WO2018150815A1

WO2018150815A1 - Mattress

Info

Publication number: WO2018150815A1
Application number: PCT/JP2018/001964
Authority: WO
Inventors: 本州高岡
Original assignee: 株式会社エアウィーヴ
Priority date: 2017-02-15
Filing date: 2018-01-23
Publication date: 2018-08-23
Also published as: JPWO2018150815A1; JP7045336B2; JP7379568B2; JP2022069693A; JP2023063541A

Abstract

This mattress, upon which a user may lie, comprises a mattress cushion that can be divided in the length direction into a plurality of cushion bodies and a mattress cover capable of accommodating the mattress cushion. Each of the plurality of cushion bodies is formed using a three-dimensional filament bonded material that is made of a resin and has, at both end portions in the thickness direction, a smooth surface layer that has a higher filament density than the center portion in the thickness direction. The three-dimensional filament bonded material has a thickness of 10-25 cm, a filament diameter of 0.5-2 mm, and a bulk density of 30-150 kg/cm3. The mattress cover has, on a circumferential surface portion, a stretch-preventing member for preventing the mattress cover from stretching in the length direction.

Description

mattress

The present invention relates to a mattress formed using a cushion body.

In recent years, a high-resilience mattress using a bonded body (filament 3D bonded body) obtained by three-dimensionally fusing and bonding filaments made of thermoplastic resin as a cushion has been attracting attention. A mattress using a three-dimensional filament bonded body is easy to turn over due to its high repulsive force, and is excellent in breathability and body pressure dispersibility, so that it is hard to be stuffy and has a soft feeling. As described above, the mattress has essential features for comfortable sleep. In addition, since the three-dimensional filament bonded body has a high porosity, it can be quickly drained and dried even if washed with water, and thus has an advantage that it is easy to clean.

For example, a method disclosed in Patent Document 1 is known as a method for producing such a filament three-dimensional bonded body. According to this method, after a molten thermoplastic resin is extruded vertically downward from a plurality of nozzles arranged horizontally, a molten filament having a diameter of about 1 mm is dropped into the cooling water and looped by the buoyancy of water. At the same time, a plurality of loop-formed molten filaments are three-dimensionally fused and bonded to produce a three-dimensional filament combination.

Japanese Patent No. 4966438

However, although the filament three-dimensional combination is easy to clean, the mattress is often large and heavy. Therefore, there is a problem that the mattress is troublesome to transport to the washing place, draining and drying. In particular, such work is often difficult for the elderly.

To solve this problem, the mattress cushion is formed so as to be divided into a plurality of cushion bodies (which can be combined into one cushion for the mattress), and the mattress cushion is accommodated in the mattress cover. A way to do this is possible According to the mattress formed by this method, since each cushion body is relatively compact, the troublesomeness of the above work is reduced, and the above work by an elderly person is also relatively easy.

However, according to the mattress formed by the method, the gap between the boundary portions of the cushion bodies is easily spread. This problem will be described below with reference to FIG. FIG. 11 schematically shows a state in which the gap between the boundary portions of the cushion bodies is widened for an example of a mattress formed by the method.

In the mattress 500 shown in FIG. 11, three cushion bodies 521 to 523 arranged in the length direction are accommodated in the mattress cover 510. As shown in FIG. 11 (A), when the gap 520a between the cushion body 521 and the cushion body 522 is pressed against the user's limbs (eg, elbow or knee), as shown in FIG. There arises a problem that the limb or the like falls into the formed groove. The softer the cloth on the upper surface of the mattress cover in order to obtain a soft sleeping comfort, the more easily the gap 520a is widened, and the limbs and the like tend to fall into the generated groove.

If the limbs or the like fall into such a groove, the user may feel uncomfortable and may be a factor that makes the sleeping comfort worse. In view of the above problems, an object of the present invention is to provide a mattress that does not impair soft sleeping comfort and that makes it easy for a limb or the like to fall into a groove and facilitates a cleaning operation.

The mattress according to the present invention includes a mattress cushion that can be divided into a plurality of cushion bodies in the length direction, and a mattress cover that can accommodate the mattress cushion, and the mattress on which the user can lie Each of the plurality of cushion bodies is formed using a resinous filament three-dimensional combination having a smooth surface layer having a higher density of filaments at both end portions in the thickness direction than in the center portion in the thickness direction. The bonded body has a thickness of 10 to 25 cm, a filament diameter of 0.5 to 2 mm, a bulk density of 30 to 150 kg / m ³ , and the mattress cover has a length of the mattress cover. It is assumed that an extension preventing member for preventing the extension in the vertical direction is provided.

According to this configuration, the three-dimensional filament bonded body includes a smooth surface layer having a moderate thickness, a filament diameter, and a bulk density as a mattress cushion, and having a filament density higher at both ends in the thickness direction than at the center in the thickness direction. Furthermore, the mattress cushion is composed of a plurality of cushion bodies that can be divided. Therefore, the mattress cushion having high drainage and drying properties can be divided and transported easily, washed and dried. Furthermore, since an extension preventing member is provided on the peripheral surface portion (side surface portion) of the mattress cover, it is difficult for the cushion bodies to expand (form a groove) when sleeping. As a result, in the mattress according to the present configuration, knees, elbows and the like are unlikely to fall into the groove without impairing the soft sleeping comfort, and the cleaning operation can be facilitated.

In addition, the length direction here is a direction that is substantially perpendicular to the vertical direction and is the longest in the mattress (usually coincides with the height direction of the lying user). The peripheral surface portion of the mattress cover corresponds to the outer peripheral surface (side surface) of the mattress cover when viewed from above.

More specifically, the extension preventing member may be a fastener. According to this configuration, the fastener provided on the peripheral surface portion of the mattress cover can also be used as an extension preventing member.

More specifically, as the above configuration, the mattress cover includes a top surface side cover and a bottom surface side cover that are separable at the peripheral surface portion, and the fastener is configured to couple the top surface side cover and the bottom surface side cover. Also good.

According to this configuration, the fastener used as the extension preventing member is made to function as an opening / closing member (full open fastener) that divides the upper surface side cover and the lower surface side cover into two parts, and the workability of incorporating and removing the cushion body from the mattress cover is improved. It becomes possible to raise. In the past, even when only the upper surface of the mattress cover was dirty, it was necessary to take out the cushion body from the mattress cover and wash the entire mattress cover. It is also possible to wash only the upper surface side cover without taking out.

More specifically, as the above configuration, the bottom side cover may be formed in a bottomed cylindrical shape into which the mattress cushion can be fitted.

According to this configuration, since the bottom surface side cover is formed in a box shape with an upper opening, it is easy to incorporate a plurality of cushion bodies into the mattress cover. For example, when three cushion bodies are assembled, first, the side surfaces of the two cushion bodies are pressed against the inner surfaces of the bottom side cover in the longitudinal direction, and the remaining cushion bodies (mountain folds) are placed between these cushion bodies. Can be easily assembled into the mattress cover in a state where all the cushion bodies are pressure-bonded.

More specifically, as the above configuration, each of the plurality of cushion bodies may include a mesh-shaped inner cover that accommodates the filament three-dimensionally coupled body, and the inner cover may include a suspension.

According to this configuration, when the filament three-dimensional combination is washed, the inner cover can be used as a washing net, so that the filament can be prevented from being broken. In addition, when draining or drying the filament three-dimensional combination, it is possible to hang it directly on a clothesline using a hanging tool of the inner cover, so that the cleaning workability is improved.

More specifically, in the mattress cushion, the contact surfaces of the adjacent cushion bodies may have an inclination angle in the range of 20 to 70 ° with respect to the vertical direction. According to this structure, the clearance gap formed between cushion bodies has a predetermined angle from an up-down direction. Therefore, even when pressed downward by the user's limbs or the like, the formation of grooves due to the widening of the gap is suppressed, and it is possible to prevent limbs or the like from falling between adjacent cushion bodies as much as possible.

More specifically, as the above configuration, in the mattress cushion, a convex portion provided on one side of the adjacent cushion bodies may be fitted into a concave portion provided on the other side. According to this structure, the boundary of adjacent cushion bodies does not continue in the up-down direction. Therefore, even if the vicinity of the boundary is pressed downward by the user's limbs or the like, the gap formed between the adjacent cushion bodies is not continuous, so that it is possible to prevent the limbs or the like from falling to the bottom as much as possible. .

Further, the mattress according to the present invention is a mattress including a mattress cushion that can be divided into a plurality of cushion bodies in a length direction, and a mattress cover that can accommodate the mattress cushion, wherein the plurality of cushion bodies. Each of them is formed using a resin filament three-dimensional combination, and the filament three-dimensional combination has a thickness of 10 to 25 cm, a filament diameter of 0.5 to 2 mm, and a bulk density of 30 to 150 kg. / m a ^3, in the mattress cushions the contact surfaces of adjacent said cushion body to each other is configured to have an inclination angle of 20 ~ 70 ° with respect to the vertical direction.

Further, the mattress according to the present invention is a mattress including a mattress cushion that can be divided into a plurality of cushion bodies in a length direction, and a mattress cover that can accommodate the mattress cushion, wherein the plurality of cushion bodies. Each of them is formed using a resin filament three-dimensional combination, and the filament three-dimensional combination has a thickness of 10 to 25 cm, a filament diameter of 0.5 to 2 mm, and a bulk density of 30 to 150 kg. / m a ^3, in the mattress cushions, is adjacent the cushion body protrusions provided on one of each other, a configuration that fits in a recess provided in the other.

According to the mattress according to the present invention, the limbs and the like are unlikely to fall into the groove without impairing the soft sleeping comfort, and the cleaning work can be facilitated.

It is a perspective view of the mattress concerning a 1st embodiment. It is a perspective view of the mattress cover of the combined state concerning a 1st embodiment. It is a disassembled perspective view of the mattress cover concerning a 1st embodiment. It is an exploded perspective view of the cushion for mattresses concerning a 1st embodiment. It is sectional drawing of the mattress which concerns on 1st Embodiment. It is a conceptual diagram which shows the deformation | transformation state of the mattress which concerns on 1st Embodiment. It is a conceptual diagram which shows a mode that a cushion body is accommodated in a bottom face side cover. It is a conceptual diagram which shows an example of the draining method and the drying method at the time of cleaning each cushion body. It is sectional drawing of the mattress which concerns on 2nd Embodiment. It is a disassembled perspective view of the cushion for mattresses concerning 2nd Embodiment. It is a conceptual diagram which shows the deformation | transformation state of the mattress which concerns on 2nd Embodiment. It is sectional drawing of the mattress which concerns on 3rd Embodiment. It is a disassembled perspective view of the cushion for mattresses concerning 3rd Embodiment. It is a conceptual diagram which shows the deformation | transformation state of the mattress which concerns on 3rd Embodiment. It is explanatory drawing regarding a mode that the clearance gap between the cushion bodies spreads. It is a perspective view of the mattress which concerns on 4th Embodiment.

As embodiments of the present invention, each of the first to third embodiments will be described as an example, and will be described below with reference to the drawings.

1. First Embodiment FIG. 1 is a schematic perspective view of a mattress 1 according to a first embodiment of the present invention. Note that the vertical, horizontal, and front-rear directions related to the mattress 1 are as shown in FIG. Further, in FIG. 1, in order to facilitate understanding of the internal configuration of the mattress 1, the approximate positions of the cushion bodies 21 to 23 are indicated by broken lines.

The mattress 1 includes a mattress cover 10 covering the entire outer surface and a mattress cushion 20 accommodated therein. The mattress 1 generally has a rectangular parallelepiped shape having sides in the front-rear direction (length direction), left-right direction, and up-down direction (thickness direction), and the left-right dimension is slightly smaller than the front-rear dimension. The vertical dimension is sufficiently smaller than the horizontal dimension.

The mattress cushion 20 is formed so as to be divided into three cushion bodies 21-23. The mattress 1 is usually placed on a horizontal floor, a bed or the like, and is used in a form in which a user lies on the upper side. When used in this way, the up and down direction of the mattress 1 coincides with the vertical direction. As described above, the mattress 1 is set to have a longer size in the front-rear direction (length direction), and can be suitably used in a form in which the front-rear direction substantially matches the height direction of the user.

The mattress cover 10 has an upper surface side cover 10a and a bottom surface side cover 10b, and the

covers

10a and 10b are joined by fasteners (functioning as an extension preventing member 14 described later) with the mattress cushion 20 inserted therein. Is possible. FIG. 2A is a schematic perspective view of the mattress cover 10 in a state where the upper surface side cover 10a and the lower surface side cover 10b are coupled (combined state), and FIG. 2B is a diagram illustrating the mattress cover 10 with the upper surface side cover 10a and the bottom surface side cover. It is a schematic exploded perspective view at the time of decomposing | disassembling to 10b.

The mattress cover 10 in the state shown in FIG. 2A has a rectangular top surface portion 11 that contacts the user at bedtime, a rectangular bottom surface portion 12 that faces the user, and each side (11a to 11d, 11a to 11d, 12a to 12d), and has a peripheral surface portion 13 composed of four rectangular side surfaces, and has a substantially rectangular parallelepiped shape having a space inside as a whole.

More specifically, the upper surface portion 11 is surrounded by a left end side 11a and a right end side 11c extending in the front-rear direction, and a rear end side 11b and a front end side 11d extending in the left and right directions, respectively. On the other hand, the lower surface portion 12 is surrounded by a left end side 12a and a right end side 12c extending forward and backward, respectively, and a rear end side 12b and a front end side 12d extending left and right respectively.

The peripheral surface portion 13 includes a left side surface sandwiched between the sides 11a and 12a, a rear side surface sandwiched between the sides 11b and 12b, a right side surface sandwiched between the sides 11c and 12c, 11d and a side surface facing forward between the sides 12d. As described above, the peripheral surface portion 13 corresponds to the outer peripheral surface of the mattress cover 10 when viewed from above. Note that the front side surface and the left side surface are connected at the side 13a, the left side surface and the rear side surface are connected at the side 13b, the rear side surface and the right side surface are connected at the side 13c, and the right side surface and the front side surface are connected. The side surfaces are connected at the side 13d. The peripheral surface portion 13 can also be regarded as a rectangular tube-shaped side surface comprising four surfaces divided by the sides 13a to 13d.

An extension preventing member 14 is provided on the peripheral surface portion 13. The extension preventing member 14 has a structure that is difficult to extend as compared with other portions of the mattress cover 10 and plays a role of preventing the mattress cover 10 from extending in the length direction (height direction). The extension preventing member 14 is provided so that the position (height) in the vertical direction is substantially constant and the circumferential surface portion 13 makes one round when viewed from above.

In the present embodiment, a fastener using a woven tape is used as the extension preventing member 14, and this fastener is disposed so as to cover the entire joining portion of the upper surface cover 10a and the lower surface cover 10b. By opening the fastener, the upper surface side cover 10a and the lower surface side cover 10b can be completely separated at the peripheral surface portion 13.

The extension preventing member 14 prevents the mattress cover 10 from extending in the length direction, and prevents the gaps between the cushion bodies 21 to 23 from expanding due to the mattress cover 10 extending. The extension preventing member 14 is not limited to the one that completely prevents the extension. The stretch preventing member 14 is required to be a member having an elongation per meter of 2 cm or less when pulled with a force of 100 N, and is preferably a member having an elongation per meter of 1 cm or less. In particular, on the side surface (left side and right side) that is parallel to the length direction (usually coincides with the height direction of the user), the elongation per meter is 0.5 cm or less when pulled with a force of 100 N. Preferably there is. Examples of the material that can be used as the stretch preventing member 14 include a woven tape formed of chemical fibers.

The extension preventing member 14 is attached at a position within the range of 50 to 99% in the height from the bottom surface portion 12 to the top surface portion 11 (position closer to the top surface portion 11 than the center) from above. It is preferably provided continuously in the circumferential direction when viewed. In this case, the extension preventing member 14 is preferably disposed so as to continuously surround the peripheral surface portion 13 including two side surfaces (left side surface and right side surface) parallel to the length direction.

In the present embodiment, the belt-like stretch prevention member 14 is adopted. However, in addition to such a form, the entire peripheral surface portion 13 functions as the stretch prevention member using, for example, canvas cloth. You may design. In order to improve air permeability, it is desirable to provide a plurality of ventilation holes and mesh fabric having excellent air permeability on the peripheral surface portion 13.

The peripheral surface portion 13 corresponds to the peripheral surface portion of the mattress 1 (the outer peripheral surface of the mattress 1 as viewed from above). Moreover, the shape of the upper surface part 11 and the bottom surface part 12 is not restricted to a rectangle like this embodiment, For example, the shape which rounded the corner | angular corners in a rectangle may be sufficient. In this case, in the peripheral surface portion 13, the boundary portions (sides extending vertically) between the front, rear, left and right side surfaces may be similarly rounded.

FIG. 3 is an exploded perspective view of the mattress cushion 20 housed in the mattress 1 shown in FIG. The mattress cushion 20 can be divided into three cushion bodies 21 to 23 in the length direction. From another point of view, the mattress cushion 20 is formed by three cushion bodies 21 to 23 arranged in order in the length direction.

Each of the three cushion bodies 21 to 23 has the same configuration, and each includes a mesh-like inner cover 31 covering the entire outer surface and a filament three-dimensional joined body 41 accommodated therein. Each of the cushion bodies 21 to 23 is a substantially rectangular parallelepiped, and has an upward outer surface and a downward outer surface, and a peripheral surface portion (a portion composed of a forward outer surface, a rearward outer surface, a left outer surface, and a right outer surface). In the present embodiment, the inner cover 31 is provided with a fastener 31a on the peripheral surface portion as an opening / closing member for enabling the filament three-dimensional joined body 41 to be attached and detached. Further, on one surface of the peripheral surface portion (in this embodiment, a left-facing outer surface),

suspension tools

31c and 31e and suspension tool accommodation pockets 31b and 31d for accommodating the same are provided.

In the present embodiment, the

hanging tools

31c and 31e have a hanging string having one end fixed to the inner cover 31 and a hook fixed to the other end of the hanging string. The hook can be hooked on a clothes basket or the like, and the cushion bodies 21 to 23 can be hung only by hanging the hook on the clothes basket or the like (see FIG. 6).

The filament three-dimensional bonded body 41 is an elastic member obtained by three-dimensionally fusing thermoplastic resin melt filaments. In the manufacturing process of the filament three-dimensional joined body 41, the molten thermoplastic resin is extruded downward in the vertical direction from a plurality of nozzles arranged horizontally. Thereby, a molten filament having a cross-sectional diameter of around 1 mm is dropped into the cooling water to form a loop with the buoyancy of water, and at the same time, a plurality of loop-formed molten filaments are three-dimensionally fused and bonded, A filament three-dimensional combined body 41 is obtained. At this time, by controlling the width of the molten filament group with a chute and a take-up machine, it is possible to form a smooth surface layer in which the filament density is higher at both ends in the thickness direction than at the center in the thickness direction. As a method for producing such a filament three-dimensional bonded body, the method disclosed in Patent Document 1 can be employed.

The thickness (vertical dimension) of the filament three-dimensional bonded body 41 is preferably in the range of 10 to 25 cm. In the filament three-dimensionally bonded body 41, the filament diameter (cross-sectional diameter) is preferably in the range of 0.5 to 2 mm, and the bulk density is preferably in the range of 30 to 150 kg / m ³ . In the mattress 1 according to the present embodiment, all of these conditions are satisfied. A smooth surface layer having a higher filament density than the central portion in the thickness direction is formed at both ends in the thickness direction, and the thickness, filament diameter, and bulk density are within the above ranges. It is possible to prevent the cushion members 21 to 23 from deforming in the length direction and forming an elliptical groove on the surface of the mattress 1 as much as possible without impairing the performance and drying performance.

When the thickness of the filament three-dimensional joined body 41 is less than 10 cm, the filament three-dimensional joined body 41 itself is twisted and easily overlaps in the vertical direction, and it is difficult to sufficiently convey the pressing force in the length direction. On the contrary, if the thickness exceeds 25 cm, the filament three-dimensional combined body 41 becomes heavy and difficult to convey.

When the filament diameter in the filament three-dimensional bonded body 41 is less than 0.5 mm, the filament surface area is drained after washing with water and drying time becomes longer. On the contrary, if the filament diameter exceeds 2 mm, the soft feel of the filament three-dimensional joined body 41 tends to be lost. When the bulk density of the filament three-dimensional combination 41 is less than 30 kg / m ³ , the filament three-dimensional combination 41 itself is easily deformed in the length direction, and an elliptical groove or depression is likely to be generated on the surface of the mattress. On the contrary, when the bulk density exceeds 150 kg / m ³ , the filament three-dimensional bonded body 41 becomes heavy and difficult to convey.

In addition, the bulk density of a filament three-dimensional coupling body can be measured, for example, by a measurement method using a rectangular parallelepiped measurement sample. In the measurement method, first, the mass W (kg) of the measurement sample and the size (m) in each direction (vertical direction, horizontal direction, and height direction) of the measurement sample are measured. Moreover, the volume V (m ³ ) of the measurement sample is calculated by multiplying the size (m) of each direction (vertical direction, horizontal direction, height direction) of the measurement sample. The bulk density (kg / m ³ ) is calculated by dividing the mass W (kg) of the measurement sample by the volume V (m ³ ) of the measurement sample.

FIG. 4A is a cross-sectional view of the mattress 1 shown in FIG. 1 (a cross-sectional view taken along a plane whose normal direction is the left-right direction). FIG. 4B is a conceptual diagram showing a deformed state of the mattress 1 when a local load (pressing by the user's elbow or knee) is applied downward near the boundary between the

adjacent cushion bodies

21 and 22. Note that the mattress 1 in FIG. 4B is represented from the same viewpoint as in FIG. 4A.

The mattress 1 of the present embodiment includes a plurality of cushion bodies 21 to 23 including a filament three-dimensional combination body that is not easily deformed in the length direction (the cushion 20 for the mattress when viewed integrally), and these cushions. It includes a mattress cover 10 that covers the bodies 21 to 23 in a compressed state in the length direction. Since the mattress cover 10 is provided with the extension preventing member 14, the mattress cover 10 is very difficult to extend in the length direction. Therefore, even when a local load is applied to the gaps between the cushion bodies 21 to 23, the grooves are hardly formed, and the user's limbs (eg, elbows and knees) can be prevented from falling.

FIG. 5 is a conceptual diagram showing an example of a state in which the mattress 1 is accommodated while the cushion bodies 21 to 23 are crimped to the bottom surface side cover 10b. Note that the mattress 1 in FIG. 5 is represented from the same viewpoint as in FIG. 4A. The bottom surface side cover 10b has a rectangular bottom surface portion 12 and a cylindrical side surface portion 13 coupled to an outer edge portion of the bottom surface portion 12, and has a box shape (the bottom surface portion 12 can be fitted with a mattress cushion 20). A bottomed cylindrical shape).

In FIG. 5, as a method of incorporating the plurality of cushion bodies 21 to 23 into the mattress cover 10, there is a method of using the side surface portions 13 (the front side and the rear side of the side surface portion 13) on both sides in the length direction of the bottom surface side cover 10b. Illustrated. In this method, first, the side surfaces of the two

cushion bodies

21 and 23 are pressed against the front side and the rear side of the side surface portion 13, respectively, and then the cushion body 22 is pushed downward in the vertical direction. By this method, the plurality of cushion bodies 21 to 23 can be easily assembled into the mattress cover 10 in a pressure-bonded state. When the cushion body 22 is pushed in, the cushion body 22 may be folded in a mountain.

FIG. 6 is a conceptual diagram showing an example of a draining method and a drying method when the cushion bodies 21 to 23 are cleaned. In the present embodiment, the

hanging tools

31c and 31e are constituted by a hanging string fixed to the inner cover 31 and a hook for hanging on a clothesline or the like. Therefore, the cushion bodies 21 to 23 can be suspended only by hooking the hook on the clothesline 50. By suspending in this way, it is possible to drain and dry the cushion bodies 21 to 23 efficiently. It should be noted that the

hanging tools

31c and 31e are composed of only two hanging straps so that the hanging straps can be directly tied and fixed to the clothes rack, or a pair of buckles that can be joined and separated from the ends of the two hanging straps. May be provided.

As the material of the inner cover 31, a mesh fabric knitted with polyester fibers having low water absorption (high water repellency) is preferable. Moreover, as a material of the

hanging tools

31c and 31e, a net string or a net tape knitted with polyester fiber having low water absorption (high water repellency) is preferable.

The mattress 1 according to the present embodiment includes a mattress cushion 20 that can be divided into a plurality of cushion bodies 21 to 23 in the length direction, and a mattress cover 10 that can accommodate the mattress cushion 20, and is used on the upper side. The person can lie down. Further, each of the plurality of cushion bodies 21 to 23 uses a resin-made filament three-dimensional combination having smooth surface layers (layers in which the density of the filament is higher than that of the central portion in the thickness direction) at both ends in the thickness direction. Is formed. Further, the filament three-dimensional combination has a thickness of 10 to 25 cm, a filament diameter of 0.5 to 2 mm, and a bulk density of 30 to 150 kg / m ^3. An extension preventing member 14 for preventing the mattress cover 10 from extending in the length direction is provided. Therefore, according to the mattress 1, the mattress cushion 20 having high drainability and drying property can be divided and easily transported and washed and dried. Furthermore, since the stretch preventing member 14 is provided on the peripheral surface portion (side surface portion) of the mattress cover 10, it is difficult for a gap between the cushion bodies to be widened (groove formation) when sleeping. As a result, in the mattress 1, the knees and elbows are less likely to fall into the groove without impairing the soft sleeping comfort, and the cleaning operation can be facilitated.

2. Second Embodiment Next, a second embodiment of the present invention will be described. In addition, 2nd Embodiment is the same as that of 1st Embodiment fundamentally except the shape of a cushion body, and the point regarding this. In the following description, emphasis is placed on the description of the parts different from the first embodiment, and the description of the parts common to the first embodiment may be omitted.

FIG. 7A is a cross-sectional view of the mattress 100 according to the second embodiment (a cross-sectional view taken along a plane whose normal direction is the left-right direction). FIG. 7B is an exploded perspective view of the mattress cushion 120 used in the mattress 100. The mattress 100 includes a mattress cover 110 that covers the entire outer surface thereof, and a mattress cushion 120 accommodated therein. The mattress cushion 120 can be divided into a plurality of cushion bodies 121 to 123 in the length direction. In other words, the mattress cushion 120 is configured by arranging a plurality of cushion bodies 121 to 123 side by side in the length direction.

In the present embodiment, the contact surface of each of the plurality of cushion bodies 121 to 123 with the adjacent cushion body has an inclination angle in the range of 20 to 70 ° with respect to the vertical direction. More specifically, as shown in FIG. 7A, the cushion body 121 and the cushion body 122 are in contact with each other on a contact surface Y1 that is a plane. The inclination angle θ1 with respect to the vertical direction of the contact surface Y1 (corresponding to the vertical direction when the mattress 100 is placed on a horizontal plane) is within a range of 20 to 70 °. In addition, the cushion body 122 and the cushion body 123 are in contact with each other on a contact surface Y2 that is a plane. The inclination angle θ2 with respect to the vertical direction of the contact surface Y2 is also within the range of 20 to 70 °.

FIG. 8 is a conceptual diagram showing a deformed state of the mattress 100 when a local load (pressing by the user's limbs or the like as in FIG. 11) is applied in the vicinity of the contact surface Y1. . Note that the mattress 100 in FIG. 8 is represented from the same viewpoint as in FIG. 7A. In the mattress 100, since the gap formed between adjacent cushion bodies has a predetermined angle from the vertical direction, the gap is difficult to spread even when a vertical load is applied to the gap. For this reason, the formation of grooves due to the widening of the gap is suppressed, and it is difficult for limbs or the like to fall between adjacent cushion bodies.

Note that, if the inclination angle is too small, the contact surface becomes closer to the vertical surface, and the effect of suppressing the formation of the groove is reduced. On the other hand, if the inclination angle is increased too much, the size of the cushion body in the front-rear direction is increased correspondingly, and downsizing of the cushion body is hindered. Considering such points, in the present embodiment, the inclination angle is set within an appropriate range of 20 to 70 °.

In the second embodiment, as described above, the shape of the cushion body is devised so that the formation of the groove is suppressed. Therefore, in the second embodiment, a mattress as shown in FIG. 11 (the contact surface between the cushion bodies is a substantially vertical surface) even if the extension preventing member (see the description of the first embodiment) is not provided. ), The formation of the groove can be suppressed.

3. Third Embodiment Next, a third embodiment of the present invention will be described. The third embodiment is basically the same as the first embodiment except for the shape of the cushion body and the points related thereto. In the following description, emphasis is placed on the description of the parts different from the first embodiment, and the description of the parts common to the first embodiment may be omitted.

FIG. 9A is a cross-sectional view of the mattress 200 according to the third embodiment (a cross-sectional view taken along a plane whose normal direction is the left-right direction). FIG. 9B is an exploded perspective view of the mattress cushion 220 used in the mattress 200. The mattress 200 includes a mattress cover 210 that covers the entire outer surface of the mattress 200 and a mattress cushion 220 housed therein. The mattress cushion 220 can be divided into a plurality of cushion bodies 221 to 223 in the length direction. In other words, a structure in which a plurality of cushion bodies 221 to 223 are arranged side by side in the length direction corresponds to the mattress cushion 220.

Each of the cushion bodies 221 to 223 has a structure in which three thin rectangular parallelepiped filament three-dimensional assemblies (for convenience, the lower layer, the middle layer, and the upper layer, respectively) are stacked from the bottom to the top. Each of the cushion bodies 221 to 223 may be one in which layers formed separately are bonded using an adhesive. In each of the cushion bodies 221 to 223, a contact portion with an adjacent cushion body is composed of a plurality of rectangular parallelepiped surfaces, and an uneven surface that fits to each other is formed. Thus, the convex part provided in one of the adjacent cushion bodies is fitted into the concave part provided in the other.

For example, as shown in FIG. 9A and FIG. 9B, with respect to the contact portion between the adjacent cushion body 221 and the cushion body 222, a protrusion 221 a is provided in the cushion body 221. The convex portion 221a is formed by causing the rear end of the middle layer to protrude rearward from the rear ends of the upper layer and the lower layer. On the other hand, a recess 222 a is provided in the cushion body 222. The recess 222a is formed by causing the front ends of the upper layer and the lower layer to protrude forward from the front end of the middle layer. The protruding amount of the convex portion 221a is equivalent to the concave amount of the concave portion 222a, and the

adjacent cushion bodies

221 and 222 are in contact with each other with the convex portion 221a fitted into the concave portion 222a.

Since the unevenness described above is provided, the front and rear boundaries Z1 to Z3 of these

cushion bodies

221 and 222 are not continuous in the vertical direction. In the same manner, the front-rear boundary is not continuous in the up-down direction at the contact portion between the adjacent cushion body 222 and the cushion body 223.

FIG. 10 is a conceptual diagram showing a deformed state of the mattress 200 when a local load (pressing by a user's limbs or the like as in FIG. 11) is applied in the vicinity of the boundary Z1. Note that the mattress 200 in FIG. 10 is represented from the same viewpoint as in FIG. 9A. In the mattress 200, since the gap formed between the adjacent cushion bodies is not continuous, it is difficult for limbs or the like to fall to the bottom surface even when a load is applied downward.

In the third embodiment, as described above, the shape of the cushion body is devised so that the formation of the groove is suppressed. Therefore, in the third embodiment, a mattress as shown in FIG. 11 (the contact surface between the cushion bodies is a substantially vertical surface) even if the extension preventing member (see the description of the first embodiment) is not provided. ), The formation of the groove can be suppressed.

4). Fourth Embodiment Next, a fourth embodiment of the present invention will be described. The fourth embodiment is a mattress that takes into account the usage pattern of the double bed mattress, and is basically the same as the first embodiment except that the number of cushion bodies is different. In the following description, emphasis is placed on the description of the parts different from the first embodiment, and the description of the parts common to the first embodiment may be omitted.

FIG. 12 is a perspective view of the mattress 300 according to the fourth embodiment. The mattress 300 includes a mattress cover 310 that covers the entire outer surface thereof, and a mattress cushion 320 accommodated therein.

The mattress cushion 320 is formed by three cushion bodies 321a to 323a arranged side by side in the length direction (front and rear direction) and three cushion bodies 321b to 323b arranged side by side in the length direction. These six cushion bodies 321a to 323a and 321b to 323b are all formed in substantially the same shape and size. The row of three cushion bodies 321a to 323a and the row of three cushion bodies 321b to 323b are arranged side by side. Thereby, when a plurality of users sleep on the mattress 300, it is easy to select a cushion body having hardness (repulsive force) suitable for each person. For example, when two users sleep on the mattress 300 side by side, the cushion bodies 321b to 323b have the hardness suitable for one user so that the cushion bodies 321b to 323b have the other user's hardness. Can be selected so that the hardness is suitable for each.

The mattress cover 310 includes an upper surface side cover 310a and a lower surface side cover 310b, and an extension preventing member 314 that connects these covers 310a and 310b is provided. The upper surface side cover 310a, the lower surface side cover 310b, and the extension preventing member 314 correspond to the upper surface side cover 10a, the bottom surface side cover 10b, and the extension preventing member 14 in the first embodiment.

On the inner side of the mattress cover 310, a front-rear internal extension preventing member 314 a that restricts the extension of the mattress cover 310 in the front-rear direction and two left-right internal extension prevention members 314 b that restrict the extension of the mattress cover 310 in the left-right direction. 314c. In this embodiment, both ends of each of the extension preventing members 314a to 314c are fixed to the side surface of the bottom surface side cover 310b (just below the extension preventing member 314). The longitudinal extension preventing member 314a is stretched along the boundary between the left three cushion bodies 321a to 323a and the right three cushion bodies 321b to 323b. The left-right internal extension preventing member 314b is stretched along the boundary between the two

front cushion bodies

321a and 321b and the two

cushion bodies

322a and 322b disposed at the center in the front-rear direction. The left-right direction internal extension preventing member 314c is stretched along the boundary between the two

rear cushion bodies

323a and 323b and the two

cushion bodies

322a and 322b arranged at the center in the front-rear direction. These extension preventing members 314a to 314c are configured to be harder to extend than the upper surface side cover 310a and the bottom surface side cover 310b, and play a role of more effectively preventing the mattress cover 310 from extending.

Although the embodiment of the present invention has been described above, the configuration of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. That is, the above-described embodiment is an example in all respects, and should be considered as not restrictive. The technical scope of the present invention is shown not by the above description of the embodiment but by the scope of the claims, and is understood to include all modifications within the meaning and scope equivalent to the scope of the claims. Should.

The present invention can be used for a mattress formed using a cushion body.

1 Mattress (first embodiment)
DESCRIPTION OF SYMBOLS 10 Mattress cover 10a Upper surface side cover 10b Bottom surface side cover 11 Upper surface part 12 Bottom surface part 13 Peripheral surface part 14 Extension | extension prevention member 20 Mattress cushion (1st Embodiment)
21-23 Cushion body (first embodiment)
31 Inner cover 41 Filament three-dimensional assembly 100 Mattress (second embodiment)
110 Mattress cover (second embodiment)
120 Mattress cushion (second embodiment)
121-123 Cushion body (second embodiment)
200 mattress (third embodiment)
210 Mattress cover (third embodiment)
220 Mattress cushion (Third embodiment)
221 to 223 Cushion body (third embodiment)
221a Convex part 222a Concave part 300 Mattress (4th Embodiment)
310 Mattress cover (fourth embodiment)
320 Cushion for mattress (fourth embodiment)
321a to 323a, 321b to 323b Cushion body (fourth embodiment)

Claims

A mattress cushion that can be divided into a plurality of cushion bodies in the length direction;
A mattress cover that can accommodate the mattress cushion, and a mattress on which a user can lie on the upper side,
Each of the plurality of cushion bodies is formed by using a resin-made filament three-dimensional combination including a smooth surface layer in which both ends of the thickness direction have a higher density of filaments than the center portion in the thickness direction,
The filament three-dimensional combination has a thickness of 10 to 25 cm, a filament diameter of 0.5 to 2 mm, a bulk density of 30 to 150 kg / m 3 ,
The mattress according to claim 1, wherein an extension preventing member for preventing the mattress cover from extending in the length direction is provided on a peripheral surface portion of the mattress cover.
The mattress according to claim 1, wherein the extension preventing member is a fastener.
The mattress cover includes a top surface side cover and a bottom surface side cover that are separable at the peripheral surface portion,
The mattress according to claim 2, wherein the fastener joins the upper surface side cover and the lower surface side cover.
The mattress according to claim 3, wherein the bottom side cover is formed in a bottomed cylindrical shape into which the mattress cushion can be fitted.
Each of the plurality of cushion bodies includes a mesh-shaped inner cover that accommodates the filament three-dimensional combination,
The mattress according to any one of claims 1 to 4, wherein the inner cover includes a hanging tool.
6. The mattress cushion according to claim 1, wherein the contact surfaces of the adjacent cushion bodies have an inclination angle in a range of 20 to 70 ° with respect to the vertical direction. The mattress described.
The mattress according to any one of claims 1 to 5, wherein in the mattress cushion, a convex portion provided on one of adjacent cushion bodies is fitted into a concave portion provided on the other.
A mattress cushion that can be divided into a plurality of cushion bodies in the length direction;
A mattress cover that can accommodate the mattress cushion,
Each of the plurality of cushion bodies is formed using a resin filament three-dimensional combination,
The filament three-dimensional combination has a thickness of 10 to 25 cm, a filament diameter of 0.5 to 2 mm, a bulk density of 30 to 150 kg / m 3 ,
The mattress cushion according to claim 1, wherein the contact surfaces of the adjacent cushion bodies have an inclination angle of 20 to 70 ° with respect to the vertical direction.
A mattress cushion that can be divided into a plurality of cushion bodies in the length direction;
A mattress cover that can accommodate the mattress cushion,
Each of the plurality of cushion bodies is formed using a resin filament three-dimensional combination,
The filament three-dimensional combination has a thickness of 10 to 25 cm, a filament diameter of 0.5 to 2 mm, a bulk density of 30 to 150 kg / m 3 ,
In the mattress cushion, the mattress is characterized in that a convex portion provided on one of the adjacent cushion bodies is fitted into a concave portion provided on the other.