second extension portion 302b. The first region R1 similar to the first region R1 of the second embodiment or the third embodiment may be formed near the ends 310b and 311b on the other side of the first extension portion 302a and the second extension portion 302b. Thus, the same effects as those obtained by the second embodiment or the third embodiment described above are obtained.

[0093] In addition, the first region R1 similar to the first region R1 of the fourth embodiment, the fifth embodiment, or the sixth embodiment may be formed near the ends 310b and 311b on the other side of the first extension portion 302a and the second extension portion 302b. In other words, the end 310b on the other side of the first extension portion 302a and the end 311b on the other side of the second extension portion 302b may have lower rigidity than the end 310a on one side of the first extension portion 302a and the end 311a on one side of the second extension portion 302b. As an example, in Fig. 11B 3 shows a case where the wall thickness near the end portions 310b and 311b on the other side of the first extension portion 302a and the second extension portion 302b is thinner than the wall thickness near the end portions 310a and 311a on one side of the first extension portion 302a and the second extension portion 302b. Thus, the same effects as those obtained by the fourth embodiment, the fifth embodiment, or the sixth embodiment described above are obtained.

[0094] In addition, depending on the length of the first side surface 280 and the second side surface 281 of the stored material 2, the retaining protrusions 202, 202a described in the first to sixth embodiments may be formed between the retaining protrusion 302 provided at one corner of the stored material 2 and the retaining protrusion 302 provided at the other corner.

[0095] <Eighth embodiment>

[0096] Hereinafter, a packaging tray according to an eighth embodiment will be described. In the following description, the same reference numerals are given to the same components as those of the first embodiment, and mainly the differences will be described. Points not particularly described are the same as those of the first embodiment.

[0097] Fig.12 This is an external view of the lower side of the holding portion 20 included in the packaging tray 1 according to the eighth embodiment and the storage material 2 held by the holding portion 20 .

[0098] The holding portion 20 of the eighth embodiment has a holding protrusion 402. The holding protrusion 402 is formed along the outer periphery of the four side surfaces (the first side surface 280, the second side surface 281, the third side surface 282, and the fourth side surface 283) of the stored material 2. The holding protrusion 402 is formed so as to surround the entire range of the outer periphery of the stored material 2.

[0099] Specifically, the holding protrusion 402 includes a first protrusion 402a, a second protrusion 402b, a third protrusion 402c, and a fourth protrusion 402d. The first protrusion 402a extends along the first side surface 280 of the stored material 2. The second protrusion 402b extends along the second side surface 281 of the stored material 2. The third protrusion 402c extends along the third side surface 282 of the stored material 2. The fourth protrusion 402d extends along the fourth side surface 283 of the stored material 2.

[0100] The end 410a on one side of the first protrusion 402a is connected to the end 411a on one side of the second protrusion 402b, and the end 410b on the other side of the first protrusion 402a is connected to the end 412a on one side of the third protrusion 402c. The end 413a on one side of the fourth protrusion 402d is connected to the end 411b on the other side of the second protrusion 402b, and the end 413b on the other side of the fourth protrusion 402d is connected to the end 412b on the other side of the third protrusion 402c. In other words, the first protrusion 402a, the second protrusion 402b, the third protrusion 402c, and the fourth protrusion 402d are connected at the four corners of the storage material 2, so that the outer periphery of the storage material 2 is surrounded by the retaining protrusion 402.

[0101] In addition, the holding side surface 403 of each of the first protrusion 402a, the second protrusion 402b, the third protrusion 402c, and the fourth protrusion 402d is not formed in the first region R1 described in the above-mentioned embodiments. That is, the holding side surface 403 contacts the side surface 28 of the storage material 2 in the entire range where the first protrusion 402a, the second protrusion 402b, the third protrusion 402c, and the fourth protrusion 402d extend.

[0102] According to the eighth embodiment described above, the retaining protrusion 402 has the above-described shape, so that the retaining side surface 403 contacts the entire area of ​​the side surface 28 of the stored material 2. That is, the retaining protrusion 402 is not formed at an end portion that causes the concentration of stress on the stored material 2 and the deformation of the stored material 2 when vibration or impact is applied to the packaging tray 1. Therefore, the stress applied to the stored material 2 and the deformation of the stored material 2 can be alleviated in the impact state, and the damage to the stored material 2 can be suppressed.

[0103] In the scope of the concept of the present invention, as long as a person skilled in the art can think of various changes and modifications, these changes and modifications should be understood to also belong to the scope of the present invention. For example, as long as the purpose of the present invention is possessed, the scheme formed by the addition, deletion or design change of the constituent elements of the above-mentioned embodiments by the person skilled in the art, or the scheme formed by the addition, omission or condition change of the process is also included in the scope of the present invention.

[0104] For example, the present invention is not limited to the case where the opening 210 described in the fifth embodiment is formed on the holding side surface 203 a , and the opening 210 may also be formed on the holding end surface 204 a . Fig. 9B A portion of the lower side of the holding portion 20 in this case is shown in an enlarged manner. Fig. 9B As shown in FIG. 1 , the opening 210 formed in the holding end surface 204a also extends in the vertical direction similarly to the opening 210 formed in the holding side surface 203a. Thus, the rigidity of the holding protrusion 202a in the first region R1 can be further reduced.

[0105] In addition, the mounting opening 211 is not limited to the case described in the sixth embodiment where the mounting opening 211 is formed on the holding side surface 203 a , and the mounting opening 211 may be formed on the holding side surface 203 a and the holding end surface 204 a . Fig. 10B A portion of the lower side of the holding portion 20 in this case is shown in an enlarged manner. Fig. 10B As shown in FIG. 2 , a mounting opening 211 is formed from the holding side surface 203a to the holding end surface 204a. This can further reduce the rigidity of the holding protrusion 202a in the first region R1.

Claims

1. A packaging tray, characterized in that: have: A storage portion for storing flat-plate-shaped stored materials including glass plates; a holding portion covering the stored material and the storage portion and holding the stored material from a direction different from that of the storage portion; as well as A plurality of protrusions are provided on the holding portion, protruding toward the storage portion, and extending along the extending direction of the side surface at each side surface of the stored material. The protrusion has: a first region located between an end surface and a center in the extending direction; and a second region different from the first region, The shape of the protrusion in the first region is different from the shape of the protrusion in the second region.

2. The packaging tray according to claim 1, characterized in that: The protrusion has a tapered holding side surface, and the tapered holding side surface contacts the side surface of the accommodated material along the extending direction to hold the accommodated material. In the extending direction, the length of the holding side surface is shorter than the length of the side surface of the stored material. The holding side surface in the first region is spaced further away from the side surface of the accommodated material as it approaches the end in the extending direction.

3. The packaging tray according to claim 2, characterized in that: The holding side surface in the second region is the center of the holding side surface in the extending direction.

4. The packaging tray according to claim 1, characterized in that: The holding portion has a holding bottom surface facing the surface of the stored material when holding the stored material. In the first region, an angle at which the protruding portion protrudes relative to the holding bottom surface decreases as it approaches an end portion in the extending direction.

5. The packaging tray according to any one of claims 1 to 4, characterized in that: The protrusion has: a first extension portion extending along a first extension direction extending along a first side surface of the received material; and a second extension portion extending along a second extension direction extending along a second side surface of the received material, wherein the first extension direction and the second extension direction intersect each other. An end portion on one side of the first extending portion is connected to an end portion on one side of the second extending portion. The shapes of the other end portion of the first extension portion and the other end portion of the second extension portion are different from the shapes of the one end portion of the first extension portion and the one end portion of the second extension portion.

6. A packaging tray, characterized in that: have: A storage portion for storing flat-plate-shaped stored materials including glass plates; a holding portion covering the stored material and the storage portion and holding the stored material from a direction different from that of the storage portion; as well as A plurality of protrusions are provided on the holding portion, protruding toward the storage portion, and extending along the extending direction of the side surface at each side surface of the stored material. The protrusion has: a first region located between an end surface and a center in the extending direction; and a second region different from the first region, The protrusion in the first region has lower rigidity than the protrusion in the second region.

7. The packaging tray according to claim 6, characterized in that: The protrusion has a tapered holding side surface, and the tapered holding side surface contacts the side surface of the accommodated material along the extending direction to hold the accommodated material. In the extending direction, the length of the holding side surface is shorter than the length of the side surface of the stored material. The wall thickness of the holding side surface in the first region is smaller than the wall thickness of the holding side surface in the second region.

8. The packaging tray according to claim 6, characterized in that: The protrusion has a tapered holding side surface, and the tapered holding side surface contacts the side surface of the accommodated material along the extending direction to hold the accommodated material. In the extending direction, the length of the holding side surface is shorter than the length of the side surface of the stored material. A plurality of slits are formed on the holding side surface in the first region.

9. The packaging tray according to claim 6, characterized in that: The protrusion has a tapered holding side surface, and the tapered holding side surface contacts the side surface of the accommodated material along the extending direction to hold the accommodated material. In the extending direction, the length of the holding side surface is shorter than the length of the side surface of the stored material. The holding side surface in the first region is formed of a member that is softer than a material forming the holding side surface in the second region.

10. The packaging tray according to claim 9, characterized in that: The soft member is attached to an opening formed on the holding side surface in the first region.

11. The packaging tray according to any one of claims 6 to 10, characterized in that The protrusion has: a first extension portion extending along a first extension direction extending along a first side surface of the received material; and a second extension portion extending along a second extension direction extending along a second side surface of the received material, wherein the first extension direction and the second extension direction intersect each other. An end portion on one side of the first extending portion is connected to an end portion on one side of the second extending portion. The rigidity of the other end portion of the first extension portion and the other end portion of the second extension portion is lower than the rigidity of the one end portion of the first extension portion and the one end portion of the second extension portion.

12. A packaging tray, characterized in that: have: A storage portion for storing flat-plate-shaped stored materials including glass plates; a holding portion covering the stored material and the storage portion and holding the stored material from a direction different from that of the storage portion; as well as a protrusion provided on the holding portion, protruding toward the storage portion and surrounding the entire range of the outer circumference of each side surface of the stored material, The protrusion has a tapered holding side surface that contacts with a side surface of the accommodated material to hold the accommodated material.

Images