WO2023248470A1

WO2023248470A1 - Pillow

Info

Publication number: WO2023248470A1
Application number: PCT/JP2022/025355
Authority: WO
Inventors: 生央虎谷
Original assignee: トラタニ株式会社
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2023-12-28
Also published as: WO2023248495A1

Abstract

In this pillow, a main support section applies pressure in a planar manner and supports at least the area from the left end of the part at which the trapezius muscle is attached to the occipital bone to the part at which the left sternocleidomastoid muscle is attached to the occipital bone and the area from the right end of the part at which the trapezius muscle is attached to the occipital bone to the part at which the right sternocleidomastoid muscle is attached to the occipital bone in the area between the superior and inferior nuchal lines of the occipital bone in a person lying face upward. An auxiliary support section having a lower support height than the main support section applies pressure to and supports the part of the head on the parietal side from the superior nuchal line in a person lying face upward. There are no members in this pillow which apply pressure to and support the area below at least the 1st cervical vertebra to the 6th cervical vertebra and the areas below the temporalis muscles in a person lying face upward.

Description

pillow

TECHNICAL FIELD The present invention relates to a pillow, and in particular to the function of a pillow that makes breathing easier for the user.

Being able to breathe easily even in a sleeping position is essential for the quality of your sleep. Therefore, pillows are required to have the function of making the user's breathing easier. To facilitate breathing, especially when supine, the head angle must be maintained at an appropriate value. If the head is tilted too far forward (i.e., the jaw is too low), this can compress the airway and make it difficult to breathe, whereas if the head is tilted too far back (i.e., the jaw is too high), the base of the tongue will sink into the throat. This can cause apnea. Therefore, for example, a pillow disclosed in Patent Document 1 is a pillow that supports from the neck to the back of the head and reduces the supporting force of the back of the head to prevent the chin from dropping.

JP2020-081248A

However, in the case of a pillow like the one disclosed in Patent Document 1, the pressure distribution of the pillow is spread over a wide range from the back of the head to the neck, making it easy for the head to shift. In particular, when the head is displaced in the vertical direction of the pillow (direction of height), the center of pressure distribution tends to deviate greatly from the center of gravity of the head up and down in the vertical direction of the pillow 10. The resulting torque causes the head to tilt significantly, impeding breathing.

The purpose of the present invention is to solve the above problems, and by focusing on the stage when the head tends to shift in the vertical direction of the pillow, and by improving this stage, the shift can be effectively prevented. To provide a pillow that suppresses the angle of the head, stably maintains the angle of the head from tilting to a large extent, and does not adversely affect breathing, but rather makes breathing easier.

The pillow according to the invention comprises:
It is an elastic member that protrudes upward, and is located at least from the left end of the part where the trapezius muscle attaches to the occipital bone in the area between the superior and inferior nuchal lines of the occipital bone of a supine person. Pressure on the area up to where the left sternocleidomastoid muscle attaches to the occipital bone and from the right edge of the trapezius muscle attachment to the occipital bone to the area where the right sternocleidomastoid muscle attaches to the occipital bone. a main support part that supports the area in a planar manner,
a sub-support part that has elasticity, has a lower support height than the main support part, and supports the head of the person by applying pressure to the head on the vertex side of the upper nuchal line;
The pillow is characterized in that there is no member that applies pressure to support the person below at least the first cervical vertebrae to the sixth cervical vertebrae and below the temporalis muscle of the person.
In addition, the left sternocleidomastoid muscle attaches to the occipital bone from the left end of the area where the trapezius muscle attaches to the occipital bone in the area between the superior nuchal line and the inferior nuchal line of the occipital bone of a supine person. Hereinafter, the area up to the part where the image is displayed will be referred to as the ``left predetermined area.''
In addition, the sternocleidomastoid muscle attaches to the occipital bone from the right end of the area where the trapezius muscle attaches to the occipital bone in the area between the superior nuchal line and the inferior nuchal line of the occipital bone in a supine person. Hereinafter, the area up to the part where the image is displayed will be referred to as the ``right predetermined area.''

"Occipital bone" refers to the dish-shaped bone SA that forms the back and bottom of the skull (see Figures 1A and 1B). The "external occipital eminence" refers to a convex portion SA1 located at the center of the outer surface of the occipital bone SA. The "superior nuchal line" refers to a ridge line SA4 that runs from the external occipital eminence SA1 to above the mastoid process SC1 in the left-right and lateral directions. The "inferior nuchal line" refers to a raised line SA5 that is below the superior nuchal line and runs laterally to the left and right to the bottom of the mastoid process SC1. "Parietal bone" refers to a pair of rectangular bones SB forming the top and left and right side upper portions of the skull. "Temporal bone" refers to a pair of trapezoidal bones SC forming the lower left and right sides of the skull. As shown in FIG. 1A, the attachment MB1 of the sternocleidomastoid muscle MB is attached from the superior nuchal line SA4 in the occipital bone SA to the superior nuchal line SA4 in the temporal bone SC, and further to the mastoid process SC1 in the temporal bone SC. It is something.

Regarding the support height of the secondary support part, "the support height of the secondary support part is set lower than the main support part" means that the relevant part of the head of a supine person is supported by the main support part and the secondary support part. When comparing the support heights of the main support part and the sub-support part after sinking, it is found that the support height of the sub-support part is set lower than the support height of the main support part. It is the meaning.

"Supporting by applying pressure" means that when the weight (body pressure) of the relevant part of a supine person is applied to the main support part, the reaction force is an elastic pressure (elastic repulsion force) that pushes back against the relevant part. ) is applied, which means that this pushing back elastic pressure (elastic repulsion force) is applied to support. Therefore, if there is mere contact or if the elastic repulsive force is so small that it can be ignored, this means that it is not a concept to support by applying pressure.
Moreover, "supporting in a planar manner by applying pressure" means supporting in a planar manner by applying the above-mentioned pushing back elastic pressure (elastic repulsion force). Therefore, if a single linear object just happens to hit the object, it is not intended to be supported, is not in the category of support, and cannot be supported stably, so apply pressure to support it in a planar manner. It is not a concept that

"There is no member to apply pressure and support" means that there is no member to support (support) by applying a pushing back elastic pressure (elastic repulsion force) to the corresponding location.

According to the pillow of the present invention, the support height of the sub-support part is set lower than that of the main support part, and the main support part with a higher support height faces diagonally upward in the above-mentioned left and right predetermined areas of the occipital bone SA. Pressure is applied to SA7 (see Figure 1B) to support it in a planar manner, and predetermined areas SA7 on the left and right sides that are supported in a planar manner are close to the position of the center of gravity G of the head (see Figure 4B), and the cervical vertebrae C1 to C6 are Because the weight of the head (body pressure) is not distributed at the location of the temporalis muscle MA or the location of the temporalis muscle MA, the weight of the head is concentrated on the main support portion. This concentration prevents the head from easily starting to move in the vertical direction of the pillow 10, effectively suppressing the development of a large shift movement, and maintaining the head angle more stably. Can be done. In other words, it is possible to effectively prevent the head from tilting to a large angle, which has been considered difficult. In addition, in the case of the pillow of the present invention, since the area to which the main support part applies pressure and supports in a planar manner is the above-mentioned left and right predetermined areas SA7 in the occipital bone SA, there is no pressure stress and there is no adverse effect on breathing. .

Rather, in the case of the pillow of the present invention, there is no member that applies downward pressure and supports at least the range from cervical vertebrae C1 to cervical vertebrae C6 to a supine person, and the entire cervical vertebrae C1 to C7 are The airway and neck muscle groups, especially the respiratory muscles sternocleidomastoid MB, anterior scalene, middle scalene, and posterior scalene (not shown), maintain a naturally curved shape. Not pressured. As a result, the airway can be secured to the same extent when the patient is supine as when standing upright, making breathing easier.

Also, even if you sleep in a supine position, you don't always sleep with your face facing straight up, and you often sleep with your face turned slightly to the side. Even when a person sleeps in a supine position in such a state, there is no member that applies pressure and support below the temporalis muscle MA, so there is no blood flow disorder (deterioration of blood flow) due to compression of the temporalis muscle MA. . Since this blood flow disorder is prevented, tension in the temporalis muscle MA and the muscles connected thereto such as the neck and shoulders, dizziness, headache, and disturbance of the autonomic nervous system do not occur, making breathing easier.

In addition, the main support part is attached to the attachment part MB1 of the sternocleidomastoid muscle MB, which attaches from the superior nuchal line S4 of the left temporal bone SC of the supine person to the mastoid process SC1 (see Fig. 1B and Fig. 4A). It has a support part 66 for the left sternocleidomastoid muscle that applies pressure from below to support it (see Fig. 3 and Fig. 4A), and is attached to the above person's right temporal bone SC from the superior nuchal line S4 to the mastoid process SC1. It is preferable to have a right sternocleidomastoid muscle support part 66 that applies pressure to and supports the attachment part MB1 of the sternocleidomastoid muscle MB from below. When the left and right sternocleidomastoid muscle support parts 66 apply pressure to the attachment part MB1 of the sternocleidomastoid muscle MB from below and support it, the sternocleidomastoid muscle MB not only attaches to the sternocleidomastoid muscle MB1 but also the sternocleidomastoid muscle to the supine person. The tension of the sternocleidomastoid muscle MB is relaxed throughout the longitudinal direction, and the movement of the sternocleidomastoid muscle MB during breathing becomes better, and both exhalation and inhalation become smoother, making breathing easier.

When the sternocleidomastoid muscle support part 66 is provided in the main support part, the height of the main support part is higher than the height of the left and right sternocleidomastoid muscle support part on the left and right intermediate part side of the main support part. It is preferable to form it in an inclined, arcuate, or step-like shape so that the height on the 66 side is higher (that is, the height on the left and right outer parts of the main support part is higher). Thereby, when the elastic repulsion force of the sternocleidomastoid muscle support portion 66 is insufficient at the attachment portion MB1 of the sternocleidomastoid muscle MB, this can be effectively supplemented.

In the case of the pillow of the present invention, as described above, it is possible to effectively prevent the head from shifting in the vertical direction of the pillow 10, but the force of the upward displacement of the pillow 10 in the vertical direction is large enough to prevent this. If you want to make a strong stop, you can further provide a main regulating part that protrudes higher than the sub-support part at a position opposite to the main support part with respect to the sub-support part (Figures 4A and 6). 8 (see reference numeral 90). This main regulating portion can be formed separately or integrally with the sub-supporting portion.

The main support portion may be formed to be inclined or curved so as to approach the shoulder of the person as it goes outward in the left and right lateral direction of the person (see reference numeral 660 in FIG. 5(a)).

FIG. 1 is a perspective view of a human skull. It is a diagram of the back of a person's head. (a) is a perspective view of a pillow according to a first embodiment of the present invention. (b) is an exploded view of the pillow shown in (a). FIG. 3 is a perspective view of the base shown in FIG. 2; FIG. 3 is a top view of the pillow shown in FIG. 2; 4A is a cross-sectional view taken along the center line CL shown in FIG. 4A. FIG. (a) is a perspective view of a base according to a modification of the first embodiment of the present invention. (b) is a top view of the base shown in (a). FIG. 3 is an exploded view of a pillow according to a second embodiment of the present invention. FIG. 7 is a sectional view taken along the center line in the left-right and lateral directions of the pillow according to the second embodiment. FIG. 3 is an exploded view of a pillow according to a third embodiment of the present invention.

[First embodiment]
FIG. 2(a) is a top view of the pillow 10 according to the first embodiment of the present invention, and FIG. 2(b) is an exploded view of the pillow 10. The pillow 10 has a flat rectangular plate shape and consists of three layers: a base (bottom layer) 20, an intermediate layer 30, and a surface layer 40. These layers 20-40 are all made of elastic, flat rectangular plate-shaped soft foamed resin, and are bonded to each other. Among the three layers, the long sides of the pillow 10 in the left and right lateral directions and the short sides of the pillow 10 in the vertical direction have the same length. On the other hand, the base 20 has the largest thickness (height), and the intermediate layer 30 and the surface layer 40 have approximately the same thickness.

FIG. 3 is a perspective view of the base 20. The upper surface 21 of the base 20 is flat, and only the main support part 60 and the sub-support part 80 protrude upward from it. Both

support parts

60 and 80 are made of a soft foamed resin that is harder than the three layers 20-40, and are bonded to the upper surface 21 of the base 20. The main support part 60 has an elongated rectangular parallelepiped shape, is located near one long side 22 of the base 20 (the positive side of the X axis in the figure), and has a longitudinal direction parallel to the long side 22. The sub-support part 80 has a rectangular parallelepiped shape that is shorter than the main support part 60 and is located away from the main support part 60 near the long side 23 on the opposite side of the base 20 (the negative side of the X-axis in the figure). The longitudinal direction is parallel to the long side 23. Both the upper surface 61 of the main support part 60 and the upper surface 81 of the sub-support part 80 are rectangular planes in a state where no load is applied from above, and are parallel to the upper surface 21 of the base 20.

As shown in FIG. 2, a hole 41 is formed in the surface layer 40 above the main support part 60 and the sub-support part 80 (in the positive direction of the Z-axis in the figure). The hole 41 spreads from the long side 42 of the surface layer 40 on one side (the positive side of the X axis in the figure) to the center part, and exposes the part 31 of the intermediate layer 30 that covers the main support part 60 and the sub support part 80 on the inside. . A main regulating part 90 is installed between the hole 41 and the long side 43 of the surface layer 40 on the opposite side (the negative side of the X axis in the figure), and the main regulating part 90 is installed between the hole 41 and the long side 43 of the surface layer 40 on the opposite side (the negative side of the X axis in the figure). One sub-regulating part 95 is installed on both sides. Both regulating

portions

90 and 95 are made of elongated rectangular parallelepiped-shaped soft foamed resin, such as soft urethane foam, and are adhered to the upper surface 44 of the surface layer 40. The main regulating part 90 extends parallel to the left and right lateral directions of the pillow 10 (the Y-axis direction in the figure), and the sub-regulating part 95 extends parallel to the longitudinal direction of the pillow 10 (the X-axis direction in the figure). It's growing.

FIG. 4A is a top view of the pillow 10, and FIG. 4B is a cross-sectional view taken along the center line CL shown in FIG. 4A. The head HD of a supine person is accommodated inside the hole 41 of the surface layer 40 and placed on the upper surface 61 of the main support section 60 and the upper surface 81 of the sub-support section 80. At this time, since the intermediate layer 30 made of a soft elastic sheet material covers the main support part 60 and the sub support part 80, the head HD does not have any corner of the main support part 60 or the sub support part 80. It is hard to feel, and it feels softer than when the main support part 60 and the sub support part 80 touch directly. Furthermore, the head HD is restricted by a main restriction part 90 and a sub-restriction part 95 when the movement thereof attempts to exceed an allowable range. That is, the protrusion of the surface layer 40 from the hole 41 toward the long side 43 of the surface layer 40 (in the negative direction of the X axis in the figure) is prevented by the side surface 91 of the main regulating portion 90, and Protrusion in the direction (in the figure, in the Y-axis direction) is prevented by the side surface of the sub-regulating portion 95.

[Details of main support part and sub support part]
As shown in FIGS. 3 and 4A, the upper surface 61 of the main support part 60 and the upper surface 81 of the sub-support part 80 are both symmetrical in the left and right lateral directions (Y-axis direction in the figure) with respect to the center line CL. be.

The width W1 of the upper surface 61 of the main support part 60 in the left-right lateral direction (Y-axis direction in the figure) of the pillow 10 shown in FIG. 3 is wider than the width W2 of the upper surface 81 of the sub-support part 80, but as shown in FIG. 4A, In addition, it is narrower than the width of the head HD, and more specifically, it is slightly narrower than the width of the left and right ears. Further, the center of the upper surface 61 of the main support part 60 in the left-right and lateral directions is such that the upper side is located at the center in the left-right and lateral directions of the upper nuchal line SA4 of the supine person shown in FIG. It is positioned near the lower edge of the occipital bone SA below the center of the person's inferior nuchal line SA5 in the left and right direction. Both sides of the upper surface 61 of the main support part 60 in the left-right and lateral directions from the center are curved so that the upper sides are directed upward in the vertical direction of the pillow 10 (in the figure, the X-axis direction) to enlarge the area. As a result, for a supine person, the upper surface 61 of the main support part 60 extends from the left end TR1 of the trapezius muscle TR attached to the occipital bone SA to the left sternocleidomastoid muscle MBP that attaches to the occipital bone SA. Pressure is applied in a plane to the region SA7 and the region SA7 from the right end TR2 of the trapezius muscle TR attached to the occipital bone SA to the part of the right sternocleidomastoid muscle MBP attached to the occipital bone SA. ing. Furthermore, this main support part 60 is integrally provided with a support part 66 for the sternocleidomastoid muscle at both left and right ends by extension in the left and right lateral directions, and the upper surface of the support part 66 for the sternocleidomastoid muscle is placed above the temporal bone SC. The left and right sternocleidomastoid muscles MB1, which attach from the nuchal line S4 to the mastoid process SC1, are supported by applying pressure from below (FIG. 1B, FIG. 3, FIG. 4A, and FIG. 4B).

The height H1 of the upper surface 61 of the main support part 60 with respect to the upper surface 21 of the base 20 shown in FIG. 3 is higher than the height H2 of the upper surface 81 of the sub-support part 80. For example, the height H1 of the upper surface 61 of the main support portion 60 is within a range of 3 cm to 9 cm. On the other hand, the height H2 of the upper surface 81 of the sub-support part 80 is within the range of 1 cm to 5 cm. What is more important about these heights H1 and H2 is that the height of the main support part 60 and the sub-support part 80 after sinking when the weight of the head HD is applied is more important than the height when the weight of the head HD is not applied. The support height is important, and in this embodiment as well, the support height of the main support part 60 is made higher than the support height of the sub-support part 80, as shown in FIG. 4B.

As shown in FIGS. 4A and 4B, the main support part 60 is located on the parietal side of the first cervical vertebra C1 of a supine person, and the range from at least the first cervical vertebra C1 to the sixth cervical vertebra C6 extends from below. No member is provided that would apply pressure to support it. Moreover, no member is provided that would apply pressure from below to support the temporalis muscle MA of the person mentioned above. Therefore, no pressure is applied from below to at least the range from the first cervical vertebrae C1 to the sixth cervical vertebrae C6 and the temporalis muscle MA of the above person.

[Modification of the first embodiment]
(A) The above shapes, sizes, and hardnesses of the base 20, intermediate layer 30, and surface layer 40 are merely examples, and they may be changed in various ways. In particular, the intermediate layer 30 and the surface layer 40 may have significantly different thicknesses, and the three

layers

20, 30, and 40 may have significantly different hardnesses.

(B) Both the upper surface 61 of the main support part 60 and the upper surface 81 of the sub-support part 80 are not limited to planes parallel to the upper surface 21 of the base 20. The upper surface 61 of the main support part 60 may be formed in an inclined shape, an arc shape, or a step shape so that the height of the sternocleidomastoid muscle support part 66 side at both left and right ends is higher than that of the left and right intermediate parts. good. Further, although there are corners on both the circumferences of the upper surface 61 of the main support part 60 and the upper surface 81 of the sub-support part 80, these are not essential to the present invention, and may be removed by chamfering or rounding.

(C) In the pillow 10, the base 20, middle layer 30, and surface layer 40 are bonded to each other. However, the pillow according to the present invention is not limited to this laminated structure, and may be integrally molded as a whole. Further, since the intermediate layer 30 and the surface layer 40 are not essential to the present invention, both can be omitted. In particular, instead of covering the entire upper surface 21 of the base 20 with the intermediate layer 30, only the main support part 60 and the sub-support part 80 may be covered with a film or sheet that is softer than either of them. Furthermore, in the gap between the base 20 and the middle layer 30 or the gap between the middle layer 30 and the neck, as shown in FIG. 4B, the repulsion force due to elasticity of cotton or the like is negligible or negligible. It may be stuffed with something so flexible that it can be considered. If the intermediate layer 30 itself has such flexibility, the intermediate layer 30 may be thick so as not to create a gap between the intermediate layer 30 and the base 20 or the neck.

(D) As shown in FIG. 2, the main regulating portion 90 is installed on the upper surface 44 of the surface layer 40. On the other hand, if the surface layer 40 is omitted, the main regulating part may be installed on the upper surface 21 of the base 20. In this case, the main regulating part may be located on the side opposite to the sub-support part 80 with respect to the main support part 60 (on the negative side of the X-axis in FIG. 3), and should protrude higher than the sub-support part 80. The main restriction part is the side surface facing the sub-support part 80, and can strongly prevent the head HD at the position shown in FIG. 4A from moving upward in the vertical direction of the pillow 10 beyond the permissible range.

(E) As shown in FIGS. 2 and 4A, the side surface 91 of the main regulating part 90 facing the sub-supporting part 80 is the same as the hole 41 in the surface layer 40 in the left-right lateral direction of the pillow 10 (Y-axis direction in the figure). reasonably wide. In addition, like the upper surface 81 of the sub-supporting part 80 shown in FIG. It may be narrower so that it is located on the inside.

(F) As shown in FIGS. 3 and 4A, the side surface 63 of the main support portion 60 is curved. The side surface 82 of the sub-support part 80 facing the main support part 60 may also be curved so as to approach the main support part 60 as it moves away from the center line CL in the left-right lateral direction of the pillow 10 (Y-axis direction in the figure). .

(G) As shown in FIGS. 3 and 4B, the side surface 63 of the main support section 60 facing the sub-support section 80 is inclined, and the side surface 82 of the sub-support section 80 facing the main support section 60 is inclined. . However, neither slope is essential to the invention, and either

side surface

63, 82 may be perpendicular to the top surface 21 of the base 20.

(H) As shown in FIG. 4B, the side surface 62 of the main support part 60 that does not face the sub-support part 80 is perpendicular to the upper surface 21 of the base 20. However, if the main support part 60 is located in a state where no pressure is applied to the first cervical vertebra C1, the side surface 62 will move toward the thoracic vertebrae side (in the figure, X It may also be inclined toward the positive side of the axis. In this case, the inclination angle or shape of the side surface 62 may be designed so that the side surface 62 does not apply pressure to the first cervical vertebra C1.

(I) As shown in FIG. 4A, the side surface 62 of the main support part 60 that does not face the sub-support part 80 is parallel to the left-right lateral direction (the Y-axis direction in the figure) of the pillow 10. In addition, the side surface of the main support part that does not face the sub-support part may be bent or curved as described below.

FIG. 5(a) is a perspective view of a base 200 according to a modification of the first embodiment of the present invention, and FIG. 5(b) is a top view of the base 200. Base 200 differs from base 20 shown in FIG. 3 only in the following respects. The side surface 620 of the main support part 60 that does not face the secondary support part 80 approaches the shoulder SH as it goes outward from the same location as the cervical vertebrae C1-C7 in the left-right lateral direction (Y-axis direction in the figure) of a supine person. It is curved like this.

The side surface 620 of the main support part 60 is located on the parietal side of the first cervical vertebra C1 (on the negative side of the X axis in the figure) at the same location as the first cervical vertebra C1 in the left and right lateral directions (Y-axis direction in the figure) of a supine person. Located in As a result, as shown in FIG. 5(b), at least the range from the first cervical vertebra C1 to the sixth cervical vertebra C6 is not weighted with respect to the intermediate layer 30 and base 20 immediately below, so that There is no member to apply pressure. Therefore, the entire cervical vertebrae C1-C7 naturally maintain the same curved shape as when standing upright. Furthermore, even if the first cervical vertebra C1 is displaced toward the parietal side (to the negative side of the X axis in the figure) due to involuntary changes in the body position of a supine person, the Since the first cervical vertebra C1 is difficult to reach, the airway is unlikely to be compressed by the pressure of the main support portion 60. Conversely, even if the first cervical vertebra C1 is displaced to the thoracic vertebrae side (in the figure, the positive side of the Since it extends long toward the positive side of the X-axis in the figure, the pressure of that portion 660 can completely support the part MB1 of the sternocleidomastoid muscle MB attached to the mastoid process SC1, all the way to the lower side in the height direction. .

(J) The main support portion may be cut out from the same location as the cervical vertebrae of the supine person in the left and right directions. For example, a portion of the central portion 67 of the main support portion 60 shown in FIG. 5 including the side surfaces 620, or the entire central portion 67 may be removed. In this case, even if the first cervical vertebra C1 is displaced toward the parietal side, it cannot be located above the main support part 60, so the airway is not compressed by the pressure of the main support part 60.

[Second embodiment]
Next, a second embodiment of the present invention will be described. FIG. 6 is an exploded view of the pillow 100 of the second embodiment, and FIG. 7 is a sectional view taken along the center line in the left and right lateral directions of the pillow. It is a perspective view of a base part. In the following, members that are the same as or correspond to the members of the first embodiment will be given the same names and symbols, and descriptions thereof will be omitted.

The pillow 100 of the second embodiment includes a base layer 50 below the base 20. The material of the base 20 and the base layer 50 is almost the same as that of the layers 20-40 in the first embodiment, and both are made of a flat rectangular plate-shaped soft foamed resin, for example, a soft urethane foam with a hardness of 25% < 60N. can do. Base 20 and base layer 50 are adhered to each other.

On the upper surface 21 of the base 20,

main support parts

60, 60 are provided to protrude upward. The

main support parts

60, 60 in this embodiment are notched at the center in the left and right lateral directions so as to be able to receive the external occipital eminence SA1, and are symmetrically spaced apart from each other, with a space 70 between them. It is formed. The main supports 60, 60 are identical except for being symmetrical. The space 70 is located on the extension line of the cervical vertebrae of a supine person, and its width in the left and right lateral directions is set to be larger than the width in the left and right lateral directions of the external occipital eminence SA1 of the supine person. ing. In this embodiment, the base end of the main support section 60 corresponds to the upper surface 21 of the base 20, and the upper end thereof corresponds to the upper surface 61 of the main support section 60. The edge of the upper surface 61 of the main support part 60 on the negative side of the X axis (therefore, on the side of the sub-support part 80 as described later) is provided with a sloped part 64 that slopes downward as if chamfered. There is. On the other hand, the side surface 62 of the main support section 60 on the positive side of the X-axis (the side surface 62 of the main support section 60 that does not face the sub-support section 80) is in the left-right lateral direction (in the Y-axis direction in the figure) of the supine person. It slopes from the same location as cervical vertebrae C1-C7 toward the shoulder SH as it goes outward.

The sub-support part 80 in the second embodiment is configured as a part of the flat base 20. Specifically, in the base 20 of the second embodiment, through-holes 110 are formed symmetrically at locations below the temporalis muscle MA of a supine person, and between the left and right through-holes 110. The occipital region on the parietal side of the upper nuchal line SA4 (in the present embodiment, the area SA3 on the parietal side of the occipital bone SA) is placed on the continuous portion 120 of. The part of this continuous part 120 on which the head is placed corresponds to the sub-support part 80 in this embodiment. In this case, the base end of the sub-supporting part 80 corresponds to the base end in the thickness direction of the continuous part 120 in the region, that is, the lower surface (back surface) of the base 20 in the region, and the upper end of the sub-supporting part 80 corresponds to The upper end portion in the thickness direction of the continuous portion 120 in the region, that is, the upper surface 21 of the base 20 in the region corresponds.

As shown in FIG. 8(a), the width of the connecting portion 120 in the left and right lateral directions (Y-axis direction in the figure) is greater than the distance between the stop portions MB1 of the left and right sternocleidomastoid muscles MB of a supine person. It is set to be narrow.

The upper surface 21 of the base 20 is also provided with a parietal side regulating section 130 and a side regulating section 95. The parietal side regulating part 130 is provided so as to protrude upward from the upper surface 21 of the base 20, and further has an A protrusion 90 is formed that protrudes in the positive direction. The width of the side surface 91 of the protruding portion 90 closest to the top of the head (therefore, the convex end surface 91 that protrudes most in the positive direction of the X-axis) in the left-right lateral direction is narrower than the width of the connecting portion 120 in the left-right lateral direction. This protrusion 90 restricts displacement of the head HD in the negative direction of the X-axis. In the second embodiment, this protruding portion 90 corresponds to a “main regulating portion”.

The side regulating portions 95 are provided further outside the left and right main supporting

portions

60, 60, and are configured to protrude upward from the upper surface 21 of the base 20, respectively. The left and right

side regulating parts

95, 95 have the same configuration, and their protruding height (height in the positive direction of the Z axis measured from the top surface of the base) is larger than the protruding height of the main support part 60. It is set to be. The left and right

side regulating portions

95, 95 regulate the positional shift of the head HD in the left and right lateral directions (Y-axis direction in the figure) that exceeds the permissible range. In the second embodiment, the

side restriction portions

95, 95 correspond to “sub-restriction portions”.

[Third embodiment]
Next, a third embodiment of the present invention will be described. FIG. 8 is an exploded view of a pillow 300 according to the third embodiment. In the following, members that are the same as or correspond to those of the first and second embodiments will be given the same names and symbols, and descriptions thereof will be omitted.

The pillow 300 of the third embodiment differs from the pillow 100 of the second embodiment only in that a through hole 140 is provided at a position closer to the main support portion 60 of the continuous portion 120 in the pillow 100 of the second embodiment. The through hole 140 is formed as a long hole extending in the X-axis direction, and extends from the space 70 between the left and right

main support parts

60 and 60 to the front of the area corresponding to the sub support part 80. Further, this through hole 140 is located at the external occipital protuberance SA1 when the person lies supine with the region SA2 between the superior nuchal line SA4 and the inferior nuchal line SA5 of the occipital bone SA placed on the

main support parts

60, 60. It is located below, and its width in the left and right lateral directions is set to be larger than the width in the left and right lateral directions of the external occipital eminence SA1. As a result, the external occipital protuberance SA1 of a supine person is positioned within the through hole 140 when viewed from above.

The pillow 300 of the third embodiment configured as described above has substantially the same effects as the pillow 100 of the second embodiment. In addition, a through hole 140 is provided below the external occipital protuberance SA1 of a supine person, so that no pressure is applied to the external occipital protuberance SA1 in a supine state. Further, since the through hole 140 is formed as a long hole extending in the X-axis direction, even if the head HD shifts in the X-axis direction, no pressure is applied to the external occipital protuberance SA1.

[Modifications of the second and third embodiments]
(K) The through hole 110 in the second and third embodiments does not necessarily have to be penetrating, and may be configured as a hole with a bottom. Any structure including a hole with a bottom and a hole without a bottom may be used as long as it is a "concave" structure. This point is the same for the through hole 140 of the third embodiment, and it may be configured as a "recess" regardless of whether it is bottomed or bottomless. Furthermore, the inside of such a recess does not need to be completely hollow; for example, it may be filled with a material that is much more flexible than surrounding materials and has little or no repulsive force even when weight is applied thereto. .

(L) Although the through hole 140 in the third embodiment is configured as a long hole, it does not necessarily have to be a long hole (elliptical when viewed from above), and may be a circular hole having a perfect circular shape when viewed from above or other shapes. It may also be a recess.

[Modifications of the first, second and third embodiments]
(M) In the first, second, and third embodiments, the range to be supported by applying pressure is not limited to the vicinity of the lower nuchal line SA5, but extends beyond the lower nuchal line SA5 to the lower edge SA6 of the occipital bone SA ( (See FIG. 1B) may be supported by applying pressure. The main support part 60 shown in FIG. 5 of the first embodiment, the main support part 60 shown in FIG. 6 of the second embodiment, and the main support part 60 shown in FIG. 9 of the third embodiment are all located on the left and right sides of the pillow. Since the pillow is structured to protrude downward in the vertical direction (direction of height) as it goes outward in the lateral direction, the area to be supported by applying pressure is beyond the inferior nuchal line SA5 and the lower edge SA6 of the occipital bone SA (Fig. 1B The sternocleidomastoid muscle support section 66 can support the sternocleidomastoid muscle MB attached to the mastoid process SC1 by applying pressure to the lower end in the height direction.

(N) In addition, in the first, second, and third embodiments, the support is applied by applying pressure on the surface of the main support part 60, but when the weight of the head is not applied, many small Even if it has the form of a group of protrusions, and when the weight of the head is applied, the large number of small protrusions collapses into a planar shape, there is no problem with the concept of planar shape of the present invention, and the present invention This is included in the concept of planar support.

(O) Also, in the first embodiment, the surface of the main regulating part 90 on the side of the sub-supporting part 80 is a straight left and right surface, and in the second and third embodiments, the surface of the main regulating part 90 on the side of the sub-supporting part 80 is a continuous plane. Although the convex protrusion 90 is formed to be narrower than the width of the support part 120 in the left and right lateral directions, the present invention is not limited to this. It may be formed into a concave recess that is narrower than the width of the human parietal bone in the left and right directions.

Claims

It is an elastic member that protrudes upward, and is located at least from the left end of the part where the trapezius muscle attaches to the occipital bone in the area between the superior and inferior nuchal lines of the occipital bone of a supine person. Pressure on the area up to where the left sternocleidomastoid muscle attaches to the occipital bone and from the right edge of the trapezius muscle attachment to the occipital bone to the area where the right sternocleidomastoid muscle attaches to the occipital bone. a main support part that supports the area in a planar manner,
a sub-support part that has elasticity, has a lower support height than the main support part, and supports the head of the person by applying pressure to the head on the vertex side of the upper nuchal line;
A pillow characterized in that there is no member that applies pressure to support the person below at least the first cervical vertebrae to the sixth cervical vertebra and below the temporalis muscle of the person.
The main support section supports the left sternocleidomastoid muscle by applying pressure from below to the sternocleidomastoid muscle, which attaches from the superior nuchal line of the person's left temporal bone to the mastoid process. and a support part for the right sternocleidomastoid muscle that applies pressure from below to support the sternocleidomastoid muscle attached from the superior nuchal line of the right temporal bone of the person mentioned above to the mastoid process. 2. Pillow according to claim 1, characterized in that:
3. The pillow according to claim 2, wherein the main support part is formed so that the height of the support is higher on the left and right sternocleidomastoid muscle support part side than on the left and right intermediate part side.
A main regulating part that is located on the side opposite to the main support part with respect to the sub-support part and projects higher than the sub-support part, and prevents the head from shifting upward in the height direction of the person. The pillow according to any one of claims 1 to 3, further comprising:
According to any one of claims 1 to 3, the main support portion is inclined or curved so as to approach the shoulders of the person as it goes outward in the left and right lateral directions of the person. pillow.