JP2015063334A - Storage case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage case which effectively inhibits a stored sheet member from bouncing up from a placement surface and being damaged.SOLUTION: Storage cases 1 are stacked to be used. Each storage case 1 includes: a placement part 10 having a front surface 11 including a placement surface 11a on which a sheet member 90 is placed and a rear surface 12 facing the front surface 11; a front frame part 20 which is provided on the front surface 11 side of the placement part 10 and forms a storage space 21 for storing the sheet member 90; and a bouncing prevention structure 30 which protrudes from the rear surface 12 of the placement part 10. When one storage case 1 is stacked on another storage case 1, the bouncing prevention structure 30 of the one storage case 1 is inserted into the storage space 21 of another storage case 1 and a tip 32 of the bouncing prevention structure 30 of the one storage case 1 faces the placement surface 11a of another storage case 1 and separates from the placement surface 11a.

Description

  The present invention relates to a storage case that stores sheet members, and more particularly to a storage case that is used in a stacked manner.

  As an example of a sheet member, a Fresnel lens sheet in which a lens surface is divided into a plurality of portions and arranged is widely used. This Fresnel lens sheet is accommodated in a storage case and transported. FIG. 13 is a sectional view showing a housing case for housing a conventional Fresnel lens sheet. As shown in FIG. 13, the housing case 501 is provided on the surface 511 side of the mounting portion 510, the mounting portion 510 having a surface 511 having a mounting surface 511 a on which the Fresnel lens sheet 590 is mounted. A front frame portion 520 that surrounds the accommodation space 521 that accommodates the lens sheet 590. Typically, one Fresnel lens sheet 590 is accommodated in the accommodation space 521 of the accommodation case 501. In order to efficiently transport many Fresnel lens sheets 590, a plurality of housing cases 501 housing the Fresnel lens sheets 590 are stacked on each other.

  However, the Fresnel lens sheet 590 as a sheet member jumps up from the mounting surface 511a of the housing case 501 due to vibrations transmitted to the housing case during transportation, and the lens surface of the Fresnel lens sheet 590 is crushed or the Fresnel lens sheet 590 There was a problem that the surface was scratched.

  This invention is made in view of such a point, Comprising: It aims at providing the storage case which can suppress effectively that the sheet | seat member accommodated is damaged by jumping up from a mounting surface. To do.

The storage case according to the present invention is a storage case used in a stack,
A housing case body for housing the sheet member;
The housing case body is
A mounting portion having a front surface having a mounting surface on which the sheet member is mounted; and a back surface facing the front surface;
A front frame portion that is provided on the front surface side of the mounting portion and forms an accommodation space for accommodating the sheet member;
A jump-up preventing structure projecting from the back surface of the mounting portion;
Have
When the storage case body of one storage case is stacked on the storage case body of another storage case, the jumping prevention structure of one storage case is inserted into the storage space of the other storage case In addition, the tip of the jumping prevention structure of one storage case faces the mounting surface of the other storage case and is separated from the mounting surface.

  In the storage case according to the present invention, when the storage case main body of one storage case is stacked on the storage case main body of the other storage case, A portion of the storage case inserted into the storage space is in contact with the front frame portion of the other storage case, so that the lateral movement of one storage case and the other storage case can be restricted. May be.

In the storage case according to the present invention, the storage case main body further includes a back frame portion provided on the back side of the mounting portion so as to surround the jump prevention structure,
The front frame portion and the back frame portion may overlap at least partially when viewed from the normal direction to the placement surface.

  The storage case by this invention WHEREIN: The said back frame edge part may be spaced apart from the edge part of the said back surface of the said mounting part, and may be arrange | positioned.

In the storage case according to the present invention, the jump prevention structure is disposed adjacent to the back frame portion,
The jump prevention structure may be joined to a side surface of the back frame portion.

  In the storage case according to the present invention, the front frame frame portion extends along a rectangular outline when viewed from the normal direction to the placement surface, and the jump prevention structure is formed on at least a part of the rectangular side. There may be a leap-preventing element extending along.

In the storage case according to the present invention, the leap prevention structure includes a plurality of the leap prevention elements,
The plurality of jump prevention elements include a first jump prevention element arranged along one side of the rectangle, and a second jump prevention element arranged along another side facing the one side of the rectangle. And a top prevention element.

  In the housing case according to the present invention, the plurality of jump prevention elements include a third jump prevention element disposed along one side orthogonal to one side of the rectangle, and a right angle to one side of the rectangle. And a fourth leap prevention element disposed along the other side.

  In the storage case according to the present invention, the jump prevention element may be disposed in a region including a position that becomes a corner of the rectangle when viewed from the normal direction to the placement surface.

  In the storage case according to the present invention, when the storage case main body of one storage case is stacked on the storage case main body of the other storage case, the tip of the jump prevention structure and the other storage case of the one storage case The clearance gap between said mounting surface may be larger than 1.0 mm and 4.0 mm or less.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress effectively that the sheet | seat member accommodated is damaged by jumping up from a mounting surface.

FIG. 1 is a plan view showing a storage case according to an embodiment of the present invention. 2 is a bottom view of the housing case shown in FIG. FIG. 3 is a cross-sectional view showing a cross section of the housing case along the line III-III in FIG. 2. FIG. 4 is a cross-sectional view illustrating a state in which the storage cases illustrated in FIG. 1 are stacked. FIG. 5 is a partially enlarged view showing an A portion of FIG. 2 in an enlarged manner. FIGS. 6A to 6F are cross-sectional views showing the jumping prevention structure shown in FIG. 3 in an enlarged manner, and are diagrams for explaining an example of the shape of the tip of the jumping prevention structure. It is. FIG. 7 is a cross-sectional view showing an example of a Fresnel lens sheet housed in a housing case. FIG. 8 is a view corresponding to FIG. 2 and a bottom view showing another arrangement example of the jump prevention structure. FIG. 9 is a view corresponding to FIG. 2, and is a bottom view showing still another arrangement example of the jump prevention structure. FIG. 10 is a diagram corresponding to FIG. 1, and is a plan view illustrating dimensions of the storage case according to the embodiment. FIG. 11 is a view corresponding to FIG. 2, and is a bottom view showing dimensions of the storage case according to the embodiment. FIG. 12 is a diagram corresponding to FIG. 3, and is a cross-sectional view illustrating dimensions of the storage case according to the embodiment. FIG. 13 is a cross-sectional view showing an example of a conventional storage case.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings attached to the present specification, for the sake of illustration and ease of understanding, the scale, the vertical / horizontal dimension ratio, and the like are appropriately changed and exaggerated from those of the actual product. 1 to 6 are views for explaining a storage case according to an embodiment of the present invention. FIG. 7 is a cross-sectional view illustrating an example of a sheet member accommodated in the accommodation case. First, a Fresnel lens sheet will be described with reference to FIG. 7 as an example of a sheet member housed in a housing case.

  As shown in FIG. 7, the Fresnel lens sheet 90 as a sheet member includes a sheet-like base material 91 and a lens layer 92 provided on the observation side of the base material 91. In the illustrated example, the observation side surface of the lens layer 92 forms a Fresnel lens surface 93, and the base material 91 forms a light incident side surface.

  The Fresnel lens surface 93 of the lens layer 92 constitutes a circular Fresnel lens or a linear Fresnel lens. The Fresnel lens surface 93 constituting the linear Fresnel lens has lens surfaces 94 arranged in a stripe shape. As shown in FIG. 7, the lens surfaces 94 in this example are arranged in an arrangement direction M that extends parallel to the sheet surface 90 a of the Fresnel lens sheet 90. In the Fresnel lens surface 93 constituting the linear Fresnel lens, each lens surface 94 extends in a direction orthogonal to the arrangement direction M. On the other hand, the Fresnel lens surface constituting the circular Fresnel lens has lens surfaces arranged concentrically. The lens surfaces in this example are arranged in an arrangement direction that passes through the center of the concentric circle and extends parallel to the sheet surface of the Fresnel lens sheet.

  In the present specification, terms such as “sheet”, “film”, and “plate” are not distinguished from each other only based on the difference in names. Therefore, for example, a “sheet” is a concept including a member that can also be called a film or a plate. As a specific example, the “sheet member” includes members called “film member”, “plate member”, and the like.

  In this specification, “sheet surface (film surface, plate surface)” is the same as the planar direction of the target sheet-like member when the target sheet-like member is viewed as a whole and globally. It refers to the surface to be used. In the present embodiment, the sheet surface 90a of the Fresnel lens sheet 90 and the sheet surface of the substrate 91 are parallel to each other. In the following description, as shown in FIG. 7, the surface constituting the most light incident side surface of the base material 91 will be described as an example of the sheet surface 90 a of the Fresnel lens sheet 90.

  The Fresnel lens surface 93 exerts a certain optical action on incident light by a combination of a plurality of lens surfaces 94. The angle formed by the lens surface 94 with respect to the normal direction ND with respect to the sheet surface 90a of the Fresnel lens sheet 90 varies depending on the arrangement position of the lens surface 94 along the arrangement direction M. In the present embodiment, the inclination angle of the lens surface 94 with respect to the normal direction ND gradually decreases from the center side in the arrangement direction M of the lens surfaces 94 to the outside.

  A rise surface 95 is provided between two adjacent lens surfaces 94. Among the plurality of rise surfaces 95, the rise surface 95 arranged on the outer side in the arrangement direction M has a longer length along the normal direction ND. The rise surface 95 is a surface on which no lens action of light is expected.

  In addition, a top portion 96 that protrudes outward in the normal direction ND is defined in a boundary region between the lens surface 94 and the rise surface 95. As the inclination angle of the lens surface 94 with respect to the normal direction ND decreases in order from the center side in the arrangement direction of the lens surfaces 94 to the outside, the angle formed by the lens surface 94 and the rise surface 95 at the apex 96 is as follows. It gets sharper.

  As a material constituting such a base material 91, for example, a PET film, an acrylic resin film, or a polycarbonate film can be used. On the other hand, as a resin material for forming the lens layer 92 laminated on the base material 91, for example, an acrylate resin such as urethane acrylate or epoxy acrylate is preferably used. As an example, the refractive index of the resin material constituting the lens layer 92 is adjusted to about 1.55 to 1.65.

  Next, mainly with reference to FIG. 1 thru | or FIG. 6, the storage case 1 which packages the sheet | seat member 90 which consists of the above Fresnel lens sheets is demonstrated. 1 and 2 are a plan view and a bottom view, respectively, showing a housing case 1 according to an embodiment of the present invention. FIG. 3 is a cross-sectional view showing a cross section of the housing case 1 along the line III-III in FIG. 2. FIG. 4 is a cross-sectional view illustrating a state in which the storage cases illustrated in FIG. 1 are stacked.

  The storage cases 1 are suitable for being stacked on each other. As shown in FIGS. 1 to 3, the storage case 1 includes a storage case body 2 that stores a sheet-like sheet member 90. When a plurality of storage cases 1 are stacked, the storage case body 2 of one storage case 1 comes into contact with the storage case body 2 of another storage case 1. The storage case main body 2 of the present embodiment includes a mounting portion 10 having a front surface 11 having a mounting surface 11a on which a sheet-like sheet member 90 is mounted and a rear surface 12 facing the front surface 11, and a mounting portion. 10 and includes a front frame portion 20 that forms an accommodation space 21 that accommodates the sheet member 90, and a back frame portion 40 that is provided on the back surface 12 side of the placement portion 10. .

  As shown in FIG.1 and FIG.2, the mounting part 10 consists of flat form. In the present embodiment, the placement unit 10 has a substantially quadrangular shape, more precisely a substantially rectangular outline, when viewed from the normal direction nd to the placement surface 11a.

  The placement surface 11 a of the placement unit 10 has a shape along the surface of the sheet member 90. In the present embodiment, since the sheet member 90 has a flat shape, the mounting surface 11a of the mounting unit 10 is also flat.

  As shown in FIG. 1, the front frame portion 20 extends circumferentially along the periphery of the placement portion 10. Specifically, the front frame portion 20 extends along a rectangular outline as viewed from the normal direction nd to the placement surface 11a. Then, an accommodation space 21 for accommodating the sheet member 90 is formed in the space surrounded by the front frame portion 20. Therefore, when the size of the space surrounded by the front frame portion 20 and the size of the sheet member 90 to be accommodated are substantially equal, by using the front frame portion 20, the sheet member 90 with respect to the accommodation case 1 is used. Deviation can be effectively controlled. Typically, the gap between the front frame portion 20 and the sheet member 90 is set to about 5 mm to 10 mm.

  As shown in FIG. 3, the front frame portion 20 includes a bottom surface 22 facing the mounting portion 10 side, and a top surface 23 facing the bottom surface 22 and facing the opposite side of the mounting portion 10. Among these, the bottom surface 22 of the front frame portion 20 is fixed to the placement portion 10. For example, the bottom surface 22 of the front frame portion 20 may be bonded to the mounting portion 10 via an adhesive or may be formed integrally with the mounting portion 10.

  On the other hand, as shown in FIG. 4, the top surface 23 of the front frame portion 20 abuts against the back frame portion 40 of the storage case main body 2 of the other storage case 1 stacked on the storage case 1. The case 1 is supported from below. In the present embodiment, the top surface 23 of the front frame portion 20 is formed in a flat shape. Thereby, the other storage cases 1 stacked on the storage case 1 can be stably supported.

  Further, as shown in FIG. 1, the front frame portion 20 includes an inner side surface 24 and an outer side surface 25 that respectively extend between the bottom surface 22 and the top surface 23. The inner surface 24 faces the accommodation space 21. The outer side surface 25 faces the inner side surface 24, and is away from the accommodating space 21 than the inner side surface 24 and faces outward. That is, the outer surface 25 is located on the outer side than the inner surface 24.

  As shown in FIG. 1, the inner surface 24 of the front frame portion 20 is provided with a recess 50 that is recessed from the other portions. Specifically, the concave portion 50 extends from the inner side surface 24 of the front frame portion 20 toward the outer side surface 25 and is separated from the outer side surface 25. That is, the recess 50 is separated from the outer surface 25 of the front frame portion 20 and does not extend to the outer surface 25. Thereby, the rigidity of the circumference | surroundings of the part in which the recessed part 50 was formed among the front frame parts 20 can be ensured, and the storage case 1 can be piled up stably.

  The recess 50 communicates with the accommodation space 21 so that the operator's finger can be inserted. By inserting a finger into the recess 50 and applying a finger from the side to the sheet member 90 on the placement surface 11a, the periphery of the sheet member 90 can be easily lifted from the placement surface 11a, and the sheet member 90 is The storage space 21 can be easily taken out.

  Moreover, the recessed part 50 is extended from the bottom face 22 of the front frame part 20 to the top face 23 along the normal direction nd with respect to the mounting surface 11a, and forms the opening in each surface. The opening formed in the bottom surface 22 by the recess 50 is covered by the surface 11 of the placement unit 10. On the other hand, the opening 51 formed in the top surface 23 by the recess 50 is at least partially covered by the back picture frame portion 40 of the other storage case 1 stacked on the storage case 1 as described later. ing.

  The recessed part 50 of this Embodiment is provided in each of two area | regions where the front frame part 20 mutually opposes. As described above, the front frame portion 20 is arranged along a rectangular outline when viewed from the normal direction nd to the placement surface 11a. In this case, the recess 50 is positioned along each of the two regions of the front frame portion 20 positioned along a pair of rectangular short sides forming the front frame portion 20 and along the pair of long sides of the rectangle. In each of the two regions of the front frame portion 20, four concave portions 50 are formed in the front frame portion 20 in total.

  As an example, the depth of each recess 50 in the direction away from the accommodation space 21, in other words, the depth in the direction from the inner surface 24 to the outer surface 25 of the front frame portion 20 is set to 15 mm or more and 80 mm or less. Is done. When the depth of each recess 50 in the direction away from the accommodation space 21 is 15 mm or more, it becomes easy to insert a finger into the recess 50 and workability is improved. As an example, the width of each recess 50 in the direction along the inner side surface 24 of the front frame portion 20, in other words, the width along the direction perpendicular to the direction away from the accommodation space 21 is 600 mm or more and 1000 mm or less. Is set.

  Next, the back frame part 40 provided in the back surface 12 side of the mounting part 10 is demonstrated. As shown in FIG. 2, the back frame portion 40 extends circumferentially along the periphery of the placement portion 10. Specifically, the back frame portion 40 extends along a rectangular outline when viewed from the normal direction nd to the placement surface 11a. As shown in FIG. 4, the front frame portion 20 and the back frame portion 40 overlap at least partially when viewed from the normal direction nd with respect to the placement surface 11 a. Thereby, the back frame part 40 of the storage case 1 will contact | abut the front frame part 20 of the other storage case 1 in which the said storage case 1 was piled up. In the illustrated example, the back frame portion 40 is disposed in a region overlapping the front frame portion 20 when viewed from the normal direction nd with respect to the placement surface 11a.

  As shown in FIG. 3, the back frame portion 40 includes a bottom surface 42 facing the placement unit 10 and a top surface 43 facing the bottom surface 42 and facing the opposite side of the placement unit 10. Among these, the bottom surface 42 of the back frame portion 40 is fixed to the placement portion 10. For example, the bottom surface 42 of the back frame portion 40 may be bonded to the mounting portion 10 with an adhesive or may be formed integrally with the mounting portion 10.

  On the other hand, the top surface 43 of the back frame portion 40 comes into contact with the front frame portion 20 of the storage case body 2 of another storage case 1 in which the storage cases 1 are stacked. For this reason, the top surface 43 of the back frame portion 40 has a shape complementary to the top surface 23 of the front frame portion 20. As a result, the top surface 43 of the back frame portion 40 of the storage case 1 is in contact with the top surface 23 of the front frame portion 20 of the other storage case 1 in which the storage case 1 is stacked in a balanced manner and stacked together. The housing case 1 is stably supported. As described above, the top surface 23 of the front frame portion 20 is formed in a flat shape. For this reason, the top surface 43 of the back frame 40 is also formed flat.

  Further, as shown in FIG. 2, the back frame portion 40 includes an inner side surface 44 and an outer side surface 45 that extend between the bottom surface 42 and the top surface 43, respectively. The inner side surface 44 faces the same side as the inner side surface 24 of the front frame portion 20, that is, the inner side. The outer side surface 45 faces the inner side surface 44 and is located on the outer side with respect to the inner side surface 44. The inner side surface 44 and the outer side surface 45 have a rectangular outline when viewed from the normal direction nd to the placement surface 11a.

  In addition, in the example shown in FIG. 2, although the example where the back frame part 40 was connected in the periphery shape was shown, it is not restricted to this. For example, the back frame portion 40 may be partially disposed on the periphery of the placement portion 10. Specifically, a pair of back frame portions respectively disposed along a pair of opposing edges of the mounting portion 10 having a rectangular shape as viewed from the normal direction nd with respect to the mounting surface 11a can be employed. . In addition, it is possible to employ four back frame portions respectively arranged at the four corners of the mounting portion 10 having a rectangular shape when viewed from the normal direction nd with respect to the mounting surface 11a.

  As shown in FIG. 2, the housing case body 2 has a jump prevention structure 30 that protrudes from the back surface 12 of the mounting portion 10. As shown in FIG. 4, the jump-up preventing structure 30 is inserted into a storage space 21 surrounded by a front frame portion 20 of another storage case 1 in which the storage cases 1 are stacked. Yes. Thereby, the movement range of the jumping prevention structure 30 of the storage case 1 positioned above is limited by the front frame portion 20 of the other storage case 1. As a result, the relative movement of the stacked storage cases 1 to the side is restricted. In addition, the tip 32 of the leap prevention structure 30 faces the placement surface 11a of the other storage case 1 and is separated from the placement surface 11a by at least the thickness of the sheet member 90. Yes. Accordingly, when the plurality of storage cases 1 storing the sheet members 90 are stacked and transported, the sheet member 90 jumps up from the placement surface 11a of the storage case 1 due to vibrations transmitted to the storage case 1. The jump prevention structure 30 of the storage case 1 to be suppressed can be suppressed.

  FIG. 5 is an enlarged view of the jump prevention structure 30 shown in FIG. As shown in FIG. 5, the jump prevention structure 30 protrudes from the space surrounded by the back frame portion 40 provided on the back surface 12 of the placement portion 10. In the example shown in FIG. 5, the jumping prevention structure 30 is arranged in the vicinity of the back frame portion 40. More specifically, the jump-up preventing structure 30 is disposed adjacent to the back frame portion 40.

  As described above, when viewed from the normal direction nd with respect to the placement surface 11a, the front frame portion 20 extends along a rectangular outline. In the present embodiment, when viewed from the normal direction nd with respect to the mounting surface 11a, the leap prevention structure 30 has a plurality of leap prevention elements 31 each extending along at least a portion of the corresponding side of the rectangle. doing. In the present embodiment, the plurality of jump prevention elements 31 include at least four jump prevention elements 31 respectively corresponding to the four sides of the rectangle as seen from the normal direction nd to the placement surface 11a. That is, the plurality of jump prevention elements 31 includes the first jump prevention element 31a arranged along one long side of the rectangle as viewed from the normal direction nd to the placement surface 11a, and one of the rectangles. The second jump prevention element 31b arranged along the other long side facing the long side, and the third jump prevention element arranged along one short side orthogonal to one long side of the rectangle 31c, and a fourth leap-up preventing element 31d disposed along the other short side perpendicular to one long side of the rectangle. In the illustrated example, two first to fourth jump prevention elements 31a to 31d are provided, and eight jump prevention elements 31 are provided in total.

  Moreover, as shown in FIG. 2, each jump prevention element 31 is arrange | positioned in the area | region including the position used as the corner | angular of the said rectangle seeing from the normal line direction nd with respect to the mounting surface 11a. In the present embodiment, two jump prevention elements 31 are arranged in each region including the position that becomes the corner of the rectangle. The two leap-up preventing elements 31 arranged in the respective regions including the rectangular corners extend in parallel with the two sides forming the corner.

  6A to 6F show an example of the shape of the jump prevention element 31 shown in FIG. As shown in FIG. 6, each jump prevention element 31 has a constant cross-sectional shape along the longitudinal direction extending in a plane parallel to the placement surface 11a. The jump prevention element 31 includes a head portion 33 including a tip 32 that is farthest from the back surface 12 of the mounting portion 10, a body portion 34 that is disposed between the head 33 and the back surface 12 of the mounting portion 10, and Is included. Among these, the trunk | drum 34 has a rectangular cross-sectional shape in the cross section along the normal line direction nd with respect to the mounting surface 11a shown in FIG.

  On the other hand, the head 33 of the jump prevention element 31 has a rectangular cross-sectional shape in the cross section along the normal direction nd with respect to the mounting surface 11a in the example shown in FIG. Specifically, the head 33 of the jump prevention element 31 has the same width as the body 34 in the cross section along the normal direction nd with respect to the placement surface 11 a, and is rectangular by the body 34 and the head 33. The cross-sectional shape is formed. In the example shown in FIGS. 6B to 6F, the head 33 of the jump prevention element 31 has a body portion along the normal direction nd in the cross section along the normal direction nd with respect to the placement surface 11a. As the distance from 34 increases, the taper decreases. In the example shown in FIG. 6B, the head 33 has an isosceles trapezoidal cross-sectional shape in a cross section along the normal direction nd with respect to the mounting surface 11a. In the example shown in FIG. 6C, the head 33 has a semi-elliptical cross-sectional shape in a cross section along the normal direction nd with respect to the placement surface 11a. In the example shown in FIG. 6D, the head 33 has a semicircular cross-sectional shape in a cross section along the normal direction nd with respect to the placement surface 11a. In the example shown in FIG. 6E, the head 33 has an isosceles triangular cross-sectional shape in which the apex angle is arranged at the tip 32 in the cross section along the normal direction nd with respect to the mounting surface 11a. . In the example shown in FIG. 6 (f), the head 33 has a right-triangular cross-sectional shape with the tip 32 having an acute angle in the cross-section along the normal direction nd with respect to the mounting surface 11 a.

  It should be noted that when the sheet member 90 bounced up from the mounting surface 11 a contacts the head 33 of the jump-up preventing element 31, the head 33 is placed on the head 33 so that the tip 32 on the head 33 does not damage the sheet member 90. It is preferable that a certain tip 32 has a rounded shape by chamfering or the like.

  Such a jump prevention structure 30 is fixed to the placement unit 10. For example, the jumping prevention structure 30 may be bonded to the mounting part 10 with an adhesive via a surface, or may be formed integrally with the mounting part 10. Further, in the present embodiment, the leap prevention structure 30 is disposed adjacent to the back frame 40, and the leap prevention structure 30 is joined to the inner side surface 44 of the back frame 40 by a surface. Has been. Thereby, since the leap prevention structure 30 can be fixed to two different surfaces which consist of the mounting part 10 and the back frame part 40, the leap prevention structure 30 can be fixed firmly.

  Now, in the direction along the normal direction nd with respect to the mounting surface 11a, the length of each jumping prevention element 31 constituting the jumping prevention structure 30 is the front frame portion provided on the surface 11 side of the mounting unit 10 It is designed as follows based on the length of 20 and the length of the back frame portion 40 provided on the back surface 12 side of the mounting portion 10. The tip 32 of each jump prevention element 31 constituting the jump prevention structure 30 is larger than 0 mm from the sheet member 90 placed on the placement surface 11a of the other accommodation case 1 in which the accommodation cases 1 are stacked. It has been found that it is preferable to separate them at intervals of 2.0 mm or less. A typical sheet member 90 has a thickness of about 1.0 mm to 2.0 mm. Therefore, the tip 32 of each jump prevention element 31 constituting the jump prevention structure 30 can be separated from the placement surface 11a of the other storage case 1 at an interval greater than 1.0 mm and 4.0 mm or less. preferable. According to such a form, when the sheet member 90 tries to jump up from the placement surface 11 a of the storage case 1, the jump prevention structure 30 of the storage case 1 stacked upward is lifted up of the sheet member 90. Can be effectively suppressed.

  More preferably, the tip 32 of each leap prevention element 31 constituting the leap prevention structure 30 is formed from the sheet member 90 placed on the placement surface 11a of the other accommodation case 1 in which the accommodation cases 1 are stacked. , Separated by an interval of greater than 0 mm and less than or equal to 0.5 mm. That is, more preferably, the tip 32 of each jump prevention element 31 constituting the jump prevention structure 30 is spaced from the placement surface 11a of the other storage case 1 by a distance greater than 1.0 mm and not greater than 2.5 mm. Separate. In this case, even if a large vibration is transmitted to the storage case during transportation, and the sheet member 90 jumps up from the mounting surface 11a of the storage case 1, the jump prevention structure 30 of the storage case 1 stacked on the sheet is provided. The jumping of the member 90 can be suppressed extremely effectively.

  As specific values, the length of the front frame portion 20 in the direction along the normal direction nd with respect to the mounting surface 11a is set to about 5 mm to 10 mm, and the length of the back frame portion 40 is 15 mm. It is set to about ˜25 mm. Therefore, the length of each jump prevention element 31 constituting the jump prevention structure 30 in the direction along the normal direction nd with respect to the placement surface 11a is set to about 16 mm to 34 mm as an example.

  In addition, the length in the longitudinal direction of each jump prevention element 31 in a plane parallel to the placement surface 11 a is set to about 50 mm to 200 mm as an example, and the length in the short direction of each jump prevention element 31. As an example, the thickness is set to about 5 mm to 10 mm.

  Next, the relative positions of the placing portion 10, the front frame portion 20, and the back frame portion 40 will be described. As shown in FIG. 1, the outer contour 10 a of the mounting portion 10 overlaps the outer contour 20 a of the front frame portion 20 when viewed from the normal direction nd with respect to the mounting surface 11 a. Further, as shown in FIG. 2, the outer contour 10a of the mounting portion 10 is larger than the outer contour 20a of the back frame portion 40 when viewed from the normal direction nd to the mounting surface 11a. That is, the back frame portion 40 is arranged away from the edge portion 12 a of the back surface 12 of the placement portion 10. Thereby, the edge part 12a of the back surface 12 of the mounting part 10 is exposed. For this reason, when stacking and transporting the storage case 1, it is possible to place a hand on the edge 12 a of the back surface 12 of the placement unit 10, and the storage case 1 can be transported easily. In addition, the space | interval which separates the back frame part 40 from the edge of the back surface 12 of the mounting part 10 is set to about 30 mm-50 mm, for example.

  In addition, as the dimensions of other parts, the width of the front frame portion 20, that is, the distance between the inner side surface 24 and the outer side surface 25 of the front frame portion 20, for example, is 50 mm to It is set to about 100 mm, and is set to about 15 mm to 30 mm in the portion where the recess 50 is provided. Further, the width of the back frame portion 40, that is, the distance between the inner surface 44 and the outer surface 45 of the back frame portion 40 is set to about 20 mm to 40 mm, for example.

  The mounting portion 10, the front frame portion 20, the jump prevention structure 30, and the back frame portion 40 constituting such a housing case main body 2 can be formed of the same material or different materials. Specifically, each component of the housing case body 2 can be formed from paper, resin, metal, or a composite material containing any of these. As an example, a polypropylene resin having a honeycomb structure may be used for the mounting portion 10, and a foamed polypropylene resin may be used for the front frame portion 20, the jump-up preventing structure 30, and the back frame portion 40. In this case, the rigidity required for the housing case 1 can be sufficiently secured while the housing case 1 is configured to be lightweight.

  Next, the operation of the present embodiment configured as described above will be described with reference to FIG.

  First, the sheet member 90 is placed on the placement surface 11 a of the placement portion 10 of each housing case 1. At this time, protective sheets having various functions for protecting the sheet member 90 may be laminated on both sides or any one side of the sheet member 90. As a protective sheet having such a function, for example, an interleaving paper having an impact relaxation function can be mentioned.

  Next, the plurality of storage cases 1 are stacked on each other. Specifically, the back frame portion 40 of the storage case body 2 of one storage case 1 is brought into contact with the front frame portion 20 of the storage case body 2 of the other storage case 1 and the jump of the one storage case 1 is performed. The upper prevention structure 30 is inserted into the accommodation space 21 of the other accommodation case 1. As a result, the tip 32 of the jumping prevention structure 30 of one storage case 1 faces the mounting surface 11a of the other storage case 1, and the sheet member 90 is interposed between the mounting surface 11a. It will be in the state that was made That is, the tip 32 of the jumping prevention structure 30 of one storage case 1 is separated from the placement surface 11 a of the other storage case 1 by at least the thickness of the sheet member 90.

  Further, in this state, the accommodation space 21 surrounded by the front frame portion 20 of the accommodation case 1 is covered by the back frame portion 40 and the placement portion 10 of the accommodation case 1 located above and is generally blocked from the outside. Therefore, it is possible to prevent dust, foreign matter, and the like from entering the storage space 21 in the storage case 1 during handling of the storage case 1. Thereby, it can prevent that the sheet | seat member 90 becomes dirty or deform | transforms, when dust adheres or a foreign material collides.

  Next, the stacked storage cases 1 are transported. At this time, since the back frame portion 40 is disposed away from the edge portion 12a of the back surface 12 of the mounting portion 10, the hand is applied to the edge portion 12a of the back surface 12 of the mounting portion 10 located at the lowest position. Can do. Thereby, the storage case 1 can be transported easily.

  During transportation, a vibration is transmitted to the stacked storage cases 1, and a force for shifting the stacked storage cases 1 may be applied. However, the portion inserted into the accommodation space 21 of the other accommodation case 1 located below the other part of the accommodation case 1 located below the jumping prevention structure 30 of the accommodation case 1 located above the other accommodation case 1 is located. The lateral movement of the housing case 1 positioned above and the other housing case 1 positioned below is restricted by contacting the front frame portion 20. As a result, the relative movement of the stacked storage cases 1 to the side is restricted, and the stacked storage cases 1 can be prevented from shifting.

  If vibration is transmitted to the storage case 1 during transportation, the sheet member 90 may jump up from the placement surface 11 a of the storage case 1. However, in the present embodiment, even if the sheet member 90 placed on the placement surface 11a of the storage case 1 jumps up, it is suppressed by coming into contact with the jumping prevention structure 30 of the storage case 1 located above. Thereby, it can suppress effectively that the sheet member 90 jumps up from the mounting surface 11a of a storage case, and the said sheet member 90 is damaged. In particular, in the case where the sheet member 90 is made of a Fresnel lens sheet, if the Fresnel lens sheet 90 jumps up from the mounting surface 11a of the housing case, the lens surface 94 or the top 96 of the Fresnel lens sheet 90 may be crushed, or the Fresnel lens sheet 90 There is a risk of scratching the surface. However, in the present embodiment, the jump prevention structure 30 suppresses the jumping of the Fresnel lens sheet 90 from the placement surface 11a, so that these damages can be effectively suppressed.

  When the storage case 1 is transported, the sheet member 90 stored in the storage case 1 is taken out of the storage case 1. As described above, the front frame portion 20 is provided with the recess 50 that communicates with the accommodation space 21 and into which a finger can be inserted. Therefore, by inserting a finger into the recess 50 and applying a finger from the side to the sheet member 90 on the placement surface 11a, the peripheral edge of the sheet member 90 can be easily lifted from the placement surface 11a. 90 can be easily taken out.

  As described above, according to the present embodiment, when the storage case body 2 of one storage case 1 is stacked on the storage case body 2 of another storage case 1, the one storage case 1 jumps up. The prevention structure 30 is inserted into the accommodation space 21 surrounded by the front frame portion 20 of the other accommodation case 1. Thereby, the movement range of the jumping prevention structure 30 of the storage case 1 positioned above is limited by the front frame portion 20 of the other storage case 1. As a result, the relative movement of the stacked storage cases 1 to the side is restricted. In addition, when the storage case main body 2 of one storage case 1 is stacked on the storage case main body 2 of the other storage case 1, the tip 32 of the jumping prevention structure 30 of the one storage case 1 is the other. The mounting case 1 faces the mounting surface 11a and is separated from the mounting surface 11a. According to such a form, even if the sheet member 90 accommodated in the accommodation space 21 jumps up from the placement surface 11a due to vibrations transmitted to the accommodation case 1 during transportation, the upper accommodation case 1 is prevented from jumping up. The structure 30 is abutted against and suppressed. Thereby, it can suppress effectively that the sheet member 90 jumps up from the mounting surface 11a of the storage case 1, and the said sheet member 90 is damaged.

  Further, according to the present embodiment, the housing case main body 2 further includes the back frame portion 40 on the back surface 12 side of the mounting portion 10, and the front frame portion 20 as viewed from the normal direction nd with respect to the mounting surface 11 a. And the back frame 40 overlap at least partially. In this case, the workability when the sheet member 90 is accommodated or taken out from the placement surface 11a of the placement portion 10 while ensuring the height of the placement surface 11a of the placement portion 10 high by the back frame portion 40 is improved. Can be improved.

  Further, according to the present embodiment, the jumping prevention structure 30 is disposed adjacent to the back frame part 40, and the jumping prevention structure 30 is fixed to the side surface of the back picture frame part 40. Yes. According to such a form, since the leap prevention structure 30 is also fixed to the back frame portion 40, the leap prevention structure 30 can be firmly fixed.

  Further, according to the present embodiment, the front frame portion 20 extends along a rectangular outline when viewed from the normal direction nd with respect to the placement surface 11a, and the leap-up preventing structure 30 includes the sides of the rectangle. Has a leap-preventing element 31 extending along at least a portion thereof. According to such a form, when the plurality of storage cases 1 are stacked, the jumping prevention element 31 of the storage case 1 positioned above the edge of the front frame edge 20 of the storage case 1 positioned below. Be placed. For this reason, during transportation, the jumping prevention element 31 of the upper housing case 1 can be restricted from moving beyond the edge of the front frame edge portion 20 of the lower housing case 1. That is, it is possible to restrict the upper housing case 1 from being displaced from the lower housing case 1.

  In particular, in the present embodiment, the plurality of jump prevention elements 31 are arranged on the first jump prevention element 31a arranged along one side of the rectangle and the other side facing the one side of the rectangle. And a second leap-up preventing element 31b disposed along. In this case, when a plurality of storage cases 1 are stacked, the first jump-up prevention element 31a and the second jump-up prevention element 31b of the storage case 1 positioned above are respectively the front frame edges of the storage case 1 positioned below. Arranged along a pair of 20 opposing edges. For this reason, it is possible to restrict movement of the accommodation case 1 positioned above beyond any of the pair of opposed edge portions of the front frame edge portion 20 of the accommodation case 1 positioned below. That is, it can be controlled that the storage case 1 positioned at the upper side is displaced to either side of the pair of facing edge portions 20 of the front frame edge portion 20 of the storage case 1 positioned at the lower side.

  Furthermore, in the present embodiment, the plurality of jump prevention elements 31 include the third jump prevention element 31c arranged along one side orthogonal to one side of the rectangle, and one side of the rectangle. 4th jump prevention element 31d arranged along the other side which intersects perpendicularly to. In this case, it is possible to restrict movement of the housing case 1 located above beyond any of the remaining pair of opposing edges of the front frame portion 20 of the housing case 1 located below. As a result, it is possible to prevent the upper housing case 1 from shifting in any direction within the plane parallel to the placement surface 11a with respect to the lower housing case 1.

  In addition, according to the present embodiment, when viewed from the normal direction nd with respect to the placement surface 11a, each jump prevention element 31 is disposed in a region including a position that becomes a corner of the rectangle. According to such a form, when the storage case 1 is stacked and transported, the sheet member 90 stored in the storage space 21 of the storage case 1 jumps up, so that the storage case 1 is prevented from jumping up. The body 30 can be suppressed with a good balance. For this reason, it can suppress more effectively that the sheet member 90 is damaged.

  Further, according to the present embodiment, the sheet member 90 is surrounded by the front frame portion 20, and the edge portion of the sheet member 90 is not exposed to the outside. Therefore, it is possible to prevent the edge portion of the sheet member 90 from being damaged from the outside.

  Further, according to the present embodiment, the front frame portion 20 is provided with the recess 50 that communicates with the accommodation space 21 and into which a finger can be inserted. According to such a form, by inserting a finger into the recess 50 and applying a finger from the side to the sheet member 90 on the placement surface 11a, the periphery of the sheet member 90 can be easily lifted from the placement surface 11a. Thus, the sheet member 90 can be easily taken out.

  In addition, according to the present embodiment, the recess 50 is provided in each of the two regions of the front frame portion 20 facing each other. According to such a form, by inserting a finger into each recess 50, the finger can be applied to the sheet member 90 on the placement surface 11a from two opposing sides. Thereby, the periphery of the sheet member 90 can be lifted more easily from the placement surface 11a, and the sheet member 90 can be taken out more easily.

  In addition, according to the present embodiment, the recess 50 extends to the top surface 23 facing the opposite side of the mounting portion 10 of the front frame portion 20 and forms the opening 51 on the surface. In this case, a finger can be inserted into the recess 50 from the top surface 23 side. For this reason, a finger can be easily inserted into the recess 50, and the sheet member 90 can be easily taken out from the placement surface 11a. Furthermore, when the storage case body 2 of one storage case 1 is stacked on the storage case body 2 of the other storage case 1, the opening 51 formed in the top surface 23 of the one storage case 1 The back frame 40 of the housing case 1 is at least partially covered. In this case, it is possible to effectively suppress dust, foreign matter, and the like from entering the storage space 21 in the storage case 1 through the recess 50 during handling of the storage case 1. Thereby, it can suppress effectively that the sheet | seat member 90 becomes dirty or deform | transforms, when dust adheres or a foreign material collides.

≪Modification≫
Note that various modifications can be made to the above-described embodiment. Hereinafter, an example of modification will be described with reference to the drawings. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the above embodiment are used for the parts that can be configured in the same manner as in the above embodiment. A duplicate description is omitted.

  In the above-described embodiment, as shown in FIG. 2, each jump-up prevention element 31 forming the jump-up prevention structure 30 forms the contour of the front frame portion 20 as viewed from the normal direction nd with respect to the placement surface 11 a. Although the example arranged in the area | region containing the position used as the corner | angular of a rectangle was shown, the arrangement | sequence of the jump prevention structure 30 is not limited to the arrangement | sequence mentioned above. 8 and 9 show another arrangement example of the jump prevention structure 30. FIG.

  In the example shown in FIGS. 8 and 9, the front frame portion 20 has a rectangular shape when viewed from the normal direction nd with respect to the placement surface 11a. The jump prevention structure 30 includes a plurality of jump prevention elements 31 each extending along at least a part of the corresponding side of the rectangle as seen from the normal direction nd to the placement surface 11a. The plurality of jump prevention elements 31 includes a first jump prevention element 31a disposed along one long side of the rectangle and one long side of the rectangle as viewed from the normal direction nd to the placement surface 11a. A second leap-up preventing element 31b arranged along the other long side opposite to the third, and a third leap-up preventing element 31c arranged along one short side orthogonal to one long side of the rectangle; And a fourth leap-up preventing element 31d disposed along the other short side orthogonal to one long side of the rectangle. In the illustrated example, the first to fourth jump prevention elements 31a to 31d are arranged one by one, and four jump prevention elements 31 are provided in total. In the illustrated example, four jump prevention elements 31 are arranged, but only two jump prevention elements 31 facing each other may be arranged.

  Of these, in the example shown in FIG. 8, each jump prevention element 31 includes a position that is the center of the rectangular side that forms the outline of the front frame portion 20 when viewed from the normal direction nd to the placement surface 11 a. Is arranged. In this modification, one jump prevention element 31 is disposed in each region including the position that is the center of the side of the rectangle. The plurality of jump prevention elements 31 are arranged apart from each other.

  On the other hand, in the example shown in FIG. 9, the leap prevention structure 30 extends circumferentially along a rectangle that defines the outline of the front frame portion 20. That is, the jump prevention structure 30 extends endlessly along a rectangle that forms the outline of the front frame portion 20. For this reason, the adjacent jump prevention elements 31 are connected and integrated with each other.

  8 and 9, when the storage case 1 is stacked and transported, the sheet member 90 stored in the storage space 21 of the storage case 1 jumps up and is stored in the upper position. The jumping prevention structure 30 of the case 1 can be suppressed with a good balance. For this reason, it can suppress effectively that the sheet | seat member 90 is damaged.

  In the above-described embodiment, as shown in FIG. 4, the example in which one sheet member 90 is placed on the placement surface 11 a of the placement unit 10 is shown, but the sheet member 90 is placed on the placement surface 11 a. The number of sheet members 90 to be used is not limited to the example described above. For example, a plurality of sheet members 90 may be placed on the placement surface 11 a of the placement unit 10. In this case, a plurality of sheet members 90 and a plurality of slip sheets are accommodated in the accommodation space 21 such that the sheet members 90 and the slip sheets are alternately arranged on the placement surface 11 a of the placement unit 10. May be. Further, in this case, the distance between the tip 32 of the jump prevention structure 30 and the placement surface 11a of the other storage case 1 in which the storage cases 1 are stacked is the total thickness of the sheet member 90 and the interleaf paper. It is decided according to.

  EXAMPLES Hereinafter, although this invention is demonstrated in detail using an Example, this invention is not limited to this Example. This embodiment corresponds to a housing case for housing the Fresnel lens sheet shown in FIGS. The dimensions of each part of the housing case to be manufactured are as shown in FIGS.

  In addition, the gap between the tip of each jump prevention element constituting the jump prevention structure and the placement surface of another storage case on which the storage cases are stacked was 2.0 mm. The thickness of the Fresnel lens sheet as a sheet member housed in the housing case was 1.5 mm. Therefore, the gap between the tip of each jump prevention element constituting the jump prevention structure and the Fresnel lens sheet placed on the placement surface of the other accommodation case in which the accommodation cases are stacked is 0. 0.5 mm.

  As a material constituting each component, a polypropylene resin (manufactured by Gifu Plastic Industry Co., Ltd., trade name TECELL-PP) having a honeycomb structure is used for the mounting portion, and the front frame portion, the jump-up preventing structure, and the back frame A foamed polypropylene resin (manufactured by Sumitomo Chemical Co., Ltd., trade name Smither) was used for the part.

  A plurality of storage cases according to the example were created, and a Fresnel lens sheet was stored in each storage case. Subsequently, a plurality of storage cases were stacked and transported. Even when the vibration was transmitted to the housing case during transportation and the Fresnel lens sheet jumped up from the mounting surface of the housing case, it was suppressed by coming into contact with the upper structure of the housing case located above. As a result, it was possible to effectively prevent the lens surface and the top of the Fresnel lens sheet from being crushed or scratching the surface of the Fresnel lens sheet during transportation.

  After the transport of the storage case, the sheet member stored in the storage case was taken out of the storage case. At this time, the periphery of the Fresnel lens sheet can be easily removed from the mounting surface by inserting a finger into the concave portion formed on the inner surface of the front frame portion and applying the finger to the Fresnel lens sheet on the mounting surface from the side. The Fresnel lens sheet could be easily taken out.

DESCRIPTION OF SYMBOLS 1,501 Storage case 2 Storage case main body 10,510 Mounting part 10a Outer contour 11,511 Front surface 11a Mounting surface 12 Back surface 12a Edge part 20,520 Front frame part 20a Outer contour 21,521 Housing space 24 Inner side surface 25 Outside Side surface 30 Jumping prevention structure 31 Jumping prevention element 31a-d First to fourth jumping prevention element 32 Tip 33 Head 34 Body 40 Back frame 40a Outer contour 50 Recess 51 Opening 90, 590 Sheet member (Fresnel) Lens sheet)
nd Normal direction

Claims (10)

A storage case used in a stack,
A housing case body for housing the sheet member;
The housing case body is
A mounting portion having a front surface having a mounting surface on which the sheet member is mounted; and a back surface facing the front surface;
A front frame portion that is provided on the front surface side of the mounting portion and forms an accommodation space for accommodating the sheet member;
A jump-up preventing structure projecting from the back surface of the mounting portion;
Have
When the storage case body of one storage case is stacked on the storage case body of another storage case, the jumping prevention structure of one storage case is inserted into the storage space of the other storage case A housing case in which the tip of the jumping prevention structure of one housing case is opposed to the mounting surface of the other housing case and is separated from the mounting surface.   When the storage case main body of one storage case is stacked on the storage case main body of another storage case, in the storage space of the other storage case among the jumping prevention structures of the one storage case The portion inserted into the storage frame abuts against the front frame portion of the other storage case, and the lateral movement between the one storage case and the other storage case can be restricted. Storage case. The housing case body further includes a back frame portion provided on the back side of the mounting portion so as to surround the jump prevention structure,
The storage case according to claim 1 or 2, wherein the front frame portion and the back frame portion overlap at least partially when viewed from the normal direction to the placement surface.   The storage case according to claim 3, wherein the back picture frame portion is arranged to be separated from an edge portion of the back surface of the mounting portion. The jump prevention structure is disposed adjacent to the back frame portion,
The accommodation case according to claim 3 or 4 with which said jump prevention structure is joined to the side of said back picture frame part.   The front frame frame portion extends along a rectangular outline when viewed from the normal direction to the placement surface, and the jump prevention structure extends along at least a part of the side of the rectangle. The housing case according to any one of claims 1 to 5, comprising: The jump prevention structure has a plurality of the jump prevention elements,
The plurality of jump prevention elements include a first jump prevention element arranged along one side of the rectangle, and a second jump prevention element arranged along another side facing the one side of the rectangle. The storage case according to claim 6, comprising an upper prevention element.   The plurality of leap prevention elements are arranged along a third leap prevention element arranged along one side orthogonal to one side of the rectangle and the other side perpendicular to one side of the rectangle. The storage case according to claim 7, further comprising a fourth jumping prevention element arranged.   The storage case according to any one of claims 6 to 8, wherein the jump prevention element is disposed in a region including a position that becomes a corner of the rectangle when viewed from a normal direction to the placement surface.   When the storage case main body of one storage case is stacked on the storage case main body of another storage case, the tip of the jump prevention structure of the one storage case and the mounting surface described above of the other storage case The accommodation case according to any one of claims 1 to 9, wherein a gap therebetween is larger than 1.0 mm and not larger than 4.0 mm.

Images