JP7166894B2 - mattress covers and mattresses - Google Patents

Description

The present invention relates to mattress covers and mattresses formed therewith.

Conventionally, mattresses have been widely used as bedding and the like. The seven major elements required for an ideal mattress are (1) moderate heat retention (easily adjusting warmth), (2) moderate moisture permeability (it does not get stuffy even when you sweat). (3) Appropriate resilience (good ability to turn over); (4) Good body pressure dispersion (appropriate softness); (5) Fewer allergens ( (6) easy cleaning (water-resistant and quick drying); and (7) environmental friendliness (easy-to-recycle material).

As a mattress cushion material that satisfies the above seven major elements at a high level, for example, a filament three-dimensional combination (network structure) described in Patent Document 1 and Patent Document 2 is known. According to the manufacturing method of the three-dimensional filament assembly disclosed in the above document, after a molten resin is extruded vertically downward from a plurality of horizontally arranged nozzles, the molten filament having a diameter of about 1 mm is cooled in cooling water. and let the buoyancy of the water form a loop of molten filament. By three-dimensionally fusion-bonding a plurality of these fused filaments, a filament three-dimensional bonded body having a porosity of over 90% and excellent ventilation is manufactured.

The filament three-dimensionally bonded body described above can be used as a mattress, for example, by covering it with a mattress cover having optimum heat retention depending on the season.

JP 2018-28161 A Japanese Patent No. 4966438

However, even if the filament three-dimensionally bonded body is applied as a mattress cushion material, there is a problem that the body pressure dispersibility (soft sleeping comfort) is impaired if the stretchability of the mattress cover used is insufficient. On the other hand, if a mattress cover with excellent elasticity is used so as not to impair body pressure dispersion, the surface of the filament three-dimensional combination used as a mattress cushion material is smooth and has low frictional resistance, so the upper surface of the mattress cover There was a problem that the fabric stretched and slipped.

FIG. 9(A) schematically shows how the mattress cover 50 is displaced when the conventional mattress cover 50 is used. FIG. 9(B) schematically shows how the upper surface fabric 51 of the mattress cover 50 is deformed from above, and FIG. 9(B) schematically shows how the central portion in the height direction) rotates.

When the user lying on the mattress cover 50 rolls over (mainly moves left and right), the upper fabric 51 of the mattress cover 50 is pulled in that direction, as shown in FIG. transform. Such deformation usually becomes more pronounced closer to the central portion of the mattress cover 50 in the front-rear direction. As a result of the deformation, the mattress cover 50 rotates in the circumferential direction around the front-rear direction as shown in FIG. 9(C). As a result, the mattress cover 50 is displaced as shown in FIG. 9(A).

When the displacement of the mattress cover 50 becomes large, the fabric becomes excessively stretched and easily damaged, and the side fabric 52 of the mattress cover 50 is largely exposed upward, which causes problems such as deterioration of sleeping comfort and appearance. In particular, when the upper surface material 51 and the side surface material 52 are different in texture and appearance, this problem becomes more serious.

As the stretchability of the mattress cover is increased so as not to impair the body pressure dispersion, the mattress cover is more likely to be displaced, and such a problem is more likely to occur. SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a mattress cover that is less likely to shift without impairing body pressure dispersion and appearance as much as possible.

A mattress cover according to the present invention has a first container, a second container, and a deformation-suppressing sheet. A mattress cover used for forming a mattress in which a second unit containing a cushion is connected, wherein the deformation suppressing sheet has a lower elongation rate than the fabric of the second container and is connected to the second container to form the second unit. It is arranged between the cushions between the first cushion and the second cushion.

According to this configuration, it is possible to make it difficult for displacement to occur without impairing body pressure dispersibility and appearance as much as possible. Here, "connected to the second container" refers to a form of being directly connected to the second container, as well as a form of being indirectly connected to the second container (for example, the It is a concept including a form connected to a second container via a first container, as in the second embodiment.

Further, more specifically, the deformation suppressing sheet may have an elongation rate of 3% or less. According to this configuration, it is possible to effectively suppress displacement of the mattress cover by using a deformation suppressing sheet having a sufficiently low elongation rate.

More specifically, the above configuration includes a first connecting member that detachably connects the first unit and the second unit, and a second member that detachably connects the deformation suppression sheet to the first container or the second container. Two connecting members are arranged between the cushions, a first opening is provided on the upper side of the first containing body to accommodate the first cushion, and a lower side of the second containing body is capable of accommodating the second cushion. It is good also as a structure provided with the 2nd opening part which carries out.

According to this configuration, it is possible to separate the first unit and the second unit as appropriate, remove each cushion, and further remove the deformation suppressing sheet, so that each containing body and each cushion can be easily washed or cleaned. becomes. Moreover, since each fastener and each opening are arranged between the cushions, it is possible to prevent them from being exposed to the outside as much as possible and to prevent the appearance of the mattress from being spoiled.

Further, more specifically as the above configuration, the second connecting member is provided in the second container to detachably connect the deformation suppressing sheet to the second container, and surrounds the second opening. , and the first connecting member may be provided so as to surround the second connecting member.

According to this configuration, even if the second unit is moved so that the second opening faces downward when forming the mattress, it is possible to prevent the second cushion from falling off. Moreover, it is possible to easily perform the work of connecting the first unit and the second unit after connecting the deformation suppressing sheet to the second container.

Further, more specifically, the first connecting member and the second connecting member may be formed using a non-stretchable fastener. According to this configuration, the effect of suppressing deformation of the deformation suppressing sheet and the tension effect of the non-stretchable fastener make it possible to further prevent the mattress cover from slipping.

More specifically, the first connecting member and the second connecting member may be provided within a region of 3 cm or more and 15 cm or less inward from the outer periphery of the mattress when viewed from above. .

Further, a mattress according to the present invention is a mattress having the mattress cover configured as described above, a first cushion housed in the first container, and a second cushion housed in the second container, wherein the first At least one of the cushion and the second cushion is configured to employ a filament three-dimensional combination.

ADVANTAGE OF THE INVENTION According to the mattress cover which concerns on this invention, it becomes possible to make it difficult to produce a shift|offset|difference, without impairing body pressure dispersion. The mattress according to the invention also makes it possible to enjoy the advantages of the mattress cover according to the invention, while utilizing a very airy cushion.

1 is a perspective view of a mattress 100 according to a first embodiment; FIG. 1 is a cross-sectional view of mattress 100. FIG. 1 is an exploded perspective view of mattress 100. FIG. 2 is an exploded perspective view of a first unit 100a in mattress 100. FIG. FIG. 3 is an exploded perspective view of a second unit 100a in the mattress 100; It is a sectional view of mattress 200 concerning a 2nd embodiment. 2 is an exploded perspective view of mattress 200. FIG. It is explanatory drawing regarding the measuring method of an extension rate. FIG. 10 is an explanatory diagram of displacement of a conventional mattress cover;

Embodiments of the present invention will be described below with reference to the drawings, taking a first embodiment and a second embodiment as examples. In the following description, vertical, horizontal, and front/rear directions (directions orthogonal to each other) are as shown in the respective drawings.

1. First Embodiment First, a first embodiment of the present invention will be described. FIG. 1 is a schematic perspective view of a mattress 100 according to the first embodiment. FIG. 2 is a schematic cross-sectional view taken along a plane (a plane perpendicular to the front-rear direction) that roughly bisects the mattress 100 in the front-rear direction. FIG. 3 is an exploded perspective view of the mattress 100. FIG. For convenience of explanation, the second unit 100b shown in FIG. 3 is shown upside down.

The mattress 100 is a two-layered mattress including a first unit 100a and a second unit 100b provided thereon. It is composed of a second cushion 5).

As a whole, the mattress 100 is a substantially rectangular parallelepiped with the longitudinal direction being the longitudinal direction and the vertical direction being the thickness direction. there is The mattress cover 1 comprises a first containing body 2 having an internal space for containing a first cushion 4, a second containing body 3 having an internal space for containing a second cushion 5, and a first cushion 4. A deformation restraint sheet 6 provided between the second cushions 5 is included.

The first container 2 and the second container 3 are detachably (separably connected) connected by a first fastener 11 . The first fastener 11 has a first engaging member 11a provided on the first containing body 2 and a second engaging member 11b provided on the second containing body 3. The first container 2 and the second container 3 are connected.

The second container 3 and the deformation suppressing sheet 6 are detachably connected by a second fastener 12 . The second fastener 12 has a third engaging member 12a provided on the second containing body 3 and a fourth engaging member 12b provided on the deformation suppressing sheet 6. By engaging these members, the second fastener 12 is engaged. 2 The containing body 3 and the deformation suppressing sheet 6 are connected.

FIG. 4 is an exploded perspective view of the first unit 100a shown in FIG. The first unit 100a is composed of a first containing body 2 having a substantially rectangular parallelepiped internal space, and a first cushion 4 contained therein. The shape and dimensions of the first containing body 2 are appropriately set so as to fit the outer surface of the first cushion 4 contained in its internal space. The first housing body 2 includes a first bottom surface fabric 21 covering the bottom surface (lower surface) of the first cushion 4, a first side surface fabric 22 covering the side surfaces (front, rear, left, and right surfaces) of the first cushion 4, It has a first upper surface material 23 covering the vicinity of the outer edge of the entire circumference of the upper surface of the cushion 4 .

A first opening 2h is provided inside the first top fabric 23 . That is, the first upper surface material 23 has a shape that protrudes from the upper end of the entire circumference of the first side surface material 22 to the first opening 2h. The first cushion 4 can be freely taken in and out of the first container 2 through the first opening 2h. In addition, a first engaging member 11a ( component of the first fastener 11) are arranged.

In this embodiment, the first engaging member 11a is provided 8 cm inside from the outer peripheral portion of the first upper surface fabric 23 over the entire circumference. If the distance from the outer periphery of the first upper surface material 23 to the first engaging member 11a is less than 3 cm, the first engaging member 11a tends to protrude to the side of the mattress when pulled, and conversely, the distance is less than 15 cn. If it exceeds, it becomes difficult to put the first cushion 4 in and out of the first container 2 . Therefore, the distance from the outer peripheral portion of the first upper surface material 23 to the first engaging member 11a is preferably 3 cm or more and 15 cm or less.

FIG. 5 is an exploded perspective view of the second unit 100b shown in FIG. The second unit 100b is composed of a second housing body 3 having a substantially rectangular parallelepiped internal space, a second cushion 5 housed therein, and a deformation suppressing sheet 6 . The shape and dimensions of the second containing body 3 are appropriately set so as to fit the outer surface of the second cushion 5 contained in its internal space. The second housing body 3 includes a second bottom surface material 31 that covers the outer edge of the bottom surface (lower surface) of the second cushion 5, and a second side surface material 32 that covers the side surfaces (front, back, left, and right surfaces) of the second cushion 5. and a second upper surface fabric 33 covering the upper surface of the second cushion 5 .

A second opening 3h is provided inside the second bottom surface fabric 31 . That is, the second bottom surface material 31 protrudes from the lower end of the entire circumference of the second side surface material 32 to the second opening 3h. The second cushion 5 can be freely taken in and out of the second container 3 through the second opening 3h. In addition, a third engaging member 12a ( component of the second fastener 12) are arranged.

On the other hand, the shape and dimensions of the deformation suppressing sheet 6 are set so that the outer periphery thereof substantially matches the outer periphery of the second opening 3h. Furthermore, a fourth engaging member 12b (a component of the second fastener 12) is provided on the entire outer circumference of the deformation suppressing sheet 6. As shown in FIG. In this manner, the deformation suppressing sheet 6 is detachably connected to the second container 3 using the second fastener 12, and is formed so as to close the second opening 3h just enough.

In addition, on the second bottom surface material 31, the second engaging member 11b (constituent member of the first fastener 11) is arranged so as to surround the entire circumference of the third engaging member 12a from the outside. The second engaging member 11b is arranged at an appropriate position so that it can be easily engaged with the first engaging member 11a.

In this embodiment, the second engaging member 11b is provided 8 cm inside from the outer peripheral portion of the second bottom surface material 31 over the entire circumference. If the distance from the outer periphery of the second bottom surface fabric 31 to the second engaging member 11b is less than 3 cm, the second engaging member 11b tends to protrude to the side of the mattress when pulled, and conversely, the distance is less than 15 cm. If it exceeds, it becomes difficult to put the second cushion 5 in and out of the second container 3 . Therefore, the distance from the outer peripheral portion of the second bottom surface material 31 to the second engaging member 11b is preferably 3 cm or more and 15 cm or less.

The mattress 100 includes a first operation of accommodating the first cushion 4 in the first container 2 to form the first unit 100a, a second operation of accommodating the second cushion 5 in the second container 3, and a second fastener 12. A third work of connecting the deformation suppressing sheet 6 to the second container 3 to form the second unit 100b using the first fastener 11, and a fourth work of connecting the second unit 100b to the first unit 100a can be formed by sequentially performing the work. The second opening 3h of the second containing body 3 is closed by the deformation suppressing sheet 6 by the third operation. Therefore, even if the second unit 100b is moved so that the second opening 3h faces downward when performing the fourth work, the second cushion 5 is prevented from falling off from the second opening 3h.

As described above, the mattress cover 1 has the first containing body 2, the second containing body 3, and the deformation suppressing sheet 6. As shown in FIG. In addition, the mattress cover 1 includes a second unit 100b (having the second cushion 5 housed in the second housing 3) on the first unit 100a (having the first cushion 4 housed in the first housing 2). Mattress cover used to form interlocking mattress 100. FIG.

The deformation suppressing sheet 6 has a sufficiently lower elongation rate than the fabrics of the first and second containing bodies 2 and 3, and specifically, is formed of a fabric having an elongation rate of 3% or less. Further, the deformation suppressing sheet 6 is connected to the second container 3 and arranged between the cushions between the first cushion 4 and the second cushion 5 .

As described above, in the present embodiment, the deformation suppressing sheet 6 made of hard-to-deform fabric is connected to the second container 3 and arranged between the cushions. Therefore, even if a highly stretchable fabric is used for the upper surface (second upper surface fabric 33) or the like of the mattress cover 1 so as not to impair the body pressure dispersion, the rotation of the mattress cover illustrated in FIG. Displacement due to movement is less likely to occur. That is, since the deformation suppressing sheet 6 has a relatively low elongation rate, at least the portion of the deformation suppressing sheet 6 is prevented from being deformed (deformation such that the central portion in the front-rear direction is bent), and the mattress cover 1 is prevented from rotating. It becomes difficult to cause misalignment due to

In addition, since the deformation-suppressing sheet 6 is arranged between the cushions, the deformation-suppressing sheet 6 is pressed vertically by the weight of the second unit 100b and the weight of the user of the mattress 100, so that the sheet is deformed using frictional force. It is also possible to restrain the lateral movement of the restraint sheet 6 . Furthermore, by arranging the deformation suppressing sheet 6 between the cushions, it is possible to prevent the deformation suppressing sheet 6 from being exposed to the outside as much as possible and prevent the appearance of the mattress 100 from being spoiled.

It should be noted that displacement due to rotation of the mattress cover 1 is relatively difficult to occur at both ends in the longitudinal direction, and tends to increase toward the central portion in the longitudinal direction. Therefore, it is desirable that the deformation suppressing sheet 6 covers the central portion of the mattress cover 1 in the longitudinal direction and is formed as large as possible at least in the longitudinal direction in order to effectively suppress the displacement. The deformation suppression sheet 6 of the present embodiment is formed large enough to cover the entire area surrounded by the third engaging member 12a, and can effectively suppress displacement.

The mattress cover 1 also detachably connects the first fastener 11 (first connecting member) that detachably connects the first unit 100a and the second unit 100b, and the deformation suppression sheet 6 to the second container 3. A second fastener 12 (second connecting member) is arranged between the cushions, a first opening 2h is provided on the upper side of the first container 2 so that the first cushion 4 can be accommodated, and a first opening 2h is provided below the second container 3. A second opening 3h for accommodating the second cushion 5 is provided on the side.

Therefore, the first unit 100a and the second unit 100b are appropriately separated, the cushions 4 and 5 are removed, and the deformation suppressing sheet 6 is removed so that the containers 2 and 3 and the cushions 4 and 5 can be easily washed. or cleaning. Moreover, since the fasteners 11 and 12 and the openings 2h and 3h are arranged between the cushions, they are not exposed to the outside as much as possible, and the appearance of the mattress 100 can be prevented from being spoiled.

In addition, the second fastener 12 is provided in the second container 3 and detachably connects the deformation suppression sheet 6 to the second container 3, and is provided so as to surround the second opening 3h, The first fastener 11 is provided so as to surround the second fastener 12 . Therefore, when forming the mattress 100, even if the second unit 100b is moved so that the second opening 3h faces downward, the second cushion 5 can be prevented from falling off. In addition, it is possible to easily perform the work of connecting the first unit 100a and the second unit 100b after connecting the deformation suppressing sheet 6 to the second container 3 .

Moreover, each fastener 11 and 12 is formed using a non-stretchable fastener. Therefore, the effect of suppressing deformation of the deformation suppressing sheet 6 and the tension effect of the non-stretchable fastener make it more difficult for the mattress cover 1 to slip.

For one or both of the first fastener 11 and the second fastener 12, a hook-and-loop fastener such as Velcro (registered trademark) may be employed as a detachable connecting member. However, since it is possible to make the mattress cover 1 difficult to stretch (improve non-stretchability), these fasteners 11 and 12 are one continuous slide fastener (equally spaced on the side of the non-stretch band). It is preferred to employ a non-stretchable fastener, such as a fastener in which alternating plastic or metal engaging members affixed to the body are engaged.

As fabrics used for the first containing body 2, the second containing body 3, and the deformation suppressing sheet 6, it is preferable to adopt a fabric having air permeability. As these materials, for example, quilted materials including batting may be used according to the temperature in the bedroom. Although the mattress cover 1 of this embodiment has a two-layer structure that accommodates two cushions, the mattress cover according to the present invention is not limited to this form, and has three or more cushions. It may be a mattress cover containing a cushion.

Also, as one or both of the cushions 4 and 5, a filament three-dimensional combination can be employed. The three-dimensionally bonded filament is formed by three-dimensionally fusion-bonding a plurality of thermoplastic resin fibers (molten filaments) in a molten state. Since the three-dimensional filament assembly and its manufacturing method are known as disclosed in, for example, Patent Document 1, detailed description thereof will be omitted here. By using a three-dimensional filament assembly, it is possible to create a very airy cushion with a porosity exceeding 90%. Even if one or both of the cushions 4 and 5 are made of three-dimensionally bonded filaments, the use of the mattress cover 1 according to the present embodiment makes it difficult for the above-described misalignment to occur.

2. Second Embodiment Next, a second embodiment of the present invention will be described. The second embodiment includes a first upper surface fabric 23 (including a first opening 2h and a first engaging member 11a) and a second bottom fabric 31 (including a second opening 3h, a second engaging member 11b, and a third It is basically the same as the first embodiment, except for points related to the engaging member 12a). In the following description, emphasis is placed on the description of points different from the first embodiment, and description of points common to the first embodiment may be omitted.

FIG. 6 is a schematic cross-sectional view of the mattress 200 according to the second embodiment cut along a plane (a plane perpendicular to the front-rear direction) that roughly bisects the front-back direction. FIG. 7 is an exploded perspective view of the mattress 200. FIG. Note that the second unit 200b shown in FIG. 7 is shown upside down for convenience of explanation.

The mattress 200 has a first unit 200a (corresponding to the first unit 100a of the first embodiment) and a second unit 200b (corresponding to the second unit 100b of the first embodiment) provided thereon. It is a layered mattress, and is composed of a mattress cover 1 and two rectangular parallelepiped cushions (a first cushion 4 and a second cushion 5) housed therein. The mattress cover 1 comprises a first containing body 2 having an internal space for containing a first cushion 4, a second containing body 3 having an internal space for containing a second cushion 5, and a first cushion 4. A deformation restraint sheet 6 provided between the second cushions 5 is included.

However, the mattress cover 1 of the second embodiment differs from the mattress cover 1 of the first embodiment in that the first upper surface fabric 23 of the first container 2 (including the first opening 2h and the first engaging member 11a) ) and the second bottom surface fabric 31 (including the second opening 3h, the second engaging member 11b, and the third engaging member 12a) of the second container 3 are exchanged. That is, as shown in FIG. 7, the upper surface material X of the first containing body 2 according to the second embodiment is the second bottom surface material 31 (the second opening 3h, the second engaging member 11b, and the third engaging member 12a). Further, the bottom surface material Y of the second container 3 according to the second embodiment has the same configuration as the first upper surface material 23 (including the first opening 2h and the first engaging member 11a) according to the first embodiment. It has become.

Therefore, in the second embodiment, the first container 2 and the deformation suppression sheet 6 are detachably connected by the second fastener 12 . Thus, the deformation suppression sheet 6 in the second embodiment can be connected to the first containing body 2 instead of the second containing body 3 . Even with such a configuration, the deformation suppressing sheet 6 can be indirectly connected to the second containing body 3, and displacement of the mattress cover 1 can be suppressed.

3. Method for measuring elongation rate Next, the method for measuring the elongation rate described above will be described. FIG. 8 is an explanatory diagram relating to the method of measuring the elongation rate. The elongation rate in the present invention is measured by the following method.

On a horizontal table, one longitudinal end of a measurement sample S (deformation-suppressing sheet sample) cut to a length of 30 cm and a width of 20 cm is fixed to a fixing clip CL1. Furthermore, the other longitudinal end of the measurement sample S is fixed to the movable clip CL2 weighing 2 kg so that the distance L between the fixed clip CL1 and the movable clip CL2 is 20 cm.

Next, the fixed clip CL1 is lifted and fixed horizontally, the vertical direction of the measurement sample S is aligned with the vertical direction, and the movable clip CL2 is suspended, so that the measurement sample S moves vertically downward due to the weight of the movable clip CL2. allow it to be pulled. The longitudinal length DL (cm) of the measurement sample S in the stretched state is measured, and the stretch ratio S (%) is calculated using the following formula (1).
S={(DL-20)/20}×100 (1)

4. Others Although the embodiments of the present invention have been described above, the configuration of the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the invention. That is, the above-described embodiments should be considered as examples in all respects and not restrictive. The technical scope of the present invention is defined by the scope of claims rather than the description of the above embodiments, and is understood to include all modifications within the scope and meaning equivalent to the scope of claims. should.

The present invention is applicable to mattress covers and mattresses.

Reference Signs List 1 mattress cover 2 first container 3 second container 4 first cushion 5 second cushion 6 deformation suppression sheet 11 first fastener 11a first engagement member 11b second engagement member 12 second fastener 12a third engagement Member 12b Fourth engagement member 21 First bottom fabric 22 First side fabric 23 First top fabric 31 Second bottom fabric 32 Second side fabric 33 Second top fabric 100, 200 Mattress 100a, 200a First unit 100b, 200b Second unit CL1 Fixed clip CL2 Movable clip S Measurement sample

Claims (4)

A second unit containing a second cushion, which is a three-dimensional filament assembly, is connected to the first unit, which contains a first cushion, which is a three-dimensional filament assembly, in the first container. A mattress comprising:
The fabric has an elongation rate of 3% or less, which is lower than the fabric of the second container, is connected to the second container, is arranged between the cushions between the first cushion and the second cushion, and rotates the second container. It has a deformation suppression sheet that suppresses displacement due to movement,
A first opening is provided on the upper side of the first containing body so that the first cushion can be freely put in and taken out,
A second opening that allows the second cushion to be freely inserted and removed is provided on the lower side of the second container,
A first connecting member that detachably connects the first unit and the second unit, and a second connecting member that detachably connects the deformation suppressing sheet to the first container or the second container are provided between the cushions. placed and
A mattress, wherein the first connecting member is provided so as to surround the second connecting member when viewed from above, and the first connecting member and the second connecting member are provided inside an outer circumference of the mattress. The first connecting member is
2. The mattress according to claim 1, wherein the mattress is provided within a region of 3 cm or more and 15 cm or less inwardly from the outer periphery of the mattress when viewed from above. The second connecting member is provided in the second container to detachably connect the deformation suppressing sheet to the second container, and is provided so as to surround the second opening. 3. A mattress according to claim 1 or claim 2. The first connecting member and the second connecting member are
4. A mattress according to any one of claims 1 to 3, characterized in that it is formed using non-stretchable fasteners.

Images