Stand for smart devices

Abstract

We provide a stand for smart devices that has an acoustic adjustment function. [Solution] The problem is solved by a smart device stand having a back portion located on the back side of the smart device, a holding portion for holding the smart device, a long side portion extending from the back portion, a short side portion extending from the back portion, a space enclosed by the long side portion and the short side portion that extends from the back side toward the front, and a support portion that maintains the front side of the space toward diagonally upward, wherein the holding portion is positioned to protrude forward from the back portion, and the smart device is held in the space in front of the back portion and behind the front side edges of the long side portion and the short side portion, and spaced apart from the back portion, the long side portion and the short side portion.

Description

[Technical Field]

[0001] This invention relates to a stand for smart devices. [Background technology]

[0002] Smartphones and other smart devices have a wide range of uses, including making calls, sending emails, browsing websites, taking photos and videos, drawing, writing, and more. On the other hand, with improvements in smart device performance and larger display sizes, as well as the proliferation of music and video streaming services, it is becoming increasingly common to enjoy music and videos using the viewing functions of smart devices.

[0003] When using a smartphone to listen to music or watch videos, holding the smartphone with one hand or placing it on a stand and looking down at it can become tiring over time. Therefore, technologies have been proposed for smart device stands that can fix smartphones and other smart devices at a fixed angle.

[0004] For example, the smartphone stand described in Patent Document 1 can fix and hold a smartphone in either a horizontal or vertical position. Furthermore, the smartphone stands described in Patent Documents 2 and 3 focus on the sound quality when playing music on a smartphone and have a function to adjust the sound emitted from the smartphone's speaker. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Utility Model Registration No. 3233905 [Patent Document 2] Utility Model Registration No. 3230868 [Patent Document 3] Utility Model Registration No. 3187559 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] However, the smartphone stand described in Patent Document 1 has many components and materials, such as clamping means, pressing members, biasing means, and sliders, and its structure is complex. In recent years, issues such as marine pollution caused by microplastics have attracted attention, and the movement to reduce plastic use is progressing globally from the standpoint of environmental protection. In Japan, efforts to reduce plastic use have been made, such as the enactment of the "Act on Promotion of Resource Recycling Related to Plastics," and there is a growing trend towards non-plastic items for everyday necessities. However, the smartphone stand described in Patent Document 1 has a structure that makes it difficult to reduce plastic use. Furthermore, the smartphone stand described in Patent Document 1 does not take into account the sound quality during music or video playback. In addition, when changing the orientation of the smartphone from horizontal to vertical, or vice versa, it is necessary to remove the smartphone from the stand and reposition it, which is cumbersome.

[0007] On the other hand, the smartphone stands described in Patent Documents 2 and 3 can be assembled from sheet-like materials, making them easy to eliminate plastic from, and they also have a function to adjust sound. However, when a smartphone is placed on the stand, the components are positioned in front of the display, which makes it difficult to watch videos, view the display, and operate the device through the display. Furthermore, it is not possible to select between horizontal and vertical orientation of the smartphone. In addition, if the smartphone's speaker is not in an appropriate position when placed on the stand, the sound adjustment function, such as sound diffusion, is not performed, which limits the types of smartphones for which sound adjustment is possible.

[0008] Therefore, the main objective of the present invention, in view of the above problems, is to provide a smart device stand that allows the orientation of the smart device to be changed by rotating it while the smart device is placed on it, is easy to assemble and disassemble from a sheet material while having a three-dimensional form for use, can be easily manufactured from a non-plastic sheet material, and has an acoustic adjustment function that is less restricted by the speaker position. [Means for solving the problem]

[0009] The first solution to the above problem was, A stand for a smart device, comprising: a rear portion located on the back side of the smart device; a holding portion for holding the smart device; a long side portion extending from the rear portion; a short side portion extending from the rear portion; a space enclosed by the long side portion and the short side portion, extending from the back side toward the front side; and a support portion that maintains the front side of the space toward diagonally upward, The holding portion is positioned to protrude forward from the rear portion, and the smart device is held in the space in front of the rear portion and behind the front side edges of the long side portion and the short side portion, and spaced apart from the rear portion, the long side portion and the short side portion. This is a stand for smart devices characterized by the following features.

[0010] The second method is, The aforementioned retaining part is It has a rear support portion that protrudes forward from the rear portion and supports a part of the rear of the smart device in contact with it, a pair of long side support portions that support the smart device in contact with the long side of the smart device, and a pair of short side support portions that support the smart device in contact with the short side of the smart device. This is a stand for a smart device related to the first method described above.

[0011] The third option is, On the front side of the smart device, there is a front plate portion located away from the display of the smart device. In the front plate portion, a window portion for viewing the display of the smart device and a hole for acoustic adjustment are provided at a position between at least one of the long side surface portion and the short side surface portion. This is a stand for a smart device according to the first or second means.

[0012] The fourth means is The support portion has a back plate portion connected to the back surface portion, and a substantially trapezoidal first support portion and a second support portion that extend from the back plate portion and narrow in the extending direction, with one hypotenuse being longer than the other hypotenuse. The front end portions in the extending direction of the first support portion and the second support portion are connected to each other. This is a stand for a smart device according to the first to third means.

[0013] The fifth means is The back surface portion, the holding portion, the back surface portion, and the long side surface portion are assembled from a single sheet material. The holding portion is formed to protrude from the back surface portion by being cut and raised, and the long side surface portion and the short side surface portion extend from the back surface portion via a fold line, are bent forward from the back surface portion along the fold line, and the edges are engaged and connected to each other. This is a stand for a smart device according to the first to fourth means.

[0014] The sixth means is The support portion is assembled from a single sheet material and has a back plate portion, and a substantially trapezoidal first support portion and a second support portion that extend from the back plate portion via a fold line and narrow in the extending direction, with one hypotenuse being longer than the other hypotenuse. The first support portion and the second support portion are bent via a fold line, and the front end portions in the extending direction are close to each other and engaged to be formed. This is a stand for a smart device according to the first to fifth means.

[0015] The seventh means is The sheet material is paper made by papermaking pulp fibers, and the paper is multi-layer paper in which a plurality of paper layers are laminated. This is a stand for a smart device according to the fifth or sixth means.

Advantages of the Invention

[0016] According to the present invention, it is possible to change the vertical and horizontal directions of the smart device by rotating the smart device while it is placed, and it has a three-dimensional usage form during use, yet it is easy to assemble and disassemble from a sheet-like material, can be easily manufactured from a non-plastic sheet material, and furthermore, it is possible to provide a stand for a smart device having an acoustic adjustment function with fewer restrictions due to the speaker position.

Brief Description of the Drawings

[0017] [Figure 1] It is a front view of the stand for a smart device of the present embodiment. [Figure 2] It is a front view of a mode in which a smart device is held by the stand for a smart device of the present embodiment. [Figure 3] It is a schematic internal view from the short side surface direction of the stand for a smart device of the present embodiment. [Figure 4] It is a schematic internal view from the long side surface direction of the stand for a smart device of the present embodiment. [Figure 5] It is a front view of the front plate portion of the stand for a smart device of the present embodiment. [Figure 6] It is a view showing the unfolded form of the stand for a smart device of the present embodiment. [Figure 7] It is a view taken in the direction of arrow VII-VII of FIG. 6. [Figure 8] It is a view for explaining the assembly of the stand for a smart device of the present embodiment. [Figure 9] It is a view showing the unfolded form of the support portion of the stand for a smart device of the present embodiment. [Figure 10] It is a view taken in the direction of arrow X-X of FIG. 9. [Figure 11] It is a front view of the support portion of the stand for a smart device of the present embodiment. [Figure 12] It is a view for explaining the structure of the support portion of the stand for a smart device of the present embodiment. [Figure 13] This figure shows the smart device stand support of this embodiment as seen from the first support portion. [Figure 14] This figure shows the smart device stand support of this embodiment as seen from the second support portion. [Figure 15] This figure shows the smart device stand of this embodiment in position A, placed on a flat surface. [Figure 16] This figure shows the smart device stand of this embodiment in position B, placed on a flat surface. [Figure 17] This figure shows the smart device stand of this embodiment in position C, placed on a flat surface. [Figure 18] This figure shows the smart device stand of this embodiment in position D, placed on a flat surface. [Figure 19] This figure shows the sheet material for the smart device stand according to this embodiment. [Modes for carrying out the invention]

[0018] Next, embodiments of the present invention will be described in detail below with reference to Figures 1 to 19. However, the present invention is not limited to the shapes shown or these embodiments. Needless to say, the detailed shapes and positions of each part can be changed within the scope of the present invention.

[0019] The smart device stand 1 according to this embodiment is a holder that maintains the display surface 2S of the smart device 2 facing diagonally upward on a flat surface P such as a desk, and in particular has an acoustic adjustment function.

[0020] The smart device 2 targeted by the present invention is not necessarily limited, but it is preferably a thin, roughly rectangular parallelepiped shape enclosed by long sides 2A, 2B, short sides 2C, 2D, a display surface 2S, and a back surface 2R. The long sides 2A, 2B and short sides 2C, 2D may be curved surfaces that bulge outward and curved surfaces that concave inward. The back surface 2R may not be a flat surface but may have a convex shape with a lens portion for camera function. Furthermore, it may have surfaces other than the display surface 2S that is mainly viewed during use. For example, it may be a foldable smart device. In this case, the display surface that is mainly used in both the folded and unfolded usage modes is considered the front. Also, in the present invention and this embodiment, the direction along the long sides 2A, 2B of the smart device 2 may be called the vertical or longitudinal direction, and the direction along the short sides 2C, 2D may be called the horizontal or transverse direction.

[0021] The smart device stand 1 of this embodiment can be assembled from a sheet material such as paper. The following description will mainly focus on an embodiment assembled from two sheet materials, referring to the unfolded and assembled forms. However, the present invention is not limited to the form assembled from the sheet materials shown in the unfolded form.

[0022] The smart device stand 1 of this embodiment includes a rear portion 20 located on the back side of the smart device 2, a holding portion 30 for holding the smart device 2, a long side portion 40 extending from the rear portion 20, a short side portion 50 extending from the rear portion 20, a space 1S that extends from the rear side toward the front side and is surrounded by the long side portion 40 and the short side portion 50, and a support portion 60 that maintains the front side of the space 1S so that it faces diagonally upward.

[0023] In this embodiment, the smart device stand 1 is assembled in such a way that, as shown in the unfolded form in Figures 6-7 and 9-10, the back portion 20, the holding portion 30, the long side portion 40, and the short side portion 50 are assembled from a single sheet material, and the support portion 60 is assembled from another sheet material, and these are connected together.

[0024] The back portion 20 of the smart device stand 1 in this embodiment is a substantially rectangular planar area enclosed by a pair of long sides 20A, 20B and a pair of short sides 20C, 20D, and is formed at a position away from the back surface 2R of the smart device 2 when the smart device is held in the holding portion 30. The back portion 20 can be formed including a portion of the sheet material.

[0025] The holding portion 30 is located in front of the back portion 20 and holds the smart device 2 at a position away from the back portion 20 with the display surface 2S facing forward. Preferably, the holding portion 30 is formed by cutting and raising a part of the sheet material at the same position as the back portion 20 in the unfolded form, as shown in Figures 6 to 8. If it is not formed from a single sheet material, it may be formed, for example, by adhering a separate member to the back portion 20 with an adhesive. By holding the smart device 2 at a position away from the back portion 20 with the holding portion 30, a space can be created on the back side of the smart device 2, allowing sound generated from the smart device 2 to diffuse to the back side and thus adjusting the sound.

[0026] Preferably, the holding portion 30 consists of a rear holding portion 31 that supports the smart device 2 in contact with a part of its back, a pair of long-side holding portions 32, 32 that support the smart device 2 in contact with its long sides 2A, 2B, and a pair of short-side holding portions 33, 33 that support the smart device 2 in contact with its short sides 2C, 2D. The rear holding portion 31 supports the smart device 2 at a position away from the front of the back portion 20, and the long-side holding portions 32 and short-side holding portions 33 restrict the smart device 2 from moving in the longitudinal and short-side directions. For example, while the smart device 2 is held in the holding portion 30, the smart device stand 1 can be rotated to a position where the long sides 20A, 20B of the back portion 20 are in the vertical direction, and the short sides 20C, 20D are in the vertical direction, thereby changing the vertical and horizontal orientation of the smart device 2 without removing it from the smart device stand.

[0027] The rear support portion 31 has, for example, an appropriate convex shape that protrudes forward from the rear portion 20 and is formed to contact a part of the rear surface 2R of the smart device 2. In particular, the area in contact with the rear surface 2R of the smart device 2 is not limited, but it is desirable to keep it as small as possible as long as it has sufficient strength to provide stable support. For example, as shown in the figure, it is desirable to have convex ridges formed in two places along both short sides 20C and 20D of the rear portion 20. The vicinity of the short sides 2C and 2D of the rear surface 2R of the smart device 2 is supported, allowing the smart device 2 to be held stably, and the smart device 2 can be held in a form that leaves a wide area of ​​the rear side open. However, the rear support portion 31 only needs to be formed to support the rear surface 2R of the smart device 2, and its specific shape and number are not limited. It can have an appropriate shape and number. In the illustrated form, the back support portion 31 is formed by cutting and raising a part of the sheet material within the area constituting the back portion 20 in the unfolded state, via a fold line 31a. In particular, the cut and raised portion is further folded along fold lines 31b and 31c and assembled into a rectangular tube shape.

[0028] The pair of long side support portions 32, 32 support the smart device 2 by having one or both of them in contact with the long sides 2A, 2B, with the smart device 2 positioned between them. The long side support portions 32 have, for example, an appropriate convex shape that protrudes forward from the back portion 20, and are formed to contact a part of the long sides 2A, 2B of the smart device 2. There can be more than one pair of long side support portions 32, 32. As shown in the illustrated form, it is desirable to provide two sets of long side support portions 32, 32 so that both ends of the long sides 2A, 2B are supported. This allows for stable support of the smart device 2. The distance between the pair of long side support portions 32, 32 can be formed according to the size of the smart device 2. For example, if the distance between the long side support portions is made to approximately match the distance between the long sides of the smart device 2, the smart device 2 can be clamped, making it a dedicated product for a particular smart device 2. However, the pair of long side support portions 32, 32 do not necessarily have to be in contact with the long sides 2A, 2B of the smart device 2 at the same time. The distance between the pair of long side support portions 32, 32 may be longer than the distance between the long sides 2A, 2B of the smart device 2, leaving some clearance between the smart device 2 and the long side support portions 32, 32. In this case, one of the long side support portions 32 will be in contact with and support one of the long sides 2A, 2B of the smart device 2. It is desirable that the long side support portions 32, 32 are formed by cutting and raising a portion of the sheet material within the area constituting the back portion 20 in the unfolded state, as shown in the illustrated form, and in particular, it is desirable that they be cut and raised integrally with the back support portion 31 and formed to stand upright at both ends of the back support portion 31.

[0029] The pair of short-side holding portions 33, 33 support the smart device 2 by having one or both of them in contact with the short sides 2C, 2D when the smart device 2 is placed between them. The short-side holding portions 33, 33 have an appropriate convex shape, for example, that protrudes forward from the back portion 20, and are formed to contact a part of the short sides 2C, 2D of the smart device 2. There can be more than one pair of short-side holding portions 33, 33. As shown in the illustrated configuration, it is desirable to provide two sets of short-side holding portions 33, 33 so that both ends of the short sides 2C, 2D are supported. This allows for stable support of the smart device 2. The distance between the pair of short-side holding portions 33, 33 can be formed according to the size of the smart device 2. For example, if the distance between the short-side holding portions 33, 33 is made to approximately match the distance between the short sides 2C, 2D of the smart device 2, the smart device 2 can be clamped. However, the pair of short-side holding portions 33, 33 do not necessarily have to be in contact with the short sides 2C, 2D of the smart device 2 at the same time. The distance between the pair of short-side holding portions 33, 33 may be longer than the distance between the short sides 2C, 2D of the smart device 2, leaving some clearance between the smart device 2 and the short-side holding portions 33, 33. In this case, one of the short-side holding portions 33 will be in contact with and support one of the short sides 2C, 2D of the smart device 2. Preferably, the short-side holding portions 33, 33 are formed by cutting and raising a portion of the sheet material within the area constituting the back portion 20 in the unfolded state via a fold line 32a, as shown in the illustrated form.

[0030] The long side retaining portion 32 and the short side retaining portion 33 do not need to be in contact with the smart device 2 at the same time. Also, the specific shape of the long side retaining portion 32 and the short side retaining portion 33 is not limited, but it is preferable that they be formed in the shape of a small piece or a rod. Some smart devices 2 have speakers located on the long sides 2A, 2B and the short sides 2C, 2D, and if they are in the shape of a small piece or a rod, the contact area becomes smaller, reducing the risk of blocking the speaker. Particularly preferable is to form them in the shape of a flat piece, so that they contact the smart device 2 at their edges. By contacting at the edge of a piece, the risk of blocking the entire speaker is reduced. In particular, as shown in the illustrated form, it is preferable that they are formed as cut-up pieces in which a part of the sheet material is cut up, so that they contact the smart device 2 at their edges.

[0031] It is preferable that the rear support portion 31, the long side support portion 32, and the short side support portion 33 are all formed by cutting and folding a portion of the sheet material located within the area constituting the rear portion 20 in the unfolded form, and in particular, that they be assembled by a locking structure that does not use adhesive. This makes it easier to disassemble after assembly and easier to dispose of. For example, as shown in the illustrated form, it is preferable that the rear support portion 31 is formed into a roughly rectangular tube by cutting and folding along fold lines 31a, 31b, and 31c, and that the long side support portions 32 are integrally cut and folded along fold line 31a and erected at both ends of the portion of the rear support portion 31 that stands up from the rear portion 20, and that the engaging portion 31d formed at the cut-and-folded tip of the rear support portion 31 engages with an engaging portion 32d formed on a part of the short side support portion 33 that is cut and folded at a different position from the rear support portion 31.

[0032] On the other hand, the long side portion 40 of this embodiment is formed to extend forward from the back portion 20. In the illustrated form, it extends via fold lines which are the long sides 20A and 20B of the back portion 20, and is folded forward from the back portion 20 along these fold lines, so as to extend forward from the back portion 20.

[0033] Furthermore, the short side portion 50 of this embodiment is formed to extend forward from the back portion 20. In the illustrated form, it extends via fold lines which are the short sides 20C and 20D of the back portion 20, and is folded forward from the back portion 20 along these fold lines, so as to extend forward from the back portion 20.

[0034] The long side portion 40 and the short side portion 50 are connected at their edges, and the edges 40A, 40B, 50C, and 50D on the front side are longer than the long sides 20A, 20B and short sides 20C, 20D of the back portion 20, which is the boundary with the back portion 20, forming a roughly trapezoidal shape. The long side portion 40 and the short side portion 50 form a rectangular tubular space 1S that is enclosed and particularly widens from the back side to the front side. The front edges 40A, 40B, 50C, and 50D of the long side portion 40 and the short side portion 50 are located in front of the rear holding portion 31, the long side holding portion 32, and the short side holding portion 33, and are also located at a distance from them. The smart device 2 is held in space 1S in front of the rear portion 20 and behind the front side edges 40A, 40B, 50C, and 50D of the long side portion 40 and the short side portion 50, at a distance from the rear portion 20, the long side portion 40, and the short side portion 50. Because the long side portion 40 and the short side portion 50 are located at a distance from the smart device 2, there is no risk of blocking the speaker of the smart device 2, and the sound emitted from the smart device 2 is less likely to diffuse outward beyond the long side portion 40 and the short side portion 50, and is adjusted to be emitted forward. Furthermore, the rectangular cylindrical portion formed by the long side portion 40 and the short side portion 50 surrounding the space 1S is horn-shaped, widening towards the front, so that the sound emitted from the smart device 2 is adjusted to be emitted more towards the front. Alternatively, the edges of the short side portion 50 may be shaped like arcs that are convex towards the front, as shown by the front edges 50C and 50D in the illustrated form.

[0035] Here, it is desirable that the edges of the long side portion 40 and the short side portion 50 are connected by engagement. This makes it easier to disassemble after assembly and easier to dispose of. In the illustrated form, an engaging projection 51 is formed on the edge of the short side portion 50, and an engaging recess 41 is formed on the edge of the long side portion 40 into which the engaging projection 51 engages, and the structure is locked in place when the engaging projection 51 is fitted into the engaging recess 41. However, the engagement structure is not limited to this form, and an engaging recess may be formed on the edge of the short side portion and an engaging projection on the edge of the long side portion so that they engage with each other. Known engagement structures can be used.

[0036] On the other hand, in the smart device stand 1 of this embodiment, a roughly rectangular cylindrical space 1S, enclosed by the long side portion 40 and the short side portion 50, particularly extending from the back to the front, is maintained by the support portion 60 so that the front side of the space 1S faces diagonally upward. The shape of the support portion 60 is not necessarily limited, but it is desirable that the angle of the front side of the space 1S toward the upward direction can be changed when the smart device stand 1 is placed on a flat surface. Furthermore, it is desirable that the stand can be configured to maintain the stand in a position where the long side portion 40 is positioned vertically and the short side portion 50 is positioned horizontally, or in a position where the short side portion 50 is positioned vertically and the long side portion 40 is positioned horizontally.

[0037] The support portion 60 of this embodiment specifically has, as shown in particular in Figures 9 to 14, a back plate portion 63 connected to the back portion 20, and a roughly trapezoidal first support portion 61 and a second support portion 62 that extend from the back plate portion 63 and narrow in the direction of extension, with one hypotenuse 61A, 62A being longer than the other hypotenuse 61B, 62B, and is formed by connecting the leading ends of the first support portion 61 and the second support portion 62 in the direction of extension. In addition, the support portion 60 of this embodiment is assembled from a single sheet material, with the first support portion 61 and the second support portion 62 extending via the long sides 63A, 63B of the back plate portion 63, which also serve as fold lines, and the first support portion 61 and the second support portion 62 being folded along their fold lines so that their leading ends in the direction of extension are close together and connected.

[0038] In this embodiment, the back plate portion 63 is positioned on the rear side of the back portion 20 so as to overlap with the back portion 20. When a portion of the sheet material within the area constituting the back portion 20 in the unfolded form is cut and raised to form a holding portion 30, it is desirable that the back plate portion 63 has a shape that closes the hole formed by the cutting and raising. In this embodiment, the back plate portion 63 is a plate-like, substantially rectangular shape similar to the area of ​​the back portion 20 enclosed by the long sides 20A, 20B and the short sides 20C, 20D. The long sides 63A, 63B of the back plate portion 63, which are also fold lines, are aligned with the long sides 20A, 20B of the back portion 20, and the short sides 63C, 63D of the back plate portion 63 are aligned with the short sides 20C, 20D of the back portion 20 so as to overlap with the back plate portion 63. It is positioned on the rear side of the back portion 20 so as to close the hole formed by the cutting and raising of the back holding portion 31, the long side holding portion 32, and the short side holding portion 33. By closing the holes formed by cutting and bending, the sound emitted from the smart device 2 held in the holding part 30 is prevented from diffusing backward from the holes and is adjusted to diffuse more forward. However, the shape of the back plate part 63 is not necessarily limited.

[0039] The connection between the back portion 20 and the back plate portion 63 may be made by means of adhesive, or by engagement, etc. Preferably, it is desirable to connect them by engagement without using adhesive. In the illustrated form, in the unfolded state, a portion of the sheet material within the area constituting the back portion 20 is cut and bent towards the rear side opposite to the holding portion 30, using the long sides 20A, 20B of the back portion 20 as the baseline, to form insertion pieces 21, 21. On the other hand, insertion holes 64, 64 are formed along the long sides 63A, 63B of the back plate portion 63 into which the insertion pieces 21, 21 are inserted, and the connection is made by engagement by inserting the insertion pieces 21 into the insertion holes 64. There may be multiple combinations of insertion pieces 21 and insertion holes 64. This connection method is easy to assemble and disassemble because it can be easily connected without using adhesive.

[0040] On the other hand, in the support portion 60 of this embodiment, the first support portion 61 and the second support portion 62 are composed of a substantially trapezoidal region formed by narrowing in the direction of extension from the long sides 63A and 63B of the back plate portion 63, and the long sides 20A and 20B of the back plate portion 63 are shared lines with the lower base of the first support portion 61 and the lower base of the second support portion 62, respectively, and these lines serve as fold lines. The first support portion 61 and the second support portion 62, which extend from the back plate portion 63, are connected with their extension ends close together, and together with the back plate portion 63, they form a substantially triangular cylindrical shape as a whole. The extension ends may be connected by adhesive, for example, or by engagement. Preferably, it is desirable to connect them by engagement without using adhesive. In the illustrated configuration, a tongue-shaped piece 62C is formed extending from the tip edge of the second support portion 62, and an insertion portion 61C into which the tongue-shaped piece 62C is inserted is formed at the tip edge of the first support portion 61, so that the tongue-shaped piece 62C is inserted into the insertion portion 61C and engaged to connect them.

[0041] In this embodiment, the support portion 60, due to the connection configuration between the back plate portion 63 and the rear portion 20, and the triangular cylindrical shape of the support portion 60, when the smart device stand 1 is placed on a flat surface with the first support portion 61 or the second support portion 62 facing downwards, the long sides 20A and 20B of the rear portion 20 are oriented vertically, and the front side of the space 1S enclosed by the long side portion 40 and the short side portion 50 is maintained to face upwards. For example, as shown in Figure 15, the long side 20A of the rear portion 20 or the long side 63A of the back plate portion 63 and the tip edge 61T of the first support portion 61 act as legs and are maintained in posture A, or as shown in Figure 16, the long side 20B of the rear portion 20 or the long side 63B of the back plate portion 63 and the tongue piece 62C or the trapezoidal area surface of the first support portion 61 act as legs and are maintained in posture B.

[0042] Furthermore, in the support portion 60 of this embodiment, the distance from the lower base to the upper base of the trapezoidal region, which is also the long sides 63A and 63B of the back plate portion 63, is different for the first support portion 61 and the second support portion 62. The connection position is located closer to the long sides 63A and 63B than the tip edge 61T of the first support portion 61, so that the upward orientation of the back plate portion 63 is different when the first support portion 61 is positioned downwards compared to when the second support portion 62 is positioned downwards. Therefore, the forward angle of the space 1S enclosed by the long side portion 40 and the short side portion 50 is adjusted by selecting whether to position the first support portion 61 downwards or the second support portion 62 downwards. Specifically, the angle ∠A between the back portion 20 and the platform P in posture A can be adjusted by adjusting the length from the tip edge 61T of the first support portion 61 to the long side 63A of the back plate portion 63. The angle ∠A between the back portion 20 and the platform in posture A can be, for example, 60 to 75°. The angle ∠B between the back portion 20 and the platform P in posture B can be adjusted by adjusting the length from the tip of the second support portion 62 to the long side 63B of the back plate portion 63 or the position of the insertion portion 61C. The angle ∠B between the back portion 20 and the platform in posture B can be, for example, 35 to 50°.

[0043] Furthermore, in the support portion 60 of this embodiment, due to the connection configuration between the back plate portion 63 and the rear portion 20, and the triangular cylindrical shape of the support portion 60, when a smart device stand is placed on a flat surface with the opening edge of the triangular cylindrical portion enclosed by the short sides 63C, 63D of the back plate portion 63, the hypotenuse 61A of the first support portion 61, and the hypotenuse 62A of the second support portion 62 facing downwards, the short sides 20C, 20D of the rear portion 20 are oriented vertically, and the front side of the space 1S enclosed by the long side portion 40 and the short side portion 50 is maintained to face upwards. For example, as shown in Figure 17, the short side 20C of the back portion 20 or the short side 63C of the back plate portion 63 and the longer hypotenuses 61A, 62A of the first support portion 61 and the second support portion 62 act as legs, maintaining an upright posture C. Alternatively, as shown in Figure 18, the short side 20D of the back portion 20 or the short side 63D of the back plate portion 63 and the shorter hypotenuses 61B, 62B of the first support portion 61 and the second support portion 62 act as legs, maintaining an upright posture D.

[0044] Furthermore, in the support portion 60 of the embodiment, the substantially trapezoidal regions of the first support portion 61 and the second support portion 62 have different lengths for one hypotenuse 61A, 62A and the other hypotenuse 61B, 62B. Therefore, when the opening edge of the triangular cylindrical portion enclosed by the short side 63C of the back plate portion 63, the long hypotenuse 61A of the first support portion, and the long hypotenuse 62A of the second support portion is oriented downwards, the orientation of the back portion 20 toward the upper side differs depending on whether the opening edge of the triangular cylindrical portion enclosed by the short side 63D of the back plate portion 63, the short hypotenuse 61B of the first support portion 61, and the short hypotenuse 62B of the second support portion is oriented downwards. For this reason, the angle toward the front of the space 1S enclosed by the long side portion 40 and the short side portion 50 can be adjusted by selecting whether to align the long hypotenuse 61A, 62A of the first support portion 61 and the second support portion 62 downwards or the short hypotenuse 61B, 62B downwards. More specifically, the angle ∠C between the back portion 20 and the platform P in posture C, where the long hypotenuse 61A of the first support portion 61 and the long hypotenuse 62A of the second support portion 62 form the legs, is smaller than the angle ∠D between the back portion 20 and the platform in posture D, where the short hypotenuse 61B of the first support portion 61 and the short hypotenuse 62B of the second support portion 62 form the legs. Angle ∠C between the back portion 20 and the platform in postures C and D θ The angle ∠D can be adjusted by adjusting the angles formed by the hypotenuses 61A, 61B, 62A, 62B of the first support portion 61 and the second support portion 62 and the long sides 20A, 20B of the back plate portion 63, and the lengths of the hypotenuses 61A, 61B, 62A, 62B. The angle ∠C formed by the back portion 20 and the platform in posture C can be, for example, 35 to 50°. The angle ∠D formed by the back portion 20 and the platform in posture D can be, for example, 60 to 75°.

[0045] In addition, a preferred configuration of the smart device stand 1 of this embodiment is such that the sum of the distance LE from the long side 63A of the back plate portion 63 to the tongue piece 62C and the distance RE from the long side 63B of the back plate portion 63 to the insertion portion 61C is longer than the length CE of the short sides 63C and 63D of the back plate portion 63. For example, if the sum of the distance LE and the distance RE is 1.5 to 1.7 times the length CE, the stand will be less likely to tip forward and will be easier to maintain in an upright position when the first support portion 61 and the second support portion 62 are connected by engagement.

[0046] The support portion 60 is not necessarily limited in shape and structure as long as it can maintain the front side of the space 1S enclosed by the long side portion 40 and the short side portion 50 so that it faces diagonally upward. A preferred form is one in which, when the smart device stand 1 is placed on a flat surface, the angle of the front side of the space 1S toward the upward side can be changed, and it is possible to select between maintaining postures A and B in which the long side portion 40 is positioned vertically and the short side portion 50 is positioned horizontally, and maintaining postures C and D in which the short side portion 50 is positioned vertically and the long side portion 40 is positioned horizontally. The support portion may be in a form in which, for example, the first support portion 61 and the second support portion 62 extend from the long sides 20A and 20B of the back portion 20 without going through the back plate portion 63. Alternatively, for example, a part of the sheet material within the area constituting the back portion in the deployed form may be cut and bent toward the rear side in the opposite direction from the holding portion. Furthermore, for example, protrusions or pieces of appropriate length may be formed by bonding them to the rear side from the back surface using adhesive or the like.

[0047] Furthermore, in this embodiment, the smart device stand 1 is supported by the rear holding portion 31, the long side holding portion 32, and the short side holding portion 33, so that the long side 2A, 2B and the short side 2C, 2D of the smart device can be held in a supported state regardless of the posture A, posture B, posture C, or posture D. In addition, even if the posture of the smart device 2 is changed by rolling it in the order of posture A, posture D, posture B, posture C, and posture A, or in the order of posture A, posture C, posture B, posture D, and posture A, the smart device 2 is unlikely to fall out of the holding portion 30.

[0048] On the other hand, the smart device stand 1 of this embodiment has a front plate portion 80 located on the front side of the smart device 2, away from the display surface 2S of the smart device 2, when the smart device 2 is held in the holding portion 30. This front plate portion 80 has a window portion 81 that allows the display surface 2S of the smart device 2 to be seen, and an acoustic adjustment hole 82 located between at least one of the long side portion 40 and the short side portion 50. The acoustics are adjusted by the front plate portion 80, which diffuses the sound emitted from the smart device 2 not across the entire front side, but particularly through the window portion 81 and the acoustic adjustment hole 82.

[0049] The shape and size of the window portion 81 are not limited. They can be designed appropriately considering the size of the display surface 2S of the smart device 2 that is expected to be used. The size and number of sound adjustment holes 82 are also not limited. In the illustrated form, they are elongated in shape along the edge of the long side portion 40. In addition, they can be formed in a slit shape or composed of many small holes. The sound can be adjusted by changing the shape and size of the holes.

[0050] Furthermore, it is desirable that the front panel 80 of this embodiment be assembled from a single sheet material that constitutes the back panel 20, the holding panel 30, the long side panel 40, and the short side panel 50. This facilitates assembly and disassembly. For example, the front panel 80 can be assembled from a single sheet material that constitutes the back panel 20, the holding panel 30, the long side panel 40, and the short side panel 50 by extending one of the front edges 40A, 40B, 50C, or 50D of the long side panel 40 or the short side panel 50, which forms the edge of the front opening of the space 1S surrounded by the long side panel 40 and the short side panel 50, as a fold line 80a, and folding along the fold line 80a. In the illustrated form, it extends from one of the front edges of the long side panel 40, but it may also be configured to extend from one of the front edges of the short side panel 50. Also, the front panel 80 may be formed to open and close freely with the fold line 80a as the axis. Making it openable and closable makes it easier to hold the smart device 2 in the holding part 30.

[0051] Here, the smart device stand 1 of this embodiment can be manufactured with its size adjusted to take into account the size of the smart device 2. For example, it can be made into a small smart device stand that accommodates small smart devices larger than 6 inches and up to 8 inches, a medium smart device stand that accommodates medium smart devices larger than 8 inches and up to 10 inches, a large smart device stand that accommodates large smart devices larger than 10 inches and up to 12 inches, and an extra-large smart device stand that accommodates extra-large smart devices larger than 12 inches and up to 14 inches. For small smart devices, the area of ​​the back surface should be between 140mm and 185mm in height and between 220mm and 290mm in width. For medium-sized smart devices, the area of ​​the back surface should be between 185mm and 200mm in height and between 290mm and 300mm in width. For large smart devices, the area of ​​the back surface should be between 200mm and 230mm in height and between 300mm and 315mm in width. For extra-large smart devices, the area of ​​the back surface should be between 230mm and 240mm in height and between 315mm and 325mm in width.

[0052] In the formation of the smart device stand 1 of this embodiment from a sheet material, each fold line is a line that facilitates folding and bending of the sheet material. It may be a simple printed line for positioning, but preferably it is a score line, perforation, or half-slit, also called a fold line. Particularly preferred is a half-slit, which facilitates bending even if the material is stiff. The cut-tie ratio in the case of perforations and the slit depth in the case of half-slits can be changed according to the thickness and strength of the sheet material. Also, not all fold lines need to be of the same type; for example, some may be perforations and others half-slits. Furthermore, the cut-tie ratio in the case of perforations and the slit depth in the case of half-slits do not need to be the same.

[0053] The smart device stand 1 of this embodiment, having the structure described above, can be formed from a sheet material such as paper, as shown in the unfolded form, and can therefore be manufactured from a non-plastic sheet material. Furthermore, it can be assembled without using adhesive by engaging the insert pieces 21 and tongue pieces 62C with the corresponding insert parts 61C and insert holes 64, and can be disassembled into a sheet form in its unfolded state simply by pulling out the insert pieces 21, etc., to release the engagement.

[0054] Here, we will further describe a sheet material particularly suitable for the smart device stand 1 of this embodiment. From the viewpoint of reducing plastic use, the sheet material of this embodiment is preferably paper made from pulp fibers. Specifically, examples include corrugated cardboard sheets, coated cardboard, multilayer paper with multiple paper layers laminated together, and sheet materials made by laminating multiple paper substrates. Of course, it is even more desirable to have paper composed only of natural material-derived fibers that do not contain synthetic fibers including plastic. Preferably, paper made only of pulp fibers is desirable. Furthermore, a particularly preferred paper is multilayer paper having three or more paper layers. As shown in Figure 19, since the multilayer paper 180 has multiple paper layers 181, 182 laminated together, the properties of each layer can be changed, making it strong yet easy to fold. For example, by combining a pair of surface layers 181 that are excellent in water resistance and abrasion resistance but are hard and tend to break easily with a flexible middle layer 182, it becomes possible to achieve excellent toughness and durability, making it strong yet easy to fold and assemble. Furthermore, when each fold line is half-slit, multiple layers, including the surface layer, are not completely cut, significantly reducing the risk of breakage at each fold line. The multilayer paper 180 can be manufactured by multilayer papermaking. The multilayer paper 180 may be commercially available, for example, Elipla Paper manufactured by Dainichi Paper Co., Ltd.

[0055] When the sheet material is made of paper, the basis weight of the paper is preferably 600 g / m². 2 Above, a comfortable 700g / m 2 In particular, 800 g / m² is preferred. 2That concludes the explanation. With this basis weight paper, it is easy to assemble the stand 1 for smart devices by folding each part, and it is easy to create a stand 1 with sufficient rigidity and strength. There is no upper limit to the basis weight, but there is a risk that creases may easily occur during papermaking with the calender roll, etc., so from this point of view, the upper limit should be 1400g / m². 2 Preferably, 1240 g / m² 2 This is more preferable. Furthermore, when the sheet material is paper, the paper thickness is preferably 700 μm to 1800 μm, and more preferably 900 μm to 1400 μm. Note that the basis weight is the value measured in accordance with "Paper and cardboard - Method for measuring basis weight" described in JIS P 8124 (2011), and the paper thickness is the value measured in accordance with "Paper and cardboard - Test method for thickness and density" described in JIS-P8118 (2014).

[0056] When the sheet material is paper, the constituent pulp fibers of the paper are not necessarily limited, but preferred constituent pulp fibers are softwood kraft pulp such as unbleached softwood kraft pulp (NUKP), semi-bleached softwood kraft pulp (NSBKP), and bleached softwood kraft pulp (NBKP), and hardwood kraft pulp such as unbleached hardwood kraft pulp (LUKP), semi-bleached hardwood kraft pulp (LSBKP), and bleached hardwood kraft pulp (LBKP). Other pulps may be used in appropriate combinations of various known pulps, such as recycled paper pulp, hardwood sulfite pulp, softwood sulfite pulp, or pulp chemically or mechanically produced from non-wood fibers such as kenaf, hemp, and reed. It is desirable that softwood kraft pulp and hardwood kraft pulp make up 90-100% by mass, as this facilitates the development of strength. In this case, the mixing ratio of softwood kraft pulp to hardwood kraft pulp is preferably 5:95 to 30:70. Since the colors and patterns of smart devices, smart device cases, or covers vary, if a versatile white color is to be used for the smart device stand 1, white pulp is preferred, and it is especially preferable to use bleached softwood kraft pulp and bleached hardwood kraft pulp, which have a high degree of whiteness. In addition, a high degree of whiteness has the effect of making prints stand out when designs such as printing are applied to the stand. If environmental considerations are prioritized, unbleached kraft pulp, semi-bleached kraft pulp, or a mixture of unbleached kraft pulp and bleached kraft pulp can be used to produce a brown to light brown color. Furthermore, known pigment coatings or resin coatings may be applied to the surface to improve printability.

[0057] When paper is used as the sheet material, it is desirable that the tensile strength in both the longitudinal and transverse directions, as measured in accordance with JIS P 8113 (2006), be 20 kN / m or more, preferably 25 kN / m or more. Having this tensile strength makes it suitable for folding and assembly, and also facilitates the creation of a smart device stand 1 with sufficient strength.

[0058] When the sheet material is paper, it is desirable that the paper has a Taber stiffness of 100 mN·m or more in the longitudinal direction and 50 mN·m or more in the transverse direction, measured in accordance with JIS P 8125 (2000). Within this range, sufficient rigidity and strength can be achieved for the smart device stand 1, and it is also easy to fold and assemble.

[0059] Furthermore, when the sheet material is paper, the paper has a Z-axis strength of 450 kN / m 2 or more, preferably 2 550 kN / m or more, measured in accordance with JAPAN TAPPI Paper Pulp Test Method No. 18-1:2000. This makes it easy to manufacture the smart device stand 1 in the unfolded state by punching such as Thomson processing or cutting with a cutting plotter.

[0060] When the sheet material is the multi-layer paper 180 particularly preferred for the smart device stand 1 according to this embodiment, although the number of layers is not limited, it is preferably five to nine layers, and the number of layers of the middle layer 182 is three or more, particularly five layers. In particular, the form shown in FIG. 19 has three middle layers 182. It is said that when the total number of the middle layers 182 is three or more, the toughness and durability of the multi-layer paper 180 are more likely to be exhibited. From the viewpoint of maintaining the interlayer strength, the upper limit of the total number of the middle layers 182 is preferably seven layers or less. Also, three to seven layers are easy to operate while maintaining the interlayer strength when using a cylinder multi-cylinder combined papermaking machine.

[0061] When the sheet material is the multi-layer paper 180, the basis weight of the surface layer 181 and the middle layer 182 can be adjusted within the range of the overall basis weight when the above sheet material is paper, and is not particularly limited. Preferably, the basis weight of the surface layer 181 is 2 50 g / m[[ID=第十九]] 2 or more and 2 200 g / m 2 or less per layer, particularly preferably 2 70 g / m 2 or more and2 More than 800g / m 2 The following is preferable. Furthermore, it is preferable that the ratio of the total basis weight of the pair of surface layers 181, 181 to the total basis weight of the multilayer paper 180 is 20% or more and 35% or less. The rigidity of the pair of surface layers 181 is high and the flexibility of the middle layer 182 is excellent. Therefore, it is easy to fold at the fold lines and difficult to fold at positions other than the fold lines, making it easy to create a smart device stand 1 that is excellent in strength and ease of assembly.

[0062] When the sheet material is multilayer paper 180, the composition of pulp fibers in each layer of the multilayer paper 180 is preferably such that the mass ratio (%) of softwood kraft pulp to hardwood kraft pulp in the surface layer 181 is 0 / 100 or more and 15 / 85 or less. In addition, along with the surface layer 181, the middle layer 182 is preferably such that the mass ratio (%) of softwood kraft pulp to hardwood kraft pulp is 15 / 85 or more and 35 / 65 or less. A large amount of rigid and easily dense hardwood kraft pulp is contained, resulting in a high-density and rigid surface layer, while the middle layer contains a larger amount of softwood kraft pulp, which is more flexible than the surface layer. As a result, the stand 1 for smart devices tends to have less strength loss even when folded at each fold line during assembly and when repeatedly folded.

[0063] Furthermore, when the sheet material is multilayer paper 180, it is desirable that at least one of a sizing agent and a paper strength enhancer is added to the multilayer paper 180 as a papermaking additive. This makes it easier to adjust to the desired strength. In addition, the multilayer paper 180 may contain various other additives to the extent that they do not impair the effects intended for this invention. For example, polyvinyl alcohol or wax can be applied.

[0064] Examples of sizing agents include styrene-based sizing agents, alkyl ketene dimers (AKD), alkenyl succinic anhydride (ASA), neutral rosin sizing agents, rosin sizing agents, and modified rosin emulsion sizing agents. Among these, rosin sizing agents and modified rosin emulsion sizing agents are preferred. Rosin sizing agents are not particularly limited. Rosin-based substances include, for example, reinforced rosins obtained by modifying rosins such as gum rosin, wood rosin, and tall oil rosin with α,β-unsaturated carboxylic acids such as fumaric acid, maleic acid, and acrylic acid, or their anhydrides, and rosin esters obtained by reacting rosins with polyhydric alcohols such as glycerin, trimethylolethane, trimethylolpropane, pentaerythritol, and diglycerin. Rosin sizing agents also include emulsions of these alone or mixtures, and emulsions of these alone followed by mixtures. Furthermore, emulsions to which various polymers are added to further improve sizing properties are also included.

[0065] Various known paper strength enhancers can be used, including polyacrylamide resins, polyamide resins, polyamine resins, acrylic resins, melamine resins, urea resins, and polyamide epichlorohydrin resins. Among these, it is preferable to use an amphoteric paper strength enhancer. Examples of amphoteric polyacrylamides include copolymers of acrylamide with anionic monomers and cationic monomers, Mannich-modified copolymers of acrylamide with anionic monomers, and Hoffmann decomposition products. In particular, amphoteric polyacrylamide has a self-fixing function, so even if it is added to improve inter-paper strength, it does not result in an excess of cations, and it can be stably fixed by including it together with a modified rosin emulsion sizing agent.

[0066] The amount of sizing agent added is preferably 0.5 kg / t to 5.0 kg / t in terms of solid content. The amount of paper strength enhancer added is preferably 12 kg / t to 30 kg / t in terms of solid content. Note that "kg / t" indicates the mass (kg) per ton of pulp. Adding sizing agent within this range increases water resistance, making it easier to maintain sufficient strength even when wet clothing or towels are placed on it. It also helps to suppress the deterioration of sound quality due to a decrease in rigidity.

[0067] Furthermore, when the sheet material is multilayer paper 180, it is preferable to add at least one of the above-mentioned sizing agent and paper strength enhancer as a papermaking additive to each layer of the multilayer paper 180, including the surface layer 181 and the middle layer 182. In this case, the amount of sizing agent added to the surface layer 181 is preferably 0.5 kg / t to 5.0 kg / t in solid content. The amount of sizing agent added to the middle layer 182 is preferably 2.0 kg / t to 5.0 kg / t in solid content. The amount of paper strength enhancer added to each layer is preferably 12 kg / t to 30 kg / t in solid content. By keeping the amounts within this range, it is easier to achieve various paper strengths, such as interlayer strength, of the multilayer paper suitable for the smart device stand 1.

[0068] Furthermore, it is desirable that the smart device stand 1 according to this embodiment contains a siloxane compound. The presence of a siloxane compound increases rigidity, strength, and water resistance due to siloxane bonding. The siloxane compound is not necessarily limited as long as it has siloxane bonding, but since the smart device stand 1 is something that the user touches, it is desirable that it is non-toxic or has low toxicity to living organisms. In addition to coating the smart device stand 1 with the siloxane compound after assembly, the siloxane compound may also be incorporated by impregnating the sheet material before assembly or the sheet material as a raw material with an appropriate alkoxysilane solution or a processed alkoxysilane solution, and then heating or inducing heating. This is desirable because it allows the siloxane compound to be incorporated in a manner that it is bonded to the pulp fibers themselves or coats the pulp fibers.

[0069] Furthermore, the smart device stand 1 according to this embodiment may be coated or impregnated with a surface protective agent, antibacterial agent, or antiviral agent, to the extent that it does not excessively change the coefficient of friction, surface roughness, or folding suitability, and does not hinder the function of the smart device stand 1 or the effects of the present invention. [Industrial applicability]

[0070] The present invention can be used as a stand for smart devices such as smartphones, mobile phones, and tablet terminals, and also as a stand for smart devices such as smartphones, mobile phones, and tablet terminals with cases or covers attached. [Explanation of Symbols]

[0071] 1...Stand for smart devices, 1S...Space, 2…Smart device, 2A, 2B…Long side of smart device, 2C, 2D…Short side of smart device, 2S…Display side, 2R…Back 20...back panel, 20A, 20B...long side of the back panel, 20C, 20D...short side of the back panel, 21... Insertion piece, 30...holding part, 31...back holding part, 31a, 31b...fold line, 32...long side holding part, 33...short side holding part, 40...Long side portion, 41...Engaging recess, 50...Short side portion, 51...Engaging protrusion, 60...Support part, 61...First support part, 61A, 61B, 62A, 62B...Hypotenuses, 61C...Insertion part, 61T...Tip edge, 62...Second support part, 62C...Tongue piece, 63...Back plate part, 63A, 63B...Long side (fold line), 63C, 63D...Short side, 64...Insertion hole, 80...Front panel, 80a...Fold line, 81...Window section, 82...Hole for sound adjustment, P...Platform, 180...multilayer paper, 181...surface layer, 182...middle layer.

Claims

1. A stand for a smart device, comprising: a rear portion located on the back side of the smart device; a holding portion for holding the smart device; a long side portion extending from the rear portion; a short side portion extending from the rear portion; a space enclosed by the long side portion and the short side portion, extending from the back side toward the front side; and a support portion that maintains the front side of the space toward diagonally upward, The holding portion is positioned to protrude forward from the rear portion, and the smart device is held in the space at a position forward of the rear portion and behind the front side edges of the long side portion and the short side portion, and spaced apart from the rear portion, the long side portion and the short side portion. A stand for smart devices featuring the following characteristics.

2. The aforementioned retaining part is It has a rear support portion that protrudes forward from the rear portion and supports a part of the rear of the smart device in contact with it, a pair of long side support portions that support the smart device in contact with the long side of the smart device, and a pair of short side support portions that support the smart device in contact with the short side of the smart device. A stand for a smart device according to claim 1.

3. The smart device stand according to claim 1, having a front plate portion on the front side of the smart device, positioned away from the smart device's display, the front plate portion being provided with a window portion for viewing the smart device's display and an acoustic adjustment hole positioned between at least one of the long side portion and the short side portion.

4. The stand for a smart device according to claim 1, wherein the support portion comprises a back plate portion connected to the back portion, and a substantially trapezoidal first support portion and a second support portion extending from the back plate portion and narrowing in the direction of extension, with one hypotenuse longer than the other hypotenuse, and the leading ends of the first support portion and the second support portion in the direction of extension are connected to each other.

5. The stand for a smart device according to claim 1, wherein the back portion, the holding portion, the back portion and the long side portion are assembled from a single sheet material, the holding portion is formed to protrude from the back portion by cutting and bending, the long side portion and the short side portion extend from the back portion via fold lines, are folded forward from the back portion along the fold lines, and their edges are engaged and connected to each other.

6. The stand for a smart device according to any one of claims 5, wherein the support portion is assembled from a single sheet material and comprises a back plate portion and a substantially trapezoidal first support portion and a second support portion that extend from the back plate portion via a fold line and narrow in the direction of extension, with one hypotenuse being longer than the other hypotenuse, and the first support portion and the second support portion are folded via a fold line so that their leading ends in the direction of extension are close together and engaged.

7. The stand for a smart device according to claim 5 or 6, wherein the sheet material is paper made from pulp fibers, and the paper is a multilayer paper in which multiple paper layers are laminated.

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