mattress

Abstract

To improve sleeping comfort of a mattress.SOLUTION: A mattress (1) includes a mattress body (3) formed of a filament three-dimensional connector extending in a front-back direction, which is a height direction of a lying person, a right-left direction, and a vertical direction. The mattress body (3) is formed with a plurality of regions (12-26) with different average densities of the filaments in the vertical direction. Part or all of the mattress body (3) is formed by vertically laminating a plurality of layers (4, 5, and 6) with different densities of the filaments in an integrated manner, and regions (13 and 14) whose average densities of the vertically laminated filaments are different from the average densities of the other regions (12, 15, and 16) are formed. Furthermore, the mattress body (3) is provided with an upper layer (4) consisting of one layer or a plurality of layers, and a lower layer (5) consisting of one layer or a plurality of layers, and is provided with an intermediate layer (6) between the upper layer (4) and the lower layer (5) so that the density of the filaments of the intermediate layer (6) is higher than those of the upper layer (4) and the lower layer (5).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a mattress having a mattress body made of a three-dimensional filament bond extending in the front-to-back direction, which corresponds to the height direction of a person lying down, the left-to-right direction, and the up-down direction. [Background technology]

[0002] Conventionally, a mattress body made of a three-dimensional bonded filament extending in the front-to-back direction (corresponding to the height of the person lying down), as well as the left-to-right direction and the up-to-down direction, has been used as the cushioning material inside the mattress (see, for example, Patent Document 1).

[0003] In this conventional mattress, filaments made of multiple molten thermoplastic resin fibers are lowered from above to fuse the filaments together into a three-dimensional net-like shape and then cooled to form the mattress, so that the density of the filaments in the vertical direction is constant. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2000-120743 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional mattresses, the density of the filaments in the vertical direction is constant, so that the expansion and contraction in the vertical direction when lying down is monotonous, and sleeping comfort is not good. [Means for solving the problem]

[0006] In the present invention according to claim 1, a mattress body is formed of a three-dimensional filament assembly extending in the front-rear direction, which corresponds to the height direction of a person lying down, the left-right direction, and the up-down direction. In a plan view, the mattress body has a plurality of regions with different average filament densities in the up-down direction in the part of the mattress body where the person lies down. The portion of the mattress body on which the person lies in plan view is formed by integrally laminating a plurality of layers having different filament densities one above the other, and the upper and lower laminated filament layers form an area in which the average density of the filaments differs from that of other areas. The left and right end portions of the mattress body in plan view are formed of a single layer having the highest average filament density, and the left and right end portions of the single layer mattress body have an average filament density higher in the central portion and the front and rear end portions than the average filament density between the central portion and the front and rear end portions. I decided to do so.

[0007] In addition, in the present invention according to claim 2, in the present invention according to claim 1, The average density of the filaments at the front and rear ends of the left and right ends of the mattress body, which are the four corner regions of the mattress body, is set to be the highest. I decided to do so.

[0008] In addition, in the present invention according to claim 3, Claim 1 or In the present invention according to claim 2, the mattress body has an upper layer consisting of one or more layers, and a lower layer consisting of one or more layers, and an intermediate layer is provided between the upper and lower layers, so that the filament density of the intermediate layer is higher than that of the upper and lower layers.

[0009] In addition, in the present invention according to claim 4, in the present invention according to claim 3, the density of the filaments in each layer forming the upper layer consisting of multiple layers or the lower layer consisting of multiple layers is gradually increased toward the middle layer. Effect of the Invention

[0010] The present invention provides the following advantages.

[0011] In other words, in the present invention, in a mattress having a mattress body made of a three-dimensional filament bond extending in the front-to-back direction, which corresponds to the height direction of a person lying down, as well as in the left-right direction and up-down direction, multiple regions are formed in the mattress body in which the average density of the filaments in the vertical direction differs, so that the cushioning properties in the vertical direction when lying down are partially changed, thereby improving sleeping comfort.

[0012] In particular, when part or all of the mattress body is formed by integrally stacking multiple layers with different filament densities one above the other, and forming an area where the average density of the filaments stacked above and below is different from other areas, or when the mattress body has an upper layer consisting of one or more layers and a lower layer consisting of one or more layers, and an intermediate layer is provided between the upper layer and the lower layer so that the filament density of the intermediate layer is higher than that of the upper layer and the lower layer, or further when the filament density of each layer forming the upper layer consisting of multiple layers or the lower layer consisting of multiple layers is gradually increased toward the intermediate layer, the cushioning in the vertical direction when lying down becomes smooth according to the load, thereby further improving the comfort of sleeping. [Brief description of the drawings]

[0013] [Figure 1] 1 is a perspective view showing a mattress according to the present invention; [Diagram 2] FIG. [Diagram 3] Cross-sectional diagram of the mattress body ((a) AA cross-sectional view, (b) BB cross-sectional view). [Figure 4] Cross-sectional diagram of the mattress body ((a) CC cross-sectional view, (b) DD cross-sectional view, (c) EE cross-sectional view). [Diagram 5] Cross-sectional diagram of the mattress body ((a) Enlarged view of CC cross section, (b) Enlarged view of DD cross section, (c) Enlarged view of EE cross section). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, a specific configuration of the mattress according to the present invention will be described with reference to the drawings.

[0015] As shown in Figs. 1 to 4, the mattress 1 contains a mattress body 3 inside an exterior material 2 in the form of a rectangular box-shaped bag.

[0016] The mattress body 3 is formed by a three-dimensional filament bonded body into a rectangular plate shape extending in the front-to-rear direction (left-to-right direction in FIG. 1), which corresponds to the height direction of a person lying down, and in the left-to-right and up-to-down directions perpendicular thereto. Here, the three-dimensional filament bonded body is formed by filaments made of multiple thermoplastic resin fibers in a molten state being fused together into a three-dimensional net shape and then being cooled. Thermoplastic resin materials such as polyethylene and polypropylene are used as the filaments.

[0017] The left and right ends of this mattress body 3 are formed as a single layer (one layer) with uniform filament density, and the center portion (where the reclining person lies) is formed by integrally laminating multiple layers (multi-layers) with different filament densities one above the other. The entire mattress body 3 may be formed as a multi-layer.

[0018] The multi-layered portion of the mattress body 3 has an upper layer 4 formed on the upper side and a lower layer 5 formed on the lower side, with an intermediate layer 6 integrally formed and adhered between the upper layer 4 and the lower layer 5. The upper layer 4 and the lower layer 5 may be formed of a single layer, or may be formed of multiple layers. Here, an intermediate layer 6 consisting of a single layer is provided between the upper layer 4 consisting of three layers and the lower layer 5 consisting of two layers.

[0019] The upper layer 4 is composed of, from the top, first to third upper layers 7 to 9, with the first upper layer 7 having the lowest filament density among the upper layers 4 and the third upper layer 9 having the highest filament density among the upper layers 4, and the filament density gradually (in steps) increasing in the order of the first to third upper layers 7 to 9 toward the intermediate layer 6.

[0020] In addition, the first upper layer 7 has the thinnest vertical thickness among the upper layers 4, and the third upper layer 9 has the thickest vertical thickness among the upper layers 4, and the vertical thicknesses of the first to third upper layers 7-9 are either the same or gradually (in stages) thicker in order as they approach the intermediate layer 6.

[0021] In this way, when the upper layer 4 is formed of multiple layers (first to third upper layers 7-9), the filament density of each layer (first to third upper layers 7-9) forming the upper layer 4 is made gradually higher toward the intermediate layer 6, and the vertical thickness (height) of each layer (first to third upper layers 7-9) forming the upper layer 4 is made uniform or gradually thicker toward the intermediate layer 6.

[0022] The lower layer 5 is composed of first and second lower layers 10, 11, from the bottom up, with the first lower layer 10 having the lowest filament density within the lower layer 5 and the second lower layer 11 having the highest filament density within the lower layer 5, and the filament density gradually (in steps) increasing in the order of the first and second lower layers 10, 11 toward the intermediate layer 6.

[0023] In addition, the first lower layer 10 has the thinnest vertical thickness among the lower layers 5, and the second lower layer 11 has the thickest vertical thickness among the lower layers 5, and the vertical thicknesses of the first and second lower layers 10, 11 are either the same or gradually (in stages) thicker in order as they approach the intermediate layer 6.

[0024] In this way, when the lower layer 5 is formed of multiple layers (first and second lower layers 10, 11), the filament density of each layer (first and second lower layers 10, 11) forming the lower layer 5 is made gradually higher toward the intermediate layer 6, and the vertical thickness (height) of each layer (first and second lower layers 10, 11) forming the lower layer 5 is made uniform or gradually thicker toward the intermediate layer 6.

[0025] The intermediate layer 6 has a higher filament density and a greater thickness in the vertical direction than the first to third upper layers 7 to 9 constituting the upper layer 4 and the first and second lower layers 10, 11 constituting the lower layer 5.

[0026] In the mattress body 3, the central portion where a person lies down, which is formed in multiple layers when viewed in a plane, is divided into multiple (here, five) regions 12-16, and both end portions formed in a single layer are each divided into multiple (here, five) regions 17-21 and 22-26.

[0027] The area 12 formed in the central part (mainly supporting the waist of a reclining person) of the multi-layered mattress body 3 is formed by the first to third upper layers 7a to 9a, the intermediate layer 6a, and the first and second lower layers 10a, 11a, which are integrally and closely attached to each other. The areas 13, 14 formed in the front part (mainly supporting the upper body of a reclining person) and the rear part (mainly supporting the lower body of a reclining person) of the mattress body 3 are formed by the first to third upper layers 7b to 9b, the intermediate layer 6b, and the first and second lower layers 10b, 11b, which are integrally and closely attached to each other. The areas 15, 16 formed in the front end part and the rear end part of the mattress body 3 are formed by the first to third upper layers 7c to 9c, the intermediate layer 6c, and the first and second lower layers 10c, 11c, which are integrally and closely attached to each other.

[0028] Here, in the mattress body 3, the average density in the vertical direction of region 12 formed by the first to third upper layers 7a-9a, the intermediate layer 6a, and the first and second lower layers 10a, 11a is different from the average density in the vertical direction of region 13, 14 formed by the first to third upper layers 7b-9b, the intermediate layer 6b, and the first and second lower layers 10b, 11b, and the average density in the vertical direction of region 15, 16 formed by the first to third upper layers 7c-9c, the intermediate layer 6c, and the first and second lower layers 10c, 11c. For example, the average density of regions 12, 15, 16 is the highest, and the average density of regions 13, 14 is the lowest. It is sufficient that among all the regions 12 to 16 formed in multiple layers, some regions (here, regions 12, 15, and 16) have a different filament density in the vertical direction compared to the other regions (here, regions 13 and 14), and all of the regions 12 to 16 may have different filament densities in the vertical direction.

[0029] In addition, the mattress body 3 is formed by adhering the first upper layers 7a, 7b, 7c, the second upper layers 8a, 8b, 8c and the third upper layers 9a, 9b, 9c in each of the regions 12 to 16 together in a front-to-back and left-to-right manner, the middle layers 6a, 6b, 6c are formed by adhering the front-to-back and left-to-right manner together, and the first lower layers 10a, 10b, 10c and the second lower layers 11a, 11b, 11c are formed by adhering the front-to-back and left-to-right manner together.

[0030] Here, in the mattress body 3, the densities of the first to third upper layers 7a-9a, the intermediate layer 6a, and the first and second lower layers 10a, 11a in region 12 are different from the densities of the first to third upper layers 7b-9b, the intermediate layer 6b, and the first and second lower layers 10b, 11b in regions 13 and 14, and the densities of the first to third upper layers 7c-9c, the intermediate layer 6c, and the first and second lower layers 10c, 11c in regions 15 and 16. For example, the layers in regions 12, 15, and 16 have the highest density, and the layers in regions 13 and 14 have the lowest density.

[0031] As a result, the mattress body 3 has cushioning properties in the vertical direction when lying down that vary partially between the regions 12 to 16 (particularly the regions 12, 13, and 14 where the lie-down person lies down), improving the comfort of sleeping. The cushioning properties of the regions 12, 13, and 14 can be set appropriately according to the body and preferences of the lie-down person. For example, if the average density in the vertical direction of the region 12 is made the highest to make the region 12 the hardest, the waist of the lie-down person will be supported, allowing the lie-down person to turn over easily.

[0032] The regions 17, 22 in the central portion of the mattress body 3 formed in a single layer, the regions 18, 23 in the front portion thereof, the regions 19, 24 in the rear portion thereof, the regions 20, 25 in the front end portion thereof, and the regions 21, 26 in the rear end portion thereof are also made to have different average densities in the vertical direction. For example, the regions 17, 20, 21, 22, 25, 26 are made to have the highest average density, and the regions 18, 19, 23, 24 are made to have the lowest average density. It is sufficient that some of the regions 17 to 26 formed in a single layer (regions 17, 20, 21, 22, 25, 26 in this case) have a different filament density in the vertical direction compared to the other regions (regions 18, 19, 23, 24 in this case), and all of the regions 17 to 26 may have different filament densities in the vertical direction.

[0033] In the mattress body 3, the average density of the regions 17, 22, 20, 21, 25, 26 is the highest and hardest, the average density of the regions 13, 14 is the lowest and softest, and the average density of the regions 12, 16, 18, 19, 23, 24 is intermediate between these. This makes the average density of the surrounding regions 15-26 directly adjacent to the regions 12, 13, 14 higher and harder than the regions 12, 13, 14 where the recumbent lies. For example, the average density of the surrounding regions 17, 18 directly adjacent to the region 12 is higher and harder than the region 12. Moreover, the average density of the regions 20, 21, 25, 26 at the four corners of the mattress body 3 is the highest and hardest. This prevents the mattress body 3 from sinking around the periphery.

[0034] The mattress body 3 is constructed as described above, with the number of layers in the upper layer 4 being greater than the number of layers in the lower layer 5 and the thickness of the upper layer 4 being greater than the thickness of the lower layer 5. When used as the mattress 1, the upper layer 4 receives the load (body weight) of a person lying down and expands and contracts, while the lower layer 5 receives the load (reaction force) from the bed base and expands and contracts.

[0035] As a result, in mattress 1, upper layer 4 and lower layer 5 sandwiching middle layer 6 expand and contract in response to the load of the person lying down, providing cushioning properties that exhibit an N value that changes smoothly in response to the load, similar to that of a pocket coil, thereby improving the sleeping comfort of the person lying down.

[0036] The mattress body 3 is divided into a plurality of regions 12-16 formed in multiple layers, and the cushioning properties (hardness) are made different by varying the average density of the filaments in the vertical direction of the regions 12-16. In the mattress body 3, the number of layers in each of the regions 12-16 is the same, but the number of layers may be different for each of the regions 12-16. The average density of the filaments is calculated as the weight of the filaments (resin) per unit volume, and may be changed by changing the diameter or material of the filaments. In a three-dimensional filament bond, the higher the average density of the filaments in the vertical direction, the harder the stretchability in the vertical direction.

[0037] As described above, the mattress 1 has a configuration in which the mattress body 3 is formed with a plurality of regions 12 to 26 in which the average density of the filaments in the vertical direction differs.

[0038] Therefore, in the mattress 1 having the above-mentioned configuration, the cushioning properties in the vertical direction when lying down are partially changed, thereby improving the sleeping comfort.

[0039] The mattress 1 is formed by integrally laminating a plurality of layers having different filament densities (first to third upper layers 7-9, intermediate layer 6, and first and second lower layers 10, 11) vertically into a portion of the mattress body 3 (or the entirety of the mattress body 1), and is also configured to form regions 12-16 in which the average density of the filaments laminated vertically differs in a portion of the mattress body 3.

[0040] Therefore, in the mattress 1 having the above-mentioned configuration, the cushioning properties in the vertical direction when lying down are partially changed, thereby improving the sleeping comfort.

[0041] Moreover, the mattress 1 is configured so that the filament density of the middle layer 6 is higher than that of the upper layer 4 and the lower layer 5.

[0042] Therefore, with the mattress 1 having the above configuration, the cushioning in the vertical direction when lying down becomes even smoother in response to the load, improving the comfort of sleeping.

[0043] Furthermore, the mattress 1 is configured so that the filament density of each layer (first to third upper layers 7-9, first and second lower layers 10, 11) forming the upper layer 4 consisting of multiple layers or the lower layer 5 consisting of multiple layers gradually increases toward the middle layer 6.

[0044] Therefore, in the mattress 1 having the above configuration, the cushioning in the vertical direction when lying down becomes smoother in response to the load, improving the sleeping comfort. [Explanation of symbols]

[0045] 1 Mattress 2 Exterior material 3 Mattress body 4 Top layer 5 Lower layer 6 Middle layer 7~9 1st~3rd upper layer 10,11 1st~2nd lower layer 12~26 areas

Claims

1. A mattress having a mattress body made of a three-dimensional filament bond extending in the front-back direction, which corresponds to the height direction of a person lying down, the left-right direction, and the up-down direction, In a plan view, a plurality of regions having different average filament densities in the vertical direction are formed in the portion of the mattress body where the person lies down, The portion of the mattress body on which the person lies in plan view is formed by integrally laminating a plurality of layers having different filament densities from above and below, and a region is formed in which the average density of the filaments laminated above and below is different from that of other regions, and both the left and right end portions of the mattress body in plan view are formed from a single layer having the highest average filament density, This mattress is characterized in that the average filament density of the left and right end portions of the single-layer mattress body is higher than the average filament density of the central portion and the front and rear end portions between the central portion and the front and rear end portions.

2. A mattress as described in claim 1, characterized in that the average density of the filaments in the front and rear end portions of the left and right end portions of the mattress body, which are the four corner areas of the mattress body, is highest.

3. The mattress body is characterized in that it has an upper layer consisting of one or more layers, and a lower layer consisting of one or more layers, and an intermediate layer is provided between the upper layer and the lower layer, and the filament density of the intermediate layer is higher than that of the upper layer and the lower layer.

4. 4. The mattress according to claim 3, wherein the filament density of each layer forming said upper layer or said lower layer increases gradually from one layer to the other toward the middle layer.

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