mattress

Abstract

To provide a mattress that reduces pressure on the user's abdomen and other areas when the electric bed is raised, while suppressing cost increases. [Solution] The mattress comprises a mattress body and a cover covering the mattress body. The first region of the cover facing the user's buttocks and the mattress body are less slippery than the second region of the cover facing the user's back and lower limbs and the mattress body.

Description

Technical Field

[0001] The embodiment relates to a mattress.

Background Art

[0002] In recent years, electric beds have been used in medical facilities and nursing facilities. When a mattress is placed on an electric bed and the electric bed raises the back while the user is lying supine on the mattress, the upper body of the user can be lifted. In an electric bed, there is a problem that when the back is raised, the abdomen, chest, neck, etc. (hereinafter referred to as "abdomen, etc.") of the user are compressed.

[0003] In Patent Document 1, in order to solve this problem, when raising the back, the back bottom of the electric bed is slid upward. In addition, in Patent Document 2, the mattress is configured by laminating a plurality of mat layers, and when raising the back, the mat layers are slid relative to each other to solve this problem. However, in the method disclosed in Patent Document 1, the configuration of the electric bed becomes complicated and the cost of the electric bed increases. In addition, in the method disclosed in Patent Document 2, the configuration of the mattress becomes complicated and the cost of the mattress increases.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] An embodiment has been made in view of the above problems, and an object thereof is to provide a mattress that can reduce the compression of the abdomen, etc. of a user when an electric bed is raised while suppressing an increase in cost. [Means for solving the problem]

[0006] The mattress according to this embodiment comprises a first member facing the user's buttocks and a second member facing the user's back and lower limbs. The second member is more slippery than the first member.

[0007] The mattress according to this embodiment comprises a mattress body, a first sheet whose portion is at least partially positioned on the mattress body and facing the user's buttocks, and a second sheet whose portion is at least partially positioned on the mattress body and facing the user's back and lower limbs. The second sheet is more slippery than the first sheet.

[0008] The mattress according to this embodiment comprises a mattress body and a cover fabric that covers the mattress body. The first region of the cover fabric facing the user's buttocks and the mattress body are less slippery than the second region of the cover fabric facing the user's back and lower limbs and the mattress body. [Effects of the Invention]

[0009] According to this embodiment, it is possible to realize a mattress that reduces pressure on the user's abdomen, etc., when the electric bed is raised, while suppressing an increase in costs. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a perspective view showing a mattress according to the first embodiment. [Figure 2] Figure 2(a) is a cross-sectional view showing a mattress according to the first embodiment, and Figure 2(b) is a cross-sectional view showing the upper layer of the mattress. [Figure 3] Figures 3(a) to 3(c) show a method for manufacturing a mattress according to the first embodiment. [Figure 4] Figure 4 is a diagram illustrating the operation of the mattress according to the first embodiment. [Figure 5]FIG. 5 is a cross-sectional view showing the upper layer portion of the mattress according to the first modified example of the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing the upper layer portion of the mattress according to the second modified example of the first embodiment. [Figure 7] FIG. 7 is a cross-sectional view showing the main body portion of the mattress according to the third modified example of the first embodiment. [Figure 8] FIG. 8 is a cross-sectional view showing the main body portion of the mattress according to the fourth modified example of the first embodiment. [Figure 9] FIG. 9 is a cross-sectional view showing the main body portion of the mattress according to the fifth modified example of the first embodiment. [Figure 10] FIG. 10 is a cross-sectional view showing the upper layer portion of the mattress according to the sixth modified example of the first embodiment. [Figure 11] FIG. 11(a) is a perspective view showing the mattress according to the second embodiment, and FIG. 11(b) is a cross-sectional view showing the upper layer portion of the mattress according to the second embodiment. [Figure 12] FIGS. 12(a) to (c) are diagrams showing a method for manufacturing the mattress according to the second embodiment. [Figure 13] FIG. 13 is a perspective view showing the mattress according to the third embodiment. [Figure 14] FIG. 14 is a perspective view showing the mattress according to the fourth embodiment. [Figure 15] FIG. 15(a) is a perspective view showing the mattress according to the fourth embodiment, and FIG. 15(b) is a cross-sectional view showing the mattress according to the fourth embodiment. [Figure 16] FIG. 16 is a perspective view showing the side fabric according to the modified example of the fifth embodiment. [Figure 17] FIGS. 17(a) and (b) are diagrams showing an example of a method for distinguishing between lubricity and anti-slip properties.

MODE FOR CARRYING OUT THE INVENTION

[0011] <First Embodiment> ​ FIG. 2(a) is a cross-sectional view showing the mattress according to this embodiment, and FIG. 2(b) is a cross-sectional view showing the upper layer portion of the mattress.

[0012] As shown in FIGS. 1 and 2(a), in the mattress 1 according to this embodiment, a mattress main body portion 10 and a side fabric 30 are provided. The mattress main body portion 10 has a predetermined thickness and ensures the elasticity and heat retention required for the mattress 1. The side fabric 30 is a cover that covers the mattress main body portion 10 and is formed of cloth or a sheet.

[0013] The side fabric 30 is in contact with the mattress main body portion 10 but is not fixed to the mattress main body portion 10. For example, gathers are formed in the side fabric 30, and the side fabric 30 is movable with respect to the mattress main body portion 10 within a range where the gathers can absorb. In FIGS. 1 and 2(a), for the sake of easy viewing of the drawing, the side fabric 30 is drawn larger with respect to the mattress main body portion 10 and is drawn separated from the mattress main body portion 10.

[0014] In the mattress main body portion 10, a lower layer portion 11, a middle layer portion 12, and an upper layer portion 13 are provided. A plurality of slits 11a extending in the short side direction or the long side direction of the mattress 1 may be formed in the lower layer portion 11. The middle layer portion 12 is disposed on the lower layer portion 11. A plurality of convex portions 12a arranged in a matrix may be formed in the middle layer portion 12. The upper layer portion 13 is disposed on the middle layer portion 12.

[0015] In the upper layer portion 13, a slippery member 14, an anti-slip member 15, and a slippery member 16 are provided and are arranged in this order along the long side direction of the mattress 1. When the user lies on the mattress 1 face up, the user's back faces the slippery member 14 through the side fabric 30, the user's buttocks face the anti-slip member 15 through the side fabric 30, and the user's lower limbs face the slippery member 16 through the side fabric 30.

[0016] As shown in Figure 2(b), the sliding member 14, the anti-slip member 15, and the sliding member 16 are provided with a base portion 21 and a fabric portion 22. In the sliding member 14 and the sliding member 16, the fabric portion 22 is positioned on the base portion 21. Therefore, the upper surfaces of the sliding member 14 and the sliding member 16 are made of the fabric portion 22. In the anti-slip member 15, the fabric portion 22 is positioned below the base portion 21. Therefore, the upper surface of the anti-slip member 15 is made of the base portion 21.

[0017] The fabric 22 is integrally bonded to the base 21. "Integratedly bonded" means that the strength of the bonding surface is higher than the strength of the base 21 itself or the fabric 22 itself. For example, if a force is applied to the base 21 and the fabric 22 in a direction that separates them from each other, the fabric 22 will not separate from the base 21, but will either break inside the base 21 or the fabric 22 will tear.

[0018] The base portion 21 is formed of a material with a relatively high coefficient of friction, and for example, at least the surface contains urethane or silicone. For example, the entire base portion 21 may be formed of urethane, or a base material made of a suitable material may be coated with urethane or silicone. The base material may contain, for example, polyester or nylon.

[0019] The fabric 22 is made of a material with a relatively low coefficient of friction, such as polyester, polyurethane, nylon, or a blend thereof. Since the coefficient of friction of the fabric 22 is lower than that of the base portion 21, the fabric 22 is more slippery than the base portion 21. Therefore, the sliding members 14 and 16 are more slippery than the anti-slip member 15. More specifically, the sliding member 14 and the side fabric 30 are more slippery than the anti-slip member 15 and the side fabric 30, and the sliding member 16 and the side fabric 30 are more slippery than the anti-slip member 15 and the side fabric 30.

[0020] In this specification, the property of being slippery will be expressed as "slippery," and the property of being non-slippery will be expressed as "anti-slip properties," but these expressions are relative. Also, in Figures 1, 11(a), 13, and 14, areas with slippery properties are shown in gray for clarity.

[0021] The outer fabric 30 can be, for example, one that prioritizes ease of wiping and one that prioritizes breathability. Those that prioritize ease of wiping are, for example, made from polyester, polyurethane, nylon, or a blend thereof, or a cloth made from natural fibers such as cotton that is coated with a resin such as polyester. Those that prioritize breathability are made from cotton or urethane, etc. However, the material of the outer fabric 30 is not limited to these.

[0022] Next, a description of the manufacturing method for the mattress according to this embodiment will be provided. Figures 3(a) to 3(c) show the method for manufacturing a mattress according to this embodiment. As shown in Figure 3(a), the laminating device 200 is provided with drive rollers 201 to 203, driven rollers 204 and 205, and a burner 206. A strip-shaped base portion 21 is wound in a coil shape around the drive roller 201. A strip-shaped fabric 22 is wound in a coil shape around the drive roller 202.

[0023] The base portion 21 moves from the drive roller 201 toward the driven roller 204, and one side is heated by the burner 206 near the driven roller 204. Multiple burners 206 are arranged along the width direction of the base portion 21. The fabric 22 moves from the drive roller 202 toward the driven roller 205. Then, between the driven roller 204 and the driven roller 205, the fabric 22 is pressed against the heated surface of the base portion 21, thereby bonding the fabric 22 to the base portion 21 and forming the composite material 23. The composite material 23 is wound up by the drive roller 203. In this way, a strip-shaped composite material 23 is formed, as shown in Figure 3(b). In the composite material 23, the fabric 22 is integrally bonded to the upper surface of the base portion 21.

[0024] Next, as shown in Figure 3(c), the composite material 23 is cut to a predetermined size to form the sliding member 14 and the sliding member 16. Meanwhile, the cut composite material 23 is turned over to prepare the anti-slip member 15. The sliding member 14 and the anti-slip member 15 are then bonded together with adhesive 24, and the anti-slip member 15 and the sliding member 16 are bonded together with adhesive 25. This creates the upper layer 13. The upper surface of the sliding member 14 and the sliding member 16 is covered with fabric 22, and the lower surface of the anti-slip member 15 is covered with fabric 22.

[0025] Next, as shown in Figures 1 and 2(a), the lower layer 11 and the middle layer 12 are prepared, and the lower layer 11, the middle layer 12, and the upper layer 13 are stacked in this order. This creates the mattress body 10. Next, the cover fabric 30 is attached to the mattress body 10. This completes the manufacturing of the mattress 1.

[0026] Next, the operation of the mattress 1 according to this embodiment will be described. Figure 4 is a diagram illustrating the operation of the mattress according to this embodiment. As shown in Figure 4, when the mattress 1 is placed on an electric bed (not shown) and the user 100 lies on their back on the mattress 1, the user 100's back 101 comes into contact with the sliding member 14 via the cover fabric 30 (see Figure 1), the buttocks 102 come into contact with the anti-slip member 15 via the cover fabric 30, and the lower limbs 103 come into contact with the sliding member 16 via the cover fabric 30.

[0027] In this state, when the electric bed raises the backrest, the cover fabric 30 is less likely to slip against the anti-slip member 15, so the user's buttocks 102 are less likely to move relative to the mattress 1. This stabilizes the user's position relative to the mattress 1. On the other hand, the cover fabric 30 is more likely to slip against the slippery members 14 and 16, so the user's back 101 moves towards the head with the cover fabric 30, and the user's lower limbs 103 move towards the feet with the cover fabric 30. This reduces pressure on the user's abdomen, etc.

[0028] Next, the effects of this embodiment will be described. In this embodiment, when manufacturing the upper layer 13 of the mattress 1, a base portion 21 and a fabric 22 are prepared, and by deciding whether or not to place the fabric 22 on the base portion 21, it is possible to choose whether to provide slipperiness or anti-slipness to the upper surface of the mattress 1. As a result, the manufacturing cost of the mattress 1 is low. Furthermore, according to this embodiment, the upper layer 13 can be manufactured from a single composite material 23 cut to the size of the upper layer 13, thus reducing the manufacturing cost of the mattress 1. In this way, according to this embodiment, it is possible to realize a mattress 1 that can reduce pressure on the user's abdomen, etc., when the electric bed is raised, while suppressing an increase in costs.

[0029] <First variation of the first embodiment> Figure 5 is a cross-sectional view showing the upper layer of the mattress according to this modified example. As shown in Figure 5, in the upper layer 13a of the mattress according to this modified example, the fabric 22 of the sliding member 14 extends over the end of the anti-slip member 15 on the sliding member 14 side, and the fabric 22 of the sliding member 16 extends over the end of the anti-slip member 15 on the sliding member 16 side. As a result, the adhesives 24 and 25 are covered by the fabric 22. The upper surface of the anti-slip member 15, excluding the end on the sliding member 14 side and the end on the sliding member 16 side, is not covered with fabric 22, and the base portion 21 is exposed.

[0030] Normally, the solidified adhesives 24 and 25 are harder than the base portion 21. Therefore, the adhesives 24 and 25 may cause discomfort to the user. According to this modified example, since the adhesives 24 and 25 are covered by the fabric 22, the discomfort caused by the adhesives 24 and 25 to the user can be reduced. The configuration, manufacturing method, operation, and effects of this modified example are the same as those of the first embodiment.

[0031] <Second variation of the first embodiment> Figure 6 is a cross-sectional view showing the upper layer of the mattress according to this modified example. As shown in Figure 6, the upper layer 13b of the mattress according to this modified example differs from the upper layer 13a of the first modified example of the first embodiment in that adhesives 24 and 25 are not provided, but adhesives 26a and 26b are provided.

[0032] Adhesive 26a is placed between the portion of the fabric 22 of the lubricating member 14 that extends over the end of the anti-slip member 15 and the base portion 21 of the anti-slip member 15. In this way, adhesive 26a adheres the fabric 22 of the lubricating member 14 to the base portion 21 of the anti-slip member 15. Adhesive 26b is placed between the portion of the fabric 22 of the lubricating member 16 that extends over the end of the anti-slip member 15 and the base portion 21 of the anti-slip member 15. In this way, adhesive 26b adheres the fabric 22 of the lubricating member 16 to the base portion 21 of the anti-slip member 15.

[0033] Since the adhesives 26a and 26b are arranged along the upper surface of the base portion 21 of the anti-slip member 15, they have a planar shape that spreads horizontally. In contrast, the adhesives 24 and 25 in the first modification of the first embodiment have a vertical shape that spreads vertically. According to this modification, by providing the planar adhesives 26a and 26b instead of the vertical adhesives 24 and 25, the discomfort felt by the user can be reduced. The configuration, manufacturing method, operation, and effects of this modification other than those described above are the same as those of the first modification of the first embodiment.

[0034] <Third Modification of the First Embodiment> Figure 7 is a cross-sectional view showing the mattress body according to this modified example. As shown in Figure 7, the mattress body portion 10a according to this modified example is provided with a lower layer portion 11, a middle layer portion 12, an adhesive 26, and an upper layer portion 13c. The upper layer portion 13c is provided with a lubricating member 14, an anti-slip member 15, and a lubricating member 16. The configuration of the lubricating member 14, the anti-slip member 15, and the lubricating member 16 is the same as in the first embodiment. The adhesive 26 is arranged over substantially the entire area between the middle layer portion 12 and the upper layer portion 13c. As a result, the adhesive 26 adheres the middle layer portion 12 to the lubricating member 14, the middle layer portion 12 to the anti-slip member 15, and the middle layer portion 12 to the lubricating member 16. The adhesive 26 is formed, for example, by being sprayed onto the lower surface of the upper layer portion 13c, bonded to the middle layer portion 12, and then solidified.

[0035] In this modified example, a planar adhesive 26 is provided between the middle layer 12 and the upper layer 13c, thereby bonding the sliding member 14, the anti-slip member 15, and the sliding member 16 to the middle layer 12. Therefore, there is no need to provide adhesive 24 (see Figure 3(c)) between the sliding member 14 and the anti-slip member 15, and there is no need to provide adhesive 25 (see Figure 3(c)) between the anti-slip member 15 and the sliding member 16. By not providing vertical adhesives 24 and 25, the discomfort to the user can be reduced. The configuration, manufacturing method, operation, and effects of this modified example other than those described above are the same as those of the first embodiment.

[0036] <Fourth variation of the first embodiment> Figure 8 is a cross-sectional view showing the mattress body according to this modified example. As shown in Figure 8, the mattress body portion 10b according to this modified example is provided with a lower layer portion 11, a middle layer portion 12, adhesive material 26, tapes 29a and 29b, and an upper layer portion 13c. The configuration of the upper layer portion 13c is the same as that of the third modified example of the first embodiment.

[0037] Tape 29a is applied from the lower surface of the sliding member 14 to the lower surface of the anti-slip member 15. Tape 29b is applied from the lower surface of the sliding member 16 to the lower surface of the anti-slip member 15. The adhesive 26 covers the lower surface of the upper layer 13c along with tapes 29a and 29b. As a result, the adhesive 26 adheres the sliding member 14, the anti-slip member 15, and the sliding member 16 to the middle layer 12, and also adheres tapes 29a and 29b to the middle layer 12.

[0038] The mattress body 10b is manufactured, for example, by the following method. First, the sliding member 14, the anti-slip member 15, and the sliding member 16 are placed with their lower surfaces facing upward. Next, tapes 29a and 29b are applied to temporarily fasten the sliding member 14, the anti-slip member 15, and the sliding member 16 to each other. This forms the upper layer 13c. Next, adhesive 26 is sprayed onto the lower surface of the upper layer 13c over the tapes 29a and 29b. Next, the upper surface of the middle layer 12 is brought into contact with the lower surface of the upper layer 13c via the adhesive 26. Finally, the adhesive 26 is allowed to harden. In this way, the mattress body 10b is manufactured.

[0039] According to this modified example, by fixing the sliding member 14 and the anti-slip member 15 with tape 29a, and fixing the anti-slip member 15 and the sliding member 16 with tape 29b, it is possible to prevent the sliding member 14, the anti-slip member 15, and the sliding member 16 from shifting relative to each other during the manufacturing process of the mattress body 10b. As a result, the productivity of the mattress body 10b is improved. The configuration, manufacturing method, operation, and effects of this modified example other than those described above are the same as those of the third modified example of the first embodiment.

[0040] <Fifth Modification of the First Embodiment> Figure 9 is a cross-sectional view showing the mattress body according to this modified example. As shown in Figure 9, the mattress body portion 10c according to this modified example is provided with a lower layer portion 11, a middle layer portion 12, an upper layer portion 13c, and adhesive materials 27a and 27b. The configuration of the upper layer portion 13c is the same as that of the third modified example of the first embodiment.

[0041] The adhesive 27a is placed across the lower corner 14a of the sliding member 14 and the corner 15a of the anti-slip member 15 and the corner 14a of the anti-slip member 15. The adhesive 27a seeps into the corners 14a and 15a. The sliding member 14 and the anti-slip member 15 are bonded together by the adhesive 27a.

[0042] The adhesive 27b is placed across the lower corner 16a of the sliding member 16 and the corner 15b of the anti-slip member 15 and the corner 16b of the anti-slip member 15 and the corner 16. The adhesive 27b has seeped into the corners 16a and 15b. The sliding member 16 and the anti-slip member 15 are bonded together by the adhesive 27b.

[0043] The mattress body 10c is manufactured, for example, by the following method. First, the sliding member 14, the anti-slip member 15, and the sliding member 16 are placed with their lower surfaces facing upward. Next, adhesive 27a is applied to the boundary between the sliding member 14 and the anti-slip member 15, and made to conform to the corners 14a of the sliding member 14 and the corners 15a of the anti-slip member 15. Adhesive 27b is also applied to the boundary between the sliding member 16 and the anti-slip member 15, and made to conform to the corners 16a of the sliding member 16 and the corners 15b of the anti-slip member 15. After that, the adhesives 27a and 27b are allowed to solidify. Next, the lower layer 11, the middle layer 12, and the upper layer 13c are laminated. In this way, the mattress body 10c is manufactured.

[0044] According to this modified example, by placing adhesives 27a and 27b below the upper layer 13c, discomfort for the user can be reduced. The configuration, manufacturing method, operation, and effects of this modified example are the same as those of the first embodiment, except as described above.

[0045] <Sixth variation of the first embodiment> Figure 10 is a cross-sectional view showing the upper layer of the mattress according to this modified example. As shown in Figure 10, in the upper layer 13d of the mattress according to this modified example, a base portion 21 common to the sliding member 14, the anti-slip member 15, and the sliding member 16 is provided. In the sliding member 14 and the sliding member 16, a fabric 22 is provided on the base portion 21, while in the anti-slip member 15, a fabric 22 is not provided on the base portion 21.

[0046] When producing the upper layer 13d of this modified example, when producing the composite material 23 using the laminating apparatus 200 shown in Figure 3(a), the burner 206 is ignited when the portion of the base 21 intended to form the sliding member 14 passes in front of the burner 206, the burner 206 is extinguished when the portion intended to form the anti-slip member 15 passes in front of the burner 206, and the burner 206 is reignited when the portion intended to form the sliding member 16 passes in front of the burner 206.

[0047] As a result, as shown in Figure 10, in the sliding members 14 and 16, the fabric 22 is bonded to the base portion 21, while in the anti-slip member 15, although the fabric 22 is present on the base portion 21, it is not bonded to the base portion 21. Then, the fabric 22 is cut and removed at the interface between the sliding member 14 and the anti-slip member 15, and at the interface between the sliding member 16 and the anti-slip member 15. In this way, the upper layer 13d is created.

[0048] According to this modified example, the base portion 21 is integrally formed across the entire upper portion 13d, eliminating the need for adhesives 24 and 25, thus preventing any discomfort to the user. Furthermore, the absence of adhesives 24 and 25 allows for further cost reduction. The configuration, manufacturing method, operation, and effects of this modified example are the same as those of the first embodiment.

[0049] <Second Embodiment> Figure 11(a) is a perspective view showing the mattress according to this embodiment, and Figure 11(b) is a cross-sectional view showing the upper layer of the mattress according to this embodiment.

[0050] As shown in Figures 11(a) and (b), the mattress 2 according to this embodiment differs from the mattress 1 according to the first embodiment in the configuration of the upper layer 13e of the mattress body 10. The upper layer 13e is provided with a sliding member 17 and an anti-slip member 18. When viewed from above, the outer edge of the sliding member 17 coincides with the outer edge of the upper layer 13e. An opening 17a is formed in the center of the sliding member 17, and the anti-slip member 18 is placed inside the opening 17a. The shape of the anti-slip member 18 is symmetrical, for example, a rectangular plate with rounded corners. An adhesive 28 is provided between the sliding member 17 and the anti-slip member 18. The shape of the adhesive 28 is a frame that surrounds the anti-slip member 18.

[0051] In the sliding member 17, the fabric 22 is positioned on the upper surface of the base portion 21 and is integrally connected to the base portion 21. In the anti-slip member 18, the fabric 22 is positioned on the lower surface of the base portion 21 and is integrally connected to the base portion 21. When the user lies on their back on the mattress 2, the user's buttocks face the anti-slip member 18 via the side fabric 30, and the user's back and lower limbs face the sliding member 17 via the side fabric 30.

[0052] Next, a description of the manufacturing method for the mattress according to this embodiment will be provided. Figures 12(a) to 12(c) show the method for manufacturing a mattress according to this embodiment.

[0053] First, as shown in Figure 12(a), the composite material 23 is manufactured in the same manner as in the first embodiment and cut to the size of the upper layer 13e. In the composite material 23, the base portion 21 and the material 22 are laminated together.

[0054] Next, as shown in Figure 12(b), the central part of the composite material 23 is cut out. At this time, the cut-out portion becomes the anti-slip member 18, and the remaining portion becomes the lubricating member 17. The area of ​​the lubricating member 17 after the anti-slip member 18 has been cut out becomes the opening 17a.

[0055] Next, as shown in Figures 12(c) and 11(b), the anti-slip member 18 is reversed and fitted into the opening 17a. Then, the anti-slip member 18 is bonded to the sliding member 17 with adhesive 28. In this way, the upper layer 13e is created.

[0056] According to this embodiment, the upper layer 13e can be manufactured from a single composite material 23 cut to the size of the upper layer 13e, thus further reducing the manufacturing cost of the mattress 2. Furthermore, the upper layer 13e can be manufactured by fitting the anti-slip member 18, reversed in its front and back sides, into the opening 17a after cutting out the anti-slip member 18 from the sliding member 17, thus simplifying the manufacturing process. The configuration, manufacturing method, operation, and effects of this embodiment other than those described above are the same as those of the first embodiment.

[0057] In this embodiment, if the anti-slip member 18 can be fixed within the opening 17a of the sliding member 17 without using adhesive 28, then adhesive 28 may not be provided. This avoids causing discomfort to the user due to the adhesive 28 and further reduces costs.

[0058] Furthermore, this embodiment can be combined with various modifications of the first embodiment. That is, similar to the first modification of the first embodiment, the fabric 22 of the sliding member 17 may be extended onto the base portion 21 of the anti-slip member 18 to cover the adhesive 28. Also, similar to the second modification of the first embodiment, a planar adhesive may be provided between the fabric 22 of the sliding member 17 and the base portion 21 of the anti-slip member 18. Also, similar to the third modification of the first embodiment, a planar adhesive may be provided over substantially the entire area between the middle layer 12 and the upper layer 13c. Also, similar to the fourth modification of the first embodiment, tape may be applied to the lower surface of the sliding member 17 and the lower surface of the anti-slip member 18. Also, similar to the fifth modification of the first embodiment, adhesive may be impregnated across the lower corner of the sliding member 17 on the anti-slip member 18 side and across the lower corner of the anti-slip member 18 on the sliding member 17 side.

[0059] Furthermore, this embodiment can be combined with the sixth modified example of the first embodiment. That is, when manufacturing the composite material 23 using the laminating apparatus 200 shown in Figure 3(a), when the portion intended to form the anti-slip member 18 passes in front of the multiple burners 206 arranged along the width direction of the base portion 21, the fabric 22 can be prevented from being bonded to the base portion 21 by stopping only the burner 206 located in the center in the width direction. Subsequently, the anti-slip member 18 can be formed by cutting away the fabric 22 in this portion. This allows the base portion 21 to be formed integrally across the entire upper layer, eliminating the need for adhesive.

[0060] <Third Embodiment> Figure 13 is a perspective view showing a mattress according to this embodiment. As shown in Figure 13, the mattress 3 according to this embodiment differs from the mattress 2 according to the second embodiment in the configuration of the upper layer 13f of the mattress body. The upper layer 13f is provided with sliding members 19a and 19b, and an anti-slip member 20.

[0061] Viewed from above, the anti-slip member 20 has an H-shape. Approximately rectangular recesses 20a and 20b are formed at the short-side centers of both longitudinal ends of the anti-slip member 20. The sliding member 19a is positioned within the recess 20a of the anti-slip member 20, and the sliding member 19b is positioned within the recess 20b of the anti-slip member 20. Viewed from above, the sliding members 19a and 19b, as well as the recesses 20a and 20b, are rectangles with two rounded corners. Therefore, the anti-slip member 20 surrounds the sliding member 19a from three directions, and also surrounds the sliding member 19b from three directions.

[0062] An adhesive 28a is provided between the lubricating member 19a and the anti-slip member 20. Viewed from above, the shape of the adhesive 28a is C-shaped, following the interface between the lubricating member 19a and the anti-slip member 20. An adhesive 28b is provided between the lubricating member 19b and the anti-slip member 20. Viewed from above, the shape of the adhesive 28b is C-shaped, following the interface between the lubricating member 19b and the anti-slip member 20.

[0063] In the sliding members 19a and 19b, the fabric 22 is positioned on the upper surface of the base portion 21 and is integrally connected to the base portion 21. In the anti-slip member 20, the fabric 22 is positioned on the lower surface of the base portion 21 and is integrally connected to the base portion 21. When the user lies on their back on the mattress 3, the user's buttocks face the anti-slip member 20 via the cover fabric 30, the user's back faces the sliding member 19a via the cover fabric 30, and the user's lower limbs face the sliding member 19b via the cover fabric 30. As a result, even when the electric bed raises the backrest, pressure on the user's abdomen and other areas is reduced.

[0064] Furthermore, when the user sits on the edge of the mattress 3 in the shorter direction, the user's buttocks face the anti-slip member 20 via the cover fabric 30. This makes it difficult for the user's buttocks to slip against the mattress 3, preventing the user from sliding off the mattress 3. The configuration, manufacturing method, operation, and effects of this embodiment other than those described above are the same as those of the second embodiment.

[0065] This embodiment can also be combined with each of the modifications of the first embodiment. That is, similar to the first modification of the first embodiment, the fabric 22 of the sliding members 19a and 19b may be extended onto the base portion 21 of the anti-slip member 20 to cover the adhesive 28a and 28b. Also, similar to the second modification of the first embodiment, a planar adhesive may be provided between the fabric 22 of the sliding members 19a and 19b and the base portion 21 of the anti-slip member 20. Also, similar to the third modification of the first embodiment, a planar adhesive may be provided over substantially the entire area between the middle layer 12 and the upper layer 13f. Also, similar to the fourth modification of the first embodiment, tape may be applied to the lower surfaces of the sliding members 19a and 19b and the lower surface of the anti-slip member 20. Furthermore, similar to the fifth modification of the first embodiment, the adhesive may be impregnated across the lower corner of the sliding member 19a on the side of the anti-slip member 20 and across the lower corner of the anti-slip member 20 on the side of the sliding member 19a, and the adhesive may be impregnated across the lower corner of the sliding member 19b on the side of the anti-slip member 20 and across the lower corner of the anti-slip member 20 on the side of the sliding member 19b. Also, similar to the sixth modification of the first embodiment, the fabric 22 may not be provided for the sliding members 19a and 19b.

[0066] <Fourth Embodiment> Figure 14 is a perspective view showing a mattress according to this embodiment. As shown in Figure 14, the mattress 4 according to this embodiment includes a mattress body 40, a slippery sheet 41, an anti-slip sheet 42, and a cover fabric 30.

[0067] The slippery sheet 41 is wrapped around the surface of the mattress body 40, the anti-slip sheet 42 is wrapped around the surface of the structure consisting of the mattress body 40 and the slippery sheet 41, and the cover fabric 30 covers the structure consisting of the mattress body 40, the slippery sheet 41 and the anti-slip sheet 42. For this reason, a portion of the slippery sheet 41 is positioned between the mattress body 40 and the anti-slip sheet 42. The slippery sheet 41 and the anti-slip sheet 42 are fixed to the mattress body 40.

[0068] The slippery sheet 41 is wound around the center of the short side of the mattress body 40, along the longitudinal direction of the mattress body 40. Therefore, the slippery sheet 41 is positioned on the center of the short side of the mattress body 40, extending along the entire longitudinal length of the mattress body 40.

[0069] The anti-slip sheet 42 is wrapped around the longitudinal center of the mattress body 40 along the short side of the mattress body 40. Therefore, the anti-slip sheet 42 is positioned on the longitudinal center of the mattress body 40 and extends along the entire short length of the mattress body 40.

[0070] The mattress body 40 can be a standard one and does not need to have a sliding member and an anti-slip member like the mattress 1 according to the first embodiment. The sliding sheet 41 is more slippery than the anti-slip sheet 42. More specifically, the sliding sheet 41 and the cover fabric 30 are more slippery than the anti-slip sheet 42 and the cover fabric 30. For example, the sliding sheet 41 is made of polyester, polyurethane, nylon, or a fabric made by mixing these, and the anti-slip sheet 42 is made of urethane or a fabric coated with urethane or silicone, etc., on a suitable base material.

[0071] Next, the operation and effects of this embodiment will be described. The mattress 4 is placed on an electric bed (not shown). When the user lies on their back on the mattress 4, the user's buttocks face the anti-slip sheet 42 via the cover fabric 30, and the user's back and lower limbs face the slippery sheet 41 via the cover fabric 30.

[0072] When the electric bed raises the backrest, the cover fabric 30 is less likely to slip against the anti-slip sheet 42, so the user's buttocks are less likely to move relative to the mattress body 40. On the other hand, the cover fabric 30 is more likely to slip against the slippery sheet 41, so the user's back and lower limbs can move away from the buttocks. As a result, pressure on the user's abdomen and other areas when the backrest is raised is reduced. Furthermore, since the mattress 4 according to this embodiment can use a conventional product as the mattress body 40, the cost is low. The configuration, operation, and effects of this embodiment other than those described above are the same as in the first embodiment.

[0073] <Fifth Embodiment> Figure 15(a) is a perspective view showing the mattress according to this embodiment, and Figure 15(b) is a cross-sectional view showing the mattress according to this embodiment.

[0074] As shown in Figures 15(a) and (b), the mattress 5 according to this embodiment is provided with a mattress body 40 and a cover 50. Similar to the fourth embodiment, the mattress body 40 can be a standard one and does not need to have a sliding member and an anti-slip member as in the first embodiment. The cover 50 covers the mattress body 40.

[0075] The cover fabric 50 has an anti-slip area 51 set in the longitudinal center of the mattress 5. The anti-slip area 51 is the area where the user's buttocks face when the user lies on their back on the mattress 5. The anti-slip area 51 may be located only in the short-side center of the mattress 5, or it may be located along the entire length in the short-side direction.

[0076] The area of ​​the cover fabric 50 excluding the anti-slip area 51 is a slippery area 52. The slippery area 52 is the area where the user's back and lower limbs face each other when the user lies on their back on the mattress 5. In this embodiment, an example is shown where the entire area of ​​the cover fabric 50 excluding the anti-slip area 51 is a slippery area 52, but it is not limited to this, and it is sufficient that at least the area where the user's back and lower limbs face each other is a slippery area 52. For this reason, the slippery area 52 may be divided into an area where the user's back faces and an area where the lower limbs face each other.

[0077] The anti-slip area 51 is less slippery than the slippery area 52. More specifically, the anti-slip area 51 on the cover fabric 50 and the mattress body 40 are less slippery than the slippery area 52 on the cover fabric 50 and the mattress body 40. For example, the cover fabric 50 is made of polyester, polyurethane, nylon, or a blend thereof, and a dot pattern 53 made of a flexible material is formed on the back surface of the anti-slip area 51. The flexible material is, for example, a soft resin material, such as silicone resin. In the dot pattern 53, for example, a plurality of hemispherical protrusions are arranged in a matrix.

[0078] In this embodiment as well, the mattress 5 is placed on the electric bed, and when the electric bed raises the backrest while the user is lying face up on the mattress 5, the user's buttocks come into contact with the anti-slip area 51, making it difficult for the user to move relative to the mattress body 40, while the user's back and lower limbs come into contact with the slippery area 52, making it easier for the user to move relative to the mattress body 40 together with the cover fabric 50. This stabilizes the user's position relative to the mattress 5 while reducing pressure on the abdomen, etc. Furthermore, in the mattress 5 according to this embodiment, a conventional product can be used as the mattress body 40, resulting in lower costs. The configuration, operation, and effects of this embodiment other than those described above are the same as in the first embodiment.

[0079] <Modified form of the fifth embodiment> Figure 16 is a perspective view showing the side of the modified example. As shown in Figure 16, the fabric cover 50a in this modified example differs from the fabric cover 50 in the fifth embodiment in the shape of the anti-slip region 51a and the slippery regions 52a and 52b. Similar to the fifth embodiment, the fabric cover 50a in this modified example covers the mattress body 40. The mattress body 40 can be a standard one.

[0080] Viewed from above, the anti-slip region 51a has an H-shape. That is, the anti-slip region 51a is located along the entire length in the longitudinal direction at both ends in the short direction of the upper surface of the side fabric 50a, and is located only in the longitudinal center of the short direction of the upper surface of the side fabric 50a. A dot pattern 53 made of a flexible material is formed on the back surface of the anti-slip region 51a. The slippery regions 52a and 52b are located at both ends in the longitudinal direction of the short direction of the upper surface of the side fabric 50a, respectively.

[0081] When the user lies on their back on the mattress, the anti-slip area 51a of the cover fabric 50a faces the user's buttocks, the slippery area 52a faces the user's back, and the slippery area 52b faces the user's lower limbs. Also, when the user sits on the short end of the mattress, the user's buttocks face the anti-slip area 51a of the cover fabric 50a.

[0082] According to this modified version, when the user sits on the short end of the mattress, the user's buttocks face the anti-slip area 51a, thus preventing the user from sliding off the mattress. The configuration, operation, and effects of this modified version other than those described above are the same as those of the fifth embodiment.

[0083] <How to distinguish between slipperiness and anti-slip properties> As described above, in the first embodiment and its first to sixth modifications, the second embodiment, and the third embodiment, a sliding member and an anti-slip member are provided in the mattress body. In the fourth embodiment, a sliding sheet and an anti-slip sheet are provided separately from the mattress body. In the fifth embodiment and its modifications, a sliding region and an anti-slip region are provided in the cover fabric. As described above, objects with sliding properties have a lower coefficient of friction and are more slippery than objects with anti-slip properties. However, since the absolute value of the coefficient of friction depends on the measurement method, it is difficult to distinguish between sliding and anti-slip properties based on the absolute value of the coefficient of friction. Therefore, in this specification, sliding and anti-slip properties are treated as relative concepts. An example of a method for distinguishing between sliding and anti-slip properties is described below.

[0084] Figures 17(a) and (b) show an example of a method for distinguishing between slipperiness and anti-slip properties. As shown in Figure 17(a), an equal number of test pieces 301, which are presumed to have slipperiness, and test pieces 302, which are presumed to have anti-slip properties, are prepared. For example, 10 test pieces 301 and 10 test pieces 302 are prepared. The shapes of test pieces 301 and 302 should be as similar as possible. A board 303 is also prepared. The surface of the board 303 is preferably made of the material for which the slipperiness and anti-slip properties to be evaluated are to be made. That is, in the first embodiment and its first to sixth modifications, the second embodiment, the third embodiment, and the fourth embodiment, it is preferable that the upper surface of the board 303 is made of the side fabric 30. In the fifth embodiment and its modifications, it is preferable that the upper surface of the board 303 is made of the same material as the upper surface of the mattress body 40.

[0085] Next, the test specimen 301 or test specimen 302 is placed on the plate 303, and the plate 303 is tilted little by little. The angle θ at which the test specimen 301 or 302 begins to slide relative to the plate 303 is recorded. The angle θ is the angle between the top surface of the plate 303 and the reference surface 304. The reference surface 304 is, for example, a horizontal plane.

[0086] As shown in FIG. 17(b), let the average value of the angle θ of the test piece 301 be A1 and the standard deviation be σ1. Also, let the average value of the angle θ of the test piece 302 be A2 and the standard deviation be σ2. If the value obtained by adding the standard deviation σ1 to the average value A1 (A1 + σ1) is smaller than the value obtained by subtracting the standard deviation σ2 from the average value A2 (A2 - σ2), then relatively speaking, it can be determined that the test piece 301 has lubricity and the test piece 302 has anti-slip properties. That is, if A1 + σ1 < A2 - σ2, in the relationship between the test piece 301 and the test piece 302, it can be said that the test piece 301 has lubricity and the test piece 302 has anti-slip properties.

[0087] Each of the foregoing embodiments and modifications thereof is an example embodying the present invention, and the present invention is not limited to these embodiments and modifications. For example, in each of the foregoing embodiments and modifications, those obtained by adding, deleting, or changing some components are also included in the present invention. Also, each of the foregoing embodiments and modifications can be implemented in combination with each other.

[0088] The present invention includes the following aspects.

[0089] (Appendix 1) A first member facing the user's buttocks, A second member facing the user's back and lower limbs, Comprising, The second member is a mattress that is more slippery than the first member.

[0090] (Appendix 2) The second member, A first portion facing the back, A second portion spaced apart from the first portion and facing the lower limbs, The mattress according to Appendix 1 having.

[0091] (Appendix 3) The first member is the mattress according to Appendix 2 that surrounds the first portion from three directions and surrounds the second portion from three directions.

[0092] (Appendix 4) An opening is formed in the second member, The first member is the mattress described in Appendix 1, which is placed inside the opening.

[0093] (Note 5) The first member is, First base part, A first fabric is placed on the lower surface of the first base portion and integrally connected with the first base portion, It has, The second member is, The second base part, A second fabric is positioned on the upper surface of the second base portion and integrally bonded with the second base portion, It has, The second fabric is more slippery than the first base part. (A mattress as described in any one of the appendices 1 to 4.)

[0094] (Note 6) The second member is, Base part, A fabric disposed on the upper surface of the base portion and integrally bonded with the base portion, It has, The aforementioned fabric is more slippery than the aforementioned base material. (A mattress as described in any one of the appendices 1 to 4.)

[0095] (Note 7) The fabric is the mattress described in Appendix 6, extending over the end of the first member.

[0096] (Note 8) The aforementioned base portion includes urethane or silicone. The aforementioned fabric is a mattress as described in Appendix 6 or 7, comprising polyester, polyurethane, or nylon.

[0097] (Note 9) The first member comprises urethane or silicone. The second component is a mattress as described in any one of the appendices 1 to 4, comprising polyester, polyurethane, or nylon.

[0098] (Note 10) The first member and the second member are further provided with side fabric covering them, The mattress described in any one of the appendices 1 to 9, wherein the second member and the cover fabric are more slippery than the first member and the cover fabric.

[0099] (Note 11) The mattress body and The cover fabric that covers the main body of the mattress, Equipped with, The mattress is less slippery in the first area of ​​the cover fabric facing the user's buttocks and in the main body of the mattress than in the second area of ​​the cover fabric facing the user's back and lower limbs and in the main body of the mattress.

[0100] (Note 12) The mattress according to Appendix 11, wherein a dot pattern made of a flexible material is formed on the back surface of the first region.

[0101] (Note 13) The mattress body and At least a portion of the mattress body is positioned on the first sheet facing the user's buttocks, At least a portion of the second sheet is placed on the mattress body and faces the user's back and lower limbs, Equipped with, The second sheet is a mattress that is more slippery than the first sheet.

[0102] (Note 14) The first sheet is wound around the longitudinal center of the mattress body along the short direction of the mattress body, The second sheet is wound around the center of the mattress body in the short direction, along the longitudinal direction of the mattress body. A portion of the second sheet is the mattress described in Appendix 13, which is positioned between the mattress body and the first sheet.

[0103] (Note 15) The mattress body, the first sheet and the second sheet are further covered with a cover fabric, The mattress described in Appendix 13 or 14, wherein the second sheet and the cover fabric are more slippery than the first sheet and the cover fabric. [Industrial applicability]

[0104] This invention can be used, for example, in a mattress mounted on an electric bed. [Explanation of Symbols]

[0105] 1, 2, 3, 4, 5 Mattress 10, 10a, 10b, 10c Mattress main body 11 Lower part 11a Slit 12. Middle section 12a Convex part 13. Upper Management 13a, 13b, 13c, 13d, 13e, 13f Upper part 14. Sliding member 14a Corner 15 Anti-slip component 15a, 15b corner 16. Sliding member 16a Corner 17. Sliding member 17a opening 18 Anti-slip component 19a, 19b Sliding members 20 Anti-slip component 20a, 20b recess 21 Base part 22 Fabric 23 Composite materials 24, 25, 26, 26a, 26b, 27a, 27b, 28, 28a, 28b Adhesive 29a, 29b tapes 30 Side land 40 Mattress main body 41. Lubricating sheet 42 Anti-slip sheet 50, 50a side land 51, 51a Anti-slip area 52, 52a, 52b slippery region 53 Dot Pattern 100 users 101 Back 102 Buttocks 103 Lower limbs 200 Laminating Machines 201, 202, 203 Drive rollers 204, 205 Driven rollers 206 burners 301, 302 Test specimens 303 board 304 Reference plane A1, A2 average value θ angle σ1, σ2 standard deviation

Claims

1. The mattress body and The cover fabric that covers the main body of the mattress, Equipped with, The mattress is less slippery in the first region of the cover fabric facing the user's buttocks and in the main body of the mattress than in the second region of the cover fabric facing the user's back and lower limbs and in the main body of the mattress.

2. The first region is an anti-slip region for the mattress body, The mattress according to claim 1, wherein the second region is a sliding region relative to the mattress body.

3. The mattress according to claim 1, wherein a dot pattern made of a flexible material is formed on the back surface of the first region.

4. The mattress according to claim 1, wherein an equal number of first test pieces and second test pieces are prepared, the surface of which is made of the same material as the first region, and the same number of second test pieces are prepared, the first test pieces and the second test pieces are placed on a board, and the board is tilted little by little, and the value obtained by adding the standard deviation of the second angle to the average value of the second angle with respect to the reference surface of the board from which the second test piece begins to slide is smaller than the value obtained by subtracting the standard deviation of the first angle from the average value of the first angle with respect to the reference surface of the board from which the first test piece begins to slide.

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