mattress

Abstract

To improve a sleeping feeling of a user on a mattress, and also to improve convenience of the mattress by enabling the mattress to be flexibly bent in reclining even when the mattress is used on a reclinable bed.SOLUTION: A mattress (1) has a mattress body (3) constituted by a filament three-dimensional conjugate extending in a front and rear direction being the height direction of a lying person, in a right and left direction, and in a vertical direction. A plurality of support areas (9-13) which support the lying person from below and where an average density of filaments in the vertical direction is different are formed in the mattress body (3). Bending areas (14) whose height is lower than that of the support areas (9-13) and where the average density of the filaments in the vertical direction is lower than that of the support areas (9-13) are formed between the adjacent support areas (9-13). Then, the mattress body (3) can be bent in the bending areas (14).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 that extends in the front-to-back direction, which corresponds to the height of a person lying down, the left-to-right direction, and the up-to-down direction. [Background technology]

[0002] Conventionally, a mattress body made of a three-dimensional filament bonded body extending in the front-to-back direction, which corresponds to the height direction of a 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 body, ensuring that the density of the filaments in the vertical direction is consistent in the front-to-back and left-to-right directions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-120743 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 of the mattress body is constant in the front-to-back and left-to-right directions, so the expansion and contraction in the vertical direction when lying down is monotonous, and sleeping comfort is not good.

[0006] Furthermore, when the above-mentioned conventional mattresses are used in reclining beds used in hospitals, nursing homes, etc., the mattress body does not flex flexibly when reclined, making it difficult to use. [Means for solving the problem]

[0007] Therefore, in the present invention according to claim 1, a mattress has a mattress body made of a three-dimensional filament assembly extending in the front-to-back direction, which corresponds to the height direction of a person lying down, as well as in the left-to-right direction and the up-to-down direction, and the mattress body is formed with a plurality of support regions that support the person lying down from below and have different average filament densities in the up-to-down direction, and bending regions are formed between adjacent support regions that are lower in height than the support regions and have a lower average filament density in the up-to-down direction than the support regions, making it possible to bend the mattress body at the bending regions. and forming end regions only at the left and right end portions of the support region, and setting the average density of the filaments in the end regions to be higher than those in the support region and the bending region. I decided to

[0009] Also, Claim 2 In the present invention, Claim 1 In the present invention, the support region includes 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 density of filaments in the intermediate layer is higher than that in the upper layer and the lower layer. and the end regions have the same filament density as the intermediate layer of the support region. I did.

[0010] Also, Claim 3 In the present invention, Claim 2 In the present invention, Support area The density of the filaments in each layer forming the upper layer or the lower layer is gradually increased toward the middle layer. and forming the end region with a single layer having the same filament density as the intermediate layer of the support region. I did. [Effects of the Invention]

[0011] The present invention provides the following effects.

[0012] In other words, in this invention, a mattress has a mattress body made of a three-dimensional filament bond that extends in the front-to-back direction, which is the height direction of a person lying down, and in the left-to-right direction and up-to-down direction, and the mattress body is formed with a plurality of support regions that support the person lying down from below and have different average filament densities in the up-to-down direction, and bending regions are formed between adjacent support regions that are lower in height than the support regions and have a lower average filament density in the up-to-down direction than the support regions, making the mattress body bendable in the bending regions.As a result, the cushioning properties in the up-to-down direction when lying down are partially changed, improving sleeping comfort.Furthermore, even when used on a reclining bed, the mattress (mattress body) can be flexibly bent when reclined, improving usability.

[0013] In particular, when the support area is formed by integrally stacking multiple layers with different filament densities one above the other, 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 and lower layers so that the filament density of the intermediate layer is higher than that of the upper and lower layers, or when the filament density of each layer forming the upper layer consisting of multiple layers or the lower layer consisting of multiple layers gradually increases toward the intermediate layer, the cushioning in the vertical direction when lying down becomes smooth according to the load, further improving sleeping comfort. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view illustrating a mattress according to the present invention. [Figure 2] An explanatory plan view of the mattress body. [Figure 3] Cross-sectional diagram of the mattress body ((a) AA cross-section, (b) BB cross-section). [Figure 4] Cross-sectional diagram of the mattress body ((a) CC cross-sectional view, (b) DD cross-sectional view, (c) EE cross-sectional view, (d) FF cross-sectional view). [Figure 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 INVENTION

[0015] The specific configuration of the mattress according to the present invention will be described below with reference to the drawings.

[0016] As shown in FIGS. 1 to 5, the mattress 1 contains a mattress body 3 inside an exterior material 2 in the form of a rectangular box-like bag.

[0017] The mattress body 3 is integrally formed from three-dimensionally bonded filaments, and is formed in the shape of a rectangular plate extending in the front-to-back direction (left-to-right in Figure 1), which corresponds to the height of a person lying down, as well as in the left-to-right and up-to-down directions perpendicular to the front-to-back direction. The three-dimensionally bonded filaments are formed by fusing filaments made of multiple molten thermoplastic resin fibers together into a three-dimensional net shape and then cooling the filaments. Thermoplastic resin materials such as polyethylene and polypropylene are used as the filaments.

[0018] In plan view, this mattress body 3 has multiple end regions 4-8 formed at left and right end portions at a front-to-back interval, multiple support regions 9-13 formed at a front-to-back interval in the central portion (the portion where the recumbent lies) that support the body of the recumbent from below, and multiple bending regions 14 formed at a front-to-back interval between adjacent end regions 4-8 and support regions 9-13 to improve the flexibility of the mattress body 3. The bending regions 14 are thinner in the vertical direction and lower in height than the other end regions 4-8 and support regions 9-13, so that recesses are formed on both the top and bottom surfaces of the mattress body 3. Here, the end regions 4-8 are formed as a single layer (single layer) with a uniform filament density, and the support regions 9-13 and bending region 14 are formed by integrally laminating multiple layers (multi-layers) with different filament densities one on top of the other. The entire mattress body 3 (end regions 4 to 8, support regions 9 to 13, and bending region 14) may be formed in multiple layers, or the bending region 14 may be formed in a single layer.

[0019] The mattress body 3 may have support regions 9-13 and a bending region 14 without end regions 4-8. The mattress body 3 has three support regions 11 spaced apart from each other in the front and rear direction in the central portion (mainly supporting the lower back of a reclining person), two support regions 10 spaced apart from each other in the front portion (mainly supporting the upper body of a reclining person), two support regions 12 spaced apart from each other in the rear portion (mainly supporting the lower body of a reclining person), three support regions 9 spaced apart from each other in the front end portion, and three support regions 13 spaced apart from each other in the rear end portion. The number of each support region 9-13 may be one or more. The order of the front-to-back widths increases in the order of support regions 9, 13, support region 11, and support regions 10, 12, but this is not limited to this.

[0020] In the multi-layered portion of the mattress body 3 (support regions 9-13 and bending region 14), an upper layer 15 is formed on the upper side, and a lower layer 16 is formed on the lower side, with an intermediate layer 17 formed integrally and closely between the upper layer 15 and the lower layer 16. The upper layer 15 and the lower layer 16 may be formed of a single layer, or may be formed of multiple layers. In this example, the intermediate layer 17, which is made up of a single layer, is provided between the upper layer 15, which is made up of two layers, and the lower layer 16, which is also made up of two layers.

[0021] The upper layer 15 of the support regions 9 to 13 is composed of first and second upper layers 18 and 19, from top to bottom, with the filament density of the topmost first upper layer 18 being the lowest among the upper layers 15, and the filament density of the bottommost second upper layer 19 being the highest among the upper layers 15, with the filament density gradually (in steps) increasing in the order of the first and second upper layers 18 and 19 as they approach the intermediate layer 17.

[0022] Furthermore, among the upper layers 15 of the support regions 9 to 13, the first upper layer 18, which is the uppermost layer, has the thickest vertical thickness among the upper layers 15, and the second upper layer 19, which is the lowermost layer, has the thinnest vertical thickness among the upper layers 15, and the first and second upper layers 18, 19 have the same or gradually (in steps) thicker vertically in the order of decreasing distance to the intermediate layer 17. Alternatively, the first and second upper layers 18, 19 may have gradually (in steps) thinner vertical thicknesses in the order of decreasing distance to the intermediate layer 17.

[0023] In this way, in the mattress body 3, the upper layer 15 of the support areas 9 to 13 is formed of multiple layers (first and second upper layers 18, 19), and the filament density of each layer (first and second upper layers 18, 19) forming the upper layer 15 gradually increases toward the middle layer 17, and the thickness (height) in the vertical direction of each layer (first and second upper layers 18, 19) forming the upper layer 15 is the same or gradually increases toward the middle layer 17.

[0024] The lower layer 16 of the support regions 9 to 13 is composed of first and second lower layers 20, 21, from bottom to top, with the filament density of the lowest first lower layer 20 being the lowest among the lower layers 16, and the filament density of the uppermost second lower layer 21 being the highest among the lower layers 16, with the filament density gradually (in steps) increasing in the order of the first and second lower layers 20, 21 as they approach the middle layer 17.

[0025] Furthermore, among the lower layers 16 in the support regions 9 to 13, the first lower layer 20, which is the lowest layer, has the thickest vertical thickness among the lower layers 16, and the second lower layer 21, which is the highest layer, has the thinnest vertical thickness among the lower layers 16, with the first and second lower layers 20, 21 having the same or gradually (in steps) thinner in the order as they approach the intermediate layer 17. Note that the first and second lower layers 20, 21 may have the same or gradually (in steps) thicker in the order as they approach the intermediate layer 17.

[0026] In this way, in the mattress body 3, the lower layer 16 of the support areas 9 to 13 is formed of multiple layers (first and second lower layers 20, 21), and the filament density of each layer (first and second lower layers 20, 21) forming the lower layer 16 gradually increases toward the middle layer 17, and the thickness (height) in the vertical direction of each layer (first and second lower layers 20, 21) forming the lower layer 16 is the same or gradually decreases toward the middle layer 17.

[0027] The intermediate layer 17 of the support regions 9-13 has a higher filament density and a thickness in the vertical direction that is equal to or thinner than the first and second upper layers 18, 19 that form the upper layer 15 of the support regions 9-13 and the first and second lower layers 20, 21 that form the lower layer 16 of the support regions 9-13. The intermediate layer 17 of the support regions 9-13 may have a thickness in the vertical direction that is thicker than the first and second upper layers 18, 19 that form the upper layer 15 of the support regions 9-13 and the first and second lower layers 20, 21 that form the lower layer 16 of the support regions 9-13. The intermediate layer 17 of the support regions 9-13 may also be formed of multiple layers.

[0028] In the mattress body 3, the support region 11 formed in the central portion (the portion that mainly supports the lumbar region of a reclining person) is formed by the first and second upper layers 18a, 19a, the intermediate layer 17a, and the first and second lower layers 20a, 21a being tightly and integrally attached to one another. In addition, in the mattress body 3, the support region 10 formed in the front portion (the portion that mainly supports the upper body of a reclining person) and the support region 12 formed in the rear portion (the portion that mainly supports the lower body of a reclining person) are formed by the first and second upper layers 18b, 19b, the intermediate layer 17b, and the first and second lower layers 20b, 21b being tightly and integrally attached to one another. Furthermore, in the mattress body 3, the support area 9 formed in the front end portion and the support area 13 formed in the rear end portion are formed by the first and second upper layers 18c, 19c, the middle layer 17c, and the first and second lower layers 20c, 21c, which are integrally and closely attached to each other.

[0029] Here, the mattress body 3 has different average vertical densities for the support region 11 formed by the first and second upper layers 18a, 19a, the intermediate layer 17a, and the first and second lower layers 20a, 21a, the support regions 10, 12 formed by the first and second upper layers 18b, 19b, the intermediate layer 17b, and the first and second lower layers 20b, 21b, and the support regions 9, 13 formed by the first and second upper layers 18c, 19c, the intermediate layer 17c, and the first and second lower layers 20c, 21c. For example, the average density of the support region 11 is the highest, and the average density of the regions 9, 13 is the lowest. Note that it is sufficient that some of the support regions 9-13 formed in the multilayer structure have a different vertical filament density compared to the others, and all of the regions 9-13 may have different vertical filament densities.

[0030] As a result, the mattress body 3 has vertical cushioning properties that vary partially between the support regions 9-13 (particularly the regions 10-12 where the reclining person lies), improving sleeping comfort. The cushioning properties of each of the support regions 10-12 can be set appropriately according to the body and preferences of the reclining person. For example, if the average vertical density of the support region 11 is made the highest and firmest, it will support the lower back of the reclining person, making it easier for them to turn over in bed.

[0031] The upper layer 15, lower layer 16, and middle layer 17 in the bending region 14 of the mattress body 3 are each formed of a single layer (first upper layer 18d, first lower layer 20d, middle layer 17d), and the middle layer 17 has a higher filament density than the upper layer 15 and the lower layer 16, and its thickness in the vertical direction is the same or thinner. The middle layer 17 in the bending region 14 may be thicker in the vertical direction than the upper layer 15 and the lower layer 16. The upper layer 15, lower layer 16, and middle layer 17 in the bending region 14 may also be formed of multiple layers. Furthermore, the average filament density in the vertical direction may be different for each bending region 14.

[0032] The end regions 4 to 8 of the mattress body 3 are formed from a single layer, and have a higher average density of filaments in the vertical direction than the other support regions 9 to 13 and the upper layer 15 and lower layer 16 of the bending region 14, thereby preventing sinking at the left and right ends of the mattress body 3.

[0033] Furthermore, the end regions 4 to 8 of the mattress body 3 are designed to have the same average density of filaments in the vertical direction as the other support regions 9 to 13 and the middle layer 16 in the bending region 14. The upper layer 15, lower layer 16 and middle layer 17 of the end regions 4 to 8 may be formed of multiple layers. Furthermore, the average density of filaments in the vertical direction may be different for each of the end regions 4 to 8.

[0034] In the mattress body 3, the upper layer 15 of the support regions 9 to 13 and the bending region 14 and the upper portions 22 of the end regions 4 to 8, the lower layer 16 of the support regions 9 to 13 and the bending region 14 and the lower portions 23 of the end regions 4 to 8, and the middle layer 16 of the support regions 9 to 13 and the bending region 14 and the middle portions 24 of the end regions 4 to 8 are formed integrally and in close contact with each other.

[0035] In the mattress body 3, the number of layers, thickness, and average density of filaments in the vertical direction of the upper layer 15 and the lower layer 16 of each support area 9 to 13 are the same so that they can be used upside down, but this is not limited to this, and the number of layers, thickness, and average density of filaments in the vertical direction of the upper layer 15 and the lower layer 16 of each support area 9 to 13 may be different.

[0036] The mattress body 3 is constructed as described above, and when used as the mattress 1, the load (body weight) from the person lying down is received by the upper layer 15 of the support areas 9 to 13, causing the upper layer 15 to expand and contract, while the load (reaction force) from the bed base is received by the lower layer 16, causing the lower layer 16 to expand and contract.

[0037] Therefore, in mattress 1, upper layer 15 and lower layer 16 sandwiching middle layer 17 expand and contract in response to the load from the person lying down, and the mattress has 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.

[0038] In the mattress body 3, the average density of the filaments is determined by the weight of the filaments (resin) per unit volume, and can be changed by changing the diameter or material of the filaments. In a three-dimensional filament bonded body, the higher the average density of the filaments in the vertical direction, the harder the stretchability in the vertical direction.

[0039] As described above, the mattress 1 has a mattress main body 3 consisting of a three-dimensional filament assembly extending in the front-to-back direction, which corresponds to the height direction of a person lying down, as well as in the left-to-right direction and the up-to-down direction. The mattress main body 3 is formed with a plurality of support regions 9-13 that support the person lying down from below and have different average filament densities in the up-to-down direction, and is configured such that the mattress main body 3 can be bent at the bending regions 14.

[0040] Therefore, with the mattress 1 configured as described above, the cushioning properties in the vertical direction when lying down are partially changed, improving sleeping comfort. Furthermore, even when used on a reclining bed, the mattress 1 (mattress body 3) can be flexibly bent when reclined, improving usability.

[0041] The mattress 1 has a configuration in which the support regions 9 to 13 are formed by integrally stacking a plurality of layers (upper layer 15, middle layer 17, lower layer 16) having different filament densities one above the other.

[0042] Therefore, with the mattress 1 having the above configuration, the cushioning properties in the vertical direction when lying down become smooth in response to the load, further improving the comfort of sleeping.

[0043] In addition, the mattress 1 has a mattress body 3 provided with an upper layer 15 consisting of one or more layers and a lower layer 16 consisting of one or more layers, and an intermediate layer 17 provided between the upper layer 15 and the lower layer 16, so that the filament density of the intermediate layer 17 is higher than that of the upper layer 15 and the lower layer 16.

[0044] Therefore, with the mattress 1 having the above configuration, the cushioning properties in the vertical direction when lying down become smooth in response to the load, further improving the comfort of sleeping.

[0045] In addition, the mattress 1 is configured so that the density of filaments in each layer forming the upper layer 15 (first and second upper layers 18, 19) consisting of multiple layers or the lower layer 16 (first and second lower layers 20, 21) consisting of multiple layers gradually increases toward the middle layer 17.

[0046] Therefore, with the mattress 1 having the above configuration, the cushioning properties in the vertical direction when lying down become smooth in response to the load, further improving the comfort of sleeping. [Explanation of symbols]

[0047] 1 Mattress 2 Outer material 3 Mattress body 4~8 Edge area 9~13 Support area 14 Flexion area 15 Upper layer 16 Lower layer 17,17a~17d Middle layer 18,18a~18d 1st upper layer 19, 19a to 19c: Second upper layer 20, 20a to 20d: First lower layer 21,21a~21c 2nd lower layer 22 Upper part 23 Lower part 24 Middle part

Claims

1. A mattress having a mattress body made of a three-dimensional filament bonded body 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-to-down direction, The mattress body is formed with a plurality of support regions that support a person lying down from below and have different average filament densities in the vertical direction, and a bending region is formed between adjacent support regions that is lower in height than the support regions and has a lower average filament density in the vertical direction than the support regions, making the mattress body bendable at the bending regions; A mattress characterized in that end regions are formed only at the left and right end portions of a support region, and the average density of filaments in the end regions is higher than that in the support region and the bending region.

2. The support region includes 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 intermediate layer has a higher filament density than the upper layer and the lower layer; 2. The mattress of claim 1, wherein the end regions have a filament density equal to that of the middle layer of the support region.

3. The filament density of each layer forming the upper layer or the lower layer of the support region is gradually increased toward the intermediate layer, 3. The mattress of claim 2, wherein the end regions are formed from a single layer having the same filament density as the middle layer of the support region.

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