JP3120773U - mattress - Google Patents

Abstract

[PROBLEMS] To prevent depression of the buttocks where the most load is applied while maintaining a simple structure, to prevent a back pain by maintaining a natural posture, and to effectively distribute body pressure to reduce muscle tension. In addition, it provides a mattress that is excellent in falling asleep and recovering from fatigue and that can also prevent the occurrence of pressure ulcers.
A mattress in which cushion members 1 and 2 made of a soft elastic body such as urethane foam are formed by stacking a single layer or a plurality of layers, and maintaining a posture made of a soft elastic body harder than the cushion members 1 and 2. The body pressure dispersion hardness adjusting member 4 is embedded so as to cover at least the waist A to the thigh C around the heel sacrum B along the mattress's supine sleeping direction, and from the side of the mattress side of the hardness adjusting member The cross-sectional shape that was seen was the shape in which the vicinity of the heel sacrum B was the thickest, and the thickness became thinner toward the waist A and thigh C.
[Selection] Figure 1

Description

  The present invention relates to a mattress composed of a single layer or a plurality of layers of cushion members made of a soft elastic body such as urethane foam, and in particular, maintains a natural posture without falling off and disperses body pressure in the vicinity of the buttocks where a large load is applied. This relates to a mattress that achieves both.

  An ideal mattress is a relaxing and relaxed muscle that can be relaxed at bedtime, with good sleep, no fatigue, and a natural posture close to standing without falling off the hips to prevent back pain. It has good elasticity and is easy to roll over. The state in which the muscles are tense means, for example, a state in which the load is concentrated on a body part such as the head, back, buttocks, and legs when the user is supine on the board, and the whole body becomes a bridge shape. Therefore, an ideal mattress needs to be a mattress excellent in the ability to disperse body pressure by supporting the body weight not by the part but by the whole body. Conventionally, in order to realize this, various contrivances have been made, such as using a low-resilience urethane foam or imparting a corrugated shape to the urethane foam surface by profile processing.

  However, if the entire foam has the same hardness or the same structure, the heavy buttocks drop and the posture becomes unnatural, causing fatigue and back pain. Therefore, in order to prevent the lowering of the buttocks, the mattress is divided to increase the hardness in the vicinity of the buttocks (the waist, heel sacrum, and thighs), and the intermediate layer is provided with a sheet-like member such as a silicon gel sheet. Proposed.

  By the way, when the mattress is divided as described above to increase the hardness in the vicinity of the buttocks (the waist, the sacrum, and the thigh), and to prevent the sacrum from falling, the waist, the sacrum, and the thigh are divided into three sections. When looking at, the load per unit area is the heaviest in the sacrum, so the pressure is relatively concentrated on the sacrum. As a result, the waist and thighs float and bridge, causing intestinal lumbar muscles to be tense and causing fatigue, and causing pressure ulcers in long periods of bed. In addition, when a sheet-like member such as a silicon gel sheet is arranged in the intermediate layer, the feeling of bottoming out of the bed can be reduced, but the whole sheet-like member has a hammock shape, so this is not effective for preventing falling off the bottom. It is enough.

  The present invention effectively solves the contradictory problems of maintaining the posture and dispersion of body pressure, which have been difficult in the past, with a simple structure. Provides a mattress that prevents back pain while maintaining a proper posture, and helps to relax muscles by effectively dispersing body pressure, providing good sleep and recovering from fatigue, and also preventing the development of pressure ulcers It is intended to do.

In order to achieve the above object, the present invention adopts the following configuration.
That is, the mattress according to claim 1 is a mattress in which a cushion member made of a soft elastic body such as urethane foam is formed of a single layer or a plurality of layers, and maintains a posture made of a soft elastic body harder than the cushion member. A body pressure dispersion hardness adjusting member is embedded so as to cover from the waist to the thigh around the buttocks along the mattress's supine lying direction, and the cross-sectional shape seen from the side of the mattress of the hardness adjusting member is The area around the heel sacrum is the thickest, and the thickness decreases toward the waist and thigh.

  In the mattress according to claim 2, the cross-sectional shape of the hardness adjusting member viewed from the side surface of the mattress is located at the position of the sacrum, such as an arc shape, a wavy mountain shape, a sine wave shape, a triangle shape, a trapezoid shape, a spindle shape, or a step shape. Compared to this, the shape of the waist and thigh is reduced.

  The mattress according to claim 3 is a cross-sectional shape of the hardness adjusting member viewed from the side surface of the mattress, and a shape imitating a side silhouette of a portion from the waist of the human body to the thigh through the buttocks. is there.

  According to the mattress of claim 1, the cross-sectional shape of the hardness adjusting member embedded so as to cover from the waist to the thigh around the buttocks is thickest in the vicinity of the heel sacrum, Since the thickness becomes thinner as it goes to the thigh side, the vicinity of the sacrum is hardest and softer as it goes to the waist and thigh side. For this reason, the amount of subsidence near the heel sacrum where the largest load is applied is suppressed, while the amount of subsidence per unit load increases toward the waist and thighs, and the waist, buttocks, The amount of subsidence of each part of the thigh is suppressed to be substantially the same, and a natural posture close to a standing position is maintained.

  Also, the body pressure applied to the buttocks and sacrum is distributed to the waist and thighs and is kept relatively uniform. Therefore, as in the case of a conventional mattress with a uniform structure as a whole, the load concentrates on the buttocks (especially the sacrum) and the muscles are not strained or the blood flow is stagnated. Even if you are lying on the bed, you will not get tired and you can prevent the occurrence of pressure ulcers.

  In addition, since the amount of sinking of the lumbar region, buttocks and thighs is made uniform, the posture of the spinal column when lying on the mattress in the supine state is almost the same as the posture of the spinal column when standing up . For this reason, it is possible to prevent the occurrence of low back pain due to the enhancement of the lumbar lordosis accompanying the depression of the buttocks, which is particularly suitable for low back pain patients. In addition, even in the lateral position, the applied load is large in the greater trochanter and iliac part and small in the lumbar region, but the structure gradually decreases in hardness so that a natural posture is maintained and body pressure is distributed. Because it is good, it is hard to get tired.

  Furthermore, as the hardness adjusting member, a known soft elastic body such as urethane foam may be used with its hardness changed, and no special material is required, so that the mattress can be provided at low cost.

  According to the mattress of claim 2, the cross-sectional shape of the hardness adjusting member viewed from the side surface side of the mattress is compared with the position of the sacral bone portion such as an arc shape, a wavy mountain shape, a sinusoidal waveform, a triangle shape, a trapezoid shape, a spindle shape, and a step shape. Therefore, the hardness adjustment member can be easily manufactured and the mattress can be provided at a lower cost.

  According to the mattress of claim 3, since the cross-sectional shape of the hardness adjusting member viewed from the side surface side of the mattress is a shape imitating the side surface silhouette of the portion from the waist of the human body through the buttocks to the thigh, The thickness of the cross section of the hardness adjusting member thus made is proportional to the load per unit area, and the amount of subsidence in the lower back, buttocks and thighs can be made more uniform, and body pressure can be more effectively reduced. Dispersion can be achieved.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows an embodiment of a mattress according to the present invention. (A) is a longitudinal cross-sectional view of a mattress, (b) is a perspective view of a hardness adjusting member.

  In the figure, 1 is an upper cushion member made of a soft elastic body such as a low-resilience urethane foam, 2 is a lower cushion member also made of a soft elastic body such as a low-resilience urethane foam, and 3 is a lower surface protection sheet. In general, these are covered with an exterior material (not shown).

  4 is a hardness adjusting member for maintaining posture and distributing body pressure, and the cross-sectional shape seen from the side surface of the mattress is an arc shape, and at least around the sacral sacrum B along the supine sleeping direction of the mattress It is embedded in the lower cushion member 2 across the entire width of the mattress so as to cover the waist A to the thigh C.

  The hardness adjusting member 4 is made of a soft elastic body such as urethane foam and foamed rubber similar to the cushion members 1 and 2, and the hardness thereof is set to be harder than those of the cushion members 1 and 2. Here, “hardness” refers to the degree of elastic deformation with respect to the load, “hard” means that the amount of elastic deformation is small for the same load, and “soft” means the same load. This means that the amount of elastic deformation is large.

  In the mattress according to the above embodiment, the hardness adjusting member 4 has an arcuate cross-sectional shape, so that the area around the heel sacrum B where the largest load is applied is the thickest and hardest, and the thickness decreases as the distance from the heel increases. And become softer. For this reason, when sleeping on the mattress in a supine state, the amount of subsidence in the vicinity of the heel sacrum B where the greatest load is applied is suppressed, while the amount of subsidence per unit load is directed toward the waist A and thigh C. When the entire mattress is viewed, the subsidence amounts of the waist A, the sacrum B, and the thigh C are substantially the same. As a result, the body pressure acting on the mattress is uniformly supported by the whole of the waist A, the heel sacrum B, and the thigh C, and the load is concentrated on the heaviest heel sacrum B as in the prior art. There is no such thing as a stagnation. Therefore, the occurrence of pressure ulcer can be prevented even when the person is lying on the bed for a long time.

  In addition, since the amount of subsidence of the lumbar part A, the heel sacrum part B, and the thigh part C is made uniform, the posture of the spinal column when lying on the mattress in the supine state is that of the spinal column when standing up. It is almost the same as the posture. For this reason, there is no spinal compression due to the depression of the buttocks, and the back pain due to the spinal compression can be eliminated.

  As the hardness adjusting member 4, the same material as the soft elastic body such as urethane foam constituting the cushion members 1 and 2 may be used by changing its hardness, and a special material is not required. Can be provided.

  In addition, since the distance (length) from the heel sacrum B to the thigh C in the human body varies depending on the height, in actual manufacturing and sales, the size is divided into certain height categories, and the hardness is adjusted according to the height category. What is necessary is just to prepare the mattress which changed the magnitude | size of the member 4. FIG.

  In the embodiment described above, the cross-sectional shape of the hardness adjusting member 4 is an arc shape, but the cross-sectional shape of the hardness adjusting member 4 is not limited to this, for example, as shown in FIG. A triangular cross section, a wavy chevron cross section as shown in FIG. 2B, a trapezoid cross section as shown in FIG. 2C, a spindle cross section as shown in FIG. 2D, and a staircase as shown in FIG. Any cross-sectional shape such as a cross-sectional shape or a sinusoidal cross-section (not shown) may be used as long as the hardness on the lumbar region and the thigh side is reduced as compared with the position of the heel sacrum.

  Furthermore, as shown in FIG. 3, if the cross-sectional shape imitating the side silhouette L of the part from the lumbar part A of the human body through the heel sacrum B to the thigh C is used, the lumbar A, heel sacrum B, large The amount of subsidence of the thigh C can be made more uniform, and the body pressure dispersion effect of the mattress of the present invention can be further enhanced.

  In the above embodiment, the hardness adjusting member 4 is embedded in the lower cushion member 2 with the mountain side facing downward, but conversely, the hardness adjusting member 4 may be embedded with the mountain side facing upward. It is. The upper cushion member 1 may be thicker than the lower cushion member 2 and may be embedded in the upper cushion member 1 or may be embedded so as to straddle both the upper cushion member 1 and the lower cushion member 2. Further, although the mattress has a two-layer structure of the upper cushion member 1 and the lower cushion member 2, it may have a single-layer structure or a multilayer structure of three or more layers.

  Moreover, in the said embodiment, although the hardness adjustment member 4 was embedded in the mattress by fitting in the recessed part formed in the lower cushion member 2, the embedding method of the hardness adjustment member 4 is not restricted to this, For example, FIG. 4 (a) and 4 (b), the lower cushion member 2 (or the upper cushion member 1) is formed with a hole 5 that matches the cross-sectional shape of the hardness adjusting member 4, and the hardness adjusting member is formed in the hole 5. 4 may be inserted, or, as shown in FIGS. 5A and 5B, a slit 6 is inserted into the lower cushion member 2 (or the upper cushion member 1), and the hardness adjusting member 4 is inserted into the slit 6. You may make it insert. In particular, when the slit 6 of FIG. 5 is used, the position of the hardness adjusting member 4 can be moved according to the height, and it can be easily replaced with the hardness adjusting member 4 having a different hardness according to the body weight.

BRIEF DESCRIPTION OF THE DRAWINGS One Embodiment of the mattress which concerns on this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a perspective view of a hardness adjustment member. FIG. 6 shows another example of the cross-sectional shape of the hardness adjusting member; (a) a triangular cross-section, (b) a wavy chevron cross-section, (c) a trapezoidal cross-section, (d) a spindle-shaped cross section, and (e) a step-shaped cross section. This is an example. It shows still another example of the shape of the hardness adjusting member, and is an example in the case of a cross-sectional shape simulating a side silhouette of a portion from the waist of the human body through the buttocks to the thigh. An example of embedding an elastic material for pressure dispersion by a hollow hole is shown. (A) is a cross-sectional view of a mattress in which a hollow hole is formed, and (b) is a cross-section of the mattress in a state where a hardness adjusting member is inserted in the hollow hole. FIG. An example in the case of embedding an elastic material for pressure dispersion by a slit is shown, (a) is a cross-sectional view of a mattress in which a slit is formed, and (b) is a cross-sectional view of the mattress in a state where a hardness adjusting member is inserted into the slit. is there.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper cushion member 2 Lower cushion member 3 Lower surface protection sheet 4 Hardness adjustment member 5 Cut-out hole 6 Slit A A waist part B Sacral sac part C Thigh part L The side silhouette of the part from a waist part to a thigh part

Claims (3)

In a mattress composed of a single or multiple layers of cushion members made of a soft elastic body such as urethane foam,
A posture adjustment and body pressure dispersion hardness adjustment member made of a soft elastic body that is harder than the cushion member is embedded so as to cover from the waist to the thigh centering on the buttocks along the mattress's supine sleeping direction. And
The hardness adjusting member is characterized in that the cross-sectional shape viewed from the side surface side of the mattress has a shape that is thickest in the vicinity of the heel sacrum and decreases in thickness toward the waist side and the thigh side. mattress.   The hardness adjustment member has a cross-sectional shape viewed from the side of the mattress, such as an arc shape, a wavy mountain shape, a sinusoidal waveform, a triangle shape, a trapezoidal shape, a spindle shape, and a staircase shape. The mattress according to claim 1, wherein the mattress has a shape that reduces the thickness.   The mattress according to claim 1, wherein a cross-sectional shape of the hardness adjusting member viewed from the side surface of the mattress is a shape imitating a side silhouette of a portion from the waist of the human body to the thigh through the buttocks.

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