Surface structure

Abstract

The cleaning performance of the garbage accumulated in the groove is improved. The surface structure includes a plate surface and a plurality of protruding strip portions arranged in a left-right direction of the plate surface, and a groove, which is a space between adjacent protruding portions in the left-right direction, has different inclination angles with respect to the plate surface in a first position and a second position.

Description

Technical Field

[0001] The present invention relates to a surface structure for placing an object. Background Art

[0002] In recent years, biomimetics, a technology that uses various functions of organisms, has attracted attention. As an example of using such organism-mimicking technology in the manufacture of products such as electrical appliances, Nature Technology (registered trademark) is known.

[0003] For example, in a refrigerator, a plurality of protrusions extending in the front-rear direction of a storage box for storing vegetables are provided at the bottom of the storage box, thereby forming a plurality of grooves between the protrusions (Japanese Patent Laid-Open No. 7-294113).

[0004] In this storage box, the storage box is reinforced by the protruding portion, and garbage and the like attached to the vegetables fall into the groove, thereby maintaining the hygienic storage state of the vegetables. Summary of the invention

[0005] However, in the above-mentioned prior art, there is a problem that the garbage accumulated in the groove is difficult to wipe off when cleaning the storage box.

[0006] One aspect of the present disclosure aims to provide a surface structure that achieves improved cleanability.

[0007] In order to solve the problem, one aspect of the present disclosure involves a surface structure comprising a plate surface and a plurality of protrusions, wherein the plurality of protrusions are arranged on the plate surface and arranged in a first direction parallel to the plate surface, the space between the adjacent protrusions in the first direction, i.e., the groove, is parallel to the plate surface and extends in a second direction intersecting the first direction, and at a first position and a second position, in a cross-sectional view cut by a plane orthogonal to the second direction, the side surface of the groove has different inclination angles relative to the plate surface, and the second position is located on the other side of one side or the other side of the second direction relative to the first position.

[0008] In order to solve the problem, one aspect of the present disclosure involves a surface structure comprising a plate surface and a plurality of protrusions, wherein the plurality of protrusions are arranged on the plate surface and arranged in a first direction parallel to the plate surface, the space between the adjacent protrusions in the first direction, i.e., the groove, is parallel to the plate surface and extends in a second direction intersecting the first direction, and the cross-sectional area of ​​the groove is different at a first position and a second position in a cross-sectional view cut by a plane orthogonal to the second direction, and the second position is located on the other side of one or the other of the second direction relative to the first position.

[0009] According to one aspect of the present disclosure, it is possible to provide a surface structure that achieves improved cleanability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a perspective view showing the refrigerator according to the first embodiment of the present disclosure. Figure 2 Yes means Figure 1 A three-dimensional view of a storage container included in the refrigerator shown. Figure 3 Yes means Figure 2 A top view of the storage container is shown. Figure 4 yes Figure 3 A cross-sectional view of the storage container taken along the line PP is shown. Figure 5 Yes means Figure 3 A top view of a surface structure included in the storage container shown. Figure 6 It is schematically shown Figure 5 A top view of a portion of a surface structure and a cross-sectional view of the surface structure are shown. Figure 7 is a schematic representation of Figure 6 The cross-sectional view shows the change in the inclination angle of the side surface and the corresponding change in the force applied to the side surface. Figure 8 is a schematic representation of Figure 6 The cross-sectional view shows the change in the position of the garbage corresponding to the change in the inclination angle of the side surface. Fig. 9 Yes means Figure 6 A cross-sectional view showing an example of the dimensions of the protrusions and grooves shown. Fig.10 It indicates schematically Figure 6 A top view of a modified example of a surface structure is shown. Fig.11 is schematically shown as Figure 6 A plan view of a portion of a surface structure body according to another modified example of the surface structure body shown and a cross-sectional view of the surface structure body. Fig.12 It is a perspective view showing a surface structure body according to a second embodiment of the present disclosure. Fig.13 It is schematically shown Fig.10 A top view of a portion of a surface structure and a cross-sectional view of the surface structure are shown. Fig.14 It is a plan view showing a planar structure according to a third embodiment of the present disclosure. Fig.15 It is schematically shown Fig.14A top view of a portion of a surface structure and a cross-sectional view of the surface structure are shown. DETAILED DESCRIPTION

[0011] [First embodiment] Hereinafter, an embodiment of the present disclosure will be described with reference to the accompanying drawings. In this embodiment, an example of applying the surface structure of the present disclosure to a storage container of a refrigerator is described. In addition, the following description is an example of the surface structure of the present disclosure, and the technical scope of the present disclosure is not limited to the illustrated example.

[0012] [Overview of Refrigerator] First, the overview of the refrigerator 1 according to the present embodiment will be described. Figure 1 1 is a perspective view showing a refrigerator 1 according to the present embodiment. Figure 1 As shown, the width direction of the refrigerator 1 when viewed from the front is sometimes called the left-right direction (first direction) X, the depth direction of the refrigerator 1 is called the front-back direction (second direction) Y, and the height direction of the refrigerator 1 is called the up-down direction Z.

[0013] like Figure 1 As shown, the refrigerator (storage room) 1 has a box-shaped insulated box body 11 with an open front. The interior of the insulated box body 11 is divided into a plurality of storage chambers 11A. The plurality of storage chambers 11A function as, for example, a refrigerator, a vegetable chamber, and a freezer. For example, a door 12 that can slide in the front-to-back direction is provided in front of the storage chamber 11A that functions as a vegetable chamber. The storage container 2 is detachably held on the back side of the door 12. The storage container 2 slides in the front-to-back direction Y as the door 12 is opened and closed, and can enter and exit the storage chamber 11A.

[0014] (Storage container) Figure 2 Yes means Figure 1 The three-dimensional view of the storage container 2 shown. In addition, Figure 3 Yes means Figure 2 The top view of the storage container 2 shown, Figure 4 yes Figure 3 The storage container 2 is shown in a cross-sectional view taken along the arrow PP.

[0015] like Figure 2 and Figure 3 As shown, the storage container (container) 2 is a box body with an upper opening, and the articles are stored therein. The storage container 2 has a front side portion 21 constituting the front of the storage container 2, a rear side portion 22 constituting the rear, a left side portion 23 constituting the left side, a right side portion 24 constituting the right side, and a bottom portion 25 constituting the bottom surface. The internal space of the storage container 2 surrounded by 25 becomes a storage space 2A for storing articles.

[0016] The storage container 2 has a surface structure 3 at the bottom 25 of the storage space 2A. The surface structure 3 constitutes a part of the bottom 25 of the storage container 2, and has a plurality of protrusions 32 arranged in the left-right direction X. The plurality of protrusions 32 arranged in the left-right direction X form a groove 33, which is a space between a plurality of adjacent protrusions 32. The inclination angle of the side of the groove 33 extending in the front-back direction Y of the surface structure 3 changes, thereby making it easy to wipe out the garbage accumulated in the groove 32. In addition, the details of the surface structure 3 will be described later.

[0017] In addition, if Figure 4 As shown, the storage container 2 further includes a recessed portion 26 at its bottom 25, which is provided at a position in front of the surface structure 3. The recessed portion 26 is located between the front side portion 21 of the storage container 2 and the surface structure 3, and is recessed further downward than the plate surface 31 of the surface structure 3. Thus, the garbage wiped from the groove 33 can fall into the recessed portion 26, and the garbage collected in the recessed portion 26 can be collected.

[0018] [Details of the surface structure] Next, the surface structure 3 is described in detail. Figure 5 express Figure 3 FIG. 2 is a top view of the surface structure 3 included in the storage container 2. Figure 6 (A) is a schematic representation Figure 5 A top view of a portion of the surface structure 3 is shown. Figure 6 (B) is Figure 6 The AA cross-sectional view of (A) is as follows: Figure 6 (C) is Figure 6 (A) is a cross-sectional view taken along the line BB. Figure 6 (D) is Figure 6 (A) is a cross-sectional view taken along the CC direction.

[0019] like Figure 5 and Figure 6 As shown, the planar structure 3 is a plate-shaped member having a thickness direction in the up-down direction Z. The planar structure 3 includes a plate surface 31 and a plurality of protrusions 32 arranged on the plate surface 31 .

[0020] (Board) The plate surface 31 is a surface on one side (upper side) of the surface and the back side of the surface structure 3 opposite to the up-down direction (thickness direction) Z, and is a flat surface. In the present embodiment, the plate surface 31 is a rectangular shape that is longer in the left-right direction X when viewed from above. In addition, the shape (outer shape) of the plate surface 31 is not particularly limited. The shape of the plate surface 31 can be appropriately changed according to the shape of the bottom 25 of the storage container 2, etc.

[0021] (Protrusion) A plurality of protrusions 32 are arranged on the plate surface 31. The plurality of protrusions 32 are arranged on the plate surface 31 at equal intervals I in the left-right direction X. The interval I is, for example, the distance between the center lines that divide each protrusion 32 in the left-right direction X into two equal parts in a plan view in two adjacent protrusions 32. The protrusions 32 protrude upward from the plate surface 31 and extend along the front-to-back direction Y. In the present embodiment, in the protrusion 32, the cross-sectional shape in the cross-sectional view cut by a plane orthogonal to the front-to-back direction Y (hereinafter sometimes referred to as the "cross-sectional view") is formed into a left-right symmetrical trapezoidal shape in which the lower base is larger than the upper base. The upper surface (upper base) 32A of the protrusion 32 is substantially parallel to the plate surface 31, and functions as a loading surface for loading objects such as vegetables.

[0022] like Figure 6 As shown in (B), when the width of the upper surface 32A of the protrusion 32 in the left-right direction X is set to l1 and the width of the lower surface 32B of the protrusion 32 is set to l2, the protrusion 32 has a region where the difference between the width 11 of the upper surface 32A and the width 11 of the lower surface 32B changes in the front-to-back direction Y. This region coincides with the change region R described later. In the present embodiment, in the region where the difference between the width 11 of the upper surface 32A and the width 11 of the lower surface 32B changes in the front-to-back direction Y, the width 11 of the upper surface 32A increases from the rear side toward the front side in the front-to-back direction Y, and the width 11 of the lower surface 32B is substantially constant in the front-to-back direction Y.

[0023] Furthermore, the cross-sectional shape of the protrusion 32 is not particularly limited. The cross-sectional shape of the protrusion 32 can be appropriately changed according to the type of the object to be placed, etc. The protrusion 32 may have a cross-sectional shape including a curved surface, for example. In addition, there is no particular limitation on the method of setting the protrusion 32 on the plate surface 31. For example, the plate surface 31 and the protrusion 32 may be a structure formed integrally by stamping or the like, or a structure in which the protrusion 32, which is separate from the plate surface 31, is fixed to the plate surface 31.

[0024] (groove) The groove 33 is a space between the protrusions 32 adjacent to each other in the left-right direction X. The groove 33 is formed between each of the adjacent protrusions 32 and extends in the front-rear direction Y. Each groove 33 has a pair of side surfaces 34 and a bottom surface 35 connecting the lower ends of the pair of side surfaces 34 to each other.

[0025] The pair of side surfaces 34 includes a first side surface 341 located on the left side of the groove 33 in the left-right direction X, and a second side surface 342 located on the right side of the groove 33 in the left-right direction X. For example, of two adjacent protrusions 32 sandwiching one groove 33, the protrusion 32 located on the left side is the first protrusion 321, and the protrusion 32 located on the right side is the second protrusion 322. In this case, the first side surface 341 is formed by the right side surface of the first protrusion 321, and the second side surface 342 is formed by the left side surface of the second protrusion 322. In addition, the bottom surface 35 is formed by the plate surface 31 sandwiched between the first protrusion 321 and the second protrusion 322.

[0026] In the surface structure 3, objects such as vegetables are placed on the upper surface 32A of the protrusion 32, and water or garbage discharged from the placed objects falls into the groove 33. As a result, the garbage does not come into direct contact with the objects, so the objects can be kept in a sanitary state. In this way, the groove 33 can be used to maintain a sanitary state, but on the other hand, there is a problem that the garbage accumulated in the groove 33 is difficult to wipe off during cleaning. Therefore, in the surface structure 3, by changing the inclination angle θ of the side surface 34 of the groove 33 extending along the front-back direction Y, the garbage accumulated in the groove 33 becomes easy to wipe off.

[0027] The groove 33 has a change region R in which the inclination angle θ of the side surface 34 changes continuously. In the present embodiment, the entire length of the groove 33 in the front-to-back direction Y constitutes the change region R, and in the change region R, the inclination angle θ of the side surface 34 changes continuously in a manner that increases from the rear side (inner side) toward the front side (nearer side) in the front-to-back direction Y. Figure 6 As shown in (B), the position at the rear side of the middle position PC of the length of the change region R in the front-to-back direction Y is the first position P1, and the position at the front side (near front side) relative to the middle position PC is the second position P2. In this case, the inclination angle θ of the first side surface 341 and the second side surface 342 changes in a manner that increases in the order of the first position P1, the middle position PC, and the second position P2 along the direction from the first position P1 side of the change region R toward the second position P2 side (hereinafter, sometimes referred to as the wiping direction W).

[0028] Figure 7 : is a cross-sectional view schematically showing the change of the force applied to the side surface 34 according to the change of the inclination angle θ of the side surface 34. Figure 8 1 is a cross-sectional view schematically showing changes in the position of the garbage D according to changes in the inclination angle θ of the side surface 34 .

[0029] like Figure 7As shown, when wiping the garbage attached to the groove 33 by, for example, pressing a rag, the way the ground force is applied to the side 34 during wiping changes according to the change in the inclination angle θ of the side 34. The smaller the inclination angle θ, the gentler the inclination of the side 34, and the greater the force component of the force applied by the side 34 to the garbage when wiping the garbage, the greater the force f1 that causes the garbage to float to the upper side. The larger the inclination angle θ, the steeper the inclination of the side 34, and the greater the force component of the force applied by the side 34 to the garbage when wiping the garbage, the greater the force f2 that causes the garbage to concentrate on the center side.

[0030] Therefore, if Figure 8 As shown, when the garbage D accumulated in the groove 33 is wiped in the direction of the steep inclination angle of the side surface 34, the component of the force f1 that gradually causes the garbage D to float upward becomes larger, so the garbage D floating on the gently inclined side surface 34 is easily concentrated on the upper side of the groove 33 (the opening side of the groove 33) as it moves toward the steeply inclined side surface 34.

[0031] Thus, when the garbage D accumulated in the groove 33 is wiped in the wiping direction W, the garbage D is easily floated on the side surface 34 of the first position P1 which is gently inclined on the upstream side of the wiping direction W. In addition, on the side surface 34 of the second position P2 which is steeply inclined on the downstream side of the wiping direction W, the garbage D floating on the upstream side is easily gathered in the center and upper side of the groove. Thus, the garbage D accumulated in the groove 33 is easily wiped off, and the cleaning performance of the groove 33 can be improved.

[0032] In addition, if Figure 6 As shown in (B), for example, the width of the opening side of the groove 3 in the cross-sectional view (i.e., the interval between the upper surfaces 32A of the adjacent protrusions 32) is set as the opening width L1, and the width of the bottom surface 35 in the cross-sectional view is set as the bottom surface width L2. In this case, the opening width L1 of the groove 3 at the second position P2 may be smaller than the opening width L1 of the groove 33 at the first position P1. Thus, when wiping the garbage D accumulated in the groove 33 in the wiping direction W, the opening width L1 of the groove 33 on the downstream side in the wiping direction W becomes smaller, so that the garbage D is easily concentrated in the center of the groove 33. Therefore, the cleaning performance of the groove 33 can be further improved.

[0033] In addition, the bottom width L2 of the groove 33 may be constant in the front-rear direction Y. That is, the bottom width L2 of each of the first position P1, the intermediate position PC, and the second position P2 may be the same. Thus, compared with the side surface 34, a rag or the like can easily reach the bottom surface 35 from which the garbage D is difficult to wipe off, and the garbage D accumulated on the bottom surface 35 can be easily wiped off.

[0034] In addition, it is preferred that the inclination angle θ of the side surface 34 at the first position P1 is less than 45 degrees, and the inclination angle θ of the side surface 34 at the second position P2 is greater than 45 degrees. When the inclination angle θ of the side surface 34 is less than 45 degrees, it is easy for a rag or the like to approach the garbage D accumulated in the groove 33. In addition, when wiping the garbage D, the component of the force f1 that causes the garbage D to float upward is greater than the component of the force f2 that causes the garbage D to be concentrated in the center. Therefore, it is easy to float the garbage D. On the other hand, when the inclination angle θ of the side surface 34 is greater than 45 degrees, when wiping the garbage D, the component of the force f2 that causes the garbage D to float upward is greater than the component of the force f1 that causes the garbage D to float upward. Therefore, the floating garbage D is easy to be concentrated above and in the center of the groove 33. In addition, in this case, the inclination angle θ of the side surface 34 at the middle position PC of the change region R1 may be less than 45 degrees. Thus, in at least half of the total length of the change region R1, the inclination angle of the side surface 34 is less than 45 degrees, so that the garbage D is effectively floated in this section, and the garbage D is collected in the remaining section where the inclination angle θ of the side surface 34 exceeds 45 degrees, which can be effectively wiped.

[0035] In addition, if Figure 6 (B)~ Figure 6 As shown in (D), for example, when the cross-sectional area of ​​the groove 33 in the cross-sectional view is CA, the cross-sectional area CA of the groove 33 at the second position P2 may be smaller than the cross-sectional area CA of the groove 33 at the first position P1. That is, the cross-sectional area CA of the groove 33 may also change in a manner that decreases in the order of the first position P1, the intermediate position PC, and the second position P2 toward the wiping direction W. Thus, when the garbage D accumulated in the groove 33 is wiped toward the wiping direction W, the garbage D is easily concentrated from the upstream side to the downstream side.

[0036] In addition, the planar structure 3 may further include a flat region F including a surface continuous with the bottom surfaces 35 of the plurality of grooves 33 at a position at least one of the rear side and the front side relative to the plurality of grooves 33 in the front-rear direction Y. Figure 5 In the example shown, the first flat area F1 is arranged at the rear side in the front-rear direction Y, and the second flat area F2 is arranged at the rear side in the front-rear direction Y. Thus, when cleaning the surface structure 3, the garbage D wiped from the grooves 33 can be concentrated in the second flat area F2, and the garbage D can be collected in a concentrated manner. In addition, the garbage D wiped from the grooves 33 can be dropped into the recessed portion 26 of the storage container 2 via the second flat area F2, and the garbage D concentrated in the recessed portion 26 can be collected in a concentrated manner.

[0037] Fig. 9 3 is a cross-sectional view showing an example of the dimensions of the protrusion 32 and the groove 33. Fig. 9As shown, for example, the width of the upper surface (upper base) 32A of the trapezoidal protrusion 32 is set to l1, the width of the lower surface (lower base) 32B of the protrusion 32 is set to l2, and the height of the protrusion 32 is set to H. In this case, in the cross-sectional view at the first position P1 of the groove 33, the height H of the protrusion 32 can be smaller than the width l2 of the lower surface 32B of the protrusion 32 (H<l2), or can be smaller than half the width l2 of the lower surface 32B of the protrusion 32 (H<L2 / 2). As a result, it is easy to reduce the inclination angle θ at the first position P1 of the groove 33 to less than 45 degrees, and it is easy to generate the force f1 that causes the garbage D to float upward at the side surface 34 at the first position P1.

[0038] In addition, when the width of the first side surface 341 in the left-right direction X is SA and the width of the second side surface 342 in the left-right direction X is SB, the sum of the width SA of the first side surface 341 and the width SB of the second side surface 342 may be larger than the width W2 of the bottom surface 35 of the groove 33 (SA+SB>W2). Thus, the side surface 34, which is easier to wipe off the dirt D than the bottom surface 35, can be enlarged, and the cleaning performance of the groove 33 can be improved.

[0039] Furthermore, in the surface structure 3, the inclination angle θ of the side surface 34 changes so as to increase toward the wiping direction W. However, the inclination angle θ may also change so as to increase toward the side opposite to the wiping direction W. One aspect of the present disclosure is that the force promoting the deformation of the garbage D can be appropriately changed by changing the inclination angle θ of the side surface 34 of the groove 33, and the inclination angle θ can be appropriately changed according to the type of the garbage D, etc.

[0040] In addition, in the surface structure 3, the inclination angle θ of each of the first side surface 341 and the second side surface 342 changes so as to increase toward the wiping direction W. However, it is sufficient that the inclination angle θ of at least one of the first side surface 341 and the second side surface 342 changes so as to increase toward the wiping direction W. Even with this structure, since the garbage D attached to one of the first side surface 341 and the second side surface 342 can be easily wiped off, the cleanability of the groove 33 can be improved.

[0041] In addition, in the surface structure 3, the groove 33 is formed by arranging a plurality of left-right symmetrical trapezoidal protrusions 32 on the plate surface 31. However, the groove 33 may be formed by arranging left-right asymmetrical protrusions 32 on the plate surface 31. Thus, the groove 33 having different inclination angles θ relative to the plate surface 31 can be formed on the first side surface 341 and the second side surface 342.

[0042] The surface structure 3 is an example of a structure in which a groove 33 is formed by arranging a plurality of protrusions 32 of the same shape on the plate surface 31. However, the groove 33 may be formed by arranging protrusions 32 of different shapes on the plate surface 31. Thus, the groove 33 of different cross-sectional shapes may be formed.

[0043] [Summary of Refrigerator] Thus, the refrigerator 1 of the present embodiment includes a storage container 2 for storing articles, and a surface structure 3 is provided at the bottom 25 of the storage container 2. The surface structure 3 includes a plate surface 31 and a plurality of ridges 32 arranged on the plate surface 31 and arranged in the left-right direction X. The groove 33 extending in the front-to-back direction Y as a space between the adjacent ridges 32 in the left-to-right direction X has a side surface 34 of the groove 33 having different inclination angles θ relative to the plate surface 31 in a cross-sectional view cut along a plane orthogonal to the front-to-back direction Y at a first position P1 and a second position P2 located on the front side of the first position P1 in the front-to-back direction Y.

[0044] In the surface structure 3, the inclination angle θ of the side surface 34 is different between the first position P1 and the second position P2 of the groove 33, and the inclination angle θ of the side surface 34 of the groove 33 changes. For example, when the garbage D accumulated in the groove 33 is wiped by pressing a rag, the way of applying force to the side surface 34 (garbage D) during wiping changes as the inclination angle θ of the side surface 34 changes. Therefore, by changing the inclination angle θ of the side surface 34, it is possible to appropriately generate a force that promotes deformation of the garbage D corresponding to the inclination angle θ, and the garbage D accumulated in the groove 32 becomes easy to wipe off. Therefore, according to this embodiment, the cleaning performance of the groove 32 can be improved.

[0045] In addition, in this embodiment, an example in which the surface structure 3 according to one aspect of the present invention is applied to the storage container 2 of the refrigerator 1 is described, but the surface structure 3 according to one aspect of the present invention can be widely applied to articles for placing objects.

[0046] [Variation Example] (Variation Example 1) Fig.10 It is schematically indicated Figure 6 FIG. 3 is a top view of a modified example of the surface structure 3. Fig.10 As shown, the surface structure 3A includes a variable region R1 where the inclination angle θ of the side surface 34 of the groove 33 changes, and a non-variable region (fixed region) R2 where the inclination angle θ of the side surface 34 does not change but is fixed. In the surface structure 3A, the variable region R1 is sandwiched in the front-to-back direction Y and the non-variable region R2 is arranged on both sides thereof.

[0047] In the change region R1, the first position P1 is located at the rear end of the change region R1, and the second position P2 is located at the front end of the change region R1. That is, in the surface structure 3A, the interval between the first position P1 and the second position P2 changes so that the inclination angle θ increases toward the wiping direction W.

[0048] The change rate of the inclination angle θ of the change region R1 (a value obtained by dividing the difference between the inclination angle θ at the first position P1 and the inclination angle θ at the second position P2 by the length of the change region R1 in the front-rear direction Y) is preferably in the range of 0.04<change rate<1.11.

[0049] For example, when the inclination angle θ at the first position P1 is 25 degrees, the inclination angle θ at the second position P2 is 50 degrees, and the length of the change area R1 in the front-to-back direction Y is 220 mm, the change rate of the inclination angle θ is 50°-25° / 220 mm=0.114° / mm.

[0050] When the rate of change of the inclination angle θ is within the above range, the effect of wiping off the dust D accumulated in the groove 33 can be easily obtained.

[0051] (Variant 2) Fig.11 (A) is a schematic representation Figure 6 A top view of a portion of a surface structure 3B which is a modified example of the surface structure 3 shown. Fig.11 (B) is Fig.11 The AA cross-sectional view of (A) is as follows: Fig.11 (C) is Fig.11 (A) is a cross-sectional view taken along the line BB. Fig.11 (D) is Fig.11 (A) is a cross-sectional view taken along the CC direction.

[0052] like Fig.11 As shown in FIG. 1 , in the surface structure 3B, the opening width L1 of the groove 33 is constant in the front-back direction Y. In addition, the bottom width L2 of the groove 3, the upper width 11 and the lower width 12 of the protrusion 32 change so as to become smaller toward the wiping direction W. Furthermore, the inclination angle θ of the side surface 34 of the groove 33 and the cross-sectional area CA of the groove 33 change so as to become larger toward the wiping direction W.

[0053] In the surface structure 3B having such a structure, by changing the inclination angle θ of the side surface 34, a force that promotes deformation of the dust D corresponding to the inclination angle θ can be appropriately generated. Therefore, the dust D accumulated in the groove 33 can be easily wiped off during cleaning.

[0054] [Second embodiment] In the following, other embodiments of the present disclosure are described. In addition, for the sake of convenience, components having the same functions as those described in the above embodiments are denoted by the same reference numerals, and their descriptions are not repeated.

[0055] The planar structure 30 of the present embodiment is mainly different from the planar structure 3 described above in that the protrusion 32 includes a curved surface.

[0056] Fig.12 : is a perspective view showing a surface structure 30 of this embodiment. Fig.13 (A) is a schematic representation Fig.12 A top view of a portion of the surface structure 30 is shown. Fig.13 (B) is Fig.13 The AA cross-sectional view of (A) is as follows: Fig.13 (C) is Fig.13 (A) is a cross-sectional view taken along the line BB. Fig.13 (D) is Fig.13 (A) is a cross-sectional view taken along the CC direction.

[0057] like Fig.12 and Fig.13 As shown, the protrusion 32 of the surface structure 30 is composed of a curved surface, and the curvature of the side surface 34 of the groove 33 is changed toward the wiping direction W, so that the gradient (inclination) of the side surface 34 changes.

[0058] The surface structure 30 changes in a manner such that the inclination angle θ of the side surface 34 of the groove 33 increases toward the wiping direction W. Therefore, at the first position P1 on the upstream side of the wiping direction W, the side surface 34 has a gentle slope. In addition, at the second position P2 on the downstream side of the wiping direction W, the side surface 34 has a steep slope. In the present embodiment, the inclination angle θ of the side surface 34 may be, for example, the angle formed by a tangent line that passes through the center position M of the left-right direction X of the bottom surface 35 of the groove 33 in the cross-sectional view and is connected to the protrusion 32, and the plate surface 31. Alternatively, the inclination angle θ of the side surface 34 may be, for example, the maximum inclination angle of the side surface 34 relative to the plate surface 31.

[0059] The surface structure 30 changes so that the cross-sectional area CA of the groove 33 decreases toward the wiping direction W. In the present embodiment, the cross-sectional area CA may be the area of ​​a space surrounded by the groove 33 and a straight line connecting the vertices T of the upper surfaces 32A of adjacent protrusions 32 in a cross-sectional view, for example.

[0060] In the surface structure 30 having the above configuration, when the garbage D accumulated in the groove 33 is wiped in the wiping direction W, the side surface 34 at the first position P1 with a gentle slope on the upstream side of the wiping direction W easily generates a force to float the garbage D. In addition, on the side surface 34 at the second position P2 with a steep slope on the downstream side of the wiping direction W, the floating garbage D is easily concentrated in the center and upper side of the groove. In addition, since the groove 33 is composed of a smooth curved surface without corners, it is easy to wipe off the garbage D accumulated in the groove 33. Therefore, according to this embodiment, the cleaning performance of the groove 33 can be improved.

[0061] In the present embodiment, the surface structure 30 is configured such that adjacent protrusions 32 in the left-right direction X are connected to each other at the center position M of the bottom surface 35. However, the surface structure 30 may be configured such that adjacent protrusions 32 are not connected to each other and the plate surface 31 is exposed between adjacent protrusions 32.

[0062] [Third embodiment] In the following, other embodiments of the present disclosure are described. In addition, for the sake of convenience, components having the same functions as those described in the above embodiments are denoted by the same reference numerals, and their descriptions are not repeated.

[0063] The major difference between the planar structure body 130 of the present embodiment and the planar structure bodies 3 and 30 described above is that the inclination angle θ of the side surface 34 of the groove 33 is constant.

[0064] Fig.14 1 is a top view showing the surface structure 130 of this embodiment. Fig.15 (A) schematic representation Fig.14 A top view of a portion of the surface structure 130 is shown. Fig.15 (B) is Fig.15 The AA cross-sectional view of (A) is as follows: Fig.15 (C) is Fig.15 (A) is a cross-sectional view taken along the line BB. Fig.15 (D) is Fig.15 (A) is a cross-sectional view taken along the CC direction.

[0065] like Fig.14 and Fig.15 As shown, the surface structure 130 , like the surface structure 3 described above, includes a trapezoidal protrusion 32 whose lower base is larger than its upper base, and grooves 33 are formed between adjacent protrusions 32 .

[0066] In the surface structure 130, the inclination angle θ of the side surface 34 of the groove 33 is constant in the front-back direction Y. In addition, the opening width L1, the bottom surface width L2 and the cross-sectional area CA of the groove 33 change in a manner that decreases toward the wiping direction W. Furthermore, the upper surface width 11 and the lower surface width 12 of the protrusion 32 change in a manner that increases toward the wiping direction W.

[0067] The cross-sectional area CA of the groove 33 of the surface structure 130 changes so as to decrease toward the wiping direction W. Therefore, when the dirt D accumulated in the groove 33 is wiped toward the wiping direction W, the dirt D is easily gathered from the upstream side to the downstream side. Therefore, the cleanability of the groove 33 can be improved.

[0068] Thus, the surface structure 130 of the present embodiment includes a plate surface 31 and a plurality of protrusions 32, and the plurality of protrusions 32 are arranged on the plate surface 31 and arranged in the left-right direction Y parallel to the plate surface 31. The space between the protrusions 32 adjacent to each other in the left-right direction X, i.e., the groove 33 is parallel to the plate surface 31 and extends in the front-rear direction Y orthogonal to the left-right direction, and the cross-sectional area CA of the groove 33 in the cross-sectional view is different at the first position P1 and the second position P2 located in front of the first position P1.

[0069] In the surface structure 130, the cross-sectional area CA of the groove 33 is different at the first position P1 and the second position P2, and the cross-sectional area CA of the groove 33 changes. Therefore, when the garbage D accumulated in the groove 33 is wiped by pressing a rag, for example, the garbage D is easily collected by wiping from the side with a larger cross-sectional area CA toward the side with a smaller cross-sectional area CA. Therefore, according to this embodiment, the cleaning performance of the groove 33 can be improved.

[0070] 〔Summarize〕 The surface structure involved in the first embodiment of the present invention comprises: a plate surface; and a plurality of protrusions, which are arranged on the plate surface and arranged in a first direction (left-right direction X) parallel to the plate surface, the space between the adjacent protrusions in the first direction, i.e., the groove is parallel to the plate surface and extends in a second direction (front-back direction Y) intersecting (orthogonal) with the first direction, and at a first position and a second position, in a cross-sectional view cut by a plane orthogonal to the second direction, the side surface of the groove has different inclination angles relative to the plate surface, and the second position is located on the other side of one side or the other side of the second direction relative to the first position.

[0071] In the above configuration, the inclination angle of the side surface is different between the first position and the second position of the groove, and the inclination angle of the side surface of the groove changes. For example, when wiping the garbage accumulated in the groove by pressing a rag, the way of applying force to the side surface (garbage) during wiping changes as the inclination angle of the side surface changes. Therefore, by changing the inclination angle of the side surface, it is possible to appropriately generate a force that promotes deformation of the garbage corresponding to the inclination angle, and the garbage accumulated in the groove is easily wiped off. Therefore, according to the above configuration, it is possible to improve the cleaning performance of the groove.

[0072] Based on the first embodiment, in the surface structure of the second embodiment of the present disclosure, it may be that the groove includes a changing region in which the inclination angle of the side surface increases from the one side toward the other side, the first position is located on the one side of the changing region, and the second position is located on the other side of the changing region.

[0073] In the above configuration, the groove includes a change region in which the inclination angle of the side changes in such a manner that the inclination angle of the side at the second position is greater than the inclination angle of the side at the first position. In other words, in the change region, the inclination angle of the side changes in such a manner that the side at the first position is relatively gently inclined and the side at the second position is relatively steeply inclined. Therefore, for example, when wiping garbage accumulated in the groove from one side (the first position side) of the second direction toward the other side (the second position side), a force that causes the garbage to float is easily generated on the gently inclined side, and the garbage that floats on the steeply inclined side is easily concentrated on the central side and the upper side (the opening side of the groove) of the groove. Therefore, according to the above configuration, the cleanability of the groove can be improved.

[0074] In addition to the second aspect, in a planar structure according to a third aspect of the present disclosure, in the cross-sectional view, an opening width of the groove at the second position may be smaller than an opening width of the groove at the first position.

[0075] In the above configuration, for example, when wiping garbage accumulated in the groove from one side to the other side in the second direction, the opening width of the groove becomes smaller toward the other side, so the garbage is easily concentrated in the center of the groove. Therefore, according to the above configuration, the cleaning performance of the groove can be further improved.

[0076] Based on the above-mentioned second or third embodiment, in the surface structure of the fourth embodiment of the present disclosure, the inclination angle of the side surface at the first position may be less than 45 degrees, and the inclination angle of the side surface at the second position may be greater than 45 degrees.

[0077] When the inclination angle of the side of the groove is less than 45 degrees, a rag or the like easily approaches the garbage accumulated in the groove, and a force is easily generated to float the garbage. On the other hand, when the inclination angle is greater than 45 degrees, the floating garbage tends to gather above and in the center of the groove.

[0078] In the surface structure of the fifth aspect of the present disclosure based on the fourth aspect, the inclination angle of the side surface at the middle position of the change region in the second direction may be less than 45 degrees.

[0079] According to the above configuration, the side inclination angle is less than 45 degrees in at least half of the total length of the changing area, so that the garbage is effectively floated in this section, and the garbage is collected and wiped in the remaining section where the side inclination angle exceeds 45 degrees.

[0080] In addition to any one of the second to fifth aspects, in a sixth aspect of the surface structure of the present disclosure, in the cross-sectional view, a cross-sectional area of ​​the groove at the second position may be smaller than a cross-sectional area of ​​the groove at the first position.

[0081] In the above configuration, the cross-sectional area of ​​the groove changes in such a way that the second position is smaller than the first position. Therefore, according to the above configuration, when wiping the garbage accumulated in the groove by pressing a rag, for example, the garbage is easily collected by wiping the garbage from one side with a larger cross-sectional area toward the other side with a smaller cross-sectional area.

[0082] Based on any one of the second to sixth methods, in the surface structure of the seventh method of the present disclosure, it may be that the groove includes a first side surface located on one side of the first direction and a second side surface located on the other side as the side surfaces, and the inclination angles of the first side surface and the second side surface increase from the one side toward the other side.

[0083] In the above configuration, the inclination angles of the two side surfaces of the groove change so as to increase from one side to the other side. Therefore, according to the above configuration, the cleaning performance of the groove can be further improved.

[0084] Based on any one of the first to seventh methods mentioned above, the surface structure of the eighth method of the present disclosure may also have a plurality of the grooves, and a flat area is also provided at a position relative to the plurality of grooves on at least one of the one side and the other side, and the flat area includes a surface continuous with the bottom surface of the plurality of grooves.

[0085] According to the above configuration, when cleaning the surface structure, the garbage wiped from the grooves can be collected in the flat area and collected collectively.

[0086] The ninth aspect of the surface structure disclosed in the present invention comprises: a plate surface; and a plurality of protrusions, which are arranged on the plate surface and arranged in a first direction parallel to the plate surface, wherein the space between the adjacent protrusions in the first direction, i.e., the groove, is parallel to the plate surface and extends in a second direction intersecting the first direction, and wherein the cross-sectional area of ​​the groove is different in a first position and a second position in a cross-sectional view cut by a plane orthogonal to the second direction, and the second position is located on the other side of one or the other of the second direction relative to the first position.

[0087] In the above configuration, the cross-sectional area of ​​the groove is different between the first position and the second position, and the cross-sectional area of ​​the groove changes. Therefore, when wiping the garbage accumulated in the groove by pressing a rag, for example, the garbage is easily gathered by wiping the garbage from the side with a larger cross-sectional area toward the side with a smaller cross-sectional area. Therefore, according to the above configuration, the cleaning performance of the groove can be improved.

[0088] A container according to a tenth aspect of the present disclosure is a container having a storage space for storing objects and having an opening at the top, and includes the surface structure according to any one of the first to ninth aspects at the bottom of the storage space.

[0089] According to the above configuration, it is possible to realize a container that allows easy wiping of the garbage accumulated in the groove at the bottom of the storage space.

[0090] In addition to the above-mentioned tenth aspect, in the container according to the eleventh aspect of the present invention, the bottom portion may further include a recessed portion, and the recessed portion may be provided at a position on the other side with respect to the surface structure.

[0091] According to the above configuration, when cleaning the container, the garbage wiped off from the groove can fall into the recessed portion, and the garbage collected in the recessed portion can be collected and recovered.

[0092] A storage according to a twelfth aspect of the present disclosure includes the container according to the tenth or eleventh aspect and a storage chamber provided so that the container can slide along the second direction.

[0093] According to the above configuration, it is possible to realize a refrigerator in which garbage accumulated in the groove at the bottom of the container provided in the storage chamber can be easily wiped off.

[0094] In addition, the present invention includes a technical concept focusing on the surface structure of petals and leaves of plants, especially rice leaves. That is, the present disclosure relates to bionics.

[0095] The present disclosure is not limited to the above-mentioned embodiments, and various changes can be made within the scope of the claims. The embodiments obtained by appropriately combining the technical solutions disclosed in different embodiments are also included in the technical scope of the present disclosure. Moreover, by combining the technical means disclosed in each embodiment, new technical features can be formed.

Claims

1. A surface structure, characterized in that: have: board surface; and a plurality of protrusions, which are arranged on the plate surface and arranged in a first direction parallel to the plate surface; The spaces between the adjacent protrusions in the first direction, i.e., the grooves, are parallel to the plate surface and extend in a second direction intersecting the first direction. At the first position and the second position, in a cross-sectional view cut along a plane orthogonal to the second direction, the side surfaces of the groove have different inclination angles relative to the plate surface, and the second position is located on the other side of one or the other of the second direction relative to the first position.

2. The surface structure according to claim 1, characterized in that The groove includes a changing region where the inclination angle of the side surface increases from the one side toward the other side, The first position is located on the one side of the change region, and the second position is located on the other side of the change region.

3. The surface structure according to claim 2, characterized in that: In the cross-sectional view, an opening width of the groove at the second position is smaller than an opening width of the groove at the first position.

4. The surface structure according to claim 2 or 3, characterized in that: The inclination angle of the side surface at the first position is less than 45 degrees, and the inclination angle of the side surface at the second position is greater than 45 degrees.

5. The surface structure according to claim 4, characterized in that: An inclination angle of the side surface at a middle position of the change region in the second direction is less than 45 degrees.

6. The surface structure according to claim 2 or 3, characterized in that: In the cross-sectional view, a cross-sectional area of ​​the groove at the second position is smaller than a cross-sectional area of ​​the groove at the first position.

7. The surface structure according to claim 2 or 3, characterized in that: The groove includes a first side surface located on one side of the first direction and a second side surface located on the other side as the side surfaces, The inclination angles of the first side surface and the second side surface increase from the one side toward the other side.

8. The surface structure according to any one of claims 1 to 3, characterized in that having a plurality of the grooves, A flat region is further provided at a position on at least one of the one side and the other side with respect to the plurality of grooves, wherein the flat region includes a surface continuous with bottom surfaces of the plurality of grooves.

9. A surface structure, characterized in that: have: board surface; and a plurality of protrusions, which are arranged on the plate surface and arranged in a first direction parallel to the plate surface; The spaces between the adjacent protrusions in the first direction, i.e., the grooves, are parallel to the plate surface and extend in a second direction intersecting the first direction. The cross-sectional areas of the groove are different between a first position and a second position in a cross-sectional view cut along a plane orthogonal to the second direction, and the second position is located on the other side of one or the other of the second direction relative to the first position.

10. A container having a storage space for storing objects and an upper opening, characterized in that: The surface structure according to any one of claims 1 to 3 and 9 is provided at the bottom of the storage space.

11. The container according to claim 10, characterized in that The bottom portion further includes a recessed portion provided at a position on the other side with respect to the planar structure.

12. A storage room, characterized by a child's aunt, having: The container of claim 10; and The storage chamber is configured so that the container can slide along the second direction.

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