JP2019210024A - tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tray having higher durability than before. SOLUTION: In a tray 10 of the present invention, an inner side surface 20S of a storage recess 20 is positioned on a positioning inner side surface 21 that abuts or adjoins a side surface of a load 90, and a bulge bulging laterally from the positioning inner side surface 21. And an inner surface 22. Of the corners between the bottom surface of the accommodation recess 20 and the inner side surface 20S, the corners of the positioning inner side surface 21 and the bottom surface that may interfere with the lower surface outer edge portion of the luggage 90 do not have chamfered surfaces, and the luggage 90 A chamfered surface 43 is provided at a corner between the bulged inner side surface 22 and the bottom surface that cannot interfere with the outer edge portion of the lower surface. As a result, the durability of the tray 10 is improved due to the relaxation of stress concentration and the effect of increasing the thickness due to the formation of the chamfered surface 43 while realizing the stable accommodation and positioning of the load 90. Moreover, since the escape groove 40 is formed in the outer edge portion of the bottom surface 30 along the positioning inner side surface 21, it is possible to reliably prevent interference with the lower edge portion of the luggage 90. [Selection diagram] Fig. 4

Description

  The present disclosure relates to a resin tray including a plurality of storage recesses for storing luggage.

  Conventionally, as this type of tray, one in which a load is fitted and positioned in an accommodation recess is known (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 61-60452 (FIG. 1)

  However, in the conventional tray, the outer edge portion of the bottom surface of the housing recess is cracked, and the bottom of the housing recess may eventually fall off with the load. On the other hand, development of a tray having higher durability than before has been demanded.

  The invention of claim 1, which has been made to solve the above-mentioned problems, is a resin tray having a housing recess for housing a load, wherein the housing recess has a positioning inner side surface that is in contact with or adjacent to a side surface of the load. Formed on the bulging inner side surface that bulges laterally from the positioning inner side surface and the outer edge portion along the positioning inner side surface of the bottom surface of the housing recess to avoid interference with the lower outer edge portion of the luggage And a chamfered surface formed at a corner between the bottom surface and the bulging inner side surface.

  According to a second aspect of the present invention, as the chamfered surface is formed, the side surface on the positioning inner side surface of the thickening portion provided at the corner between the bottom surface and the bulging inner side surface gradually increases as it approaches the luggage side. The tray according to claim 1, wherein the tray has an inclined surface that becomes lower.

  The invention according to claim 3 is the tray according to claim 1 or 2, wherein the bulging inner side surface bulges from a plurality of locations on the positioning inner side surface.

  According to a fourth aspect of the present invention, a plurality of the accommodating recesses are provided and arranged in a matrix, and at least one of the combinations of the accommodating recesses adjacent in the row direction and the column direction is at least one of the bulges. The tray according to claim 3, wherein an inner surface is included.

  In the tray according to the first aspect, the inner side surface of the housing recess includes a positioning inner side surface that is in contact with or adjacent to the side surface of the load, and a bulging inner side surface that bulges laterally from the positioning inner side surface. Of the corners between the bottom surface and the inner side surface of the housing recess, the corners between the positioning inner side surface and the bottom surface that can interfere with the lower surface outer edge portion of the luggage do not have a chamfered surface, A chamfered surface is provided at the corner between the bulging inner surface and the bottom surface that cannot interfere with each other. Thereby, while realizing stable accommodation and positioning of the load, the durability of the tray is improved by the relaxation of the stress concentration due to the formation of the chamfered surface and the thickening effect. And since the escape groove is formed in the outer edge part along the positioning inner side surface among bottom faces, interference with the lower surface outer edge part of a load can be prevented reliably.

  In addition, if the groove bottom surface of the escape groove is a curved surface, stress concentration is prevented and the durability is improved as compared with the case where the corner portion between the positioning inner side surface and the bottom surface is a pin angle shape.

  In the tray of claim 2, since the side surface of the thickened portion formed along with the chamfered surface is an inclined surface, no pin corner portion is formed between the side surface of the thickened portion and the bottom surface of the housing recess. Also in this respect, stress concentration is relaxed and durability is improved.

  In the tray according to claim 3, the bulging inner surface having a chamfered surface between the bottom surface and the bottom surface is arranged at a plurality of positions on the positioning inner surface not having the chamfered surface, and the positioning inner surface is divided so as to be loaded. Is distributed.

  In the tray according to the fourth aspect, the bulging inner side surface is included in at least one of the facing portions of all the accommodating recesses adjacent to each other. As a result, a low-strength portion in which a chamfered surface cannot be provided at the corner portion between the bottom surface and the inner side surface of the housing recess, and a high-strength portion in which a chamfered surface can be provided are located at the opposing portions of all adjacent housing recesses. The tray is mixed and reinforced with a chamfered surface in a balanced manner.

A perspective view of a tray according to an embodiment of the present disclosure Perspective view of multiple trays stacked with luggage Top view of receiving recess Perspective view of receiving recess FIG. 3 is a side sectional view of the A-A fractured surface of FIG. FIG. 3 is a side sectional view of the BB fracture surface of FIG. Side sectional view of the corner between the bottom surface and the inner surface of the housing recess

  Hereinafter, an embodiment of the tray 10 shown in FIGS. 1 to 7 will be described. The tray 10 of the present embodiment is, for example, a molded product of foaming resin, and has a substantially square plate shape as shown in FIG. Corner slopes 11 are formed at the four corners of the tray 10 by cutting the corners obliquely. Further, the pair of side surfaces 12 and 12 facing each other of the tray 10 is formed with a recess 13 by recessing the positions near both ends from the side in a stepped manner. Further, a triangular mark 14 is engraved at the center of the outer edge portion on the side surface 12 side of the upper surface of the tray 10.

  The tray 10 is formed with a plurality of receiving recesses 20 that are open on the upper surface in a matrix. As shown in FIG. 5, these accommodating recesses 20 have a depth of ½ to 4/5 of the thickness of the tray 10. The inner side surface 20 </ b> S of the housing recess 20 is substantially perpendicular to the upper surface of the tray 10, and the bottom surface 30 of the housing recess 20 is substantially parallel to the upper surface of the tray 10.

  As shown in FIG. 4, the inner side surface 20 </ b> S of the housing recess 20 includes a cylindrical positioning inner side surface 21 and a plurality of bulging inner side surfaces 22 that swell laterally from the positioning inner side surface 21. . Then, as shown in FIG. 2, a cylindrical or columnar load 90 is accommodated in the first area R <b> 1 surrounded by the positioning inner side surface 21 of the accommodation recess 20, and is surrounded by each bulging inner side surface 22. The luggage 90 is not accommodated in the second area R2.

  Specifically, as shown in FIG. 3, the bulging inner side surface 22 has two positions 180 ° apart in the circumferential direction of the positioning inner side surface 21 and the center of one arc portion sandwiched between the two positions. And is arranged. Further, each bulging inner side surface 22 has a substantially quadrangular shape that is symmetrical with respect to a center line CL2 orthogonal to the central axis J1 of the first area R1, and as shown in FIG. A pair of facing surfaces 22A and 22A parallel to the center line CL2 (see FIG. 3) and a back surface 22B orthogonal to the center line CL2 are included.

  Hereinafter, when the bulging inner side surfaces 22 are distinguished from each other, the bulging inner side surfaces 22 and 22 arranged at two opposing positions are referred to as “first bulging inner side surfaces 22 and 22”, and the central bulging surfaces thereof are referred to as “bulging inner side surfaces 22 and 22”. The exit inner surface 22 is referred to as a “second bulging inner surface 22”. When the bulging inner side surfaces 22 are not distinguished from each other, they are referred to as “first and second bulging inner side surfaces 22” or simply “bulging inner side surfaces 22”. Further, in the present disclosure, “chamfering” has the same meaning as general “chamfering”, and is an inclined plane that obliquely intersects these two planes at a corner where two adjacent planes intersect, or those 2 It refers to forming a circular arc surface continuous with two planes, such an inclined plane is referred to as a “C chamfered surface”, and an “arc chamfered surface” is referred to as an “R chamfered surface”. The “C chamfered surface” and the “R chamfered surface” are simply referred to as “chamfered surface”.

  As shown in FIG. 4, the first bulging inner surface 22, 22 has an opening width 3 to 5 times and a depth 1.5 to 3 times that of the second bulging inner surface 22. There is no. Further, a C chamfered surface 22C is formed at a corner between the opposing surfaces 22A, 22A and the back surface 22B of the first bulging inner side surface 22. On the other hand, an R chamfered surface 22D is formed at the corner between the opposing surfaces 22A, 22A and the back surface 22B of the second bulging inner surface 22. Further, R chamfered surfaces 22E are provided at the corners between both side portions 22A, 22A of the first and second bulging inner side surfaces 22 and the positioning inner side surface 21, respectively. Further, an R chamfered surface 20 </ b> A is formed at a corner portion between the entire inner side surface 20 </ b> S of the accommodating recess 20 and the upper surface of the tray 10.

  The bottom surface 30 of the housing recess 20 is continuous with the first area R1 and each second area R2. Moreover, the long hole 31 has penetrated in the center part of 1st area R1. The long hole 31 has an elongated rectangular shape, and the longitudinal direction thereof is directed to a direction rotated by 45 ° with respect to the opposing direction of the first bulging inner side surfaces 22 and 22. In addition, an R chamfered surface 31 </ b> A is formed at a corner where the inner surface of the long hole 31 and the bottom surface 30 intersect.

  As shown in FIG. 1, in all the receiving recesses 20 of the tray 10, the longitudinal direction of the long hole 31 is parallel to the side surfaces 12 and 12, and the second bulging inner side surface 22 bulges in the same direction. Are arranged to be. As a result, as shown in FIG. 3, in the row direction and the column direction (vertical direction and horizontal direction in FIG. 3) of the arrangement of the accommodating recesses 20, it swells in at least one of the opposing portions of all adjacent pairs of the accommodating recesses 20. An exit / inside surface 22 is included.

  As shown in FIG. 4, a relief groove 40 is formed in the outer edge portion of the bottom surface 30 along the positioning inner side surface 21. As shown in FIG. 7A, the escape groove 40 includes a first groove side face 40A continuous with the positioning inner side face 21, a second groove side face 40B facing from the inside, a first groove side face 40A and a second groove side. It has a curved groove bottom surface 40C that communicates with the groove side surface 40B. An R chamfered surface 40D is formed at the corner between the second groove side surface 40B and the bottom surface 30. As shown in FIG. 4, the relief groove 40 is slightly extended from the outer edge portion along the positioning inner side surface 21 of the bottom surface 30 to a position before the R chamfered surface 22 </ b> E.

  As shown in FIG. 4, a chamfered surface 43 is formed at the corner between the bottom surface 30 and the bulging inner side surface 22. The chamfered surface 43 is, for example, an “R chamfered surface”, but may be a “C chamfered surface”. Further, as shown in FIG. 7B, the side surface on the positioning inner side surface 21 side of the thickened portion 70 formed between the bottom surface 30 and the bulging inner side surface 22 by forming the chamfered surface 43. Is an inclined surface 44 inclined toward the first area R1. More specifically, the side surface of the thickened portion 70 when the inclined surface 44 is not used is the side portion 22A and the R chamfered surface of the bulging inner side surface 22 as indicated by reference numeral 70A in FIG. Located at the boundary 22K with 22E, the corner between the side surface (70A) of the thickened portion 70 and the bottom surface 30 has a so-called pin angle shape. In order to avoid this, the side surface of the thickened portion 70 is an inclined surface 44.

  This completes the description of the structure of the tray 10 of the present embodiment. Next, the effect of this embodiment is demonstrated. The tray 10 is placed on a pallet (not shown), and is positioned by, for example, engaging the concave portions 13 with a plurality of support columns standing up from the pallet. Then, as shown in FIG. 2, the luggage 90 is accommodated in each accommodation recess 20 of the tray 10, and the upper part of the luggage 90 is projected from the upper surface of the tray 10.

  When the luggage 90 is accommodated in all the accommodating recesses 20 of the tray 10, another tray 10 is placed thereon, and the luggage 90 is accommodated in the tray 10. In this way, the plurality of trays 10 containing the luggage 90 are stacked. These trays 10 are transported together with the pallets by a forklift, and further mounted on a truck and transported far away. At that time, the tray 10 functions as a cushioning material, and damage to the luggage 90 is prevented.

  Here, in the tray 10 of the present embodiment, the inner side surface 20S of the housing recess 20 is in contact with or adjacent to the side surface of the luggage 90, and the bulge bulging sideways from the positioning inner side surface 21. And an inner side surface 22. The luggage 90 is accommodated in the first area R1 surrounded by the positioning inner side surface 21, and the luggage 90 is not accommodated in the second area R2 surrounded by the bulging inner side surface 22. When loading / unloading the luggage 90, the luggage 90 can be supported by entering a tool or a hand into the second area R2. Thereby, the luggage 90 can be easily taken in and out of the accommodation recess 20.

  Of the corners between the bottom surface 30 and the inner side surface 20 </ b> S of the housing recess 20, the corners between the positioning inner side surface 21 and the bottom surface 30 that can interfere with the outer edge of the lower surface of the luggage 90 are not provided with the chamfered surface 43. A chamfered surface 43 is provided at the corner between the bulging inner side surface 22 and the bottom surface 30 that cannot interfere with the outer edge of the lower surface of the luggage 90. Thereby, the durability of the tray 10 is improved by the relaxation of the stress concentration and the thickening effect due to the formation of the chamfered surface 43 while realizing stable accommodation and positioning of the luggage 90. Moreover, since the escape groove 40 is formed in the outer edge portion of the bottom surface 30 along the positioning inner side surface 21, interference with the lower edge portion of the luggage 90 can be reliably prevented. Further, since the groove bottom surface 40C of the relief groove 40 is curved, stress concentration is prevented compared to the case where the corner portions of the positioning inner side surface 21 and the bottom surface 30 are pin-shaped, and this point is also durable. improves.

  Further, as shown in FIG. 7 (B), the side surface of the thickened portion 70 formed at the corner portion of the bottom surface 30 and the bulging inner side surface 22 along with the formation of the chamfered surface 43 is changed to the inclined surface 44 to increase the surface. Since the pin corner portion is not formed between the side surface of the meat portion 70 and the bottom surface 30 of the housing recess 20, stress concentration is also reduced in this respect.

  Further, the bulging inner side surface 22 having the chamfered surface 43 between the bottom surface 30 is arranged at a plurality of positions of the positioning inner side surface 21 having no chamfered surface, and the positioning inner side surface 21 is divided so that the load is reduced. Distributed. In addition, as shown in FIG. 3, since the bulging inner side surface 22 is included in at least one of the facing portions of all the adjacent housing recesses 20, the low strength portion having no chamfered surface and the chamfered surface 43 are provided. The high-strength portion is mixed and reinforced in a balanced manner in the facing portions of all the adjacent housing recesses 20. These also improve the durability of the tray 10.

[Other Embodiments]
(1) The tray 10 of the above embodiment is a molded product of foaming resin, but a tray that is an injection molded product or a vacuum molded product may have the same structure as the tray 10 of the above embodiment.

  (2) In the tray 10 of the above embodiment, the bulging inner side surface 22 bulges from a plurality of positions of the positioning inner side surface 21 of each receiving recess 20, but the bulging inner side surface from one place of the positioning inner side surface 21. It is good also as a structure which 22 expanded.

  (3) Although the tray 10 of the embodiment includes the plurality of receiving recesses 20, the tray 10 may include only one receiving recess 20.

  (4) In the housing recess 20 of the above embodiment, the planar shape of the first area R1 surrounded by the positioning inner side surface 21 is circular, and the planar shape of the second area R2 surrounded by the bulging inner side surface 22 is approximately. Although it was a quadrangle, it is not limited to these shapes, The planar shape of the first area R1 and the second area R2 may be, for example, an ellipse, an oval, a polygon, or other different shapes.

DESCRIPTION OF SYMBOLS 10 tray 11 corner slope 20 accommodation recessed part 20S inner side surface 21 positioning inner side surface 22 bulging inner side surface 30 bottom face 40 escape groove 43 chamfering surface 44 inclined surface 70 thickening part 90 luggage

Claims (4)

In a resin tray with a storage recess for storing luggage,
In the housing recess,
A positioning inner side that abuts or is adjacent to the side of the load;
A bulging inner surface that bulges laterally from the positioning inner surface;
An escape groove formed on an outer edge portion of the bottom surface of the housing recess along the positioning inner side surface to avoid interference with the lower surface outer edge portion of the luggage,
A tray provided with a chamfered surface formed at a corner of the bottom surface and the bulging inner surface.   Due to the formation of the chamfered surface, the side surface on the positioning inner side surface of the thickened portion provided at the corner between the bottom surface and the bulging inner side surface becomes an inclined surface that gradually decreases as it approaches the luggage side. The tray according to claim 1.   The tray according to claim 1 or 2, wherein the bulging inner surface bulges from a plurality of locations on the positioning inner surface.   A plurality of the accommodating recesses are provided and arranged in a matrix, and at least one of the opposing portions of the accommodating recesses adjacent to each other in the row direction and the column direction includes the bulging inner surface. The tray according to claim 3.

Images