JP6944696B2 - Core material - Google Patents

Description

The present invention relates to a core material housed in a pillow cover.

Various types of core materials have been conventionally known to be housed in the pillow cover. Japanese Unexamined Patent Publication No. 2015-150373 describes a pillow core material composed of a lower layer core material and an upper layer core material. This core material is used by covering it with a cover. The lower core material is located in the lowest layer, and the upper core material is arranged directly above the lower core material.

A occipital mounting portion, a cervical spine mounting portion, and a temporal mounting portion are provided on the upper side of the upper core material, and the temporal mounting portion and the cervical spine mounting portion are provided with respect to the occipital mounting portion. Has a raised shape. In this core material, the temporal mounting portion is raised higher than the occipital mounting portion. Therefore, the position of the occipital region is stabilized by inserting the occipital region into the occipital mounting portion between the relatively high temporal mounting portions.

Japanese Unexamined Patent Publication No. 2015-150373

However, in the above-mentioned core material, when the user lies sideways, a gap is formed between the user's neck and the temporal mounting portion and the cervical spine mounting portion, and the neck floats from the pillow. In addition, the cheeks of the user are in close contact with the temporal mounting portion when lying sideways. Therefore, since the neck floats from the pillow and the cheeks are in close contact with the pillow, there is a problem that the pressure on the cheeks becomes high and the cheeks are pressed, which puts a burden on the temporal region. When the load on the cheeks or the temporal region becomes large, it becomes difficult to turn over, which may impair the comfort of sleeping.

An object of the present invention is to provide a core material capable of reducing the burden on the cheeks and the temporal region and improving the sleeping comfort.

The core material of the present invention is a core material that is housed in a pillow cover to which the back of the head of the user is applied and extends in the longitudinal direction and the width direction intersecting the longitudinal directions, and on the surface facing the back of the head side. A first recess provided in the central portion in the width direction and on both side portions in the longitudinal direction, and a second recess located in the central portion in the longitudinal direction and the width direction on the back surface facing the opposite side of the back of the head. The front surface is formed with through holes penetrating the core material in the height direction intersecting each other in both the longitudinal direction and the width direction, and the front surface and the back surface are both ends in the width direction when viewed from the height direction. The back surface includes a pair of sloping portions that extend in the longitudinal direction and have a wavy shape in which both ends and the center of the longitudinal direction rise, and the back surface includes a pair of inclined portions that form a space below the end edges. Has a shape that expands in the width direction toward both ends in the longitudinal direction.

This core material has first recesses provided on both side portions in the longitudinal direction of the core material on the surface facing the occipital region side. Therefore, when the user sleeps sideways, the cheeks and the temporal region enter the first recess, so that the pressure on the cheeks and the temporal region can be reduced. Therefore, the shoulders of the user can be easily lifted by inserting the cheeks and the temporal region into the first recesses on the surface, so that the user can turn over smoothly and easily. Further, this core material includes a second recess located in the central portion of the back surface. Therefore, by receiving the back of the head of the user in the second recess on the back surface, the neck of the user can be reliably embedded in the front portion of the second recess. Therefore, since the neck can be embedded in the core material to prevent the neck from floating from the pillow, the burden on the occipital region and the temporal region can be reduced. Therefore, since the pressure on the occipital region and the temporal region is dispersed, it is possible to improve the ability to turn over and improve the comfort of sleeping.

Further, the depth of the second recess may gradually become shallower as the distance from the center of the back surface increases. In this case, the depth of the second recess on the back surface of the core material gradually becomes shallower as the distance from the center increases, so that the back of the head smoothly separates from the center of the second recess when the user lies sideways. .. Therefore, since the shoulders can be lifted smoothly, it is possible to further improve the ability to turn over.

Further, the second recess may have a shape extending in the longitudinal direction on the back surface. In this case, since the movement of the user's body in the longitudinal direction of the core material can be smoothed, the ability to turn over can be further improved.

Further, the width of the second recess may be gradually narrowed toward both ends in the longitudinal direction on the back surface. In this case, the width of the second recess gradually narrows toward both ends in the longitudinal direction of the core material, so that the user can smoothly sleep sideways by moving the back of the head along the second recess. Can be done. Therefore, the shoulders can be lifted more easily, and the sleeping comfort can be further improved.

According to the present invention, the burden on the cheeks and the temporal region can be reduced, and the sleeping comfort can be improved.

It is a top view which shows an example of the cover which accommodated the core material which concerns on embodiment. It is a perspective view which shows the surface of the core material of FIG. It is a perspective view which shows the back surface of the core material of FIG. It is a top view which shows the surface of FIG. 2 enlarged. It is a bottom view which shows the back surface of FIG. 3 enlarged. It is a side view which saw the core material of FIG. 1 from both ends side in the longitudinal direction. FIG. 1A is a diagram showing the movement of the user's body when the core material of FIG. 1 is used. FIG. (B) is a diagram showing the movement of the user's body when a conventional core material is used.

Hereinafter, embodiments of the core material according to the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements will be designated by the same reference numerals, and duplicate description will be omitted as appropriate. In the present specification, the "center portion in the width direction" indicates a portion including the center in the width direction, and even if the portion deviates from the center in the width direction as a whole, it corresponds to the region including the center. The "central portion in the longitudinal direction" indicates a portion including the center in the longitudinal direction as described above, and is applicable as long as the region includes the center even if it deviates from the center in the longitudinal direction as a whole. Further, "both sides of the longitudinal direction" indicate both sides of the center in the longitudinal direction.

As shown in FIGS. 1 and 2, the core material 1 according to the present embodiment is housed in the cover P1 of the pillow P and used. The core material 1 has a rectangular shape as a whole and has high flexibility. The core material 1 is, for example, symmetrical. The core material 1 is a low-resilience urethane foam, and is formed by urethane molding.

For example, the cover P1 is made of a mesh material, so that high air permeability is ensured. The cover P1 has a shape along the core material 1, and has a ribbon shape or a sphenoid shape having a wavy shape in which both ends and the center of each long side rise. The cover P1 includes a fastener P2 that extends in the longitudinal direction (horizontal direction in FIG. 1) and is located at the center in the width direction (vertical direction in FIG. 1), and is openable and closable by the fastener P2. By opening the fastener P2, the core material 1 is accommodated and taken out from the cover P1. The mode of the cover accommodating the core material 1 is not limited to the cover P1, and can be changed as appropriate.

As shown in FIGS. 2 and 3, the core material 1 has a substantially rectangular parallelepiped shape extending in the longitudinal direction D1, the width direction D2, and the height direction D3. Specifically, the core material 1 has a ribbon shape or a sphenoid shape having a pair of end sides 1a extending in the longitudinal direction D1 and having a wavy shape in which both ends and the center rise. The longitudinal direction D1, the width direction D2, and the height direction D3 intersect each other (for example, orthogonally).

The core material 1 has a front surface 2 directed toward the back of the head M1 of the user M (see FIG. 7) and a back surface 3 directed toward the opposite side (mattress side) of the back of the head M1. Further, the core material 1 includes the pair of end sides 1a described above, a pair of end sides 1b extending in the width direction D2 on the front surface 2, and a pair of end sides 1c extending in the width direction D2 on the back surface 3. The front surface 2 includes a pair of end sides 1a and a pair of end sides 1b, and the back surface 3 includes a pair of end sides 1a and a pair of end sides 1c.

The end side 1a is a first convex portion 11 provided at both ends of the longitudinal direction D1, a second convex portion 12 provided at the center of the longitudinal direction D1, and a first convex portion 11 and a second convex portion 12. It has a recess 13 located between them. The first convex portion 11, the concave portion 13, and the second convex portion 12 are smoothly connected in this order.

The surface 2 has recesses 2a (first recesses) recessed from the periphery on each of both side portions in the longitudinal direction D1. The recess 2a has a shape that expands toward both end sides (end side 1b side) in the longitudinal direction D1. For example, the recess 2a has a fan shape having a center on the center side in the longitudinal direction D1. The recess 2a is formed by a pair of hypotenuses 2e that are inclined with respect to the longitudinal direction D1 and the width direction D2.

The back surface 3 has a recess 3a (second recess) recessed from the periphery in the central portion in the longitudinal direction D1 and the width direction D2. The recess 3a has a shape that narrows toward both end sides (end side 1c side) in the longitudinal direction D1. The recess 3a has, for example, a streamlined shape that is symmetrical. Further, the core material 1 has a plurality of first through holes 4a and a plurality of second through holes 4b that penetrate the core material 1 in the height direction D3.

As shown in FIG. 4, the surface 2 has the pair of recesses 2a described above, a central portion 2b located at the center of the longitudinal direction D1 and the width direction D2, and a first end portion located on one side of the width direction D2. It has 2c and a second end 2d located on the opposite side of the first end 2c in the width direction D2. The height of the recess 2a is lower than the height of the central portion 2b. The height of the central portion 2b is lower than the height of the first end portion 2c and the second end portion 2d. Further, the height of the first end portion 2c is higher than the height of the second end portion 2d.

That is, the first end portion 2c, the second end portion 2d, the central portion 2b, and the recess 2a are higher in this order. For example, the height of the recess 2a is 2 cm or more and 9 cm or less, and the height of the central portion 2b is 3 cm or more and 10 cm or less. The height of the first end portion 2c is 5 cm or more and 12 cm or less, and the height of the second end portion 2d is 4 cm or more and 11 cm or less.

For example, the length L1 of the surface 2 (core material 1) in the longitudinal direction D1 is 45 cm or more and 65 cm or less, and the width B1 at the central portion 2b of the surface 2 is 25 cm or more and 45 cm or less. Further, the width B2 (the length of the end side 1b) at both ends of the surface 2 in the longitudinal direction D1 is 30 cm or more and 50 cm or less. The width B3 between the recesses 13 of the surface 2 is 20 cm or more and 40 cm or less. Thus, the width B2 is longer than the width B1 and the width B1 is longer than the width B3.

The plurality of first through holes 4a described above are formed in the central portion 2b of the surface 2. The diameter of each first through hole 4a is, for example, 1 cm or more and 3 cm or less. As an example, five first through holes 4a are formed, and one first through hole 4a is located at the center of the surface 2. Further, the remaining four first through holes 4a are arranged at the vertices of a virtual square S centered on the one first through hole 4a. Each side of the square S is inclined with respect to the longitudinal direction D1 and the width direction D2, and is arranged so as to form an angle of 45 ° with respect to the longitudinal direction D1 and the width direction D2, for example. The length of one side of the square S is, for example, 5 cm or more and 15 cm or less.

For example, the distance K1 from the end side 1a on the first end 2c side to the center of the nearest first through hole 4a is 8 cm or more and 18 cm or less. Further, the distance K2 from the end side 1a on the second end 2d side to the center of the nearest first through hole 4a is 5 cm or more and 15 cm or less. The distance K3 from the end side 1a on the first end portion 2c side to the center of the first through hole 4a located in the center of the width direction D2 is 12 cm or more and 23 cm or less, and the end side 1a on the second end portion 2d side. The distance K4 from the to the center of the first through hole 4a located at the center of the width direction D2 is 10 cm or more and 20 cm or less. For example, the distance K1 is longer than the distance K2, and the distance K3 is longer than the distance K4.

The plurality of second through holes 4b described above are formed on both sides of the first through hole 4a in the longitudinal direction D1. The diameter of each second through hole 4b is smaller than the diameter of each first through hole 4a, for example, 0.5 mm or more and 1.5 mm or less. A plurality of second through holes 4b are arranged so as to be rectangular on one side of the first through hole 4a in the longitudinal direction D1, and the other side of the first through hole 4a in the longitudinal direction D1 (on the one side above). On the opposite side), a plurality of second through holes 4b are arranged so as to have a rectangular shape. The plurality of second through holes 4b are arranged at positions that are symmetrical, for example.

For example, the plurality of second through holes 4b are formed in the recesses 2a, which further enhances the flexibility of the core material 1. As an example, 30 second through holes 4b are arranged, 15 of the 30 second through holes 4b are arranged on one side of the longitudinal direction D1, and the remaining 15 are arranged on the other side of the longitudinal direction D1. Is located in. The 15 second through holes 4b are arranged in 5 in the vertical direction and 3 in the horizontal direction, forming a vertically long rectangular shape. Of the 15 second through holes 4b, two second through holes 4b located at the center of the width direction D2 and on both ends of the longitudinal direction D1 are formed in the recess 2a. The number of second through holes 4b formed in each recess 2a may be 3 or 4.

As shown in FIG. 5, the back surface 3 is the opposite of the recess 3a extending in the longitudinal direction D1, the first portion 3d located on the first end 2c side of the surface 2, and the first portion 3d when viewed from the recess 3a. It has a second portion 3e located on the side. The first portion 3d and the second portion 3e have a flat shape or a curved shape so as to be raised.

The recess 3a has a streamlined shape extending in the longitudinal direction D1 as a whole. For example, the recess 3a is formed by an arc-shaped first curved portion 3f having a rotation center on the second portion 3e side and an arc-shaped second curved portion 3g having a rotation center on the first portion 3d side. There is. The first through hole 4a and the second through hole 4b described above are formed in the recess 3a.

For example, a plurality of first through holes 4a and a plurality of second through holes 4b are formed in the recess 3a. Further, all the first through holes 4a may be formed in the recess 3a, or only a part of the first through holes 4a may be formed in the recess 3a. Further, in the example shown in FIG. 5, two second through holes 4b are formed on one side and the other side of the first through hole 4a in the longitudinal direction D1, but the second through hole 4a is formed in the recess 3a. The number of the two through holes 4b may be one or three or more.

The recess 3a is formed so that the depth of the recess 3a gradually becomes shallower as the recess 3a is separated from the center 3b (corresponding to the center of the back surface 3). The depth of the recess 3a near the center 3b (adjacent to the first through hole 4a) is, for example, 2 cm, and the recess 3a gradually becomes shallower as the distance from the center 3b increases. The width B4 at the center 3b of the recess 3a is the widest, and the width of the recess 3a gradually narrows from the center 3b toward both ends in the longitudinal direction D1.

FIG. 6 is a side view of the core material 1 as viewed from the longitudinal direction D1 side. As shown in FIG. 6, the side surface 1d of the core material 1 has a boat shape. That is, while the end side 1b on the front surface 2 side is relatively linear, the end side 1c on the back surface 3 side has a shape that greatly extends downward from the end side 1a. The end side 1b has a recess 1e continuous with the recess 2a in the center of the width direction D2. The end side 1c is formed by a pair of inclined portions 1f extending linearly downward from the end side 1a and forming a space A downward, and a bottom portion 1g flattened between the pair of inclined portions 1f. ..

For example, the height H1 of the core material 1 in the recess 1e and the bottom 1g is 2 cm or more and 9 cm or less. The height H2 on the first end 2c and the first portion 3d side of the side surface 1d is 5 cm or more and 12 cm or less, and the height H3 on the second end 2d and the second portion 3e side of the side surface 1d is 4 cm or more. And it is 11 cm or less. In this way, the height H2 is higher than the height H3. Further, the length L2 of the first end portion 2c in the width direction D2 is longer than the length of the second end portion 2d in the width direction D2, for example, 6 cm or more and 13 cm or less.

The action and effect obtained from the core material 1 configured as described above will be described.

As shown in FIGS. 4 and 5, the core material 1 includes recesses 2a provided on both side portions of the core material 1 in the longitudinal direction D1 on the surface 2 facing the occipital region M1 side. Therefore, when the user M sleeps sideways, the cheeks and the temporal region enter the recess 2a, so that the pressure on the cheeks and the temporal region can be reduced.

Further, as shown in FIG. 7B, the pillow 100 provided with the conventional core material has a problem that the shoulder M2 is difficult to raise because the movable range R of the cheek and the temporal region of the user M is narrow. rice field. In the pillow 100, the shoulder M2 is difficult to raise, and the cheeks of the user M are pressed to put a burden on the temporal region, so that there is a problem that it is difficult to turn over and the sleeping comfort is impaired.

On the other hand, in the pillow P provided with the core material 1 according to the present embodiment, as shown in FIG. 7A, the movable range R is set by allowing the cheeks and the temporal region to enter the recesses 2a of the surface 2. Can be expanded. Therefore, since the shoulder M2 of the user M is easily lifted, it is possible to turn over smoothly and easily.

Further, the core material 1 includes a recess 3a located in the central portion of the back surface 3. Therefore, the movable range R can be widened by increasing the flexibility of the core material 1. Further, by receiving the occipital region M1 of the user M in the recess 3a of the back surface 3, the neck of the user M can be reliably embedded in the front portion (for example, the first portion 3d) of the recess 3a.

Therefore, since the neck can be embedded in the core material 1 to prevent the neck from floating from the pillow P, the burden on the occipital region M1 and the temporal region can be reduced. Therefore, since the pressures of the occipital region M1 and the temporal region are dispersed, it is possible to improve the ability to turn over and improve the sleeping comfort.

Further, the depth of the recess 3a gradually becomes shallower as the distance from the center 3b of the back surface 3 increases. Therefore, the depth of the recess 3a of the back surface 3 of the core material 1 gradually becomes shallower as the distance from the center 3b increases, so that the user M sleeps sideways and the back of the head M1 smoothly separates from the center 3b of the recess 3a. Become. Therefore, since the shoulder M2 can be lifted smoothly when lying sideways, it is possible to improve the ability to turn over.

Further, the recess 3a has a shape extending in the longitudinal direction D1 on the back surface 3. Therefore, the movement of the body of the user M in the longitudinal direction D1 of the core material 1 can be smoothed, so that the rollover property can be further improved.

Further, as shown in FIG. 5, the width of the recess 3a gradually narrows toward both ends in the longitudinal direction D1 on the back surface 3. Therefore, since the width of the recess 3a gradually narrows toward both ends of the longitudinal direction D1 of the core material 1, the user M moves the back of the head M1 and the neck along the recess 3a to smoothly sleep sideways. Can be done. Therefore, the shoulder M2 can be lifted more easily, and the sleeping comfort can be further improved.

Further, the core material 1 has a ribbon shape or a sphenoid shape, and each end side 1a of the core material 1 has a wavy shape in which both ends and the center rise. Therefore, the design of the core material 1 can be enhanced. Further, since the neck of the user M is buried in the raised portion at the center of the end side 1a, it is possible to prevent a gap from being formed between the neck and the pillow P. Therefore, the pressure can be dispersed by increasing the contact area of the user M with the pillow P, which contributes to further improvement of sleeping comfort.

Further, as shown in FIG. 4, the recess 2a of the surface 2 has a hypotenuse 2e that is inclined with respect to the longitudinal direction D1 and the width direction D2. Therefore, when the user M sleeps sideways, the cheeks can be made easier to enter the recess 2a, and the neck can be brought into close contact with the front portion (for example, the first end portion 2c) of the recess 2a. Therefore, the feeling of pressure on the cheeks when sleeping sideways can be reduced, and the fit feeling when sleeping sideways can be improved.

Further, as shown in FIG. 6, the surface 2 has a first end portion 2c located on one side of the width direction D2 and a second end portion located on the opposite side of the first end portion 2c in the width direction D2. The height H2 of the first end portion 2c is higher than the height H3 of the second end portion 2d. Therefore, it is possible to select which of the first end portion 2c and the second end portion 2d is directed toward the neck side according to the height of the neck of the user M. Therefore, since the height of the surface 2 can be selected according to the height of the neck of the user M, the sleeping comfort of the user M can be further improved.

Further, a pair of inclined portions 1f forming a space A below are provided at both ends of the width direction D2 on the side surface 1d of the core material 1. Therefore, it is possible to easily put a hand under the core material 1 from the space A. Further, since the side surface 1d has a boat shape, it is possible to make it difficult for the shoulder M2 to get on the pillow P when the user M sleeps sideways. Therefore, since the neck can be buried in the pillow P by not riding the shoulder M2 on the pillow P, the pressure can be dispersed and the sleeping comfort can be improved.

Further, as shown in FIG. 5, the core material 1 is provided with a plurality of through holes 4a and 4b in the recesses 3a of the back surface 3. Therefore, the air permeability of the core material 1 can be enhanced and the core material 1 can be further softened. Therefore, the fit can be improved and the sleeping comfort can be further improved. Further, since the core material 1 is soft, the neck of the user M can be surely embedded in the pillow P.

Although the embodiment of the core material according to the present invention has been described above, the present invention is not limited to the above-described embodiment and may be modified without changing the gist described in each claim. That is, the present invention can be modified in various ways without changing the gist described in the claims.

For example, in the above-described embodiment, an example in which the recess 3a on the back surface 3 has a streamlined shape has been described. However, the shape of the concave portion on the back surface may be an elliptical shape, an oval shape, a circular shape, or a polygonal shape, and can be appropriately changed. In addition, the size, number, and arrangement of the recesses on the back surface can be changed as appropriate.

Further, in the above-described embodiment, the core material 1 provided with the plurality of through holes 4a and 4b has been described, but the shape, size, number, and arrangement mode of the through holes can be appropriately changed. Further, the through hole may be omitted.

Further, in the above-described embodiment, the core material 1 having the side surface 1d having a boat shape has been described, but the shape of the side surface of the core material is different from the boat shape, for example, an elliptical shape, an oval shape, or a polygonal shape. May be. Further, in the above-described embodiment, the ribbon-shaped or sphenoid-shaped core material 1 has been described, but the shape of the core material itself can be changed as appropriate.

Further, in the above-described embodiment, the core material 1 which is a low-resilience urethane foam and is formed by urethane molding has been described. However, the material of the core material can be changed as appropriate. For example, it may be a core material made of high-resilience urethane foam, or it may be a core material made of a rubber material such as natural rubber or synthetic rubber. Further, it may be a core material composed of a three-dimensional resin structure formed by entwining a plurality of linear polyethylene materials with each other.

1 ... Core material, 1a, 1b, 1c ... End side, 1d ... Side surface, 1e ... Recessed part, 1f ... Inclined part, 1g ... Bottom part, 2 ... Surface, 2a ... Recessed part (first concave part), 2b ... Central part, 2c ... 1st end, 2d ... 2nd end, 2e ... Hypotenuse, 3 ... Back, 3a ... Recess (second recess), 3b ... Center, 3d ... 1st part, 3e ... 2nd part, 3f ... 1st Curved part, 3g ... 2nd curved part, 4a ... 1st through hole, 4b ... 2nd through hole, 11 ... 1st convex part, 12 ... 2nd convex part, 13 ... concave part, A ... space, B1, B2 B3, B4 ... width, D1 ... longitudinal direction, D2 ... width direction, D3 ... height direction, K1, K2, K3, K4 ... distance, M ... user, M1 ... back of head, M2 ... shoulder, P ... pillow, P1 ... cover, P2 ... fastener, S ... square.

Claims (4)

A core material that is housed in a pillow cover to which the back of the head of the user is applied and extends in the longitudinal direction and in the width direction intersecting the longitudinal direction.
On the surface facing the occipital region, first recesses provided in the central portion in the width direction and both side portions in the longitudinal direction, and
On the back surface facing the opposite side of the back of the head, a second recess located in the central portion in the longitudinal direction and the width direction, and
With
On the surface, through holes penetrating the core material are formed in the height direction intersecting both the longitudinal direction and the width direction.
The front surface and the back surface are provided with a pair of wave-shaped ends extending in the longitudinal direction and swelling at both ends and the center in the longitudinal direction at both ends in the width direction when viewed from the height direction.
The back surface includes a pair of inclined portions that form a space below the end edge.
The first recess is a core material having a shape that expands in the width direction toward both ends in the longitudinal direction. The depth of the second recess gradually becomes shallower as the distance from the center of the back surface increases.
The core material according to claim 1. The second recess has a shape extending in the longitudinal direction on the back surface.
The core material according to claim 1 or 2. The width of the second recess gradually narrows toward both ends in the longitudinal direction on the back surface.
The core material according to any one of claims 1 to 3.

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