JPH11155696A - Floor cushion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor cushion having a height difference between a position for setting a hip and a position for setting legs for sitting cross-legged in a condition that the backbone is normally curved. SOLUTION: A soft member 10, which is formed from soft and elastic materials and has a regular thickness, and a hard member 12, of which a position of an upper surface is higher than that of the soft member 10 and which is relatively hard, are attached in one. A section of difference in level is formed between the hard member 12 and the soft member 10 in a manner that the backbone can be naturally curved in a condition that the hip is put on the hard member 12 and the legs are on the soft member 10 as well as in a standing condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion for sitting on a cross-hair.

[0002]

2. Description of the Related Art Conventionally, as a cushion used for sitting in a Japanese-style room, a cushion having a soft and flat shape provided with cotton or the like inside as generally used is used. No cushion was used. In addition, 6
As disclosed in Japanese Patent No. 77607, etc., a cushion having two layers on one side in the middle of a cushion and folding the upper part of the two-layer portion on the other side to be used has been proposed as a cushion for cross-section. ing.

[0003]

In the case of the former of the prior art described above, if the user sits on a flat cushion while cross-linking, as shown in FIG.
As shown in FIG. 12, the spine 15 cannot maintain a normal S-shaped curve, and is greatly curved rearward, resulting in a state in which the back is rounded. It was often the cause.

[0004] In the case of the latter of the prior art, in which one side is higher than the other side, both the high and low parts have the same elasticity. The height of the buttocks and the height of the buttocks were almost the same or slightly different, if any. Furthermore, if the high part is soft even if there is a difference in height, the buttocks will sink, and as shown in FIG. 12, tilted downward with respect to the center of gravity line 22 as shown in FIG.
8 curves backward and the S-shape collapses. Further, as shown in FIG. 12, the angle at which the pelvis line 20 taken horizontally from the front end of the pelvis 16 intersects the center line 21 of the body becomes smaller than 90 degrees, and the burden on the muscles of the lumbar region and the lumbar vertebra 18 increases, resulting in lower back pain. Was the cause.

The present invention has been made in view of the above-mentioned conventional problems, and there is a difference in height between the positions where the buttocks and the legs are placed, and it is possible to sit with the backbone crossed in a normally curved state. The aim is to provide a possible cushion.

[0006]

SUMMARY OF THE INVENTION A cushion according to the present invention is made of a soft and elastic material, and has a soft member having a substantially constant thickness, and a relatively hard hard member having an upper surface higher than the soft member. A member is integrally provided, a step is formed between the hard member and the soft member, a hip is placed on the hard member, and the spine is placed in a substantially natural state in a state in which the leg is placed on the soft member and the spine is upright. It is a cushion with a curved shape.

Further, the soft member and the hard member are cushions in which the lower surfaces are located on the same plane and the pelvis does not incline backward when the buttocks are placed. The step between the soft member and the hard member is such that the femur becomes substantially horizontal when sitting cross-legged.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. This is a soft and elastic flat plate-shaped soft member 10 and a hard member 12 such as hard foamed urethane and the like having a height of about twice or more the height of the soft member 10 and a low elasticity. The cushion 14 to be formed.

The soft member 10 is made of a soft material generally used for a cushion, such as sponge or cotton, and the hard member 12 is made of a hard sponge, hard urethane, or the like. It is made of a material that has no hardness and moderate softness.

The soft member 10 and the hard member 12 are covered with a cover having such a shape so as to form a cushion 14 by contacting one side surface, or a portion where the soft member 10 and the hard member 12 are in contact with each other. Provide a velcro or hooks and secure. Further, the soft member 10 of this embodiment
Each of the hard members 12 has such a size that a person can sit straight even on the upper surface thereof.

The method of use is that after a person places his buttocks on the hard member 12 of the cushion 14, the legs are lowered toward the soft member 10 and assembled. Since the hard member 12 is hard, it does not sink much due to the weight of the body weight, maintains a constant height, and is in a state where the legs are lowered obliquely downward. At this time, the spine is curved in an S shape as shown in FIG.
Is level with the ground and has less strain on the waist. In addition, when the person stands naturally, the pelvis 16 and the lumbar spine 18 are slightly curved forward as shown in FIG. 3, and when the person sits on the cushion 14 of this embodiment, as shown in FIG. And the center line of the body and the center line of the body coincide with each other in the vertical direction, and the angle at which the pelvis line 20 and the center line 22 intersect is 90 degrees, so that the burden on the spine is small.

Next, a second embodiment of the present invention will be described with reference to FIG.
It will be described based on. The hard member 24 forming the cushion 14 is about half the size of the soft member 26 and has a height equal to or slightly higher than the soft member 26. The hard member 24 is installed on the soft member 26, and is fixed by a band 28 provided on both side surfaces, a magic tape or a hook provided on the contact surface. The hard member 24 having the band 28 can be used for a commonly used cushion, and can be installed at a comfortable position.

Next, a third embodiment of the present invention will be described with reference to FIG. The hard member 30 and the soft member 32 forming the cushion 14 are formed and used in the cushion of the first embodiment in the same manner. The hard member 30 is semi-cylindrical and has a height about twice or more the height of the soft member 32. The soft member 32 has a semi-cylindrical shape having a diameter equivalent to the diameter of the hard member 30, and abuts each plane. Form a cushion. In this case, the size is such that a person can also sit straight on the upper surface of the soft member 32.

In a fourth embodiment of the present invention, as shown in FIG. 7, a semi-cylindrical hard member 34 is
6 is a cushion 14 in a shape set on the upper surface. Hard member 34
Has a height that is equal to or slightly higher than the soft member 36, and is provided with a velcro tape, a hook, or the like on the surfaces that are in contact with each other. Further, the cover may be fixed with a cover having such a shape.

Next, a fifth embodiment of the present invention will be described with reference to FIG. Since the soft member 36 is the same as that of the fourth embodiment, the same reference numerals are given and the description is omitted. The hard member 38 is a substantially rugby ball-shaped cylinder, one side surface of which is rounded like the curved surface of the soft member 36, and the soft member 3.
It has a height equal to or slightly higher than 6. Each fixing method is the same as in the above embodiment.

In the cushion 14 of this embodiment, the hard member 38 is rounded in the direction in which the leg is directed toward the soft member 36, so that the surface on which the buttocks of the hard member 38 are placed has a roundness corresponding to the buttocks. It is shaped and the crossed legs are positioned around the lower part of the femur, so that it can be staggered in a more stable state.

Next, a sixth embodiment of the present invention will be described with reference to FIG.
It will be described based on. The soft member 40 has a rectangular shape having a certain height, and the hard member 42 has a semi-cylindrical shape having a diameter equivalent to the length of one side surface of the soft member 40. The hard member 42 has a height equal to or slightly higher than the soft member 40. The hard member 42 is placed on the soft member 40 and fixed by the same method as described above.

Next, a seventh embodiment of the present invention will be described with reference to FIG.
Description will be made based on 0. The cushion according to this embodiment is formed by providing folds 46 at five locations at equal intervals on a rectangular sheet 44 having a certain thickness, and folding the sheet 44 with the folds 46. To use, place your hips in the folded area and lower your legs toward the unfolded area. The material forming the seat 44 is a hard sponge or urethane foam, and does not sink deeply when a person sits down. Further, the height and width of the position where the buttocks are placed and the position where the legs are assembled can be easily changed according to the physique and preference.

The cushion of the present invention is not limited to the above embodiments, but may be appropriately changed in the material, the shape or the size of each member.

[0020]

The cushion of the present invention has a height difference between the waist and the legs when sitting cross-legged, so that the spine maintains the same physiological curvature as in the upright posture. It is possible to prevent back pain and back pain caused by long-time cross-linking, and to prevent deterioration of these.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a cushion according to a first embodiment of the present invention.

FIG. 2 is a situation diagram showing a state of a spine and a pelvis of a human body when the user sits on a cushion with a cross cushion according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram showing a state of a pelvis in an upright state.

FIG. 4 is a schematic diagram showing a state of a lumbar spine and a pelvis of a human body when the user sits on a cushion in the first embodiment of the present invention while cross-legging.

FIG. 5 is a side view showing a cushion according to a second embodiment of the present invention.

FIG. 6 is a perspective view showing a cushion according to a third embodiment of the present invention.

FIG. 7 is a perspective view showing a cushion according to a fourth embodiment of the present invention.

FIG. 8 is a perspective view (a) and a plan view (b) showing a cushion according to a fifth embodiment of the present invention.

FIG. 9 is a perspective view (a) and a plan view (b) showing a cushion according to a sixth embodiment of the present invention.

FIG. 10 is a perspective view showing a cushion according to a seventh embodiment of the present invention.

FIG. 11 is a schematic diagram showing the spine and pelvis of a human body when sitting cross-legged on the floor.

FIG. 12 is a schematic diagram showing a lumbar vertebra and a pelvis of a human body when sitting cross-legged on the floor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Soft member 12 Hard member 14 Cushion

Claims (3)

[Claims] 1. It is made of a soft and elastic material,
A soft member having a substantially constant thickness and an upper surface higher than the soft member and a relatively hard member are provided integrally,
A seat cushion in which a step is formed between the hard member and the soft member, the hips are placed on the hard member, and the spine has a natural curved shape substantially in a state in which the spine is upright when the legs are placed on the soft member. 2. The cushion according to claim 1, wherein the lower surface of the soft member and the lower surface of the hard member are located on the same plane, and the pelvis does not incline backward when the buttocks are placed. 3. The cushion according to claim 1, wherein the step between the soft member and the hard member is such that the femur becomes substantially horizontal when sitting cross-legged.