Mattress, structure for fastening linen to mattress, and method for fastening linen to mattress

Abstract

To provide a mattress for facilitating fixing a linen material such as a sheet to the mattress, a structure for fixing the linen material to the mattress, and a method for fixing the linen material to the mattress.SOLUTION: A substantially rectangular parallelepiped-shaped mattress 5 includes: an upper surface and a lower surface having a substantially rectangular shape consisting of long sides 5Y and short sides 5X; and side surfaces 5c having a predetermined thickness between the upper surface and the lower surface. A loop 8 whose both ends 8a, 8b are fixed to the side surface is arranged at each end of the side surfaces 5C on the short sides 5X. A corner part of the substantially rectangular linen material for covering the mattress 5 is connected to the loop 8, so as to fix the linen material to the mattress 5.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a mattress, a structure for fastening linen to a mattress, and a method for fastening linen to a mattress. [Background technology]

[0002] Conventionally, as described in Patent Documents 1 and 2, a method for fixing linen materials such as sheets to a mattress has been known in which fixing belts or straps are provided at the four corners of an approximately rectangular parallelepiped mattress, and the four corners of the sheet are fixed to these fixing belts or straps to fix the sheet to the mattress. Furthermore, as described in Patent Document 3, a mattress is known in which, in order to move the mattress, handles are provided on the longitudinal sides of the approximately rectangular parallelepiped mattress, at two locations near the center of the mattress's thickness, and the mattress is moved by holding these handles. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6905904 [Patent Document 2] Patent No. 3345679 [Patent Document 3] Japanese Patent Application Publication No. 9-276083 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the devices described in Patent Documents 1 and 2, fastening tapes or straps are provided at each of the four corners of a substantially rectangular parallelepiped mattress, diagonally crossing the underside of each corner, and the corners of the sheet are passed through these fastening tapes or straps to fasten the sheet to the mattress. However, because the fastening tapes or straps are provided on the underside of the mattress, when the corners of the sheet are passed through the fastening tapes or straps, the fastening tapes or straps and the corners of the sheet that are passed through the underside of the mattress cannot be seen from above. This makes it difficult to fasten the corners of the sheet to the fastening tapes or straps, making it difficult to fasten the sheet to the mattress. Furthermore, if the fastening tapes or straps are provided on the top surface of the mattress, the fastened parts of the sheet are visible from the outside, which detracts from the aesthetic appearance. Furthermore, the handle described in Patent Document 3 is for moving the mattress, and does not take into consideration the fixing of the sheet placed on the mattress.

[0005] In view of the above-mentioned problems, the present invention aims to provide a mattress that makes it easier to fasten linen materials such as sheets to a mattress, a structure for fastening linen materials to a mattress, and a method for fastening linen materials to a mattress. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention is realized by the following configuration. (1) A first aspect of the present invention is a substantially rectangular parallelepiped mattress having upper and lower surfaces of a substantially rectangular shape formed by long and short sides, and side surfaces having a predetermined thickness between the upper and lower surfaces, wherein both ends of the side surfaces at the short sides of the mattress are provided. In the short side portion A loop portion is provided to be fixed to the side surface. The linen material can be secured to the mattress by tying the substantially rectangular corners of the linen material to the loop portions. It is something.

[0007] (2) In the configuration of (1) above, the loop portions are fixed to the respective ends of the side surfaces of the two short sides of the mattress.

[0008] (3) In the configuration of (1) or (2) above, the loop portion is fixed to the side surface at approximately the center in the thickness direction.

[0009] (4) In any one of the configurations (1) to (3) above, the mattress comprises an approximately rectangular mattress body having approximately rectangular upper and lower surfaces formed by long and short sides, and side surfaces having a predetermined thickness between the upper and lower surfaces, and a mattress cover covering at least the upper and side surfaces of the mattress body, and the loop portion is fixed to each end of the side surfaces at the short side portions of the mattress cover.

[0010] (5) A second aspect of the present invention is a structure for fastening a linen material to a mattress, which fastens a linen material covering a substantially rectangular parallelepiped mattress having a substantially rectangular upper surface and a lower surface formed by a long side portion and a short side portion, and a side surface having a predetermined thickness between the upper surface and the lower surface, and which fastens a linen material covering the mattress to each end of the side surface at the short side portion of the mattress, In the short side portion A loop portion is provided fixed to the side, and the corners of the approximately rectangular linen material are tied to the loop portion to secure the linen material to the mattress.

[0011] (6) In the configuration of (5) above, the loop portions are fixed to the respective ends of the side surfaces of the two short sides of the mattress, and the respective corners of the approximately rectangular linen material are tied to the loop portions to secure the linen material to the mattress.

[0012] (7) In the configuration of (5) or (6) above, the loop portion is fixed to the side surface at approximately the center in the thickness direction.

[0013] (8) In any one of the configurations (5) to (7) above, the approximately rectangular corner of the linen material is passed through the loop portion from bottom to top, thereby tying the approximately rectangular corner of the linen material to the loop portion and securing the linen material to the mattress.

[0014] (9) In any one of the configurations (5) to (8) above, the mattress comprises an approximately rectangular mattress body having approximately rectangular upper and lower surfaces formed by long and short sides, and side surfaces having a predetermined thickness between the upper and lower surfaces, and a mattress cover covering at least the upper and side surfaces of the mattress body, and the loop portion is fixed to each end of the side surfaces at the short side portions of the mattress cover.

[0015] (10) A third aspect of the present invention is a method for fastening a linen material to a mattress, the method comprising fastening a linen material covering a substantially rectangular parallelepiped mattress to the mattress, the linen material being made of substantially rectangular upper and lower surfaces formed by long and short sides, and side surfaces having a predetermined thickness between the upper and lower surfaces, the method comprising fastening a linen material covering the mattress to each end of the side surfaces at the short sides of the mattress, the end portions of which are In the short side portion A loop portion is provided fixed to the side, and the corners of the approximately rectangular linen material are tied to the loop portion to secure the linen material to the mattress. [Effects of the Invention]

[0016] According to the present invention, it is possible to provide a mattress that makes it easy to fasten linen materials such as sheets to the mattress, a structure for fastening linen materials to the mattress, and a method for fastening linen materials to the mattress. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a perspective view showing a mattress according to an embodiment of the present invention placed on a bed. [Figure 2] 1 is a perspective view showing a mattress body according to an embodiment of the present invention. [Figure 3] FIG. 10 is a perspective view showing a loop portion provided on a mattress. [Figure 4] FIG. 10 is a perspective view showing the operation of placing a sheet on a mattress, with the sheet placed on half of the mattress in the longitudinal direction. [Figure 5] Similarly, the mattress is shown covered with a sheet. [Figure 6] Similarly, the state where the sheet corresponding to the side of one long side of the mattress is folded over and placed under the mattress is shown. [Figure 7] Similarly, the state where the edge of the folded portion of the sheet and the corner of the sheet are aligned is shown. [Figure 8] 10 also shows the state in which the loop portion is expanded to expose the through-hole portion. [Figure 9] Similarly, it shows the state in which the string-like portion is passed through the through-hole portion from the lower side and passed through the upper side of the through-hole portion. [Figure 10] Similarly, the state where the string-like portion that has been passed through the upper side of the through-hole portion is pulled out to the upper side is shown. [Figure 11] Similarly, the state where the string-like portion that has been pulled out to the upper side is passed through the through-hole portion from the lower side again and passed through the upper side of the through-hole portion is shown. [Figure 12] Similarly, the state where the string-like portion that has been passed through the upper side of the through-hole portion is pulled out to the upper side is shown. [Figure 13] Similarly, the state where the string-like portion that has been passed through the upper side of the through-hole portion is pulled out to the upper side is shown. [Figure 14] Similarly, the state where the sheet corresponding to the side of one short side of the mattress is folded over and placed under the mattress is shown. [Figure 15] Similarly, the state after the sheet corresponding to the side of one short side of the mattress has been folded over and placed under the mattress is shown. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, modes for carrying out the present invention (hereinafter referred to as "embodiments") will be described in detail with reference to the accompanying drawings. Note that the same elements are designated by the same reference numerals throughout the description of the embodiments. In this embodiment, the longitudinal direction (also referred to as the Y direction) refers to the direction along the long sides of the rectangular parallelepiped mattress, and refers to the direction from the head to the legs when the user lies on the mattress. The lateral direction (also referred to as the X direction) refers to the direction perpendicular to the longitudinal direction, and refers to the direction along the short sides of the rectangular parallelepiped mattress. Furthermore, the thickness direction (also referred to as the Z direction) refers to the vertical direction perpendicular to the longitudinal and lateral directions.

[0019] (Embodiment) (Bed 1) As shown in FIG. 1, the bed 1 comprises a frame 2, legs 3 that support the frame 2 on the floor, and a support plate 4 that is placed on top of the frame 2. The frame 2 is a substantially rectangular frame with a predetermined rigidity to support the flat support plate 4 that receives the weight of the user, and is formed in a substantially rectangular shape overall. Furthermore, inside the substantially rectangular shape, vertical beams and horizontal beams are appropriately arranged in a mutually intersecting combination to reinforce the frame 2. Legs 3 for supporting the frame 2 on the floor are formed on all four sides of the underside of the frame 2. The number of legs 3 is not limited to four. The support plate 4 is a flat plate made of a cushioning material, and a plurality of rectangular plates smaller than the substantially rectangular frame 2 are laid over the entire upper surface of the frame 2. 1, the support plate 4 is depicted as a single plate. The frame 2 is not limited to the above. For example, the frame 2 itself may be a flat plate, in which case the support plate 4 does not need to be installed.

[0020] (Mattress 5) The mattress 5 is what the user lies directly on, and is made up of a mattress body 6 and a mattress cover 7 that covers the mattress body 6. The mattress 5 has an approximately rectangular parallelepiped shape (Figure 3), consisting of an approximately rectangular upper surface 5A (not shown) and lower surface 5B (not shown) each consisting of two long sides 5Y and two short sides 5X, and four side surfaces 5C having a predetermined thickness 5Z (not shown) between the upper surface 5A and the lower surface 5B. (6 mattresses) As shown in Figure 2, the mattress body 6 is placed on the support plate 4 and has an approximately rectangular shape consisting of an upper surface 6A and a lower surface 6B (not shown) that are approximately rectangular and have two long side portions 6Y and two short side portions 6X, and four side surfaces 6C that have a predetermined thickness 6Z between the upper surface 6A and the lower surface 6B. The mattress body 6 is formed of, for example, urethane foam, and the hardness of the urethane foam may be selected appropriately, such as medium-density high-resilience urethane foam, depending on the functions required of the mattress body 6. Furthermore, the material of the mattress body 6 is not limited to urethane foam, and other materials may be used. In this embodiment, the length of the long side 6Y of the mattress body 6 is 191 cm, the length of the short side 6X is 83 cm, and the thickness 6Z is 12 cm, but these dimensions are not limited to these.

[0021] (Mattress cover 7) As shown in Figures 1 and 3, the mattress cover 7 covers the entire mattress body 6. A cover large enough to cover the entire mattress body 6 is pre-formed into an approximately rectangular parallelepiped shape that is slightly larger than the mattress body 6, and the mattress body 6 is then wrapped in this mattress cover 7 to cover the entire mattress body 6. Therefore, like the mattress body 6, the mattress cover 7 has an approximately rectangular shape consisting of an upper surface 7A and a lower surface 7B (not shown) that are approximately rectangular and consist of two long side portions 7Y and two short side portions 7X, and four side surfaces 7C that have a predetermined thickness 7Z between the upper surface 7A and the lower surface 7B. In this embodiment, the mattress cover 7 is made of a material in which a urethane film is laminated onto a polyester knit fabric, but the material of the mattress cover 7 is not limited to this and other materials may also be used.

[0022] In this embodiment, a mattress cover 7 is prepared in advance, with its long side being slightly larger than twice the dimension obtained by adding the length of the short side 6X of the mattress body 6 to the thickness 6Z ((length of 6X + thickness 6Z) x 2 + α) and its short side being slightly larger than the dimension obtained by adding the length of the long side 6Y of the mattress body 6 to the thickness 6Z (length of 6Y + thickness 6Z + β).The short sides of the mattress cover 7 are joined together by gluing or sewing to form an approximately cylindrical mattress cover 7, and the mattress body 6 is then inserted into this approximately cylindrical mattress cover 7. Thereafter, the long sides of the mattress cover 7 are folded to fit the side surfaces 6C on the two short side portions 6X of the mattress body 6, and joined by gluing or sewing, etc., so that the entire mattress body 6 is covered with the mattress cover 7. Specifically, at the short side 6X of the mattress body 6, the mattress cover 7 located on the upper surface 6A side of the mattress body 6 and the mattress cover 7 located on the lower surface 6B side of the mattress body 6 are folded toward the side surface 6C of the mattress body 6, and then joined together at the center of the thickness 6Z of the mattress body 6. Therefore, the part where they are joined together is located at the center of the thickness 6Z of the mattress body 6.

[0023] The mattress cover 7 need only cover at least the upper surface 6A of the mattress body 6, part of the lower surface 6B (not shown) of the mattress body 6, and the four side surfaces 6C of the mattress body 6, and does not have to cover all surfaces of the mattress body 6. The mattress cover 7 has flat belt-shaped loop portions 8 at each end of the side surface 7C of the two short side portions 7X of the mattress cover 7. Therefore, the mattress cover 7 has flat belt-shaped loop portions 8 at a total of four locations, the four corners of the mattress cover 7.

[0024] (Loop section 8) 3, both ends 8a, 8b (sometimes referred to as both ends 8a, 8b) of the flat belt-shaped loop portion 8 are fixed to approximately the center in the thickness 7Z direction of the side surface 7C. Specifically, the mattress cover 7 located on the upper surface 6A side of the mattress body 6 and the mattress cover 7 located on the lower surface 6B side of the mattress body 6 are fixed together by sewing together the joined portions, for example. In addition, one end 8a of the flat belt-shaped loop portion 8 is sewn and fixed to the side 7C of the short side portion 7X closest to the side 7C of the long side portion 7Y, i.e., at the end of the side 7C of the short side portion 7X, approximately at the center in the thickness 7Z direction of the side 7C. In addition, the other end 8b is sewn and fixed to the side surface 7C of the short side portion 7X at a predetermined distance from one end 8a toward the center of the length of the short side portion 7X, at approximately the center in the thickness 7Z direction of the side surface 7C. As a result, a through-hole 8H is formed between the loop portion 8 and the side surface 7C of the short side portion 7X of the mattress cover 7. One end 8a may be fixed to the outermost end of the side surface 7C of the short side portion 7X.

[0025] The flat belt-shaped loop portion 8 has one end 8a and the other end 8b sewn and fixed to the side surface 7C at approximately the center in the thickness 7Z direction, and therefore, when the loop portion 8 is folded, the center portion 8c of the loop portion 8 is inverted relative to the both ends 8a and 8b, as shown in Fig. 3. In other words, when the loop portion 8 is folded, the both ends 8a and 8b have one surface, the front surface, of the loop portion 8 facing outward, whereas the center portion 8c has the other surface, the back surface, of the loop portion 8 facing outward. Therefore, it is desirable that the aforementioned specified dimensions be such that, when the loop portion 8 is folded, the central portion 8c of the loop portion 8 is contained within the thickness 7Z of the side surface 7C at the short side portion 7X.With such dimensions, the loop portion 8, and in particular the central portion 8c of the loop portion 8, will not protrude downward or upward beyond the thickness 7Z of the side surface 7C at the short side portion 7X, and will not interfere with other components. In this embodiment, the flat belt-shaped loop portion 8 is 12 cm long and 4 cm wide, and the predetermined dimension of the flat belt-shaped loop portion 8 (the dimension between the end of one end 8a of the loop portion 8 closer to the other end 8b and the end of the other end 8b of the loop portion 8 closer to the one end 8a) is 8 cm. The flat belt-shaped loop portion 8 is made of a thermoplastic resin such as polypropylene (PP). However, the material of the loop portion 8 is not limited to polypropylene (PP).

[0026] In the above embodiment, the mattress cover 7 that covers the entire mattress body 6 is provided with a flat belt-shaped loop portion 8, but the mattress cover 7 does not have to be provided, and if the mattress cover 7 is not provided, both ends 8a, 8b of the flat belt-shaped loop portion 8 are fixed by gluing or sewing to approximately the center in the thickness 6Z direction of the side surface 6C of the mattress body 6. Other details of the flat belt-shaped loop portion 8 are the same as those of the above embodiment in which the mattress cover 7 is provided with the flat belt-shaped loop portion 8. In this case, the above-mentioned predetermined dimensions, etc. are set in the same way as above. In the above embodiment, the loop portion 8 is in the form of a flat belt, but it may be in the form of a string, and the shape of the loop portion 8 is not limited to a flat belt.

[0027] The mattress cover 7 is covered with linen material such as a sheet 9. The sheet 9 is a roughly rectangular piece of cloth that is larger than the roughly rectangular parallelepiped mattress body 6. The sheet 9 is placed over the mattress cover 7 so as to cover the top surface 7A and four side surfaces 7C, and the four edges of the sheet 9 are folded under the bottom surface 7B. The linen material is not limited to the sheet 9 and may be a blanket or the like.

[0028] (How to set up Sheet 9) 4 to 15, a method for placing the sheet 9 on the mattress cover 7, tying the four corners of the sheet 9 to the loops 8, and setting the sheet 9 on the mattress cover 7 will be described step by step. If the mattress cover 7 is not provided, the method involves placing the sheet 9 on the mattress body 6, tying the four corners of the sheet 9 to the loops 8, and setting the sheet 9 on the mattress body 6.

[0029] First, the sheet 9 is folded in half and placed over approximately half of the mattress cover 7 in the longitudinal direction (Fig. 4), then the upper sheet 9 of the folded sheet 9 is stretched out and placed over the mattress cover 7 so that it covers the entire length and width of the mattress cover 7 without any wrinkles (Fig. 5). At this time, the sheet 9 is placed over the mattress cover 7 so that the center of the sheet 9 coincides with the center of the mattress cover 7 when viewed from above, and the sheet 9 is placed over the mattress cover 7 so that it covers the top surface 7A and all four side surfaces 7C of the mattress cover 7 and the folded portions that fold back onto the undersurface 7B (not shown) of the mattress cover 7 are even in both the longitudinal and width directions.

[0030] Next, we will explain how to set the sheet 9 on the mattress cover 7 at the portion corresponding to one of the loop portions 8 on one of the two short side portions 7X of the mattress cover 7, out of the four flat belt-shaped loop portions 8 at the four corners of the mattress cover 7. The folded portion of the sheet 9 corresponding to the side surface 7C of one long side 7Y of the mattress cover 7 is folded over onto the underside 7B (not shown) of the mattress cover 7 and placed on the underside 7B (not shown) of the mattress cover 7 (FIG. 6). Next, the end of the folded portion of the sheet 9 is joined to a corner of the sheet 9 (FIG. 7), and the joined portion is twisted to form a string-like portion. Next, the loop portion 8 is opened to expose the through-hole portion 8H (Fig. 8), and the string portion is passed through the through-hole portion 8H from the lower side thereof and pulled out to the upper side thereof (Figs. 9 and 10). In this way, by passing the substantially rectangular corner portion of the sheet 9 through the loop portion 8 from the bottom to the top, the substantially rectangular corner portion of the sheet 9 is tied to the loop portion 8, and the sheet 9 is secured to the mattress cover 7.

[0031] Subsequently, the string-like portion that has been pulled out to the upper side is again passed through the through-hole portion 8H from the lower side and pulled out to the upper side of the through-hole portion 8H (FIGS. 11 and 12). In this embodiment, the string-like portion is passed through the through-hole portion 8H twice, but the number of times it is passed through may be one or three times, and is not limited to two as long as the sheet 9 does not come off the mattress cover 7. Next, we will explain how to set the sheet 9 on the mattress cover 7 at the portion corresponding to the other loop portion 8 on one of the two short side portions 7X of the mattress cover 7, out of the four flat band-shaped loop portions 8 at the four corners of the mattress cover 7.

[0032] As shown in Figure 6, the folded portion of the sheet 9 corresponding to the side surface 7C on the other long side 7Y of the mattress cover 7 is folded over onto the underside 7B (not shown) of the mattress cover 7 and placed on the underside 7B (not shown) of the mattress cover 7. Next, as shown in FIG. 7, the end of the folded portion of the sheet 9 is joined to a corner of the sheet 9, and the joined portion is twisted to form a string-like portion. Next, as shown in Figure 8, the loop portion 8 is expanded to expose the through-hole portion 8H, and as shown in Figures 9 and 10, the string-like portion is passed through this through-hole portion 8H from the lower side and pulled out to the upper side of the through-hole portion 8H. Next, in the same manner as shown in FIG. 11, the string-like portion that has been pulled out to the upper side is again passed through the through-hole portion 8H from the lower side and pulled out to the upper side of the through-hole portion 8H (FIG. 13). As described above, the number of times that the string-like portion is passed through the through-hole portion 8H is not limited to two times.

[0033] Next, the folded portion of the sheet 9 corresponding to the side surface 7C on one of the short sides 7X of the mattress cover 7 is folded over onto the underside 7B (not shown) of the mattress cover 7 and placed on the underside 7B (not shown) of the mattress cover 7 (Figures 14 and 15). As a result, the loop portion 8 through which the string portion is passed is covered by the sheet 9 corresponding to the side surface 7C of one of the short sides 7X of the mattress cover 7. In this way, the setting of the sheet 9 on the mattress body 6 at the portion corresponding to the side surface 7C of one of the two short side portions 7X of the mattress cover 7 is completed. Finally, the sheet 9 corresponding to the side surface 7C of the other of the two short side portions 7X of the mattress cover 7 is set on the mattress cover 7 in the same manner as the sheet 9 corresponding to the side surface 7C of the one short side portion 7X, thereby completing the setting of the entire sheet 9 on the mattress cover 7.

[0034] In this embodiment, loop portions 8 are provided at each end of the side surface 7C of the two short side portions 7X of the mattress cover 7, with both ends 8a, 8b fixed to approximately the center of the side surface 7C in the thickness 7Z direction, so that when fastening the sheet 9 to the mattress cover 7 by tying the corners of the approximately rectangular shape of the sheet 9 to the loop portions 8, the loop portions 8 are easily visible and it is easy to fasten the sheet 9 to the mattress cover 7. As a result, the workability of fastening the sheet 9 to the mattress cover 7 is improved. Furthermore, both ends 8a, 8b of the loop portion 8 are fixed to each end of the side surface 7C of the two short side portions 7X of the mattress cover 7, approximately at the center in the thickness 7Z direction of the side surface 7C of the mattress cover 7. Therefore, even when the upper surface 7A and the lower surface 7B of the mattress cover 7 are reversed, that is, when the upper surface 7A is used as the lower surface and the lower surface 7B is used as the upper surface, the position of the loop portion 8 does not change, making it easy to see the loop portion 8 and fasten the sheet 9 to the mattress cover 7. As a result, the workability of fastening the sheet 9 to the mattress cover 7 is improved.

[0035] Furthermore, since the loop portions 8 are fixed to each end of the side surface 7C of the two short side portions 7X of the mattress cover 7, the end of the folded portion of the sheet 9 and the corner of the sheet 9 are twisted together to form a string-like portion, which is easier to pass through the through-hole portion 8H of the loop portions 8, compared to when the loop portions 8 are fixed closer to the center of the side surface 7C of the two short side portions 7X of the mattress cover 7.Furthermore, the string-like portion can be passed through the through-hole portion 8H multiple times, making it less likely for the sheet 9 to come off the mattress cover 7. In addition, the loop portion 8 through which the string portion is passed is covered by the sheet 9 corresponding to the side surface 7C of one of the short side portions 7X of the mattress cover 7 and is not visible from the outside, so the appearance is not marred after the sheet 9 is set on the mattress cover 7. Furthermore, since the loop portions 8 are provided, the mattress 5 can be carried by holding the loop portions 8 when moving it, improving portability of the mattress 5. In this case, since the loop portions 8 are provided at the four corners of the side surface 7C of the short side portion 7X of the mattress cover 7 as described above, the mattress can be carried by multiple people (for example, two people), and since the loop portions 8 are provided evenly at the four corners of the mattress cover 7, it is well-balanced and easy to carry, further improving portability.

[0036] (Other embodiments) In the previous embodiment, the mattress body 6 was formed from one type of urethane foam, but an embodiment in which the mattress body 6 is formed from multiple types of urethane foam will be described below. As in the previous embodiment, the mattress body 6 is placed on the support plate 4 and has an approximately rectangular shape consisting of an upper surface 6A and a lower surface 6B (not shown) that are approximately rectangular and consist of two long side portions 6Y and two short side portions 6X, and four side surfaces 6C that have a predetermined thickness 6Z between the upper surface 6A and the lower surface 6B (not shown). In this embodiment, the upper mattress body 61, which is the part above the center in the thickness 6Z direction of the mattress body 6, and the lower mattress body 62, which is the part below the center in the thickness 6Z direction of the mattress body 6, are formed separately, and then these are combined to form an integrated mattress body 6.

[0037] The upper mattress body 61 is made of a relatively soft material, such as a medium-density, high-resilience urethane foam that prioritizes sleeping comfort, while the lower mattress body 62 is made of a relatively soft material, such as a high-resilience urethane foam that prioritizes body pressure distribution. The upper mattress body 61 and the lower mattress body 62 are then joined together with an adhesive or sewn together to form an integrated body. In particular, in this embodiment, the position of the loop portion 8 does not change even when the upper mattress body 61 is used on the bottom side and the lower mattress body 62 is used on the top side, so the loop portion 8 is highly visible and it is easy to fasten the sheet 9 to the mattress cover 7. As a result, the workability when fastening the sheet 9 to the mattress cover 7 is improved.

[0038] As described above, this specification also discloses a linen fastening structure for a mattress 5, which fastens a sheet 9, which is a substantially rectangular piece of linen material that covers the mattress 5, to the mattress 5, which is a substantially rectangular parallelepiped mattress 5 consisting of an approximately rectangular upper surface 5A and lower surface 5B formed by a long side portion 5Y and a short side portion 5X, and a side surface 5C having a predetermined thickness 5Z between the upper surface 5A and the lower surface 5B, and which has loop portions 8 at each end of the side surface 5C at the short side portion 5X of the mattress 5, with both ends 8a, 8b fixed to the side surface 5C, and the substantially rectangular corners of the sheet 9 are tied to the loop portions 8 to fasten the sheet 9 to the mattress 5. This specification also discloses a method for fastening linen to a mattress 5, which fastens a sheet 9, which is a substantially rectangular piece of linen material that covers the mattress, to the mattress 5, which is a substantially rectangular parallelepiped mattress consisting of an upper surface 5A and a lower surface 5B of a substantially rectangular shape formed by a long side portion 5Y and a short side portion 5X, and a side surface 5C having a predetermined thickness 5Z between the upper surface 5A and the lower surface 5B, in which loop portions 8, both ends 8a, 8b of which are fixed to the side surface 5C, are provided at each end of the side surface 5C at the short side portion 5X of the mattress 5, and the substantially rectangular corners of the sheet 9 are tied to the loop portions 8 to fasten the sheet 9 to the mattress 5.

[0039] Although the present invention has been described above using embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above embodiments. Furthermore, it is clear from the claims that such modifications and improvements can also be included within the technical scope of the present invention. [Explanation of symbols]

[0040] 1. Bed 2...Frame 3...legs 4...Support plate 5. Mattress 6...Mattress body 7...Mattress cover 5X, 6X, 7X…Short side 5Y, 6Y, 7Y...long side 5Z, 6Z, 7Z...Thickness 5A, 6A, 7A...Top surface 5B, 6B, 7B...bottom surface 5C, 6C, 7C...side 8...Loop section 8a, 8b...Ends (both ends) 9...Sheets (linen)

Claims

1. A substantially rectangular parallelepiped mattress having substantially rectangular upper and lower surfaces each having a long side portion and a short side portion, and a side surface having a predetermined thickness between the upper surface and the lower surface, A loop portion is provided at each end of the side surface of the short side portion of the mattress, and both ends of the loop portion are fixed to the side surface of the short side portion, The mattress can be secured to the linen material by tying the corners of the substantially rectangular shape of the linen material to the loop portions.

2. The mattress according to claim 1 , wherein the loop portions are fixed to the ends of the side surfaces of the two short sides of the mattress.

3. The mattress according to claim 1 or 2, wherein the loop portion is fixed to the side surface at a substantially central portion in the thickness direction.

4. 4. The mattress according to claim 1, wherein the mattress comprises an approximately rectangular mattress body having upper and lower surfaces of an approximately rectangular shape formed by long and short sides, and side surfaces having a predetermined thickness between the upper and lower surfaces, and a mattress cover that covers at least the upper and side surfaces of the mattress body, and the loop portion is fixed to each end of the side surfaces at the short side portions of the mattress cover.

5. A linen fastening structure for a mattress, which fastens a substantially rectangular linen covering a substantially rectangular parallelepiped mattress having substantially rectangular upper and lower surfaces each having a long side portion and a short side portion, and a side surface having a predetermined thickness between the upper and lower surfaces, A linen securing structure for a mattress, in which a loop portion is provided at each end of the side surface of the short side portion of the mattress, both ends of which are fixed to the side surface of the short side portion, and the approximately rectangular corners of the linen material are tied to the loop portion to secure the linen material to the mattress.

6. A linen securing structure for a mattress as described in claim 5, wherein the loop portions are fixed to each end of the side surfaces of the two short sides of the mattress, and each corner of the approximately rectangular linen material is tied to the loop portions to secure the linen material to the mattress.

7. 7. The linen fastening structure for a mattress according to claim 5, wherein the loop portion is fixed to a substantially central portion of the side surface in the thickness direction.

8. A linen securing structure for a mattress as described in any one of claims 5 to 7, wherein the approximately rectangular corner of the linen material is passed through the loop portion from bottom to top, thereby tying the approximately rectangular corner of the linen material to the loop portion and securing the linen material to the mattress.

9. 9. A linen fastening structure for a mattress as described in any one of claims 5 to 8, wherein the mattress comprises an approximately rectangular mattress body having upper and lower surfaces of approximately rectangular shape formed by long and short sides, and side surfaces having a predetermined thickness between the upper and lower surfaces, and a mattress cover covering at least the upper and side surfaces of the mattress body, and the loop portion is fixed to each end of the side surfaces at the short side portions of the mattress cover.

10. A method for fastening linen material to a mattress, the method comprising fastening a substantially rectangular linen material covering a substantially rectangular parallelepiped mattress to the mattress, the mattress having substantially rectangular upper and lower surfaces each having a long side portion and a short side portion, and a side surface having a predetermined thickness between the upper and lower surfaces, the method comprising: A method for fastening linen to a mattress includes providing loop portions at each end of the side surface of the short side of the mattress, both ends of which are fixed to the side surface of the short side, and tying the approximately rectangular corners of the linen to the loop portions to fasten the linen to the mattress.

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